Re: [Serusers] failover and VRRP

hgaillac-sip(a)yahoo.fr wrote: sipsak can be configured to respond with Nagios result codes. I think the option is -n. Nagios has been setup to execute sipsak with an input file that contains a specific notify message. This message has an event type of "keep-alive". When my proxies see this event from our nagios host they respond with a 200 ok. This is sufficient to "verify" that the proxy is operational at a sip level or so we like to believe :-)

Steve >Harry > >--- Steve Blair <blairs(a)isc.upenn.edu> a écrit : >>hgaillac-sip(a)yahoo.fr wrote: >>>Hello, >>> >>>Ok SRV records point to proxy sip server but if >> >>this >> >>>one is down before or during connection !!! >> >>During a connection doesn't matter in my >>environment. I am running SER >>in a stateless >>mode. Once the call is setup media flows between >>endpoints and the proxy >>is out of the >>connection. I am not using NAT either. >> >>> SER1 >>>DNS servers=== [?] =====sip agents >>> SER2 >>> >>>How [?] can it provide H-A (heartbeat soft) between >>>ser boxes. >> >>Neither the SRV or VRRP can provide a heartbeat >>between SER boxes. You'd >>need an application running on the SER boxes to do >>that. I rely upon >>t_replicate to update the backup during >>registration, I use NAGIOS to >>monitor SER to know when a server of applications on >>that server have >>failed and I use an SRV record defined in each phone >>to identify the >>proxy. This way the phone will failover on it's own >>during call setup. >>Of course this doesn't help during a call but as I >>said I am running SER >>in a stateless mode so the proxy "steps out" once >>the call is setup. >> >>>If one of these sip proxy failed during a call can >> >>we >> >>>redirect the call to the other proxy ? >> >>I'm not sure how you would accomplish this. >> >>>Regards >>>Harry >>> >>>--- Steve Blair <blairs(a)isc.upenn.edu> a écrit : >>>>Sorry. I don't do diagrams :-) Which piece of this >>>>explanation is unclear? >>>> >>>>-Steve >>>> >>>>hgaillac-sip(a)yahoo.fr wrote: >>>>>Could you please send me a diagram ? >>>>> >>>>>Harry >>>>> >>>>>--- Steve Blair <blairs(a)isc.upenn.edu> a écrit : >>>>>>VRRP for layer 3. H-A woud depend upon your >>>>>>availability requirements. >>>>>>In our case we use an SRV record to identify >>>>>>multiple proxy servers each >>>>>>with their own priority and weight. Phones >>>> >>>>register >>>> >>>>>>using the SRV name >>>>>>as the proxy address. Each proxy uses >> >>t_replicate >> >>>>to >>>> >>>>>>replicate >>>>>>registration data. So far this works for us. >>>>>> >>>>>>_Steve >>>>>> >>>>>>hgaillac-sip(a)yahoo.fr wrote: >>>>>>>Ok so vrrp for layer 2/3 but which solution for >>>> >>>>H-A >>>> >>>>>>? >>>>>> >>>>>>>Harry >>>>>>>--- Steve Blair <blairs(a)isc.upenn.edu> a écrit >>>>>>> >>>>>>>>Harry: >>>>>>>> >>>>>>>>Assuming you are talking about running VRRP >> >>in >> >>>>>>>>your routers and not >>>>>>>>on the Asterisk host itself then the answer is >> >>a >> >>>>>>>>qualified yes. VRRP by >>>>>>>>itself won't give you the transparency of an >> >>SRV >> >>>>>>>>record for identifying >>>>>>>>your proxy servers. It will allow you to have >>>>>>>>automatic failover to >>>>>>>>backup gateways should the primary gateway >>>> >>>>to/from >>>> >>>>>>>>your "SER subnet" fail. >>>>>>>> >>>>>>>>-Steve >>>>>>>> >>>>>>>>hgaillac-sip(a)yahoo.fr wrote: >>>>>>>>>hello, >>>>>>>>> >>>>>>>>>Can we use VRRP when a SER is down ? >>>>>>>>> >>>>>>>>> >>>>>>>>> SER1 (master) >>>>>>>>>sip agents == || === Asterisk Farm==sip/pstn >>>>>>>> >>>>>>>>gateway >>>>>>>> >>>>>>>>> SER2 (slave) >>>>>>>>> >>>>>>>>>Regards >>>>>>>>>Harry >>>>> >>>>>______________________________________________________________________ >>>>>_____ > >=== message truncated === > > > > > > > >__________________________________________________________________________ >_ Nouveau : téléphonez moins cher avec Yahoo! Messenger ! Découvez les > tarifs exceptionnels pour appeler la France et l'international. > Téléchargez sur http://fr.messenger.yahoo.com