[c-nsp] Sup720 vs RSP720 - Difference?

[Rick Ernst]

Thanks for all the great feedback and information, folks!

So, the Sup720/RSP720 uses DRAM to store RIB + other stuff, and the FIB is
in TCAM either on the Sup (if no DFC), or on the DFC?

It looks like the extra memory on the RSP720 vs Sup720 would be good for
multiple feeds, but the TCAM (potentially divided between IPv4 and IPv6)
is limited to 1 million entries (2 entries per IPv6) regardless of
platform?

IIRC TCAM is also used for ACLs and, as somebody else mentioned, also for
Netflow?  Is there a different set of TCAM between FIB, ACLs, and NetFlow,
or does everything combined have to fit into the same 1M entries?


On Fri, June 19, 2009 10:30, Gert Doering wrote:
> Hi,
>
> On Fri, Jun 19, 2009 at 09:32:25AM -0700, Rick Ernst wrote:
>> On the subject of memory and DFCs... do the DFCs also support 4GB for
>> the
>> FIB, or is this an apples vs oranges comparison?
>
> The DFC is the same, and its FIB memory is limited by TCAM (1 million
> entries on the -XL) not by DRAM.
>
> gert
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>