[c-nsp] DoS tracking on the 6500

Dale W. Carder dwcarder at doit.wisc.edu
Thu Mar 17 18:34:28 EST 2005


Do you have "ip route cache flow" on your interfaces?

Dale


On Mar 17, 2005, at 5:19 PM, Jon Lewis wrote:

> On Thu, 17 Mar 2005, Dale W. Carder wrote:
>
>> What are your netflow/mls settings, specifically are you recording src
>> and dest information, because perhaps dest-only didn't capture the
>> data you needed?  Are you sampling?  What is your table size set at?
>
> Running just IOS, 122-18.SXD3
> #sh conf | inc  mls
> mls aging fast time 8 threshold 3
> mls aging long 480
> mls aging normal 32
> mls flow ip interface-full
> mls flow ipx destination
> mls nde sender version 5
> mls rate-limit unicast cef receive 10000
> mls qos
>
>> Off the top of my head (we don't run hybrid anymore) I want to say
>> that the command to try is "sh mls ent long".  In native mode
>> it's something along the lines of "sh mls netflow ip nowrap".
>
> Ah...I didn't notice the nowrap option last night and was cursing IOS 
> for
> ignoring my term width.  That makes the output easier on the 
> eyes...but it
> still looks like just a tiny sampling of the real data.
>
> ----------------------------------------------------------------------
>  Jon Lewis                   |  I route
>  Senior Network Engineer     |  therefore you are
>  Atlantic Net                |
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