I have redundant PIX 515's running ver. 6.2(1). Every few occasions, the primary PIX FW mysteriously failovers to the secondary. When this occurs, all traffic flowing through the now active FW is being blocked.
I tried simulating a failover using the 'failover active' command on the primary and surprisingly the secondary PIX automatically takes over with no problems.
Did anyone experience this weird anomaly? Please respond if you have possible suggestions or troubleshooting tips that I may use to resolve this issue.
Am i correct on the reasoning of your statement of disabling spanning tree?
...So if a link goes down on the Primary PIX FW, say inside i/f, status will remain failed and not go into standby because the switch port that the inside interface is on will remain in blocking state. In order for the failed primary to become a standby, the inside i/f must be able to transmit hello packets. With a blocked port, due to spanning tree enabled, the failed primary will never be able to become a standby to the now active secondary.
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...