[c-nsp] can't be -- output discards on 6500 gig-e

[Marcel Lammerse]

If the polling interval of typical commands is just too large to detect 
queues filling up on the interface, you could configure an output CAR 
policy that matches your maximum output rate and has an exceed action 
of permit.

Here's an example :

conf t
int ser 0
rate-limit output 100000 15000 15000 conform-action transmit 
exceed-action transmit
end

then, watch the traffic with

cisco-adsl#sh int seri0 rate-limit
Serial0
   Output
     matches: all traffic
       params:  96000 bps, 15000 limit, 15000 extended limit
       conformed 0 packets, 0 bytes; action: transmit
       exceeded 0 packets, 0 bytes; action: transmit
       last packet: 1949010612ms ago, current burst: 0 bytes
       last cleared 00:01:15 ago, conformed 0 bps, exceeded 0 bps
cisco-adsl#

And see if you see packets exceeding the policy.

The router's polling interval for car is much much more granular than 
any snmp polling or show interface command you could ever do.

-Marcel

On Jul 30, 2004, at 4:03 PM, Mikael Abrahamsson wrote:

> On Fri, 30 Jul 2004, Cheung, Rick wrote:
>
>> 	I use STG.exe, a 1 file application that can snmp poll the
>> interface every 1 second or less, to capture more realtime utilization
>> stats. You'll need to know the OID.
>>
>> http://leonidvm.chat.ru/
>
> When I tried polling a 3600 every 10 seconds with a utility I got 
> results
> that indicate that it only updates the snmp pollable counters every 30
> seconds or so. YMMV.
>
> -- 
> Mikael Abrahamsson    email: swmike at swm.pp.se
>
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