R3721-F3210-F3171-HP High-End Firewalls Network Management Configuration Guide-6PW101

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[Firewall] interface gigabitethernet 0/2
[Firewall-GigabitEthernet0/2] igmp enable
[Firewall-GigabitEthernet0/2] quit
3. Verify the configuration:
Use the display igmp interface command to display IGMP configuration and operation
information on the interface of the firewalls. For example,
# Display the IGMP configuration and operation information on GigabitEthernet 0/1 of Firewall.
[Firewall] display igmp interface gigabitethernet 0/1 verbose
GigabitEthernet0/1(192.168.1.2):
IGMP proxy is enabled
Current IGMP version is 2
Multicast routing on this interface: enabled
Require-router-alert: disabled
Version1-querier-present-timer-expiry: 00:00:20
Use the display igmp group command to display IGMP group information. For example,
# Display the IGMP group information on Router.
[Router] display igmp group
Total 1 IGMP Group(s).
Ethernet1/1(192.168.1.1):
Total 1 IGMP Groups reported
Group Address Last Reporter Uptime Expires
224.1.1.1 192.168.1.2 00:02:04 00:01:15
The output shows that IGMP reports from the hosts are forwarded to Router through the proxy
interface, GigabitEthernet 0/1 of Firewall.
Troubleshooting IGMP
No membership information on the receiver-side router
Symptom
When a host sends a report for joining multicast group G, no membership information of the multicast
group G exists on the router closest to that host.
Analysis
• The correctness of networking and interface connections and whether the protocol layer of the
interface is up directly affect the generation of group membership information.
• Multicast routing must be enabled on the router, and IGMP must be enabled on the interface
connecting to the host.
• If the IGMP version on the router interface is lower than that on the host, the router will not be able
to recognize the IGMP report from the host.
• If the igmp group-policy command has been configured on the interface, the interface cannot
receive report messages that fail to pass filtering.
Solution
1. Use the display igmp interface command to verify that the networking, interface connection, and
IP address configuration are correct. If no information is output, the interface is in abnormal state.