[c-nsp] Catalist 3550 need help with NetFlow

[Daniel Ginsburg]

Nikolay Pavlov пишет:
> On Thursday,  4 May 2006 at 12:44:23 +0000, Kristofer Sigurdsson wrote:
>> Hi Nikolay,
>>
>> You'll probably get a lot of replies on this one - Netflow is not
>> supported on the Cat3550.  It does not have the hardware support.  The
>> commands are there, but it's not supported and does not work.
> 
> Yes i know that this command in not supported, but i have exactly the
> same 3550(CORE) with Version 12.1(19)EA1a against Version 12.2(25)SE
> on this switch and it works on CORE:
> 
> cs3550-Core-TOR#sh ip flow export
> Flow export is enabled
>   Exporting flows to xx.xx.48.25 (3000)
>   Exporting using source IP address xx.xx.48.18
>   Version 5 flow records
>   52472094 flows exported in 2151033 udp datagrams
>   0 flows failed due to lack of export packet
>   35050 export packets were sent up to process level
> 
> 

You will get netflow export for traffic forwarded with software on
switch CPU, but no netflow for hardware switched traffic. If you have it
working on some switch, then you must have violated some of many
limitations of the platform and all your traffic flows through the
switch CPU, which basically renders your switch useless.

-- 
dg