Troubleshooting Mld; No Member Information Exists On The Receiver-Side Router - HP MSR2003 Configuration Manual

<RouterB> system-view
[RouterB] ipv6 multicast routing
[RouterB-mrib6] quit
# Enable MLD proxying on GigabitEthernet 2/1/1.
[RouterB] interface gigabitethernet 2/1/1
[RouterB-GigabitEthernet2/1/1] mld proxy enable
[RouterB-GigabitEthernet2/1/1] quit
# Enable MLD on GigabitEthernet 2/1/2.
[RouterB] interface gigabitethernet 2/1/2
[RouterB-GigabitEthernet2/1/2] mld enable
[RouterB-GigabitEthernet2/1/2] quit
Verifying the configuration
# On Router B, display IPv6 multicast group membership information maintained by the MLD proxy.
[RouterB] display mld proxy group
MLD proxy group records in total: 1
GigabitEthernet2/1/1(FE80::16:1):
MLD proxy group records in total: 1
Group address: FF1E::1
Member state: Delay
Expires: 00:00:02

Troubleshooting MLD

No member information exists on the receiver-side router

Symptom
When a host sends a message to announce that it is joining IPv6 multicast group G, no member
information of multicast group G exists on the immediate router.
Analysis
The correctness of networking and interface connections and whether the protocol layer of the
•
interface is up directly affect the generation of IPv6 group member information.
IPv6 multicast routing must be enabled on the router. MLD must be enabled on the interface
•
connecting to the host.
If the MLD version on the router interface is lower than that on the host, the router cannot recognize
•
the MLD report from the host.
• If the mld group-policy command has been configured on an interface, the interface cannot receive
report messages that fail to pass filtering.
Solution
1. Use the display mld interface command to verify that the networking, interface connections, and IP
address configuration are correct. If the command does not produce output, the interface is in an
abnormal state. The reason might be one of the following:
The shutdown command has been configured on the interface.
The interface is not correctly connected.
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