R3166-R3206-HP High-End Firewalls Network Management Configuration Guide-6PW101

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[Firewall] multicast routing-enable
[Firewall] interface GigabitEthernet 0/1
[Firewall-GigabitEthernet0/1] igmp proxying enable
[Firewall-GigabitEthernet0/1] quit
[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 view the IGMP configuration and operation information on
an interface. 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 view the IGMP multicast group information. For example,
# Display the IGMP multicast group information on Router.
[Router] display igmp group
Total 1 IGMP Group(s).
Interface group report information of VPN-Instance: public net
GigabitEthernet0/1(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
As shown above, 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, there is no membership information of the
multicast group G 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.