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Two of our four nexus boxes are reporting 50% CPU utilization for the SNMP daemon alone. We tried removing the community string and narrowing the SNMP ACL down to only one box but it's still pegged. Ran a debug and this is the output - any thoughts...
Found this on Cisco's website:At the global level, you can enable BPDU filtering on Port Fast-enabled interfaces by using thespanning-tree portfast bpdufilter default global configuration command. This command preventsinterfaces that are in a Port Fa...
Since Cisco doesn't allow the CST root to be outside the region when interacting with a PVST+ switch, does that also mean that only one MST region can be presesnt? (imagine MST region A connected to MST region C through region B which only runs PVST...
Say switch A and C are connected via switch B (which has spanning-tree disabled) and a loop is created on B. What does switch A do when it receives inferior BPDU's from itself?
Thanks Jon, but doesn't that defeat the purpose of filtering BPDU's? Please forgive me if I sound ignorant. Also, is the behavior the same on non-portfast enabled ports?
Peter, as always, thank you for the detailed response! The question originally stems from an article I stumbled across that described the CST root placement inside the region:It's under scenario 3 - PVST+ and MSTP interoperation:http://blog.ine.com/...
Thanks Gurpreet - I undstand that though... but my question was what if a loop was created on switch B? (ports 9 & 10 on switch B inadvertently connected), and B has spanning tree turned off. BPDU from switch A reaches B on 1/1 and gets looped on po...
