Troubleshooting Mld Snooping; Layer 2 Multicast Forwarding Cannot Function; Ipv6 Multicast Group Policy Does Not Work - HPE FlexNetwork 5130 EI Series Configuration Manual

Troubleshooting MLD snooping

Layer 2 multicast forwarding cannot function

Symptom
Layer 2 multicast forwarding cannot function through MLD snooping.
Solution
To resolve the problem:
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 Hewlett Packard Enterprise Support.

IPv6 multicast group policy does not work

Symptom
Hosts can receive multicast data from IPv6 multicast groups that are not permitted by the IPv6
multicast group policy.
Solution
To resolve the problem:
1. Use the display acl ipv6 command to verify that the configured IPv6 ACL meets the IPv6
multicast group policy requirements.
2. Use the display this command in MLD-snooping view or in interface view to verify that the
correct IPv6 multicast group policy has been applied. If not, use the group-policy or
mld-snooping group-policy command to apply the correct IPv6 multicast group policy.
3. Use the display mld-snooping command to verify that the feature of dropping unknown IPv6
multicast data is enabled. If not, use the mld-snooping drop-unknown command to enable
dropping unknown IPv6 multicast data.
4. If the problem persists, contact Hewlett Packard Enterprise Support.
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