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Jawaid Bazyar

13 Mar 2023 13 Mar '23

4:14 a.m.

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Alex Balashov

13 Mar 13 Mar

4:54 a.m.

Unless you have auto-probing enabled, yes.

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On Mar 12, 2023, at 9:14 PM, Jawaid Bazyar <bazyar(a)gmail.com> wrote: Hi, is this expected behavior? I have two target hosts in a dispatcher set, 10.20.20.118 (prio 5) and 10.20.20.252 (prio 10). When I have 10.20.20.252 turned off, dispatcher still tries to send packets to that host, even when the status flags are IP. root@vs-rs01:/etc/kamailio# kamcmd dispatcher.list { NRSETS: 1 RECORDS: { SET: { ID: 1 TARGETS: { DEST: { URI: sip:10.20.20.252:5060 FLAGS: IP PRIORITY: 10 LATENCY: { AVG: 0.000000 STD: 0.000000 EST: 0.000000 MAX: 0 TIMEOUT: 62 } } DEST: { URI: sip:10.20.20.118:5060 FLAGS: AP PRIORITY: 5 LATENCY: { AVG: 3.876000 STD: 2.965000 EST: 5.058000 MAX: 14 TIMEOUT: 0 } } } } } } __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com Tel: +1-706-510-6800

Jawaid Bazyar

4:33 p.m.

Hi Alex, I don't see "auto-probing" in the documentation.. here is my dispatcher config that I snatched from somewhere on the Internet. modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL variable for database parameters modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover support is enabled. modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "ds_ping_interval", 5) #How often to ping destinations to check status modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in a row do we need before we consider it down modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful pings in a row do we need before considering it up modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when state is known (to detect change in state) On 3/12/23, 8:28 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com>> wrote: Unless you have auto-probing enabled, yes.

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On Mar 12, 2023, at 9:14 PM, Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com>> wrote: Hi, is this expected behavior? I have two target hosts in a dispatcher set, 10.20.20.118 (prio 5) and 10.20.20.252 (prio 10). When I have 10.20.20.252 turned off, dispatcher still tries to send packets to that host, even when the status flags are IP. root@vs-rs01:/etc/kamailio# kamcmd dispatcher.list { NRSETS: 1 RECORDS: { SET: { ID: 1 TARGETS: { DEST: { URI: sip:10.20.20.252:5060 FLAGS: IP PRIORITY: 10 LATENCY: { AVG: 0.000000 STD: 0.000000 EST: 0.000000 MAX: 0 TIMEOUT: 62 } } DEST: { URI: sip:10.20.20.118:5060 FLAGS: AP PRIORITY: 5 LATENCY: { AVG: 3.876000 STD: 2.965000 EST: 5.058000 MAX: 14 TIMEOUT: 0 } } } } } } __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

Henning Westerholt

5:55 p.m.

Hello, not sure what the "auto-probing" mode is, but you can configure the dispatcher OPTIONS ping behaviour with that parameter: https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.… Cheers, Henning -----Original Message----- From: Jawaid Bazyar <bazyar(a)gmail.com> Sent: Montag, 13. März 2023 14:33 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> Subject: [SR-Users] Re: Dispatcher behavior Hi Alex, I don't see "auto-probing" in the documentation.. here is my dispatcher config that I snatched from somewhere on the Internet. modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL variable for database parameters modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover support is enabled. modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "ds_ping_interval", 5) #How often to ping destinations to check status modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in a row do we need before we consider it down modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful pings in a row do we need before considering it up modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when state is known (to detect change in state) On 3/12/23, 8:28 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com>> wrote: Unless you have auto-probing enabled, yes.

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-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com <https://evaristesys.com> Tel: +1-706-510-6800 __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

Jawaid Bazyar

6:05 p.m.

Hi Henning, I've been over that section a number of times, but it is still not clear why Dispatcher would return from ds_select_dst a host that is in IP state. "I" is Inactive. What does "Probing" mean? Does it imply something besides "we're trying to send OPTIONS packets"? Regards, Jawaid On 3/13/23, 8:55 AM, "Henning Westerholt" <hw(a)gilawa.com <mailto:hw@gilawa.com>> wrote: Hello, not sure what the "auto-probing" mode is, but you can configure the dispatcher OPTIONS ping behaviour with that parameter: https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.… <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> Cheers, Henning -----Original Message----- From: Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com>> Sent: Montag, 13. März 2023 14:33 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> Subject: [SR-Users] Re: Dispatcher behavior Hi Alex, I don't see "auto-probing" in the documentation.. here is my dispatcher config that I snatched from somewhere on the Internet. modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL variable for database parameters modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover support is enabled. modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "ds_ping_interval", 5) #How often to ping destinations to check status modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in a row do we need before we consider it down modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful pings in a row do we need before considering it up modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when state is known (to detect change in state) On 3/12/23, 8:28 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>> wrote: Unless you have auto-probing enabled, yes.

