[c-nsp] SRB1 BGP bug?
Justin Shore
justin at justinshore.com
Thu Jan 10 16:06:11 EST 2008
Phil Rosenthal wrote:
> I don't have much to offer for 'help' here, but we ran into exactly this
> same issue with all eBGP peers on SRB1, so it's certainly not an iBGP
> only bug.
I searched in the new Bug Toolkit and couldn't find a related bug so I
opened a TAC case. My engineer found CSCsi88010 which appears to be the
problem.
CSCsi88010 Bug Details
New BGP neighbor or shutdown neighbor restarts after reload or remot
Symptoms: BGP sessions that are administravely shutdown before a reload
lose the "shutdown" state after the reload, even though the
configuration with the "neighbor x.x.x.x shutdown" statement was written
to nvram. The output of "show ip bgp summ" shows the peer in
"shutdown(idle)" state for the first few minutes after reload but then
the peers changes to "established" state.
Condition:
The issue has been seen with latest 7600 IOS software for RSP720/MSFC4
Workaround:
There is no workaround.
Status
Fixed (Resolved)
Severity
3
Product
Cisco IOS software
Technology
IP Routing
1st Found-In
12.2SRB
Fixed-In
12.2(32.8.75)SR
12.2(33.1.3)SRB
12.2(33)SRB2
Related Bugs
BGP Peers coming up with neighbor x.x.x.x shutdown in startup config
Symptom: BGP neighbours come up after reload with "neighbor x.x.x.x
shutdown" in startup config; then shutdown after about ~2 min.
Workaround: Unconfigure neighbour prior to reload
I didn't notice the 2 minute shutdown window thing. I worked faster
than that this morning. So according to the bug details it's supposed
to be fixed in SRB2. I'll put that on my list to upgrade for some
future window. I asked the engineer to update the conditions section to
also list SUP720/MSFC3.
Thanks
Justin
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