pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton))
randy at psg.com
Fri Jan 27 20:02:14 CST 2012
>> when a line card is designed to buffer the b*d of a trans-pac 40g, the
>> oddities on an intra-pop link have been observed to spike to multiple
> Please turn that buffer down.
not my router. research probes seeing fun anomalies around the global
> cribbing from a previous ob where I rolled it out network wide:
> policy-map atm-queueing-out
> class class-default
> random-detect precedence 0 10 40 10
> random-detect precedence 1 13 40 10
> random-detect precedence 2 16 40 10
> random-detect precedence 3 19 40 10
> random-detect precedence 4 22 40 10
> random-detect precedence 5 25 40 10
> random-detect precedence 6 28 40 10
> random-detect precedence 7 31 40 10
> int atm1/0.1
> pvc 1/105
> vbr-nrt 6000 5000 600
> tx-ring-limit 4
> service-policy output atm-queueing-out
> Those packet thresholds were computed as the best balance for
> 6-20MMbps PVC's on an ATM interface.
while i hope few folk other than telephants still have atm <g>, thanks
for posting running code.
one problem is that we do not have good tools to look at a link and
suggest parms. how did you derive those?
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