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2020
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Aggregate two WAN links using LACP on Cisco C9500-24Y4C switches

As per the business requirement, we need to aggregate two WAN links that are connecting from the data center to a branch office. At both locations, we are having C9500-24Y4C switches and I have configured both the physical interfaces with LACP. Hove ever the EtherChannel is not forming. I have checked the LACP counter status and only the "Send" count is incrementing. Seems both devices are sending but not receiving the LACPDUs. Our WAN underlay network is a VPLS provided by a third-party WAN provider.

 

I have requested to enable LACPDUs over the VPLS network, and the WAN provider confirmed that they enabled the same from their end but still no luck.

 

Are there any additional configurations that need to be done from our end apart from the default LACP configs?

 

The current configuration in the DC end is below

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interface TwentyFiveGigE1/0/5
channel-group 14 mode active
end




interface TwentyFiveGigE2/0/5
channel-group 14 mode active
end


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