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root@vtep-1# show | display set | match esi set interfaces xe-0/0/0 esi 00:01:01:01:01:01:01:01:01:02 set interfaces xe-0/0/0 esi all-active root@vtep-2# show | display set | match esi set interfaces xe-0/0/1 esi 00:01:01:01:01:01:01:01:01:02 set interfaces xe-0/0/1 esi all-active
I do not see any vtep as a backup forwarder which I saw in my previous training lab where the ae0 interface is used. Are they different ?This following is what I saw here for this topology
root@vtep-1# run show evpn instance designated-forwarder Instance: default-switch Number of ethernet segments: 4 ESI: 00:01:01:01:01:01:01:01:01:02 Designated forwarder: 10.68.191.233 ESI: 05:00:00:ff:fe:00:00:03:e8:00 ESI: 05:00:00:ff:fe:00:00:04:08:00 ESI: 05:00:00:ff:fe:00:00:04:4c:00 {master:0}[edit] root@vtep-1# run show evpn instance backup-forwarder Instance: default-switch Number of ethernet segments: 4 ESI: 00:01:01:01:01:01:01:01:01:02 ESI: 05:00:00:ff:fe:00:00:03:e8:00 ESI: 05:00:00:ff:fe:00:00:04:08:00 ESI: 05:00:00:ff:fe:00:00:04:4c:00 root@vtep-2# run show evpn instance designated-forwarder Instance: default-switch Number of ethernet segments: 5 ESI: 00:01:01:01:01:01:01:01:01:01 ESI: 00:01:01:01:01:01:01:01:01:02 Designated forwarder: 10.68.191.205 ESI: 05:00:00:ff:fe:00:00:03:e8:00 ESI: 05:00:00:ff:fe:00:00:04:08:00 ESI: 05:00:00:ff:fe:00:00:04:4c:00 {master:0}[edit] root@vtep-2# run show evpn instance backup-forwarder Instance: default-switch Number of ethernet segments: 5 ESI: 00:01:01:01:01:01:01:01:01:01 ESI: 00:01:01:01:01:01:01:01:01:02 ESI: 05:00:00:ff:fe:00:00:03:e8:00 ESI: 05:00:00:ff:fe:00:00:04:08:00 ESI: 05:00:00:ff:fe:00:00:04:4c:00
Another question is BUM from VTEP-5 is forwarded by the designated forwarder to L2 switch, the L2 switch then forwards it to another VTEP-X which sends it back VTEP-5. How to prevent this ?thanks a lot for coaching !!!!
root@vtep-1# show | display set | match esi set interfaces xe-0/0/0 esi 00:01:01:01:01:01:01:01:01:02set interfaces xe-0/0/0 esi all-activeroot@vtep-2# show | display set | match esi set interfaces xe-0/0/1 esi 00:01:01:01:01:01:01:01:01:02set interfaces xe-0/0/1 esi all-active
root@vtep-1# run show evpn instance designated-forwarder Instance: default-switch Number of ethernet segments: 4 ESI: 00:01:01:01:01:01:01:01:01:02 Designated forwarder: 10.68.191.233 ESI: 05:00:00:ff:fe:00:00:03:e8:00 ESI: 05:00:00:ff:fe:00:00:04:08:00 ESI: 05:00:00:ff:fe:00:00:04:4c:00{master:0}[edit]root@vtep-1# run show evpn instance backup-forwarder Instance: default-switch Number of ethernet segments: 4 ESI: 00:01:01:01:01:01:01:01:01:02 ESI: 05:00:00:ff:fe:00:00:03:e8:00 ESI: 05:00:00:ff:fe:00:00:04:08:00 ESI: 05:00:00:ff:fe:00:00:04:4c:00root@vtep-2# run show evpn instance designated-forwarder Instance: default-switch Number of ethernet segments: 5 ESI: 00:01:01:01:01:01:01:01:01:01 ESI: 00:01:01:01:01:01:01:01:01:02 Designated forwarder: 10.68.191.205 ESI: 05:00:00:ff:fe:00:00:03:e8:00 ESI: 05:00:00:ff:fe:00:00:04:08:00 ESI: 05:00:00:ff:fe:00:00:04:4c:00{master:0}[edit]root@vtep-2# run show evpn instance backup-forwarder Instance: default-switch Number of ethernet segments: 5 ESI: 00:01:01:01:01:01:01:01:01:01 ESI: 00:01:01:01:01:01:01:01:01:02 ESI: 05:00:00:ff:fe:00:00:03:e8:00 ESI: 05:00:00:ff:fe:00:00:04:08:00 ESI: 05:00:00:ff:fe:00:00:04:4c:00