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VSP 7200 Communication can not be performed between specific end devices on the same SPBM L2VSN VLAN.

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TitleVSP 7200 Communication can not be performed between specific end devices on the same SPBM L2VSN VLAN.
Symptoms
Customer was not able to communicate between device 1 and devices 3 & 4 on the other side of the SPBM network.

The edge ports has been configured as T-UNI ports.

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Environment
  • VSP 4000
  • VSP 7200
  • VSP 8200
  • VOSS
Cause
Customer have missed configuration of T-UNI I-SID on v-IST peer.

Regarding official documentation "NN47227-510_12_02_ConfiguringFabricBasicsLayer2Services_VOSS" Chapter 5: Layer 2 VSN configuration, page 259:

Note:
If you are configuring a T-UNI to terminate on a port or MLT on a switch in a v-IST switch cluster, you must also configure the T-UNI I-SID on the other switch of the vIST switch cluster. You must configure the T-UNI I-SID on both switches of a v-IST pair. It is not necessary to assign an actual port or MLT to the T-UNI on the second switch.
Resolution
Configure T-UNI I-SID on both v-IST peers.
Additional notes

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