|
Command or Action |
Purpose |
|
enable
Example:
Device> enable
|
Enables privileged EXEC mode.
-
Enter your password if prompted.
|
|
configure terminal
Example:
Device# configure terminal
|
Enters global configuration mode. |
|
interface type number
Example:
Device(config)# interface gigabitethernet 0/0/0
|
Enters interface configuration mode.
-
For the type and number arguments, specify the interface to be used as the UDL on the downstream device for IGMP UDLR.
|
|
ip igmp unidirectional-link
Example:
Device(config-if)# ip igmp unidirectional-link
|
Configures IGMP on the interface to be unidirectional for IGMP UDLR. |
|
exit
Example:
Device(config-if)# exit
|
Exits interface configuration mode and returns to global configuration mode. |
|
interface type number
Example:
Device(config)# interface gigabitethernet 1/0/0
|
Enters interface configuration mode.
-
For the type and number arguments, select an interface that is facing the nondirectly connected hosts.
|
|
ip igmp mroute-proxy type number
Example:
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.
|
|
exit
Example:
Device(config-if)# exit
|
Exits interface configuration mode and returns to global configuration mode. |
|
interface type number
Example:
Device(config)# interface loopback 0
|
Enters interface configuration mode for the specified interface.
-
In this example, loopback interface 0 is specified.
|
|
ip igmp helper-address udl interface-type interface-number
Example:
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.
|
|
ip igmp proxy-service
Example:
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. |
-
In this example, the ip igmp proxy-service command is configured on loopback interface 0 to enable the forwarding of IGMP reports out the interface for all groups on interfaces registered through the ip igmp mroute-proxy command (see Step 7).
|
|
end
Example:
Device(config-if)# end
|
Ends the current configuration session and returns to privileged EXEC mode. |
|
show ip igmp interface
Example:
Device# show ip igmp interface
|
(Optional) Displays multicast-related information about an interface. |
|
show ip igmp udlr
Example:
Device# show ip igmp udlr
|
(Optional) Displays UDLR information for directly connected multicast groups on interfaces that have a UDL helper address configured. |