H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 46)

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GE1/0/1 (D) ( 00:01:23 )
IP group(s):the following ip group(s) match to one mac group.
IP group address:224.1.1.1
(0.0.0.0, 224.1.1.1):
Host port(s):total 1 port(s).
WLAN-DBSS1:0 (D)
MAC group(s):
MAC group address:0100-5e01-0101
Host port(s):total 1 port(s).
WLAN-DBSS1:0
Troubleshooting IGMP snooping
Layer 2 multicast forwarding cannot function
Symptom
Layer 2 multicast forwarding cannot function.
Analysis
IGMP snooping is not enabled.
Solution
1. Use the display current-configuration command to view the running status of IGMP snooping.
2. If IGMP snooping is not enabled, use the igmp-snooping command to enable IGMP snooping
globally, and then use the igmp-snooping enable command to enable IGMP snooping in VLAN
view.
3. If IGMP snooping is disabled only for the corresponding VLAN, use the igmp-snooping enable
command in VLAN view to enable IGMP snooping in the corresponding VLAN.
Configured multicast group policy fails to take effect
Symptom
Although a multicast group policy has been configured to allow hosts to join specific multicast groups, the
hosts can still receive multicast data addressed to other multicast groups.
Analysis
• The ACL rule is incorrectly configured.
• The multicast group policy is not correctly applied.
• The function of dropping unknown multicast data is not enabled, so unknown multicast data is
flooded.
• Certain ports have been configured as static member ports of a multicasts group, and this
configuration conflicts with the configured multicast group policy.
Solution
1. Use the display acl command to check the configured ACL rule. Make sure that the ACL rule
conforms to the multicast group policy to be implemented.