Enabling Proxy downstream interface
Enable IGMP mroute proxy on the interface in which the interface is in the direction contrary to the root of the multicast forwarding tree. In this example eth2 is the downstream interface which is connected to receiver.
#configure terminal | Enter Configure mode. |
(config)#interface eth2 | Enter Interface mode |
(config-if)#ip address 192.168.10.57/24 | Assign IP address to an interface |
(config-if)#ip igmp mroute-proxy eth1 | Enable IGMP mroute proxy on the downstream interface and specify the upstream proxy interface name. |
(config-if)#commit | Commit the transaction. |
(config)#exit | Exit Configure mode. |
Validation
Here is the same configuration for IGMP Proxying router.
hostname Router1
!
interface lo
!!
ip multicast-routing
!
interface eth0
!
interface eth1
ip address 192.168.1.57/24
no shutdown
ip igmp proxy-service
!
interface eth2
ip address 192.168.10.57/24
no shutdown
ip igmp mroute-proxy eth1
!
IGMP proxy interface
The following output displays the IGMP Proxy interface information.
Router1#show ip igmp interface
Interface eth1 (Index 3)
IGMP Enabled, Active, Version 3 (default), proxy-service
IGMP host version 3
Internet address is 192.168.1.57
Unsolicited Report Interval is 1000 milliseconds
Interface eth2 (Index 4)
IGMP Enabled, Active, Querier, Version 3 (default)
IGMP mroute-proxy interface is eth1
Internet address is 192.168.10.57
IGMP interface has 1 group-record states
IGMP Interface statistics:
v1-reports: 0
v2-reports: 1, v2-leaves: 0
v3-reports: 0
IGMP query interval is 125 seconds
IGMP Startup query interval is 31 seconds
IGMP Startup query count is 2
IGMP querier timeout is 255 seconds
IGMP max query response time is 10 seconds
Group Membership interval is 260 seconds
IGMP Last member query count is 2
Last member query response interval is 1000 milliseconds
IGMP proxy
The following output displays the IGMP proxy information.
Router1#show ip igmp proxy
Interface eth2 (Index 4)
Administrative status: enabled
Operational status: up
Upstream interface is eth1
Number of multicast groups: 1
IGMP proxy groups
The following output displays the IGMP proxy group membership information.
Router1#show ip igmp proxy groups
IGMP Connected Proxy Group Membership
Group Address Interface State Member state
224.0.1.3 eth1 Active Delay
IP Multicast Routing Table
The show ip mroute command displays the IP multicast routing table.
Router1#show ip mroute
IP Multicast Routing Table
Flags: I - Immediate Stat, T - Timed Stat, F - Forwarder installed
B - BIDIR
Timers: Uptime/Stat Expiry
Interface State: Interface (TTL)
(172.31.1.52, 224.0.1.3), uptime 00:00:05
Owner IGMP-Proxy-Service, Flags: F
Incoming interface: eth1
Outgoing interface list:
eth2 (1)
Last modified date: 08/29/2023