[nsp] capacity of 7613

[Lincoln Dale]

Hi Anouk,

yes, the 6503/7603 is the same as the 6506/6509/7606/7609;
that is, there are two 'channels' to each 'crossbar'.

the documentation for the 7603 that you're referring to is likely referring 
to the fact that the switch has both a 32gbit/s 'bus' (for "classic" 
linecards, or linecards that are not crossbar-enabled) as well as crossbar 
connectivity.
this is mostly historical, and exists because of the fact that you could 
take an original "classic" layer2-only linecard from ~5 years ago, put it 
into a system equipped with a Sup720 and gain all the additional 
MPLS/ipv4/ipv6/Ethernet/layer3 functionality.

of course, with a Sup720 in a 7603, you will have most of the 'channels' of 
the crossbar going nowhere -- so it won't be "720gbit/s" of capacity -- but 
then again, its unlikely you could make use of that capacity within 2 
linecard slots either. :-)


cheers,

lincoln.

At 04:43 PM 14/07/2004, Anouk Rocher wrote:
>Lincoln,
>
>Thanks for your excellent reply. I am wondering if the
>architecture that you outlined applies to the 7603 as well.
>Specifically, if I have a WS-SUP720--3BXL in a 7603, does it
>deliver 40G of capacity to each of the remaining two slots (or
>to the remaining one if I use a redundant configuration).
>
>I ask this because some of the 7603 documentation mentions 32G
>of aggregate capacity across the backplane. Ie it appears that
>while the SUP720-3BXL can handle vastly more capacity, the
>backplane on a 7603 would force it down to a total of 32G.
>
>Thanks.
>Anouk.
>
>
>
>________________________________________________
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>
>---- On Thu, 08 Jul 2004, Lincoln Dale (ltd at cisco.com) wrote:
>
> > At 12:05 PM 8/07/2004, Anouk Rocher wrote:
> > >I am having some trouble deciphering cisco's slot allocation
>for
> > >the 7613. I am hoping somebody here can help me out -
> > >
> > >What is the maximum switching capacity one can get with a
>single
> > >WS-SUP720-3BXL engine, in a 7613? Can the remaining 12 slots
>be
> > >filled up with GE ports and will they go at line rate with a
> > >single WS-SUP720-3BXL?
> >
> > the answer to this is dependent on what linecards you're
>using.
>[snip]