Chapter 10: Troubleshooting Igmp; Unknown Igmp Multicast Packets Flooding A Network; Checking Igmp Configuration For A Vlan; Viewing The Igmp Unknown Multicast Flooding Status - Avaya Virtual Services Platform 7000 Series Troubleshooting Manual

Chapter 10: Troubleshooting IGMP

This chapter provides processes you can use to troubleshoot common Internet Group Management
Protocol (IGMP) problems.
For detailed information about configuring IGMP, see Avaya Virtual Services Platform 7000 Series
Configuration Layer 2 (NN47202-502).

Unknown IGMP multicast packets flooding a network

This section describes the troubleshooting process you can use to resolve the problematic
flooding of a network with unknown IGMP multicast packets.

Checking IGMP configuration for a VLAN

Use this procedure to view and analyze the IGMP configuration for a specific VLAN.
Procedure
1. Use the show vlan igmp {1–4094} command to display IGMP configuration
2. Observe and analyze the command output.

Viewing the IGMP unknown multicast flooding status

Use this procedure to view and analyze the status of the switch configuration for flooding
VLANs with IGMP unknown multicast packets.
Procedure
1. Use the show vlan igmp unknown-mcast-no-flood command to display
VSP 7000 Troubleshooting
information for the VLAN.
whether the switch functionality for flooding all VLANs with unknown IGMP multicast
addresses is enabled or disabled.
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