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On Mar 12, 2023, at 9:14 PM, Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>> wrote: Hi, is this expected behavior? I have two target hosts in a dispatcher set, 10.20.20.118 (prio 5) and 10.20.20.252 (prio 10). When I have 10.20.20.252 turned off, dispatcher still tries to send packets to that host, even when the status flags are IP. root@vs-rs01:/etc/kamailio# kamcmd dispatcher.list { NRSETS: 1 RECORDS: { SET: { ID: 1 TARGETS: { DEST: { URI: sip:10.20.20.252:5060 FLAGS: IP PRIORITY: 10 LATENCY: { AVG: 0.000000 STD: 0.000000 EST: 0.000000 MAX: 0 TIMEOUT: 62 } } DEST: { URI: sip:10.20.20.118:5060 FLAGS: AP PRIORITY: 5 LATENCY: { AVG: 3.876000 STD: 2.965000 EST: 5.058000 MAX: 14 TIMEOUT: 0 } } } } } } __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com <https://evaristesys.com> <https://evaristesys.com> <https://evaristesys.com>> Tel: +1-706-510-6800 __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

Henning Westerholt

6:51 p.m.

Hello, probing means in this context sending OPTIONS pings, yes. In mode 1 you can disable the probing by setting flag 4 to the destination in the dispatcher file, according to the docs. Cheers, Henning -----Original Message----- From: Henning Westerholt <hw(a)gilawa.com> Sent: Montag, 13. März 2023 15:55 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> Subject: [SR-Users] Re: Dispatcher behavior Hello, not sure what the "auto-probing" mode is, but you can configure the dispatcher OPTIONS ping behaviour with that parameter: https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.… Cheers, Henning -----Original Message----- From: Jawaid Bazyar <bazyar(a)gmail.com> Sent: Montag, 13. März 2023 14:33 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> Subject: [SR-Users] Re: Dispatcher behavior Hi Alex, I don't see "auto-probing" in the documentation.. here is my dispatcher config that I snatched from somewhere on the Internet. modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL variable for database parameters modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover support is enabled. modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "ds_ping_interval", 5) #How often to ping destinations to check status modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in a row do we need before we consider it down modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful pings in a row do we need before considering it up modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when state is known (to detect change in state) On 3/12/23, 8:28 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com>> wrote: Unless you have auto-probing enabled, yes.

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Jawaid Bazyar

14 Mar 14 Mar

1:59 a.m.

Hi, Maybe it would be easier to explain my expectations on how it's supposed to work, and then you can tell me where I'm making a wrong assumption __ So, load balancers like haproxy etc perform "health checks" on the service being balanced. In this case, I have it setup for Kamailio to send OPTIONS and I do in fact see those packets and 200 OK responses. And if haproxy sees a host is down, it immediately stops trying to send client requests to that host. In this case, after 10 successful OPTIONS pings, Kamailio marks the destination as AP and everything is fine, Kamailio correctly returns the destination in ds_select_dst. I have the settings below, so that if the service misses 5 OPTIONS checks, Kamailio should mark that destination as "inactive". But, it should keep probing it, so Kamailio can detect when the destination comes back up. So as I understand it, that's the status "IP". And, Kamailio should stop including that destination in the responses from ds_select_dst(). And all of that is behaving as expected, EXCEPT that last bit - ds_select_dst continues to include the IP (inactive) destination in responses. I added ds_mark_dst("ip"); in the event of a 500 or branch failure response, but I don't understand why this is needed, because the destination is already in "IP" mode. So seemingly Kamailio knows the destination is inactive, but ds_select_dst isn't acting on it unless I manually mark the target also. Perhaps I am overlooking an option? Regards, Jawaid On 3/13/23, 9:51 AM, "Henning Westerholt" <hw(a)gilawa.com <mailto:hw@gilawa.com>> wrote: Hello, probing means in this context sending OPTIONS pings, yes. In mode 1 you can disable the probing by setting flag 4 to the destination in the dispatcher file, according to the docs. Cheers, Henning -----Original Message----- From: Henning Westerholt <hw(a)gilawa.com <mailto:hw@gilawa.com>> Sent: Montag, 13. März 2023 15:55 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> Subject: [SR-Users] Re: Dispatcher behavior Hello, not sure what the "auto-probing" mode is, but you can configure the dispatcher OPTIONS ping behaviour with that parameter: https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.… <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> Cheers, Henning -----Original Message----- From: Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com>> Sent: Montag, 13. März 2023 14:33 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> Subject: [SR-Users] Re: Dispatcher behavior Hi Alex, I don't see "auto-probing" in the documentation.. here is my dispatcher config that I snatched from somewhere on the Internet. modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL variable for database parameters modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover support is enabled. modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "ds_ping_interval", 5) #How often to ping destinations to check status modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in a row do we need before we consider it down modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful pings in a row do we need before considering it up modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when state is known (to detect change in state) On 3/12/23, 8:28 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>> wrote: Unless you have auto-probing enabled, yes.

