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I feel like you could refer to the link below for some clue. vPC itself is simple, but if anything else like multicast, vxlan is involved.... https://www.cisco.com/c/en/us/support/docs/ip/multicast/214140-multicast-forwarding-in-vpc-based-on-loc.html
有可能是bug行为https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvp99738not an operation impacting bug Symptom: incorrect syslog when core copy fails. Conditions: if core copy fails due to huge file size or tftp upload failure or file missing, incorrect sys...