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connecting down stream sw with port ch to 2 5548 running VPC

k.langley
Level 1
Level 1

        I have 2 5548 runing vPC. I wan to connect another 5548 to those using a Port-channel. the 3 rd switch is for device with only 1 NIC and to keep having fanthom ports.

When I create another Port-channel on the 3rd sw and connect it an interface of the VPC  switches I always get a suspend interface due to SPanning tree.

how do you connect a downstream switch portchannel to a VPC paired switches?

2 Replies 2

LA-Engineer
Level 1
Level 1

Can you post the output of the 'sh vpc' command? Highlight the vPC you have setup for the new switch.  It would also help if you post the configuration of all the ports involved on all three switches.

sorry to not get back but it was a bad SFP

 

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