Re: 6500 Switching Fabric bandwidth 720 is calculated?

On 2012-01-22 14:58, farhan.anwar_at_gmail.com wrote:
> Backplane is the crossbar switching fabric which has 18 inputs of
> 20gb/s.

That's for Sup720. For VSS Sup720 (the one with PFC3C/CXL) the switch
fabric has actually 20 channels x 20Gbit/s.

Each of the channels can autonegotiate, depending on the capabilities
of the line card - so old CEF256 cards, the one with 8Gbit/s channels,
will be still detected and utilized.

The new Sup2T has switch fabric with two 40Gbit/s channels for each
line card.

> There is a Cisco white paper explaining it, I will search it and post
> later.

Here it is:
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/prod_white_paper0900aecd80673385.html

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