Catalyst 6500 SUP-720

Unanswered Question
Aug 27th, 2009

Hi all,

Cal anu one provide the folowing information:

Hi have a cisco 6509 with several cards WS67XX cards, at same point in time the customer inserted a WS61XX card at the chassis and after that we notice that all the cards switch to the 16G shared bus. Can any one provide me same documents with explanation regarding the the use of diferente card types WS61/WS65/WS67 swith SUP-720.


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Giuseppe Larosa Thu, 08/27/2009 - 07:45

Hello Patricio,

C6500 architecture can be a good starting point:


the other linecards should use the shared bus when talking to ports of the WS61XX card.

Hope to help


Joseph W. Doherty Thu, 08/27/2009 - 13:15

Mixing card types can lead to decreased performance. For instance, 67xx cards are fabric only and 61xx cards (I recall) shared bus only. Believe traffic would need to flow via sup between them. (Giuseppe's references should provide some further details.)


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