[c-nsp] Snmp monitoring of 10GigE Interfaces

[Simon Leinen]

Rhett Bassett writes:
> Increase your sample rate - you're probably hitting the SNMP counter
> rollover.

Umm... see below.

Bill Nash writes:
> Alternatively, make sure you're using the 64 bit counters (ifHCInOctets 
> ifHCOutOctets).

Yes, that's a better idea.  A 10GE interface will wrap a 32-bit
counter in 3.43 seconds when fully utilized.

On the other hand, rollover won't be a problem with 64-bit counters
until 491Pb/s (491 million Gb/s), with a five-minute polling interval.
-- 
Simon.