Re: [Serusers] failover and VRRP

On Wednesday 01 February 2006 15:21, Steve Blair wrote: BTW it should be fairly easy to extend this check to a REGISTER with authentication. sipsak will return the same Nagios compliant return codes. You could even think about trying an INVITE, allthough this might depend a lot on your SER config if the self-INVITE's from sipsak will pass trough it.

Nils >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 >> >>