C
HAPTER
21
| Multicast Routing
Configuring Global Settings for Multicast Routing
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CONFIGURING GLOBAL SETTINGS FOR MULTICAST ROUTING
To use multicast routing on this router, first globally enable multicast
routing as described in this section, then specify the interfaces that will
employ multicast routing protocols (PIM-DM or PIM-SM on page 548). Note
that only one IPv4 multicast routing protocol (PIM-DM or PIM-SM) can be
enabled on any given interface.
ENABLING MULTICAST
ROUTING GLOBALLY
Use the Multicast > Multicast Routing > General page to enable IP
multicast routing globally on the switch.
CLI REFERENCES
â—† "ip multicast-routing" on page 1085
PARAMETERS
These parameters are displayed in the web interface:
◆ Multicast Forwarding Status – Enables IP multicast routing.
(Default: Disabled)
WEB INTERFACE
To enable multicast routing:
1. Click Multicast, Multicast Routing, General.
2. Enable Multicast Forwarding Status.
3. Click Apply.
Figure 361: Enabling Multicast Routing
DISPLAYING THE
MULTICAST ROUTING
TABLE
Use the Multicast > Multicast Routing > Information page to display
information on each multicast route it has learned through PIM. The router
learns multicast routes from neighboring routers, and also advertises these
routes to its neighbors. The router stores entries for all paths learned by
itself or from other routers, without considering actual group membership
or prune messages. The routing table therefore does not indicate that the
router has processed multicast traffic from any particular source listed in
the table. It uses these routes to forward multicast traffic only if group
members appear on directly-attached subnetworks or on subnetworks
attached to downstream routers.
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