
5.9 MulticastRouting 233
Table 5.24 The DVMRP Packet Types
Type Packet
Response. This message carries information about
routes to one or more destinations.
Request. This message is used to request information
about routes to one or more destinations.
Nonmembership report. Used to notify the routing
domain that a destination should be pruned from
the routing tree.
Nonmembership cancellation. Cancels a previous
Nonmembership Report. This cancellation is a
graft request.
just as for any distance vector protocol, and timeouts and poisoned split horizons
are used as described earlier in this chapter.
When a router ...