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Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, v5.3.1 9-51
Configuring IP Routing
One copy of the packet is sent to the VLAN.To configure
interfaces for multicast forwarding select Internet Group
Management Protocol (IGMP) for the multicast protocol.
* Note: Interfaces configured for IGMP forwarding will not be
able to participate in multicast sessions distributed
through DVMRP Routing.
■ Multicast Routing - allows a switch to deliver multicast
traffic between neighboring routers and across the network
using Distance Vector Multicast Routing Protocol
(DVMRP).To configure interfaces for multicast routing select
DVMRP for multicast protocol on all interfaces that are part
of a multicast network.Since IGMP is required on all
interfaces that have multicast clients, IGMP is enabled
automatically on all interfaces configured for DVMRP.
* Note: You must globally enable IP multicast routing in order to
successfully configure IGMP or DVMRP. Refer to
"Routing Function," earlier in this chapter, for
instructions on enabling IP multicast routing.
Configuring IGMP
IGMP enables hosts to inform routers when they join or leave
groups. Routers periodically query hosts (query interval) for the
groups in which the hosts are members. When there is more than
one router in a broadcast domain (subnet), one of the routers
becomes the designated querier. Only the designated router queries
the hosts.
Both IGMP Version 1.0 and IGMP Version 2.0 are supported. After
selecting the specific IGMP version for an interface, you can
manually configure the Version 1.0 querier. The selection of the
querier for Version 2.0 is dynamic but can be overridden.
Configuring IGMP includes enabling IGMP and the MTRACE
globally on the switch. You can do this from either the Web Agent
or the CLI.
* Note: You also have to enable multicast forwarding from the
Routing > IP > Configuration > Global