Enterasys Networks 9034313-07 manual Configuring Dvmrp, Enabling Dvmrp on an Interface

Models: 9034313-07

1 872
Download 872 pages 24.54 Kb
Page 603
Image 603

Configuring DVMRP

Configuring DVMRP

* Advanced License Required *

DVMRP is an advanced routing feature that must be enabled with a license key. If you have purchased an advanced license key, and have enabled routing on the device, you must activate your license as described in the chapter entitled “Activating Licensed Features” in order to enable the DVMRP command set. If you wish to purchase an advanced routing license, contact Enterasys Networks Sales.

Note: An Enterasys Networks Feature Guide document containing an in-depth discussion of multicast configuration is located on the Enterasys Networks web site:

http://www.enterasys.com/support/manuals/

Purpose

To enable and configure the Distance Vector Multicast Routing Protocol (DVMRP) on an interface. DVMRP routes multicast traffic using a technique known as Reverse Path Forwarding. When a router receives a packet, it floods the packet out of all paths except the one that leads back to the packet’s source. Doing so allows a data stream to reach all VLANs (possibly multiple times). If a router is attached to a set of VLANs that do not want to receive from a particular multicast group, the router can send a “prune” message back up the distribution tree to stop subsequent packets from traveling where there are no members. DVMRP will periodically reflood in order to reach any new hosts that want to receive from a particular group.

Note: IGMP must be enabled on all VLANs running DVMRP, and must also be globally enabled on the SecureStack C3. For details on enabling IGMP, refer to Chapter 13.

Commands

For information about...

Refer to page...

 

 

ip dvmrp

20-34

 

 

ip dvmrp enable

20-34

 

 

ip dvmrp metric

20-35

 

 

show ip dvmrp

20-35

 

 

See also show ip mroute on page 20‐59, which can be used to display the IP multicast routing table.

Enabling DVMRP on an Interface

DVMRP is disabled by default, both globally and on each interface. Enabling DVMRP on a routed interface requires completing the steps listed in Table 20‐1.

SecureStack C3 Configuration Guide 20-33

Page 603
Image 603
Enterasys Networks 9034313-07 manual Configuring Dvmrp, Enabling Dvmrp on an Interface