Distributed CEF uses IPC (inter process communications) to update CEF table on the VIPS.
In some occasions, where a lot of routing updates are received or when we have to delete
an important amount of routes, we may be running
short on IPC buffers causing distributed CEF to be disabled on the linecards. It has to reenabled
again via "ip distributed cef". The number of IPC buffers has been made tunable to deal with that
I would recommend you configure : "ipc cache 5000" in global configuration mode and you should
get rid of this problem.
Having said that, you're also getting a traceback which implies a software bug, but I can't decode it without a "sho ver" output. I would suggest that if increasing the ipc buffers doesn't help, open a TAC case and include a "sho tech" output from this router. They'll be able to figure it out then.
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...