[c-nsp] Adjusting TCAM allocation weird behavior on 7600

Gert Doering gert at greenie.muc.de
Tue Aug 5 15:45:11 EDT 2014


Hi,

On Tue, Aug 05, 2014 at 06:28:06PM +0100, Antonio Soares wrote:
> As already mentioned, the sum should be 1024k, for example, I have this on a
> SUP720-3BXL:
> 
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> sup720-3bxl#show mls cef maximum-routes
> FIB TCAM maximum routes :
> =======================
> Current :-
> -------
>  IPv4                - 1007k 
>  MPLS                - 1k (default)
>  IPv6 + IP Multicast - 8k (default)
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

I'd not recommend doing that today... IPv6 global table is coming close
to 20k, and do you really want to reload all your boxes to enable IPv6?

We run 

 IPv4                - 700k 
 MPLS                - 16k 
 IPV6                - 100k 
 IP multicast        - 52k (default)

plus filtering on "out of region" /23+/24 (defaulting to upstreams), so
we expect this to last for a few more years, and then the sup720s are
going to retire to "somewhere where full tables are not needed".

gert
-- 
USENET is *not* the non-clickable part of WWW!
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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