Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Control Plane Protection rate-limits (SNMP) on IOS-XR

I'm doing a large-scale snmpwalk against an ASR9k (with IOS-XR v4.2.0) running as a provider edge router (full bgp table) and pulling the full contents of the BGP route table.  On other routers, this completes within my timeout window, but not on the ASR9k.

Figuring that this has to do with CoPP rate-limits, I've adjusted the rate-limits to ridiculously high values.  E.g.

lpts pifib hardware police location 0/0/CPU0

flow snmp rate 10000000

But still, the walk doesn't complete in an acceptable amount of time.  Manual snmpwalks display a rate slower than even 7600s, with occassional stutters.  CPU on the box doesn't even register that anything extraordinary is going on (@ 2 - 3%), and "show lpts pifib hardware police location" shows that there are 0 drops against SNMP.

I figure it's likely a knob I haven't turned yet - either some traffic shaping mechanism or some combination of process scheduling/priority with SNMP.

Any ideas out there?


-- Gil

Everyone's tags (3)
New Member

Control Plane Protection rate-limits (SNMP) on IOS-XR

BTW, don't know why but the **** above should have read k - n - o - b.  Probably the decorum police checking in...