Multimedia Traffic Control with IP Multicast (IGMP)

How IGMP Operates

Configuring Per-Port Forced Fast-Leave IGMP

In the factory-default configuration, Forced Fast-Leave is disabled for all ports on the switch. To enable (or disable) this feature on individual ports, use the switch’s setmib command, as shown below.

Configuring Per-Port Forced Fast-Leave IGMP on Ports. This procedure enables or disables Forced Fast-Leave on ports in a given VLAN. (See the “Note on VLAN Numbers” on page 4-19.)

Syntax:

setmib hpSwitchIgmpPortForcedLeaveState.< vlan number >< .port number > -i < 1 2 >

- OR -

setmib 1.3.6.1.4.1.11.2.14.11.5.1.7.1.15.3.1.5.< vlan number >< .port number > -i < 1 2 >

where:

1= Forced Fast-Leave enabled

2= Forced Fast-Leave disabled

For example, suppose that your switch has a six-port gigabit module in slot A, and port C1 is a member of the default VLAN. In this case, the port number is “49” (In the MIB, slot A = ports 1-24; slot B = ports 25-48; slot C = ports 49-72, and so on.) To enable Forced Fast-Leave on C6 (53), you would execute the following command and see the indicated result:

Verifies Forced Fast-Leave enabled.

49 indicates port C1.

1 indicates the default VLAN. (See the note on page 4-19.)

Figure 4-6. Example of Changing the Forced Fast-Leave Configuration on Port 49

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