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-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com <https://evaristesys.com> <https://evaristesys.com> <https://evaristesys.com>> Tel: +1-706-510-6800 __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

Alex Balashov

2:45 a.m.

I wonder if the distribution algorithm you have chosen behaves differently in this regard. Have you tried plain round-robin (i.e. #4)?

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On Mar 13, 2023, at 6:59 PM, Jawaid Bazyar <bazyar(a)gmail.com> wrote: Hi, Maybe it would be easier to explain my expectations on how it's supposed to work, and then you can tell me where I'm making a wrong assumption __ So, load balancers like haproxy etc perform "health checks" on the service being balanced. In this case, I have it setup for Kamailio to send OPTIONS and I do in fact see those packets and 200 OK responses. And if haproxy sees a host is down, it immediately stops trying to send client requests to that host. In this case, after 10 successful OPTIONS pings, Kamailio marks the destination as AP and everything is fine, Kamailio correctly returns the destination in ds_select_dst. I have the settings below, so that if the service misses 5 OPTIONS checks, Kamailio should mark that destination as "inactive". But, it should keep probing it, so Kamailio can detect when the destination comes back up. So as I understand it, that's the status "IP". And, Kamailio should stop including that destination in the responses from ds_select_dst(). And all of that is behaving as expected, EXCEPT that last bit - ds_select_dst continues to include the IP (inactive) destination in responses. I added ds_mark_dst("ip"); in the event of a 500 or branch failure response, but I don't understand why this is needed, because the destination is already in "IP" mode. So seemingly Kamailio knows the destination is inactive, but ds_select_dst isn't acting on it unless I manually mark the target also. Perhaps I am overlooking an option? Regards, Jawaid On 3/13/23, 9:51 AM, "Henning Westerholt" <hw(a)gilawa.com <mailto:hw@gilawa.com>> wrote: Hello, probing means in this context sending OPTIONS pings, yes. In mode 1 you can disable the probing by setting flag 4 to the destination in the dispatcher file, according to the docs. Cheers, Henning -----Original Message----- From: Henning Westerholt <hw(a)gilawa.com <mailto:hw@gilawa.com>> Sent: Montag, 13. März 2023 15:55 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> Subject: [SR-Users] Re: Dispatcher behavior Hello, not sure what the "auto-probing" mode is, but you can configure the dispatcher OPTIONS ping behaviour with that parameter: https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.… <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> Cheers, Henning -----Original Message----- From: Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com>> Sent: Montag, 13. März 2023 14:33 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> Subject: [SR-Users] Re: Dispatcher behavior Hi Alex, I don't see "auto-probing" in the documentation.. here is my dispatcher config that I snatched from somewhere on the Internet. modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL variable for database parameters modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover support is enabled. modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "ds_ping_interval", 5) #How often to ping destinations to check status modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in a row do we need before we consider it down modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful pings in a row do we need before considering it up modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when state is known (to detect change in state) On 3/12/23, 8:28 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>> wrote: Unless you have auto-probing enabled, yes.

-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com <https://evaristesys.com> <https://evaristesys.com> <https://evaristesys.com>> Tel: +1-706-510-6800 __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com Tel: +1-706-510-6800

Jawaid Bazyar

3:27 a.m.

Hi Alex, I did try round-robin, but it has a different issue, which is that calls from a handset through the Kamailio to say asterisk1, trigger authentication challenge, then when the auth comes back from the client, Kam decides that's a failure, goes into the failover logic, and it round robins the client's auth to the -other- asterisk asterisk2, which then rejects the auth attempt as having a stale nonce (which is right, since it came from the other asterisk). I haven't yet figured out how to keep affinity for the same asterisk except by routing based on CallID. I guess the other option would be to tell Dispatcher that 401 Auth is not a 'failure'. If I can figure that out, then I can try with round robin. Jawaid -- On 3/13/23, 6:09 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com>> wrote: I wonder if the distribution algorithm you have chosen behaves differently in this regard. Have you tried plain round-robin (i.e. #4)?

...

