Riverstone Networks WICT1-12 - Manual (Page 470)

19-6 Riverstone Networks RS Switch Router User Guide Release 8.0
Monitoring IGMP & DVMRP Multicast Routing Configuration
To prevent the RS from forwarding any data destined to a scoped group on an interface, enter the following command
in the Configure mode:
19.4.6 Configuring a DVMRP Tunnel
The RS 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 RS then sends and receives multicast packets over
the tunnel. Tunnels are CPU-intensive; they are not switched directly through the RS’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 RS 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:
19.5 MONITORING IGMP & DVMRP
You can monitor IGMP and DVMRP information on the RS.
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
Shows all IGMP group memberships on a port basis.
igmp show memberships
Show all IGMP timers. igmp show timers