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restrict the host from joining IPv6 multicast group G, the ACL must be modified to allow IPv6
multicast group G to receive report messages.
Membership information is inconsistent on the routers on the
same subnet
Symptom
The MLD routers on the same subnet have different membership information.
Analysis
•
A router running MLD maintains multiple parameters for each interface, and these parameters
influence one another, forming very complicated relationships. Inconsistent MLD interface
parameter configurations for routers on the same subnet will surely result in inconsistent MLD
memberships.
•
Two MLD versions are available. Although routers running different MLD versions are compatible
with hosts, all routers on the same subnet must run the same MLD version. Inconsistent MLD versions
running on routers on the same subnet will also lead to inconsistent MLD memberships.
Solution
1.
Use the
display current-configuration
command to verify the MLD configuration information on the
interface.
2.
Use the
display mld interface
command on all routers on the same subnet to check the MLD timers
for inconsistent configurations.
3.
Use the
display mld interface
command to verify that the routers are running the same MLD
version.
