Configuration Guide User guide

FastIron Configuration Guide 1593
53-1002494-02
Configuring a static multicast route
Syntax: show disabled-multicast-to-cpu [<vlan-id>]
For <vlan-id>, enter a valid VLAN ID. Note that each VLAN must have at least one port added to it.
Configuring a static multicast route
Static multicast routes allow you to control the network path used by multicast traffic. Static
multicast routes are especially useful when the unicast and multicast topologies of a network are
different. You can avoid the need to make the topologies similar by instead configuring static
multicast routes.
NOTE
This feature is not supported for DVMRP.
You can configure more than one static multicast route. The Layer 3 switch always uses the most
specific route that matches a multicast source address. Thus, if you want to configure a multicast
static route for a specific multicast source and also configure another multicast static route for all
other sources, you can configure two static routes as shown in the examples below.
To add static routes to multicast router A (refer to Figure 181), enter commands such as the
following.
PIMRouterA(config)#ip mroute 1 207.95.10.0 255.255.255.0 interface ethernet 1/2
distance 1
PIMRouterA(config)#ip mroute 2 0.0.0.0 0.0.0.0 interface ethernet 2/3 distance 1
PIMRouterA(config)#write memory
Syntax: mroute <route-num> <ip-addr> interface ethernet [<slotnum>/]<portnum> | ve <num>
[distance <num>]
or
Syntax: mroute <route-num> <ip-addr> rpf_address <rpf-num>
The <route-num> parameter specifies the route number.
The <ip-addr> command specifies the PIM source for the route.
NOTE
In IP multicasting, a route is handled in terms of its source, rather than its destination.
You can use the ethernet [<slotnum>/]<portnum> parameter to specify a physical port or the ve
<num> parameter to specify a virtual interface.
NOTE
The ethernet [<slotnum>/]<portnum> parameter does not apply to PIM SM.
The distance <num> parameter sets the administrative distance for the route. When comparing
multiple paths for a route, the Layer 3 switch prefers the path with the lower administrative
distance.
NOTE
Regardless of the administrative distances, the Layer 3 switch always prefers directly connected
routes over other routes.
The rpf_address <rpf-num> parameter specifies an RPF number.