On Mar 13, 2023, at 6:59 PM, Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com>> wrote: Hi, Maybe it would be easier to explain my expectations on how it's supposed to work, and then you can tell me where I'm making a wrong assumption __ So, load balancers like haproxy etc perform "health checks" on the service being balanced. In this case, I have it setup for Kamailio to send OPTIONS and I do in fact see those packets and 200 OK responses. And if haproxy sees a host is down, it immediately stops trying to send client requests to that host. In this case, after 10 successful OPTIONS pings, Kamailio marks the destination as AP and everything is fine, Kamailio correctly returns the destination in ds_select_dst. I have the settings below, so that if the service misses 5 OPTIONS checks, Kamailio should mark that destination as "inactive". But, it should keep probing it, so Kamailio can detect when the destination comes back up. So as I understand it, that's the status "IP". And, Kamailio should stop including that destination in the responses from ds_select_dst(). And all of that is behaving as expected, EXCEPT that last bit - ds_select_dst continues to include the IP (inactive) destination in responses. I added ds_mark_dst("ip"); in the event of a 500 or branch failure response, but I don't understand why this is needed, because the destination is already in "IP" mode. So seemingly Kamailio knows the destination is inactive, but ds_select_dst isn't acting on it unless I manually mark the target also. Perhaps I am overlooking an option? Regards, Jawaid On 3/13/23, 9:51 AM, "Henning Westerholt" <hw(a)gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>>> wrote: Hello, probing means in this context sending OPTIONS pings, yes. In mode 1 you can disable the probing by setting flag 4 to the destination in the dispatcher file, according to the docs. Cheers, Henning -----Original Message----- From: Henning Westerholt <hw(a)gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>>> Sent: Montag, 13. März 2023 15:55 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>>> Subject: [SR-Users] Re: Dispatcher behavior Hello, not sure what the "auto-probing" mode is, but you can configure the dispatcher OPTIONS ping behaviour with that parameter: https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.… <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>> Cheers, Henning -----Original Message----- From: Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>> Sent: Montag, 13. März 2023 14:33 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>>> Subject: [SR-Users] Re: Dispatcher behavior Hi Alex, I don't see "auto-probing" in the documentation.. here is my dispatcher config that I snatched from somewhere on the Internet. modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL variable for database parameters modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover support is enabled. modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "ds_ping_interval", 5) #How often to ping destinations to check status modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in a row do we need before we consider it down modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful pings in a row do we need before considering it up modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when state is known (to detect change in state) On 3/12/23, 8:28 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>>> wrote: Unless you have auto-probing enabled, yes.

Alex Balashov

4:25 a.m.

To your failure_route used for dispatcher rollover, add: if(t_check_status(“407|401”)) exit; This will allow the 401/407 challenge to be fed back to the original caller. — Alex

...

On Mar 13, 2023, at 8:27 PM, Jawaid Bazyar <bazyar(a)gmail.com> wrote: Hi Alex, I did try round-robin, but it has a different issue, which is that calls from a handset through the Kamailio to say asterisk1, trigger authentication challenge, then when the auth comes back from the client, Kam decides that's a failure, goes into the failover logic, and it round robins the client's auth to the -other- asterisk asterisk2, which then rejects the auth attempt as having a stale nonce (which is right, since it came from the other asterisk). I haven't yet figured out how to keep affinity for the same asterisk except by routing based on CallID. I guess the other option would be to tell Dispatcher that 401 Auth is not a 'failure'. If I can figure that out, then I can try with round robin. Jawaid -- On 3/13/23, 6:09 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com>> wrote: I wonder if the distribution algorithm you have chosen behaves differently in this regard. Have you tried plain round-robin (i.e. #4)?

-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com Tel: +1-706-510-6800

Jawaid Bazyar

5:19 a.m.

That seems like it ought to have worked, but no.. Same issue, Pic of trace attached. The below config is largely cribbed from the default kamailio.cfg, and from the Dispatcher documentation example config.. In request_route route(DISPATCH); route[DISPATCH] { if (!ds_select_dst(1, 4)) { #Get a destination from dispatcher send_reply("404","No destination DS"); exit; } xlog("--- DISPATCH: going to <$ru> via <$du> (attrs: $xavp(_dsdst_=>attrs))\n"); t_on_failure("DISPATCH_FAILURE"); route(RELAY); #Route it exit; } failure_route[DISPATCH_FAILURE] { if (t_is_canceled()) { exit; } # if an auth request, don't go to next entry in ds list.. if (t_check_status("(401)|(407)")) { xlog("401 or 407 status reply from dispatch"); exit; } # next DST - only for 500 or local timeout if (t_check_status("500") or (t_branch_timeout() and !t_branch_replied())) { # on a timeout failure, 500, etc mark this dest as IP (as bad). ds_mark_dst("ip"); if(ds_next_dst()) { xlog("--- DISPATCH_FAILURE: retrying to <$ru> via <$du> (attrs: $xavp(_dsdst_=>attrs))\n"); t_on_failure("DISPATCH_FAILURE"); route(RELAY); exit; } } } On 3/13/23, 7:49 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com>> wrote: To your failure_route used for dispatcher rollover, add: if(t_check_status(“407|401”)) exit; This will allow the 401/407 challenge to be fed back to the original caller. — Alex

...

