I have a ASA 5505 (version 7.2) connected to a 5510 at HQ as a hardware client.
The keepavlive messages from the IP phones connected to the 5505 are getting lost and as a result the phones are continually re-registering to the failover call manager server and then back to the primary call manager server.
If I plug a device into the back of the phone on the PC port the phone works fine and the phone stays registered to call manager. Any ideas?
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...