Configuring Dvmrp - Enterasys Matrix 2G4072-52 Configuration Manual

Routing Protocol Configuration Command Set

Configuring DVMRP

13.2.4 Configuring DVMRP
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. To do this, use the set
igmp enable command as described in
IGMP querying be enabled on all VLANs running DVMRP. To do this, use the set igmp
query-enable command as described in
Commands
The commands used to enable and configure DVMRP are listed below and described in the
associated section as shown:
•
ip dvmrp (Section
•
ip dvmrp metric
•
show ip dvmrp route
13-76 Matrix DFE-Platinum and Diamond Series Configuration Guide
13.2.4.1)
(Section 13.2.4.2)
(Section 13.2.4.3)
Section 10.4.1.2. It is also recommended that
Section 10.4.2.2.