Avaya Configuring IP Multicasting and Multimedia Services Manual de usuario Pagina 122

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Configuring IP Multicasting and Multimedia Services
4-32
117355-D Rev 00
Enabling Multicast Migration Between DVMRP
and Nonmulticast Interfaces
You can enable the flow of multicast and nonmulticast packets between multicast
and nonmulticast networks by using IP traffic filters and by setting IGMP static
forwarding policies. Remember that IGMP must be configured on all DVMRP
interfaces.
Receiving Nonmulticast Traffic and Forwarding As Multicast
If you configure an appropriate IP traffic filter, a router can receive unicast or
broadcast traffic on a DVMRP configured interface. The IP traffic filter converts
the unicast and broadcast packets to multicast before forwarding the traffic on an
outbound interface running a multicast protocol.
For instructions on how to configure IP traffic filters, see Configuring Traffic
Filters and Protocol Prioritization.
Receiving and Forwarding Multicast Traffic
If the multicast traffic is received on a DVMRP interface, then DVMRP can
forward the packets on either:
An outbound interface configured with a multicast protocol, such as DVMRP,
based on the multicast protocol routing table and any enabled policies.
A nonmulticast, IGMP static configured outbound interface. To send multicast
packets out on a nonmulticast interface, you must set the IGMP static
forwarding policy to “dynamic to static” mode for that interface.
If the multicast traffic is received on a nonmulticast, static configured interface,
set the IGMP static forwarding policy to “static to dynamic” mode and specify the
static incoming interface to receive the traffic. You will also need to configure a
DVMRP unicast accept policy with the appropriate network address information
to inject into the DVMRP routing table.
To configure an IGMP static forwarding policy, see “Configuring IGMP Static
Forwarding Policies” on page 3-33.
To configure a DVMRP unicast accept policy, see “Configuring DVMRP Unicast
Accept Route Policies” on page 4-69.
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