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Multimedia Traffic Control with IP Multicast (IGMP)
IGMP Operating Features
IGMP Configuration
for the Selected
VLAN
IGMP Configuration
On the Individual
Ports in the VLAN
Figure 12-2. Example Listing of IGMP Configuration for A Specific VLAN
Enabling or Disabling IGMP on a VLAN. You can enable IGMP on a
VLAN, along with the last-saved or default IGMP configuration (whichever
was most recently set), or you can disable IGMP on a selected VLAN. Note
that this command must be executed in a VLAN context.
Syntax: [no] ip igmp
For example, here are methods to enable and disable IGMP on the default
VLAN (VID = 1).
HPswitch(config)# vlan 1 ip igmp Enables IGMP on VLAN 1.
HPswitch(vlan-1)# ip igmp Same as above.
HPswitch(config)# no vlan 1 ip igmp Disables IGMP on VLAN 1.
Not e If you disable IGMP on a VLAN and then later re-enable IGMP on that VLAN,
the switch restores the last-saved IGMP configuration for that VLAN. For more
on how switch memory operates, see
Chapter 5, “Switch Memory and Config-
uration”.
You can also combine the ip igmp command with other IGMP-related com-
mands, as described in the following sections.
12-7