Cisco Bug: CSCsz05181 - stack corruption crash with BFD configured
Apr 04, 2018
- Cisco IOS
Known Affected Releases
12.2(32.8.11)SR186 12.2(33)SRC3 12.2(33)SRC4 12.4(24.6)T5
Symptoms: A router may reload unexpectedly. Conditions: The symptom is observed when the router has Bidirectional Forwarding Detection (BFD) configured and is actively sending keepalives. The crash has multiple possible triggers: - It can be triggered by certain show commands (<CmdBold>show bootvar<noCmdBold> and <CmdBold>show c7200<noCmdBold> are known to cause the problem). The issue will not be seen on every invocation of the commands. It is a rare timing condition, so the probability of the crash increases as the commands are run more frequently. - It can also be triggered by large scale BFD deployments (hundreds of sessions on a single router).
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