[c-nsp] Partitioned-MDT MP2MP with BGP-AD/mLDP in XR 4.3

[Jason Lixfeld]

Hi all,

I've been working on trying to get LSM working between a couple of A9Ks to support a SSM based IPTV application.

After ingesting a bunch of content on the subject, I think what I want is Partitioned MDT, MP2MP with BGP-AD/mLDP (PIM-free core).  I'm wondering if anyone has any links to working configuration examples for this type of MVPN or some good troubleshooting guides for this type of MVPN specifically.

The XR 4.3 configuration guide seems to provide either a broken or an incomplete example, so what I've managed to work out from it, doesn't seem to work.

By 'doesn't seem to work', I mean I have a SSM based join-group configured on a CE with a PIM adjacency to XR PE1.  XR PE1 sees the (S,G) from the CE, but the adjacent XR PE2 (config below) doesn't see it.

Thanks in advance for any pointers.

!
interface Loopback0
 ipv4 address 72.15.48.4 255.255.255.255
!
interface Loopback2022
 vrf tv
 ipv4 address 172.16.0.32 255.255.255.255
!
interface TenGigE0/0/0/15
 description Facing Source
 vrf tv
 ipv4 address 172.16.1.1 255.255.255.0
!
interface TenGigE0/0/0/0
 description Facing Core
 cdp
 mtu 9216
 ipv4 address 72.15.49.80 255.255.255.254
 carrier-delay up 0 down 0
 dampening
!
router bgp 21949
 address-family ipv4 unicast
 !
 address-family vpnv4 unicast
 !
 address-family ipv4 mvpn
 !
 neighbor-group P-MVPN
  remote-as 21949
  update-source Loopback0
  address-family vpnv4 unicast
  !
  address-family vpnv6 unicast
  !
  address-family ipv4 mvpn
  !
 neighbor 72.15.48.10
  use neighbor-group P-MVPN
 !
 vrf tv
  rd 21949:2022
  address-family ipv4 unicast
   redistribute connected route-policy SOURCE--INTERNAL-CONNECTED
   redistribute static route-policy SOURCE--INTERNAL-STATIC
  !
  address-family ipv4 mvpn
  !
 !
!
multicast-routing
 address-family ipv4
  interface TenGigE0/0/0/0
   enable
  !
  nsf
  mdt source Loopback0
  rate-per-route
  accounting per-prefix
 !
 vrf tv
  address-family ipv4
   mdt source Loopback2022
   mdt partitioned mldp ipv4 mp2mp
   rate-per-route
   interface all enable
   bgp auto-discovery mldp
   !
   accounting per-prefix
  !
 !
!
mpls ldp
 router-id Loopback0
 graceful-restart
 session protection
 log
  neighbor
  graceful-restart
  session-protection
 !
 mldp
  logging notifications
 !
 interface TenGigE0/0/0/0
 !
!
router pim
 vrf tv
  address-family ipv4
   rpf topology route-policy MLDP-TV
   interface TenGigE0/0/0/15
    enable
   !
  !
 !
!
route-policy MLDP-TV
  set core-tree mldp-partitioned-mp2mp
end-policy
!