Operation Manual – Multicast Protocol
H3C S3610&S5510 Series Ethernet Switches
Chapter 8 Multicast Routing and Forwarding
Configuration
8-7
z
The maximum number of routing entries in a multicast forwarding table
8.3.2 Enabling IP Multicast Routing
Before configuring any Layer 3 multicast functionality, you must enable IP multicast
routing.
Follow these steps to enable IP multicast routing:
To do...
Use the command...
Remarks
Enter system view
system-view
—
Enable IP multicast
routing
multicast
routing-enable
Required
Disable by default
Caution:
IP multicast does not support the use of secondary IP address segments. Namely,
multicast can be routed and forwarded only through primary IP addresses, rather than
secondary addresses, even if configured on interfaces.
For details about primary and secondary IP addresses, refer to
IP Addressing and
Performance Configuration
.
8.3.3 Configuring Multicast Static Routes
Based on the application environment, a multicast static route has the following two
functions:
z
Changing an RPF route. If the multicast topology structure is the same as the
unicast topology in a network, the delivery path of multicast traffic is the same as in
unicast. By configuring a multicast static route, you can change the RPF route so
as to create a transmission path that is different from the unicast traffic
transmission path.
z
Creating an RPF route. When a unicast route is interrupted, multicast traffic
forwarding is stopped due to lack of an RPF route. By configuring a multicast static
route, you can create an RPF route so that a multicast routing entry is created to
guide multicast traffic forwarding.
