Troubleshooting Guide

For more information about infrastructure and services configuration, see Configuring Avaya
Fabric Connect on VSP Operating System Software, NN47227-510.
5. Ensure that you enable the CFM configuration.
a. Ensure a CFM maintenance-association exists:
show cfm maintenance-association
b. Ensure a CFM maintenance-domain exists:
show cfm maintenance-domain
c. Ensure a maintenance-endpoint exists in the MEP ID column and is enabled in the
ADMIN column:
show cfm maintenance-endpoint
6. Ensure a Customer VLAN (C-VLAN) exists and ensure you add UNI ports to the C-VLAN.
a. Display C-VLAN information:
show vlan i-sid
b. Display ports for the C-VLAN:
show vlan members port {slot/port[/sub-port][-slot/port[/sub-
port]][,...]}
c. Display NNI and UNI receivers:
show isis spbm ip-multicast-route detail
7. Ensure that you assign the same I-SID to the C-VLAN on all of the BEBs where you
configure the C-VLAN:
show vlan i-sid
8. Ensure that you enable IP Multicast over Fabric Connect globally:
show isis spbm
9. Ensure the you enable IGMP Snooping on the C-VLAN on all of the Backbone Edge Bridges
(BEBs). Ensure the protocol configured on the VLAN added is snoop-spb in the MODE
column, which indicates IGMP is enabled on a VLAN with an associated I-SID (IP Multicast
over Fabric Connect for a Layer 2 VSN):
show ip igmp interface
10. Ensure that you enable IGMP Snooping on access Layer 2 switches to prevent flooding of
multicast traffic to non-receiver ports:
show ip igmp snoop-trace
show ip igmp interface
11. Ensure that the IGMP version used by the multicast hosts and the Layer 2 switches outside
the SPBM network is the same as the IGMP version configured on the C-VLAN:
show ip igmp interface
Troubleshooting IP Multicast over Fabric Connect for Layer 2 VSNs
January 2017 Troubleshooting 285
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