Troubleshooting Mld Snooping; Layer 2 Multicast Forwarding Cannot Function; Ipv6 Multicast Group Filter Does Not Work - HP MSR2003 Configuration Manual

Troubleshooting MLD snooping

Layer 2 multicast forwarding cannot function

Symptom
Layer 2 multicast forwarding cannot function through MLD snooping.
Analysis
MLD snooping is not enabled.
Solution
1. Use the display mld-snooping command to display MLD snooping status.
2. If MLD snooping is not enabled, use the mld-snooping command in system view to enable MLD
snooping globally. Then, use the mld-snooping enable command in VLAN view to enable MLD
snooping for the VLAN.
3. If MLD snooping is enabled globally but not enabled for the VLAN, use the mld-snooping enable
command in VLAN view to enable MLD snooping for the VLAN.
4. If the problem persists, contact HP Support.

IPv6 multicast group filter does not work

Symptom
Hosts can receive multicast data from IPv6 multicast groups that are not permitted by the IPv6 multicast
group filter.
Analysis
The IPv6 ACL is incorrectly configured.
•
• The IPv6 multicast group filter is not correctly applied.
The function of dropping unknown IPv6 multicast data is not enabled, so unknown IPv6 multicast
•
data is flooded.
Solution
1. Use the display acl ipv6 command to verify that the configured IPv6 ACL meets the IPv6 multicast
group filter requirements.
2. Use the display this command in MLD-snooping view or in a corresponding interface view to verify
that the correct IPv6 multicast group filter has been applied. If not, use the group-policy or
mld-snooping group-policy command to apply the correct IPv6 multicast group filter.
3. Use the display mld-snooping command to verify that the function of dropping unknown IPv6
multicast data is enabled. If not, use the drop-unknown or mld-snooping drop-unknown command
to enable dropping unknown IPv6 multicast data.
4. If the problem persists, contact HP Support.
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