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Enterasys Xpedition User Reference Manual 223

Monitoring IGMP & DVMRP

To prevent the XP 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 XP 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

XP then sends and receives multicast packets over the tunnel. Tunnels are CPU-intensive;

they are not switched directly through the XP’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 XP 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 XP.

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

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Cabletron Systems SSIM-R8-02 Spécifications Page 243