Enterasys Networks 1H582-xx User Manual
Process Overview: Routing Protocol Configuration
Configuring DVMRP
13-63
13.1.3 Configuring DVMRP
Purpose
To enable and configure the Distance Vector 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.
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.
Commands
The commands needed to enable and configure DVMRP are listed below and described in the
associated section as shown:
associated section as shown:
•
ip dvmrp (
)
•
ip dvmrp metric (
•
show ip dvmrp route (
•
show ip mroute (
13.1.3.1 ip dvmrp
Use this command to enable or disable DVMRP on an interface.
ip dvmrp
Syntax Description
None.
Command Syntax of the “no” Form
The “no” form of this command disables DVMRP:
no ip dvmrp
Command Type
Router command.