I have 2 x 6509, each 6509 has 2 x Sup720 bundle with 10G port. Can I use 2 x Sup720 to form a
VSL link which make a VSS switch. I don't know can VSS can support redundency Sup720
VSS supports only one Sup per chassis
you need specific type of Sup for supporting VSS because the VSL exports the data plane and the signalling plane to make a single device
The Active Sup controls the linecards of both chassis.
see table 4-1
Hope to help
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