On Mar 13, 2023, at 8:27 PM, Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com>> wrote: Hi Alex, I did try round-robin, but it has a different issue, which is that calls from a handset through the Kamailio to say asterisk1, trigger authentication challenge, then when the auth comes back from the client, Kam decides that's a failure, goes into the failover logic, and it round robins the client's auth to the -other- asterisk asterisk2, which then rejects the auth attempt as having a stale nonce (which is right, since it came from the other asterisk). I haven't yet figured out how to keep affinity for the same asterisk except by routing based on CallID. I guess the other option would be to tell Dispatcher that 401 Auth is not a 'failure'. If I can figure that out, then I can try with round robin. Jawaid -- On 3/13/23, 6:09 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>> wrote: I wonder if the distribution algorithm you have chosen behaves differently in this regard. Have you tried plain round-robin (i.e. #4)?

On Mar 13, 2023, at 6:59 PM, Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>> wrote: Hi, Maybe it would be easier to explain my expectations on how it's supposed to work, and then you can tell me where I'm making a wrong assumption __ So, load balancers like haproxy etc perform "health checks" on the service being balanced. In this case, I have it setup for Kamailio to send OPTIONS and I do in fact see those packets and 200 OK responses. And if haproxy sees a host is down, it immediately stops trying to send client requests to that host. In this case, after 10 successful OPTIONS pings, Kamailio marks the destination as AP and everything is fine, Kamailio correctly returns the destination in ds_select_dst. I have the settings below, so that if the service misses 5 OPTIONS checks, Kamailio should mark that destination as "inactive". But, it should keep probing it, so Kamailio can detect when the destination comes back up. So as I understand it, that's the status "IP". And, Kamailio should stop including that destination in the responses from ds_select_dst(). And all of that is behaving as expected, EXCEPT that last bit - ds_select_dst continues to include the IP (inactive) destination in responses. I added ds_mark_dst("ip"); in the event of a 500 or branch failure response, but I don't understand why this is needed, because the destination is already in "IP" mode. So seemingly Kamailio knows the destination is inactive, but ds_select_dst isn't acting on it unless I manually mark the target also. Perhaps I am overlooking an option? Regards, Jawaid On 3/13/23, 9:51 AM, "Henning Westerholt" <hw(a)gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>> <mailto:hw@gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>>>> wrote: Hello, probing means in this context sending OPTIONS pings, yes. In mode 1 you can disable the probing by setting flag 4 to the destination in the dispatcher file, according to the docs. Cheers, Henning -----Original Message----- From: Henning Westerholt <hw(a)gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>> <mailto:hw@gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>>>> Sent: Montag, 13. März 2023 15:55 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>>>> Subject: [SR-Users] Re: Dispatcher behavior Hello, not sure what the "auto-probing" mode is, but you can configure the dispatcher OPTIONS ping behaviour with that parameter: https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.… <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode&gt;>> Cheers, Henning -----Original Message----- From: Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>>> Sent: Montag, 13. März 2023 14:33 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>>>> Subject: [SR-Users] Re: Dispatcher behavior Hi Alex, I don't see "auto-probing" in the documentation.. here is my dispatcher config that I snatched from somewhere on the Internet. modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL variable for database parameters modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover support is enabled. modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "ds_ping_interval", 5) #How often to ping destinations to check status modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in a row do we need before we consider it down modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful pings in a row do we need before considering it up modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when state is known (to detect change in state) On 3/12/23, 8:28 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>>>> wrote: Unless you have auto-probing enabled, yes.

-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com <https://evaristesys.com> <https://evaristesys.com> <https://evaristesys.com>> Tel: +1-706-510-6800 __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

Henning Westerholt

15 Mar 15 Mar

12:09 p.m.

Hello, what about just hashing over a stable part, e.g. the from URI? Then the dispatcher would distribute the second INVITE with authorization information to the same asterisk again. Cheers, Henning -----Original Message----- From: Jawaid Bazyar <bazyar(a)gmail.com> Sent: Dienstag, 14. März 2023 03:20 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> Subject: [SR-Users] Re: Dispatcher behavior That seems like it ought to have worked, but no.. Same issue, Pic of trace attached. The below config is largely cribbed from the default kamailio.cfg, and from the Dispatcher documentation example config.. In request_route route(DISPATCH); route[DISPATCH] { if (!ds_select_dst(1, 4)) { #Get a destination from dispatcher send_reply("404","No destination DS"); exit; } xlog("--- DISPATCH: going to <$ru> via <$du> (attrs: $xavp(_dsdst_=>attrs))\n"); t_on_failure("DISPATCH_FAILURE"); route(RELAY); #Route it exit; } failure_route[DISPATCH_FAILURE] { if (t_is_canceled()) { exit; } # if an auth request, don't go to next entry in ds list.. if (t_check_status("(401)|(407)")) { xlog("401 or 407 status reply from dispatch"); exit; } # next DST - only for 500 or local timeout if (t_check_status("500") or (t_branch_timeout() and !t_branch_replied())) { # on a timeout failure, 500, etc mark this dest as IP (as bad). ds_mark_dst("ip"); if(ds_next_dst()) { xlog("--- DISPATCH_FAILURE: retrying to <$ru> via <$du> (attrs: $xavp(_dsdst_=>attrs))\n"); t_on_failure("DISPATCH_FAILURE"); route(RELAY); exit; } } } On 3/13/23, 7:49 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com>> wrote: To your failure_route used for dispatcher rollover, add: if(t_check_status(“407|401”)) exit; This will allow the 401/407 challenge to be fed back to the original caller. — Alex

...

