Ip Mroute - Allied Telesis x510-28GTX Command Reference Manual

M C
ULTICAST OMMANDS

IP MROUTE

ip mroute
Overview Use this command to inform multicast of the RPF (Reverse Path Forwarding) route
to a given IPv4 multicast source.
Use the no variant of this command to delete a route to an IPv4 multicast source.
Syntax ip mroute <ipv4-source-address/mask-length>
[bgp|ospf|rip|static] <rpf-address> [<admin-distance>]
no ip mroute <ipv4-source-address/mask-length>
[bgp|ospf|rip|static]
Mode Global Configuration
Usage Typically, when a Layer 3 multicast routing protocol is determining the RPF
(Reverse Path Forwarding) interface for the path to an IPv4 multicast source, it uses
the unicast route table to find the best path to the source. However, in some
networks a deliberate choice is made to send multicast via different paths to those
used for unicast. In this case, the interface via which a multicast stream from a
given source enters a router may not be the same as the interface that connects to
the best unicast route to that source.
This command enables the user to statically configure the device with "multicast
routes" back to given sources. When performing the RPF check on a stream from a
given IPv4 source, the multicast routing protocol will look at these static entries as
well as looking into the unicast routing table. The route with the lowest
C613-50170-01 Rev B
Parameter
<ipv4-source-
address/mask-length>
ospf
rip
static
<rpf-address>
<admin-distance>
Command Reference for x510 Series
AlliedWare Plus™ Operating System - Version 5.4.7-1.x
Description
A multicast source IPv4 address and mask length, in
dotted decimal notation in the format A.B.C.D/M.
OSPF unicast routing protocol.
RIP unicast routing protocol.
Specifies a static route.
A.B.C.D
The closest known address on the multicast route back
to the specified source. This host IPv4 address can be
within a directly connected subnet or within a remote
subnet. In the case that the address is in a remote
subnet, a lookup is done from the unicast route table to
find the next hop address on the path to this host.
The administrative distance. Use this to determine
whether the RPF lookup selects the unicast or multicast
route. Lower distances have preference. If the multicast
static route has the same distance as the other RPF
sources, the multicast static route takes precedence.
The default is 0 and the range available is 0-255.
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