We have a problem with H.323 sessions.. We have upgraded two Cisco ASA 5520 with 8.2(1) version. After this we have problem with H.323 sessions. The sessions are establish through Call Manager and communications works fine some minutes. Then the sessions are lost they don´t hold keep-alive.
We haven't configured yet the h323 debug, but we did another test capturing simple logs from ASDM and we've setup a sniffer capture, and there we see TCP Keep Alive packets between Call Managers are getting lost when the conversation is mantained about 300 sec of duration, and finally the CM sends a RST packet.
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...