[c-nsp] Cisco ASR1k Slow response for show ip cache flow

Mauritz Lewies mauritz at three6five.com
Wed Nov 9 11:17:30 EST 2011


Thanks

I tried using the escape but this did not help.

Its faster to export the whole netflow table to text via "show ip cache flow | tee url" then run a grep in that file than to run it on the ASR direct.

I suspect it's software related, seems like a visit to TAC is in order...



On 09 Nov 2011, at 11:21 AM, Simon Leinen wrote:

> Mack McBride writes:
>> It could be the specific match string.
> 
> Right, especially if there are many dots in the regexp.
> 
>> What match is timing out?
> 
> If there are dots, try to escape them (e.g. "| include 192\.0\.2\.").
> But the output volume of "show ip cache flow" is probably also
> significantly larger than the output of "show ip bgp".
> 
> On the Catalyst 6500 platform, there are handy option for the equivalent
> of "show ip cache flow" to narrow the output to certain
> source/destination subnets or UDP/TCP port numbers.  That is more
> efficient than having the router convert the entire Netflow table to
> text and then filtering 99.9% of the text away by regexp.  Does the
> ASR1k software have these kinds of options?
> 
> Best regards,
> -- 
> Simon.




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