D-Link DI-1750 Reference Manual page 315

Command
clear ip mroute pim-dm {* |
group [source]}
clear ip pim-dm interface
Take the first command for an example.：
input clearCommand，prompt is as below:
(00)arp-cache
......
(05)ip
......
Please Input the code of command to be excute(0-15): 5
input 5，Select ip option ，prompt is as below:
(00)beigrp
......
(04)mroute
......
Please Input the code of command to be excute(0-7): 4
input 4，Select mroute option ，prompt is as below:
(00)pim-dm Clear PIM-DM MRT
Please Input the code of command to be excute(0-0): 0
input 0，Select pim-dm option ，prompt is as below:
(00)*
(01)A.B.C.D
Please Input the code of command to be excute(0-1): 0
input 0，confirm it.
g
7.3.7 Confi ure multicast static route
Multicast static route allows multicast forwarding route differing from unicast route. RPF examination is
processed when any multicast message is forwarded: The factual receiving port of the message is the
one expected. (This port is the next hop of the unicast route of arriving at the sender.) Such
examination is reasonable when unicast topology is the same with multicast topology. But in some
cases we still wish the unicast route differ from multicast route.
A usual example is using tunnel technique. If a router on a route doesn't support multicast group
protocol, the solution is configuring GRE tunnel between the two routers. In the following figure, each
unicast router (UR) only supports unicast message and each multicast router (MR) supports multicast
message. The source sends multicast messages to destination through MR1 and MR2. MR2 will
forward a multicast message only when this message is received from tunnel. In this case, unicast
messages from destination to source will also pass the tunnel. As we know, It is more slowly of sending
messages on tunnel than sending directly.
Clear (S,G) item in local MRT. This operation
will delete all or part of the items in local
multicast routing table and maybe affect normal
multicast forwarding. This command can only
delete (S,G) items created by PIM-DM multicast
routing protocol on upward ports.
Reset
forwarded by (S,G) on PIM-DM port. This
command can only reset (S,G) items created by
PIM-DM multicast routing protocol on upward
ports.
Clear the entire ARP cache
IP
Clear BEIGRP
Delete multicast route table entries
Delete all multicast routes
IP group address
Model Name
Purpose
the multicast message
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statistics