FYI both the alternate and assigned gatekeeper require that the originating gatekeeper doesn't go down. If it goes down then the function will not work. The Auto discovery feature is where a GRQ message is broadcast on the network and the gatekeeper responds. This can be used for disaster recovery for endpoints on a LAN so when the main gatekeeper goes down the endpoints can be power cycled and the replacement gatekeeper will be found however if both gatekeepers are running some endpoints may register at one gatekeeper and other endpoints at the other. It also is not a solution for endpoints on the public internet. The correct solution is to use H.323 Annex O and use DNS SRV records. The H323rs record can be used for registration fall over. $ORIGIN example.com. _h323rs._udp SRV 0 1 2517 gk1.example.com _h323rs._udp SRV 0 1 2517 gk2.example.com The endpoint will attempt to register to "example.com" It will first try Gk1 then if that fails it will attempt to register to Gk2. The problem is that the only endpoint that supports this is Spranto www.spranto.com . It is also one of the only endpoints that also supports plain DNS addresses. This is very disappointing. GnuGk does support _h323ls record for remote gatekeeper failover. (SRV routing policy) Simon -----Original Message----- From: Jan Willamowius [mailto:jan@xxxxxxxxxxxxxx] Sent: 14 April 2011 17:18 To: openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Subject: Re: Gatekeeper Redundancy Hi Lucas, you can assign an Alternate gatekeeper to your endpoint using AlternateGKs= or [RasSrv::AlternateGatekeeper] and they switch over to this one when they can't reach their original gatekeeper. http://www.gnugk.org/gnugk-manual-4.html#alternategks http://www.gnugk.org/gnugk-manual-7.html#ss7.8 If your endpoints support H.323v6, then you can set an Assigned gatekeeper through [RasSrv::AssignedGatekeeper], which works even better than an Alternate gatekeeper. http://www.gnugk.org/gnugk-manual-7.html#ss7.9 IP failover can also be done, but its much harder to configure than the above two. Regards, Jan Lucas Phelps wrote: > Hi all, > > We are using GnuGk as a single gatekeeper for a multisite deployment (single zone). I am working on a disaster recovery site where we will replicate our data. What is the best way to create a redundant gatekeeper and have my endpoints re-register to it? Especially if the IP address is different. > > It looks like my Polycom PVX software clients and Tandbergs only accept IP addresses for the gatekeeper? They also have an 'auto' option, how does that work? > > Any additional ideas or tips are greatly appreciated. > > Thanks, > > Lucas Phelps, Kennedy and Coe LLC, lphelps@xxxxxxxx -- Jan Willamowius, jan@xxxxxxxxxxxxxx, http://www.gnugk.org/ ---------------------------------------------------------------------------- -- Benefiting from Server Virtualization: Beyond Initial Workload Consolidation -- Increasing the use of server virtualization is a top priority.Virtualization can reduce costs, simplify management, and improve application availability and disaster protection. Learn more about boosting the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev _______________________________________________________ Posting: mailto:Openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Archive: http://sourceforge.net/mailarchive/forum.php?forum_name=openh323gk-users Unsubscribe: http://lists.sourceforge.net/lists/listinfo/openh323gk-users Homepage: http://www.gnugk.org/ ------------------------------------------------------------------------------ Benefiting from Server Virtualization: Beyond Initial Workload Consolidation -- Increasing the use of server virtualization is a top priority.Virtualization can reduce costs, simplify management, and improve application availability and disaster protection. Learn more about boosting the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev _______________________________________________________ Posting: mailto:Openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Archive: http://sourceforge.net/mailarchive/forum.php?forum_name=openh323gk-users Unsubscribe: http://lists.sourceforge.net/lists/listinfo/openh323gk-users Homepage: http://www.gnugk.org/