-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com <https://evaristesys.com> <https://evaristesys.com> <https://evaristesys.com>> Tel: +1-706-510-6800 __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

Jawaid Bazyar

5:33 p.m.

Hi, yes, that's the change I made which gets around the issue. I have the priorities of the hosts currently set to be the same, and, am using one of the URI hashes for REGISTER. On 3/15/23, 3:09 AM, "Henning Westerholt" <hw(a)gilawa.com <mailto:hw@gilawa.com>> wrote: Hello, what about just hashing over a stable part, e.g. the from URI? Then the dispatcher would distribute the second INVITE with authorization information to the same asterisk again. Cheers, Henning -----Original Message----- From: Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com>> Sent: Dienstag, 14. März 2023 03:20 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> Subject: [SR-Users] Re: Dispatcher behavior That seems like it ought to have worked, but no.. Same issue, Pic of trace attached. The below config is largely cribbed from the default kamailio.cfg, and from the Dispatcher documentation example config.. In request_route route(DISPATCH); route[DISPATCH] { if (!ds_select_dst(1, 4)) { #Get a destination from dispatcher send_reply("404","No destination DS"); exit; } xlog("--- DISPATCH: going to <$ru> via <$du> (attrs: $xavp(_dsdst_=>attrs))\n"); t_on_failure("DISPATCH_FAILURE"); route(RELAY); #Route it exit; } failure_route[DISPATCH_FAILURE] { if (t_is_canceled()) { exit; } # if an auth request, don't go to next entry in ds list.. if (t_check_status("(401)|(407)")) { xlog("401 or 407 status reply from dispatch"); exit; } # next DST - only for 500 or local timeout if (t_check_status("500") or (t_branch_timeout() and !t_branch_replied())) { # on a timeout failure, 500, etc mark this dest as IP (as bad). ds_mark_dst("ip"); if(ds_next_dst()) { xlog("--- DISPATCH_FAILURE: retrying to <$ru> via <$du> (attrs: $xavp(_dsdst_=>attrs))\n"); t_on_failure("DISPATCH_FAILURE"); route(RELAY); exit; } } } On 3/13/23, 7:49 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>> wrote: To your failure_route used for dispatcher rollover, add: if(t_check_status(“407|401”)) exit; This will allow the 401/407 challenge to be fed back to the original caller. — Alex

...

On Mar 13, 2023, at 8:27 PM, Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>> wrote: Hi Alex, I did try round-robin, but it has a different issue, which is that calls from a handset through the Kamailio to say asterisk1, trigger authentication challenge, then when the auth comes back from the client, Kam decides that's a failure, goes into the failover logic, and it round robins the client's auth to the -other- asterisk asterisk2, which then rejects the auth attempt as having a stale nonce (which is right, since it came from the other asterisk). I haven't yet figured out how to keep affinity for the same asterisk except by routing based on CallID. I guess the other option would be to tell Dispatcher that 401 Auth is not a 'failure'. If I can figure that out, then I can try with round robin. Jawaid -- On 3/13/23, 6:09 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>>> wrote: I wonder if the distribution algorithm you have chosen behaves differently in this regard. Have you tried plain round-robin (i.e. #4)?

