H3C Technologies H3C WX3000E Series Wireless Switches User Manual
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Configuring IGMP snooping fast-leave processing on a port
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Layer 2 Ethernet
interface view, Layer 2
aggregate interface view, or
port group view.
•
Enter Layer 2 Ethernet interface view or
Layer 2 aggregate interface view:
interface interface-type
interface-number
•
Enter port group view:
port-group manual port-group-name
Use either approach.
3.
Enable IGMP snooping
fast-leave processing.
igmp-snooping fast-leave [ vlan vlan-list ]
Disabled by default.
Disabling a port from becoming a dynamic router port
The following problems might exist in a multicast access network:
•
After receiving an IGMP general query or a PIM hello message from a connected host, a router port
becomes a dynamic router port. Before its timer expires, this dynamic router port receives all
multicast packets within the VLAN that the port belongs to, and forwards them to the host, affecting
normal multicast reception of the host.
•
In addition, the IGMP general query or PIM hello message that the host sends affects the multicast
routing protocol state on Layer 3 devices, such as the IGMP querier or DR election, and might
further cause network interruption.
To solve these problems, you can disable that router port from becoming a dynamic router port after the
port receives an IGMP general query or a PIM hello message, so as to enhance network security and the
control over multicast users.
To disable a port from becoming a dynamic router port:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Layer 2 Ethernet
interface view, Layer 2
aggregate interface view, or
port group view.
•
Enter Layer 2 Ethernet interface
view or Layer 2 aggregate
interface view:
interface interface-type
interface-number
•
Enter port group view:
port-group manual
port-group-name
Use either approach.
3.
Disable the port from
becoming a dynamic router
port.
igmp-snooping router-port-deny
[ vlan vlan-list ]
By default, a port can become a
dynamic router port.
NOTE:
This configuration does not affect the static router port configuration.