[c-nsp] Freezing counters at 6500

[Grzegorz Janoszka]

Hi,

We have several 6500's, some of them heavily loaded. We use snmp to 
graph traffic on all interfaces - just the simplest solution. Since some 
time we have had an issue with the interface counters. When the CPU box 
is really loaded (usually synchronization of BGP sessions), the counters 
just freeze. The important thing is that only the displaying freezes, 
the counters are still counting. Both snmp and 'show interface' data is 
frozen and does not update for various time - from 30 seconds to 3-4 
minutes. As the result we have spikes on graphs - there is always spike 
down, when snmp gives frozen data from the past, and after that spike 
up, when the counters unlock and start displaying correct data.

Have you had similar problems? It is not the big issue, only the graphs 
look not so nice with the rows of spikes down/up. If there is a simple 
solution to the problem we would like to know it.

Kind regards,

-- 
Grzegorz Janoszka