Network Router User Manual

SmartSwitch Router User Reference Manual 203
Chapter 14: Multicast Routing Configuration Guide
To prevent the SSR from forwarding any data destined to a scoped group on an interface,
enter the following command in the Configure mode:
Configuring a DVMRP Tunnel
The SSR supports DVMRP tunnels to the MBONE (the multicast backbone of the
Internet). You can configure a DVMRP tunnel on a router if the other end is running
DVMRP. The SSR then sends and receives multicast packets over the tunnel. Tunnels are
CPU-intensive; they are not switched directly through the SSR’s multitasking ASICs.
DVMRP tunnels need to be created before being enabled. Tunnels are recognized by the
tunnel name. Once a DVMRP tunnel is created, you can enable DVMRP on the interface.
The SSR supports a maximum of eight tunnels.
To configure a DVMRP tunnel, enter the following command in Configure mode:
You can also control the rate of DVMRP traffic in a DVMRP tunnel. The default rate is 500
Kbps.
To control the rate of DVMRP traffic, enter the following command in Configure mode:
Monitoring IGMP & DVMRP
You can monitor IGMP and DVMRP information on the SSR.
To display IGMP and DVMRP information, enter the following commands in the Enable
mode.
Configure the DVMRP scope.
dvmrp set interface <ip-addr> scope
<ip-addr/mask>
Configure a DVMRP tunnel to MBONE. dvmrp create tunnel <string> local
<ip-addr>
remote
<ip-addr>
Configure the rate in a DVMRP tunnel.
dvmrp set interface <ip-addr>
rate
<number>
Show all interfaces running
DVMRP. Also shows the neighbors
on each interface.
dvmrp show interface
Display DVMRP routing table.
dvmrp show routes
Shows all the interfaces and
membership details running IGMP.
igmp show interface