ADTRAN AOS Version R10.1.0 Command Reference Manual page 1821

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 this feature.
Syntax Description
No subcommands.
Default Values
By default, this command is disabled.
Command History
Release 7.1
Release A4.01
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 Internet Group Management Protocol (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 downstream on page 1818
Usage Examples
The following example enables multicast forwarding on the MEF Ethernet interface:
(config)#interface mef-ethernet 0/1
(config-mef-ethernet 0/1)#ip mcast-stub upstream
60000CRG0-35E
Command was introduced.
Command was expanded to include the Metro Ethernet Forum (MEF)
Ethernet interface.
ip mcast-stub helper-address <ip address> on page 1042
for more information.
Copyright © 2012 ADTRAN, Inc.
MEF Ethernet Interface
and
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