[c-nsp] Funny (and hard to describe) AWOL routes

[Rick Kunkel]

Thanks for the input all.  It appears unanimous:  My TCAM is stuffed.  I'm 
a little baffled by the EIGRP aspect (which I don't think anyone 
addressed), but it makes sense that it would all be using the same 
resources.

Is there not a simple command to show the used capacity of the TCAM?

Thanks!

--Rick

On Thu, 13 Aug 2009, Jon Lewis wrote:

> On Thu, 13 Aug 2009, Jared Mauch wrote:
>
>> Your tcam is full. It may not log that, you likely need 12.2sxe or sxf to 
>> see the logs on sup2. Cut down the number of routes you listen to from your 
>> upstreams, having them send you just their customer routes and use default 
>> for the rest.
>> 
>> In sup720 and sup1a when the tcam is full it would then process switch. Not 
>> sure on sup2 but I presume it's the same.
>
> When we were discussing this on-list a year or more ago, I think someone said 
> that what the sup2 did when tcam filled was IOS version dependent. Newer IOS 
> would process switch.  Older IOS would blackhole.  I never verified this.
>
> I really expected to see messages like this about a year ago.  A full view is 
> around 290k routes...way more than the sup2 tcam can handle.  This guy has to 
> have been having issues for months.
>
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> Jon Lewis                   |  I route
> Senior Network Engineer     |  therefore you are
> Atlantic Net                |
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