Why don't channel-group numbers match on a VSS port-channel link?

Hi All,
I have two 6509's that are VSS'd together via four 10gig links on each side. The configuration was done before I started this job, but in reviewing the configs I see that the 10gbps VSS heartbeat links are port-channeled together on each side, but one side is channel-group 2, while the other end of the bundle is channel-group 1.
I thought that channel-group numbers needed to match on both ends of the port-channel for it to form correctly?
I'm guessing that this has to happen because the switches are virtually one, so you can't put all 8 links into the same channel-group number or there would be nothing to connect to on the other side. Therefore, the "switch virtual link #" command is the real code that tells the switch where the other end of the link is, regardless of channel-group number, correct?

Dean,
The channel-group number does not have to be the same on each end. The four ports on switch A have to be in the same channel-group, and the four ports on switch B have to be in the same channel-group, but there's no communication across that line about what the channel-group is called. It's just a name. From a design standpoint it is nice to have them the same on both sides, but it's not always simple to allow for that in the design of a network.
-Jameson

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