Hi, I'm trying to design a network that uses a 4510 with redundant sups in the data center, and a couple of 3560Es as distribution switches that lead to access layer switches. I'd like to split the load on the 2 3560s by running MST and having each working under normal conditions and have the ability to take over the other switch's load in the event one of those 3560s goes down. These 3560s will each have 2 10gb uplinks, and I was wondering if I can use the 2 10gb uplinks on each of the sup 6E engines, even the redundant one to support an uplink from an active 3560 switch. In other words I'd like to have each 3560 use its 10gb uplink interfaces in an etherchannel that runs down to one of the sup engine's 10gb uplinks. Then I would have the other 3560 doing the same thing to redundant sup engine. Will that work, are those uplinks on a redundant sup active even though the sup engine is not the active sup engine?
Starting IOS 12.2.48 with Sup6-E in a redundant config, all 4 10G uplinks are available in 2:1 oversubscribed mode.
The command to enable the 4 10GE ports is:
hw-module uplink mode shared-backplane
we are using one link on each supervisor.
this is an access layer switch.
I can see the CDP neighbors on link te3/1 and te4/1.
Hope to help