Dvmrp Terminology; Dvmrp - ZyXEL Communications MS-7206 - EDITION 1 Manual

Chapter 35 DVMRP
The final multicast ("M") after pruning and grafting is shown in the next figure.
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Figure 117 How DVMRP Works

35.2.1 DVMRP Terminology

DVMRP probes are used to discover other DVMRP Neighbors on a network.
DVMRP reports are used to exchange DVMRP source routing information. These
packets are used to build the DVMRP multicast routing table that is used to build
source trees and also perform Reverse Path Forwarding (RPF) checks on incoming
multicast packets. RPF checks prevent duplicate packets being filtered when loops
exist in the network topology.
DVMRP prunes trim the multicast delivery tree(s). DVMRP grafts attach a branch
back onto the multicast delivery tree.

35.3 DVMRP

Use this screen to configure DVMRP on the switch when you wish it to act as a
multicast router ("mrouter"). To open this screen, click IP Application > DVMRP.
Figure 118 DVMRP
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