UDLR IGMP Proxy.md

Integrated UDLR Tunnel IGMP UDLR and IGMP Proxy Example

• The following example shows how to configure UDLR tunnels, IGMP UDLR, and IGMP proxy on both the upstream and downstream routers sharing a UDL.
• References: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_igmp/configuration/15-sy/imc-igmp-15-sy-book/imc_cfg_ovr_unidirct.html

Topology

Configuration Example

Upstream Router

ip multicast-routing
!
! user network
!
interface GigabitEthernet2/1/0
 ip address 12.0.0.1 255.255.255.0
 no ip directed-broadcast
 ip pim dense-mode
 ip cgmp
 fair-queue 64 256 128
 no cdp enable
 ip rsvp bandwidth 1000 100
!
! Backchannel
!
interface GigabitEthernet2/2/0
 ip address 11.0.0.1 255.255.255.0
 no ip directed-broadcast
 no cdp enable
 ! this interface can ping 13.0.0.2
!
! physical send-only interface
!
interface GigabitEthernet2/3/0
 ip address 10.0.0.1 255.255.255.240
 no ip directed-broadcast
 ip pim dense-mode
 ip nhrp network-id 5
 ip nhrp server-only
 ip igmp unidirectional-link
 fair-queue 64 256 31
 ip rsvp bandwidth 1000 100
!
! tunnel interface
!
interface Tunnel0
 ip address 1.1.1.11 255.255.255.255
 no ip directed-broadcast
 tunnel source 1.1.1.11
 tunnel mode gre multipoint
 tunnel key 5
 tunnel udlr receive-only GigabitEthernet2/3/0
!
! to downstream loopback interface
!
ip route 2.2.2.2 255.255.255.255 10.0.0.2
!
! to downstream tunnel interface
!
ip route 2.2.2.22 255.255.255.255 10.0.0.2
!
! to downstream user network
!
ip route 14.0.0.0 255.255.255.0 10.0.0.2
!
end

Downstream Router

ip multicast-routing
!
! user network
!
interface GigabitEthernet2/1/0
 ip address 14.0.0.2 255.255.255.0
 no ip directed-broadcast
 ip pim sparse-mode
 ip igmp mroute-proxy Loopback0
 no cdp enable
!
! Backchannel
!
interface GigabitEthernet2/2/0
 ip address 13.0.0.2 255.255.255.0
 no ip directed-broadcast
 no cdp enable
 ! this interface can ping 11.0.0.1
!
! physical receive-only interface
!
interface GigabitEthernet2/3/0
 ip address 10.0.0.2 255.255.255.0
 no ip directed-broadcast
 ip pim sparse-mode
 ip igmp unidirectional-link
 no keepalive
 no cdp enable
!
! tunnel interface
!
interface Tunnel0
 ip address 2.2.2.22 255.255.255.252
 ip access-group 120 out
 no ip directed-broadcast
 no ip mroute-cache
 tunnel source 2.2.2.22
 tunnel destination 1.1.1.11
 tunnel key 5
 tunnel udlr send-only GigabitEthernet2/3/0
 tunnel udlr address-resolution
!
! loopback interface
!
interface Loopback0
 ip address 2.2.2.2 255.255.255.255
 ip pim sparse-mode
 ip igmp helper-address udl GigabitEthernet2/3/0
 ip igmp proxy-service
!
ip route 0.0.0.0 0.0.0.0 11.0.0.1
!
! set rpf to be the physical receive-only interface
! bad next-hop address
!
ip mroute 0.0.0.0 0.0.0.0 10.0.0.0
ip pim rp-address 14.0.0.2
!
! permit ospf, ping and rsvp, deny others
!
access-list 120 permit icmp any any
access-list 120 permit 46 any any
access-list 120 permit ospf any any
!
end