[c-nsp] CRS-1 MSC, MSC-B, FP40

[Judah Scott]

Thanks for the responses!

-J Scott

On Mon, Nov 9, 2009 at 11:46 PM, Per Carlson <perc69 at gmail.com> wrote:

> Hi.
>
> > What is the difference between the three CRS L3+ forwarding engines?  The
> > datasheets look like straight copy-paste besides the weight and
> > power-ratings.
>
> That's true for MSC and MSC-B. They are virtually the same, but the
> B-version draws less power (and requires a newer XR-version).
>
> > The only downside to FP40 that I have found so far relates
> > to the inability to use SIP-800 (and as a results, older SPAs).
>
> The FP40 is a completely different breed, and as you have found out,
> supports different PLIMS than MSC/MSC-B. These linecards where
> originally designed for the ASR14k (a CRS1-light device), but it were
> pulled from the market before getting released (more or less). The
> downsides of FP40, compared to MSC/MSC-B, are less hardware queues and
> not being able to do 40G at minimal packet sizes.
>
> You can use older SPA's in any of the "Flexible Interface Modules"
> (
> http://www.cisco.com/en/US/prod/collateral/routers/ps5763/data_sheet_c78-553671.html
> and
> http://www.cisco.com/en/US/prod/collateral/routers/ps5763/data_sheet_c78-549654.html
> ).
>
> --
> Pelle
>