Troubleshooting Mld Snooping - HP A8800 Configuration Manual

When Host A leaves the IPv6 multicast group, it sends an MLD done message to Router B. Receiving the
message, Router B removes port GigabitEthernet 3/1/4 from the member port list of the forwarding
entry for the group; however, it does not remove the group or forward the done message to Router A
because Host B is still in the group. Use the display mld-snooping group command to display information
about MLD snooping multicast groups. For example:
# Display information about MLD snooping multicast groups on Router B.
[RouterB] display mld-snooping group
Total 1 IP Group(s).
Total 1 IP Source(s).
Total 1 MAC Group(s).
Port flags: D-Dynamic port, S-Static port, C-Copy port, P-PIM port
Subvlan flags: R-Real VLAN, C-Copy VLAN
Vlan(id):100.
Total 1 IP Group(s).
Total 1 IP Source(s).
Total 1 MAC Group(s).
Router port(s):total 1 port(s).
IP group(s):the following ip group(s) match to one mac group.
IP group address:FF1E::101
(::, FF1E::101):
MAC group(s):
MAC group address:3333-0000-0101

Troubleshooting MLD snooping

Layer 2 multicast forwarding cannot function
Symptom
Layer 2 multicast forwarding cannot function.
Analysis
MLD snooping is not enabled.
Solution
1. Use the display current-configuration command to view the running status of MLD snooping.
2. If MLD snooping is not enabled, use the mld-snooping command to enable MLD snooping globally,
and then use the mld-snooping enable command to enable MLD snooping in VLAN view.
3. If MLD snooping is disabled only for the corresponding VLAN, use the mld-snooping enable
command in VLAN view to enable MLD snooping in the corresponding VLAN.
GE3/1/1
Host port(s):total 1 port(s).
GE3/1/3
Host port(s):total 1 port(s).
GE3/1/3
(D) ( 00:01:23 )
(D)
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