On Mon, 2011-05-30 at 23:15 -0400, Jeff LaCoursiere wrote: > > On Mon, 30 May 2011, Sherwood McGowan wrote: > > > True, but with all due respect, if the cache's TTL expires and the OP's > > PBX cannot reach an external DNS server, they have bigger problems ;-) > > > > Slainte all! > > The Mick > > > > I couldn't disagree more. In fact I think this problem is more serious > than it is getting credit for, when asterisk is in use in places where > Internet connectivity is far from stable. I have several hotels that have > gone without Internet connectivity for days, and somewhere between one and > three days down they can only spottily call within the system, and can't > make outbound calls on their voice T1. Its certainly true that they were > suffering without Internet access, but it is very hard to explain to the > owners why they can't use their phones. In fact the symptoms are very > strange - inbound calls on the T1 get the auto-attendant, but internal > transfers fail. No one can call outbound, and only *sometimes* do > internal extension to extension calls fail. > > I still scratch my head about what exactly asterisk is trying to lookup > that keeps it from being able to place internal SIP calls from extension > to extension, and sadly the few times this has occurred I wasn't around to > debug. > > Hasn't anyone managed to solve this with something better than a caching > DNS server, which seems to only last a short while? What exactly is going > on that is failing? >
What kind of info is it about? If it is the hostname of _local_ machines/clients, you should be authoritive. That should keep asterisk happy. If it is about remote nodes, well if your isp-connection is lost, you can not contact them anyway ;-( So run locally your bind-server, authoritive for your own addresses, and caching for external ones. hw -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users