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DES-7200 Configuration Guide Chapter 1 IPv4 Multicast
Configuration
1-7
Note
To set the egress of the static multicast route not to the next hop IP address,
the egress must be a point-to-point type interface.
1.3.5 Configuring the Flow Control of Multicast Steams on Layer 2
To enable flow control on an interface, execute this command. More than one
command, or a port that is allowed to forward can be configured for a multicast
stream. Once enabled, the multicast stream can only be forwarded through these
ports.
Command Purpose
DES-7200 (config) # ip multicast static
source-address group-address
interface-type interface-number
Enable flow control on the interface. The
static egress must be a layer 2 interface
This command controls only the forwarding of multicast streams on an interface,
without direct influence on the multicast protocol’s processing packets. However,
as some features of some multicast protocol (for example, PIM-DM or PIM-SM)
are driven by multicast streams, this may influence the activities of multicast
protocols.
1.3.6 Configuring Longest-match Multicast Routing
According to the RPF rule, the multicast static routing, MBGP routing and unicast
routing used for the RPF check can be selected from the multicast static routing
list, MBGP routing list and unicast routing list.
By default, select the routing with the highest priority from these three routings. If
the priority values are the same, the routing will be selected in the sequence of
multicast static routing, MBGP routing and unicast routing.
Use the following command to configure and select the longest-match routing
from the three routings. If the priority values are the same, the routing will be
selected in the sequence of multicast static routing, MBGP routing and unicast
routing.
Command Purpose
DES-7200(config)# ip multicast rpf
longest-match
According to the RPF rule, the
multicast static routing, MBGP routing
and unicast routing used for the
RPF
check can be selected from the
multicast static routing list, MBGP
routing list and unicast routing list.
Select the longest-match
routing from
the three routings. If the priority values
are the same, the routing will be
selected in the sequence of multicast
static routing, MBGP routing and
unicast routing.
1.3.7 Monitoring and Maintenance of Multicast Routing
Execute the following command in the privileged configuration mode to show the
IPv4 multicast forwarding table: