Step 1
|
enable
|
Enables privileged EXEC mode.
|
Step 2
|
configure
terminal
Device# configure terminal
|
Enters global configuration mode.
|
Step 3
|
interface
type
number
Device(config)# interface gigabitethernet 0/0/0
|
Enters interface configuration mode.
|
Step 4
|
ip
igmp
unidirectional-link
Device(config-if)# ip igmp unidirectional-link
|
Configures IGMP on the interface to be unidirectional for IGMP UDLR.
|
Step 5
|
exit
|
Exits interface configuration mode and returns to global configuration mode.
|
Step 6
|
interface
type
number
Device(config)# interface gigabitethernet 1/0/0
|
Enters interface configuration mode.
|
Step 7
|
ip
igmp
mroute-proxy
type
number
Device(config-if)# ip igmp mroute-proxy loopback 0
|
Enables IGMP report forwarding of proxied (*, G) multicast static route (mroute) entries.
-
This step is performed to enable the forwarding of IGMP reports to a proxy service interface for all (*, G) forwarding entries
in the multicast forwarding table.
-
In this example, the
ip
igmp
mroute-proxy command is configured on Gigabit Ethernet interface 1/0/0 to request that IGMP reports be sent to loopback interface 0 for
all groups in the mroute table that are forwarded to Gigabit Ethernet interface 1/0/0.
|
Step 8
|
exit
|
Exits interface configuration mode and returns to global configuration mode.
|
Step 9
|
interface
type
number
Device(config)# interface loopback 0
|
Enters interface configuration mode for the specified interface.
|
Step 10
|
ip
igmp
helper-address
udl
interface-type
interface-number
Device(config-if)# ip igmp helper-address udl gigabitethernet 0/0/0
|
Configures IGMP helpering for UDLR.
-
This step allows the downstream device to helper IGMP reports received from hosts to an upstream device connected to a UDL
associated with the interface specified for the interface-type and interface-number arguments.
-
In the example topology, IGMP helpering is configured over loopback interface 0 on the downstream device. Loopback interface
0, thus, is configured to helper IGMP reports from hosts to an upstream device connected to Gigabit Ethernet interface 0/0/0.
|
Step 11
|
ip
igmp
proxy-service
Device(config-if)# ip igmp proxy-service
|
Enables the mroute proxy service.
-
When the mroute proxy service is enabled, the device periodically checks the static mroute table for (*, G) forwarding entries
that match interfaces configured with the ip
igmp
mroute-proxy command (see Step 7) based on the IGMP query interval. Where there is a match, one IGMP report is created and received on
this interface.
Note
|
The ip
igmp
proxy-service command is intended to be used with the ip
igmp
helper-address (UDL) command.
|
|
Step 12
|
end
|
Ends the current configuration session and returns to privileged EXEC mode.
|
Step 13
|
show
ip
igmp
interface
Device# show ip igmp interface
|
(Optional) Displays multicast-related information about an interface.
|
Step 14
|
show
ip
igmp
udlr
Device# show ip igmp udlr
|
(Optional) Displays UDLR information for directly connected multicast groups on interfaces that have a UDL helper address
configured.
|