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Command Reference Guide
ip mcast-stub upstream
Use the ip mcast-stub upstream command to enable multicast forwarding on an interface and place it in
multicast stub upstream mode. Use the no form of this command to disable.
Syntax Description
No subcommands.
Default Values
By default, this command is disabled.
Applicable Platforms
This command applies to the NetVanta 1000R, 3000, 4000, and 5000 Series units.
Command History
Release 7.1
Release 11.1
Functional Notes
This command is used in IP multicast stub applications in conjunction with the ip mcast-stub
helper-address and ip mcast-stub downstream commands. When enabled, the interface becomes a
candidate to be a helper forwarding interface. If chosen as the best path toward the helper address by the
router's unicast route table, the IGMP host function is dynamically enabled and the interface becomes the
active upstream interface, enabling the router to perform as an IGMP proxy. Though multiple interfaces
may be candidates, no more than one interface will actively serve as the helper forwarding interface. Refer
to
ip mcast-stub helper-address <ip address>
more information.
Usage Examples
The following example enables multicast forwarding on the interface:
(config)#interface demand 1
(config-demand 1)#ip mcast-stub upstream
61200990L1-35E
Command was introduced.
Command expanded to include the demand interface.
on page 387
Copyright © 2005 ADTRAN
Demand Interface Configuration Command Set
and
ip mcast-stub downstream
on page 661
for
663
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