On Mar 13, 2023, at 6:59 PM, Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>>> wrote: Hi, Maybe it would be easier to explain my expectations on how it's supposed to work, and then you can tell me where I'm making a wrong assumption __ So, load balancers like haproxy etc perform "health checks" on the service being balanced. In this case, I have it setup for Kamailio to send OPTIONS and I do in fact see those packets and 200 OK responses. And if haproxy sees a host is down, it immediately stops trying to send client requests to that host. In this case, after 10 successful OPTIONS pings, Kamailio marks the destination as AP and everything is fine, Kamailio correctly returns the destination in ds_select_dst. I have the settings below, so that if the service misses 5 OPTIONS checks, Kamailio should mark that destination as "inactive". But, it should keep probing it, so Kamailio can detect when the destination comes back up. So as I understand it, that's the status "IP". And, Kamailio should stop including that destination in the responses from ds_select_dst(). And all of that is behaving as expected, EXCEPT that last bit - ds_select_dst continues to include the IP (inactive) destination in responses. I added ds_mark_dst("ip"); in the event of a 500 or branch failure response, but I don't understand why this is needed, because the destination is already in "IP" mode. So seemingly Kamailio knows the destination is inactive, but ds_select_dst isn't acting on it unless I manually mark the target also. Perhaps I am overlooking an option? Regards, Jawaid On 3/13/23, 9:51 AM, "Henning Westerholt" <hw(a)gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>> <mailto:hw@gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>>> <mailto:hw@gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>> <mailto:hw@gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>>>>> wrote: Hello, probing means in this context sending OPTIONS pings, yes. In mode 1 you can disable the probing by setting flag 4 to the destination in the dispatcher file, according to the docs. Cheers, Henning -----Original Message----- From: Henning Westerholt <hw(a)gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>> <mailto:hw@gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>>> <mailto:hw@gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>> <mailto:hw@gilawa.com <mailto:hw@gilawa.com> <mailto:hw@gilawa.com <mailto:hw@gilawa.com>>>>> Sent: Montag, 13. März 2023 15:55 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>>> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>>>>> Subject: [SR-Users] Re: Dispatcher behavior Hello, not sure what the "auto-probing" mode is, but you can configure the dispatcher OPTIONS ping behaviour with that parameter: https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.… <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode&gt;>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode&gt;>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode&gt;>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode&gt;>> <https://kamailio.org/docs/modules/5.5.x/modules/dispatcher.html#dispatcher.p.ds_probing_mode&amp;gt;&gt;>> Cheers, Henning -----Original Message----- From: Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>>>> Sent: Montag, 13. März 2023 14:33 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>>> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org> <mailto:sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>>>>> Subject: [SR-Users] Re: Dispatcher behavior Hi Alex, I don't see "auto-probing" in the documentation.. here is my dispatcher config that I snatched from somewhere on the Internet. modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL variable for database parameters modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover support is enabled. modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "ds_ping_interval", 5) #How often to ping destinations to check status modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in a row do we need before we consider it down modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful pings in a row do we need before considering it up modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when state is known (to detect change in state) On 3/12/23, 8:28 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com> <mailto:abalashov@evaristesys.com <mailto:abalashov@evaristesys.com>>>>>> wrote: Unless you have auto-probing enabled, yes.

On Mar 12, 2023, at 9:14 PM, Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>>>>> wrote: Hi, is this expected behavior? I have two target hosts in a dispatcher set, 10.20.20.118 (prio 5) and 10.20.20.252 (prio 10). When I have 10.20.20.252 turned off, dispatcher still tries to send packets to that host, even when the status flags are IP. root@vs-rs01:/etc/kamailio# kamcmd dispatcher.list { NRSETS: 1 RECORDS: { SET: { ID: 1 TARGETS: { DEST: { URI: sip:10.20.20.252:5060 FLAGS: IP PRIORITY: 10 LATENCY: { AVG: 0.000000 STD: 0.000000 EST: 0.000000 MAX: 0 TIMEOUT: 62 } } DEST: { URI: sip:10.20.20.118:5060 FLAGS: AP PRIORITY: 5 LATENCY: { AVG: 3.876000 STD: 2.965000 EST: 5.058000 MAX: 14 TIMEOUT: 0 } } } } } } __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>>>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com <https://evaristesys.com> <https://evaristesys.com> <https://evaristesys.com>> <https://evaristesys.com> <https://evaristesys.com>> <https://evaristesys.com>> <https://evaristesys.com&gt;>> <https://evaristesys.com> <https://evaristesys.com>> <https://evaristesys.com>> <https://evaristesys.com&gt;>> <https://evaristesys.com>> <https://evaristesys.com&gt;>> <https://evaristesys.com&gt;>> <https://evaristesys.com&amp;gt;&gt;>> <https://evaristesys.com> <https://evaristesys.com>> <https://evaristesys.com>> <https://evaristesys.com&gt;>> <https://evaristesys.com>> <https://evaristesys.com&gt;>> <https://evaristesys.com&gt;>> <https://evaristesys.com&amp;gt;&gt;>> <https://evaristesys.com>> <https://evaristesys.com&gt;>> <https://evaristesys.com&gt;>> <https://evaristesys.com&amp;gt;&gt;>> <https://evaristesys.com&gt;>> <https://evaristesys.com&amp;gt;&gt;>> <https://evaristesys.com&amp;gt;&gt;>> <https://evaristesys.com&amp;amp;gt;&amp;gt;&gt;>> Tel: +1-706-510-6800 __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>>>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com <https://evaristesys.com> <https://evaristesys.com> <https://evaristesys.com>> Tel: +1-706-510-6800 __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org> <mailto:sr-users-leave@lists.kamailio.org <mailto:sr-users-leave@lists.kamailio.org>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

Karsten Horsmann

14 Mar 14 Mar

8:45 a.m.

Hi, You can configure Kamailio with dispatcher to an behavior like you want. I personal would not set an destination to IP on 500 but that depends on your needs. Kind regards Jawaid Bazyar <bazyar(a)gmail.com> schrieb am Di., 14. März 2023, 00:41:

...

