Configure IP routing and forwarding Multicast Routes parameters
Digi TransPort WR Routers User Guide 393
Multicast Routes parameters
Digi TransPort routers support multicast routes, allowing them to route packets to multicast group
addresses. Up to 20 different static multicast routes may be configured.
Use static multicast routes in conjunction with the IGMP parameter on the outbound interface. For
example, after configuring a static multicast route for multicast traffic via PPP 1, the IGMP
parameter in Configuration > Network > Interfaces > IGMP must be set to On. Multicast routing is
configured using a table with the following parameters.
Multicast Address a.b.c.d
Specified with the Mask parameter below, to identify the destination multicast group address
for packets that will match this route. Therefore, if a router receives a packet with a destination
multicast group address that matches the specified Multicast Address/Mask combination, it
routes that packet through the interface specified by the Interface parameters below.
Mask a.b.c.d
The address mask specified with the Multicast Address parameter as described above.
Interface x,y
These two parameters in the drop-down list and adjacent text box specify the interface and
interface instance for routing packets matching the Multicast Address/Mask combination. The
options available in the drop-down list are; PPP, Ethernet, Tunnel.
Enable multicast source path checking
If enabled, the router checks the source address of any multicast packets received to determine
whether the packet has arrived from the most direct path. The router performs this check by
doing a route look-up on the source address, and comparing the lookup results with the
interface on which the packet arrived. If the interfaces are the same, the router accepts this
multicast packet. Otherwise, the router drops the packet, as the packet is likely to be a copy, and
the router has already received the original.
Add button
Adds the multicast route to the IP configuration.
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