Upgraded to PIX 7.1(2) and have major VoIP problems
I have a PIX 515 at a hub site connected via L2L VPN to a small office. I recently had to upgrade the PIX to 7.1(2) so I can use the Hub-Spoke-Client enhancements but ever since the upgrade I have problems at the small office where the IP phones keep saying Call Manager Down, or they simply disconnect and sit at the registering screen. I never lose connectivity to the hub site and the ping response times are around 30 - 50ms. If I reboot the PIX the phones will stay up for about 50 minutes then it starts all over again. When the phones are down I can still transfer large files to the site and other network services are working normally it's only the phones that seem to be having the problem.
If I replace the PIX with one running 6.3 everything works fine.
Don't know if anyone else has run into this but any advice is welcome.
Re: Upgraded to PIX 7.1(2) and have major VoIP problems
This is in deed a strange behavior. Double check your access-list on the PIX to make sure the required ports are open and also if any "fixup" protocol commands for VoIP traffic. If all is fine, this could be a bug.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...