Configuring Per-Port Igmp Traffic Filters; Configuring The Querier Function - HP 2920 Series Multicast And Routing Manual

You can also combine the ip igmp command with other IGMP-related commands, as described
in the following sections.

Configuring per-port IGMP traffic filters

Syntax:
vlan <vid> ip igmp [ auto <port-list> | blocked <port-list>
| forward <port-list> ]
Used in the VLAN context, specifies how each port should handle IGMP traffic.
Default: auto.
NOTE:
created by this command applies to the same port, the IGMP filter overrides the
static multicast filter for any inbound multicast traffic carrying the same multicast
address as is configured in the static filter. See section "Filter Types and Operation"
in the "Port Traffic Controls" chapter of the Management and Configuration Guide
for your switch.
Example:
Suppose you want to configure IGMP as follows for VLAN 1 on the 100/1000T
ports on a module in slot 1:
Ports 1-2
Ports 3-4
Ports 5-6
For a description of the default behavior of data-driven switches, see
fast-leave IGMP" (page
Depending on the privilege level, you could use one of the following commands to
configure IGMP on VLAN 1 with the above settings:
HP Switch(config)# vlan 1 ip igmp auto 1,2 forward 3,4
blocked 5,6
HP Switch(vlan-1)# ip igmp auto 1,2 forward 3,4
blocked 5,6
The following command displays the VLAN and per-port configuration resulting
from the above commands.
HP Switch> show igmp vlan 1 config

Configuring the querier function

Syntax:
[no] vlan <vid> ip igmp querier
This command disables or re-enables the ability for the switch to become querier
if necessary.
The no version of the command disables the querier function on the switch. The
show ip igmp config command displays the current querier command.
Default querier capability: Enabled
Where a static multicast filter is configured on a port, and an IGMP filter
auto Filter multicast traffic. Forward IGMP traffic to hosts on these ports that
belong to the multicast group for which the traffic is intended. (Also
forward any multicast traffic through any of these ports that is connected
to a multicast router.)
forward Forward all multicast traffic through this port.
blocked Drop all multicast traffic received from devices on these ports.
15).
"Automatic
Configuring and displaying IGMP (CLI) 13