Configure IGMP snooping Router Port

IGMP snooping router port is the port receiving IGMP group query packets or multicast routing protocol packets. When the device receives the IGMP member report or leave packet, forward the packet via IGMP snooping router port. In this way, the upper-connected router can maintain the IGMP member relation table correctly.

IGMP snooping router port can be dynamically learned or configured manually. IGMP snooping dynamic router port refreshes the age time by regularly receiving the IGMP group query packets or multicast routing protocol packets. IGMP snooping static router port does not age.

Configuration Condition

Before configuring the IGMP snooping router port functions, first complete the following tasks:

• Enable global and VLAN IGMP snooping function
• Add port member in VLAN

Configure IGMP snooping Static Router Port

After configuring IGMP snooping static router port, the device can forward the IGMP protocol packet via the port even the port does not receive the IGMP group query packet or multicast routing protocol packet. It can prevent the problem that the router port ages because the services of the upper-connected L3 multicast device are interrupted.

Table 2-11 Configure IGMP snooping static router port

Configure Age Time of IGMP snooping Dynamic Router Port

If the configured age time of the IGMP snooping dynamic router port is longer, it can prevent the problem that the router port of the upper-connected L3 multicast device is aged fast because of the service interruption.

Table 2-12 Configure age time of IGMP snooping dynamic router port