[c-nsp] WS-X6724/6748 optimization

[Tim Stevenson]

The port mapping for these cards is here:
http://bock-bock.cisco.com/~tstevens/FAQs/module-asic-mappings.html

There is no oversubscription built in to the Rohini-Janus 
interconnect. The oversubscription on these cards is from janus to 
the fabric. Also intra Janus there is a 26Mpps limitation.

Tim

At 04:39 PM 1/18/2007 -0500, Jeff Kell noted:
>Having learned blade specific configuration considerations "after 
>the fact" in the past with regard to port/ASIC mapping and 
>throughput limits (e.g., WS-X6348 with 4 COIL ASICs, ports 1-12, 
>13-24, 25-36, 37-48) I thought I would ask in advance of setting up 
>configurations on these blades for etherchannel performance.  For 
>example, on cards like the WS-X4448, no sense in doing gigabit 
>etherchannel on ports of the same ASIC when the ASIC itself is 
>limited to a gigabit.  Don't want to make the same mistakes again :-)
>
>The WS-X6748 for example shows:
>
> > Module in slot 2 has 3 type(s) of ASICs
> >         ASIC Name      Count      Version
> >             JANUS          2      (1.0)
> >               SSA          2      (9.0)
> >            ROHINI          4      (1.5)
>
>(The 6724 shows 1/1/2 for same ASICs)
>
>I'm guessing the 'ROHINI 4' is mapping these ports 
>similarly?  (1-12, 13-24, 25-36, 37-48?)
>
>What's the oversubscription rate?  (Praying it's not 12-to-1...)
>
>This is on a 6509E chassis, Sup720s.
>
>Jeff
>
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Tim Stevenson, tstevens at cisco.com
Routing & Switching CCIE #5561
Technical Marketing Engineer, Catalyst 6500
Cisco Systems, http://www.cisco.com
IP Phone: 408-526-6759
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