Cheers, Henning -----Original Message----- From: Jawaid Bazyar <bazyar(a)gmail.com <mailto:bazyar@gmail.com>> Sent: Montag, 13. März 2023 14:33 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org>> Subject: [SR-Users] Re: Dispatcher behavior Hi Alex, I don't see "auto-probing" in the documentation.. here is my dispatcher config that I snatched from somewhere on the Internet. modparam("dispatcher", "db_url", "mysql://xxxxxxx/kamailio") #Use DBURL variable for database parameters modparam("dispatcher", "flags", 2) # If flag 2 is set, then the failover support is enabled. modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "ds_ping_interval", 5) #How often to ping destinations to check status modparam("dispatcher", "ds_ping_method", "OPTIONS") #Send SIP Options ping modparam("dispatcher", "ds_probing_threshold", 5) #How many failed pings in a row do we need before we consider it down modparam("dispatcher", "ds_inactive_threshold", 10) #How many sucessful pings in a row do we need before considering it up modparam("dispatcher", "ds_ping_latency_stats", 1) #Enables stats on latency modparam("dispatcher", "ds_probing_mode", 1) #Keeps pinging gateways when state is known (to detect change in state) On 3/12/23, 8:28 PM, "Alex Balashov" <abalashov(a)evaristesys.com <mailto: abalashov(a)evaristesys.com> <mailto:abalashov@evaristesys.com <mailto: abalashov(a)evaristesys.com>>> wrote: Unless you have auto-probing enabled, yes.

On Mar 12, 2023, at 9:14 PM, Jawaid Bazyar <bazyar(a)gmail.com <mailto:

bazyar(a)gmail.com> <mailto:bazyar@gmail.com <mailto:bazyar@gmail.com>>> wrote:

> Hi, is this expected behavior? > I have two target hosts in a dispatcher set, 10.20.20.118 (prio 5) and 10.20.20.252 (prio 10).

When I have 10.20.20.252 turned off, dispatcher still tries to send

packets to that host, even when the status flags are IP.

root@vs-rs01:/etc/kamailio# kamcmd dispatcher.list { NRSETS: 1 RECORDS: { SET: { ID: 1 TARGETS: { DEST: { URI: sip:10.20.20.252:5060 FLAGS: IP PRIORITY: 10 LATENCY: { AVG: 0.000000 STD: 0.000000 EST: 0.000000 MAX: 0 TIMEOUT: 62 } } DEST: { URI: sip:10.20.20.118:5060 FLAGS: AP PRIORITY: 5 LATENCY: { AVG: 3.876000 STD: 2.965000 EST: 5.058000 MAX: 14 TIMEOUT: 0 } } } } } } __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto:

sr-users-leave(a)lists.kamailio.org>

<mailto:sr-users-leave@lists.kamailio.org <mailto:

sr-users-leave(a)lists.kamailio.org>>

Important: keep the mailing list in the recipients, do not reply only to

the sender!

Edit mailing list options or unsubscribe:

-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com <https://evaristesys.com> < https://evaristesys.com> <https://evaristesys.com>> Tel: +1-706-510-6800 __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto: sr-users-leave(a)lists.kamailio.org> <mailto: sr-users-leave(a)lists.kamailio.org <mailto: sr-users-leave(a)lists.kamailio.org>> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto: sr-users-leave(a)lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org <mailto: sr-users-leave(a)lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

David Villasmil

13 Mar 13 Mar

5:16 a.m.

What type of packets? It should send OPTIONS to check whether it came back up. There’s params to disable this behavior. On Mon, 13 Mar 2023 at 01:53, Jawaid Bazyar <bazyar(a)gmail.com> wrote:

...

Hi, is this expected behavior? I have two target hosts in a dispatcher set, 10.20.20.118 (prio 5) and 10.20.20.252 (prio 10). When I have 10.20.20.252 turned off, dispatcher still tries to send packets to that host, even when the status flags are IP. root@vs-rs01:/etc/kamailio# kamcmd dispatcher.list { NRSETS: 1 RECORDS: { SET: { ID: 1 TARGETS: { DEST: { URI: sip:10.20.20.252:5060 FLAGS: IP PRIORITY: 10 LATENCY: { AVG: 0.000000 STD: 0.000000 EST: 0.000000 MAX: 0 TIMEOUT: 62 } } DEST: { URI: sip:10.20.20.118:5060 FLAGS: AP PRIORITY: 5 LATENCY: { AVG: 3.876000 STD: 2.965000 EST: 5.058000 MAX: 14 TIMEOUT: 0 } } } } } } __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

-- Regards, David Villasmil email: david.villasmil.work(a)gmail.com phone: +34669448337

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Alex Balashov
David Villasmil
Henning Westerholt
Jawaid Bazyar
Karsten Horsmann