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BUM loop in VXLAN multisite CML

exness-noc
Level 1
Level 1

We have vxlan multisite topology in CML. When we create l2vni between site and start ping from client in site 1 to client in site 2 we get 100% CPU LOAD on BGW because on arp loop.

APR request goes from the 1st site bgw  to the 2nd site bgw, then the same ARP request + 14 bytes goes from the 2nd site bgw towards the 1st bgw, then APR request goes from the 1st site bgw  to the 2nd site bgw plus another 14 bytes, etc. The frame increases in size each time and at some point begins to fragment. Is this expected behavior for a virtual nexus 9k in the role of spine + bgw?

16 Replies 16

ams-bgw-1(config-if)# evpn multisite dci-tracking split
^
% Invalid command at '^' marker.

evpn multisite border-gateway 64601

Under this add command 

evpn multisite dci-tracking

Or in config mode' dont config it under nve interface 

Sorry for late reply 

MHM

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