# IOS XR mVPN Profile 14 {% hint style="info" %} Make sure your software version supports mVPN Profile 14. {% endhint %} ## Topology ![](https://1719571082-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LRR-eFgjBzBSfUKcev7%2F-MS94HvIAwKrjA237Szr%2F-MS9B1XnYs_ZCF2U_tfu%2Fmvpn-topology.png?alt=media\&token=6c4a49d2-0f0a-46cf-8ff4-f646ad01f28b) 1. C-RP is configured on PE2: `21.21.21.21`. All other router have C-RP statically defined. ## Configuration mVPN configuration is identical for all PEs. {% hint style="info" %} Only mVPN relevant configuration is listed below. {% endhint %} {% hint style="info" %} RP configuration is required for ASM case only. {% endhint %} {% tabs %} {% tab title="Egress PE1" %} ``` hostname PE1 ! vrf A vpn id 1:1 address-family ipv4 unicast import route-target 1:1 ! export route-target 1:1 ! ! ! interface Loopback0 ipv4 address 1.1.1.1 255.255.255.255 ! interface GigabitEthernet0/0/0/0 description to GigabitEthernet0/0.CE1 vrf A ipv4 address 192.168.1.1 255.255.255.0 ! interface GigabitEthernet0/0/0/1 description to GigabitEthernet0/0/0/1.P ipv4 address 10.0.101.1 255.255.255.0 ! route-policy PASS pass end-policy ! route-policy mVPN-Profile-14 set core-tree mldp-partitioned-p2mp end-policy ! router ospf 1 router-id 1.1.1.1 area 0 mpls ldp auto-config interface Loopback0 passive enable ! interface GigabitEthernet0/0/0/1 network point-to-point ! ! ! router bgp 1 bgp router-id 1.1.1.1 address-family vpnv4 unicast ! address-family ipv4 mvpn ! neighbor 2.2.2.2 remote-as 1 update-source Loopback0 address-family vpnv4 unicast ! address-family ipv4 mvpn ! ! neighbor 3.3.3.3 remote-as 1 update-source Loopback0 address-family vpnv4 unicast ! address-family ipv4 mvpn ! ! vrf A rd auto address-family ipv4 unicast redistribute connected ! address-family ipv4 mvpn ! neighbor 192.168.1.2 remote-as 2 address-family ipv4 unicast route-policy PASS in route-policy PASS out as-override ! ! ! ! mpls ldp mldp address-family ipv4 ! ! router-id 1.1.1.1 ! multicast-routing address-family ipv4 interface Loopback0 enable ! ! vrf A address-family ipv4 mdt source Loopback0 rate-per-route interface all enable accounting per-prefix bgp auto-discovery mldp ! mdt partitioned mldp ipv4 p2mp mdt data 100 ! ! ! router pim vrf A address-family ipv4 rpf topology route-policy mVPN-Profile-14 mdt c-multicast-routing bgp ! rp-address 21.21.21.21 interface GigabitEthernet0/0/0/0 enable ! ! ! ! end ``` {% endtab %} {% tab title="Ingress PE2" %} ``` hostname PE2 ! vrf A vpn id 1:1 address-family ipv4 unicast import route-target 1:1 ! export route-target 1:1 ! ! ! interface Loopback0 ipv4 address 2.2.2.2 255.255.255.255 ! interface Loopback100 description VRF-A RP vrf A ipv4 address 21.21.21.21 255.255.255.255 ! interface GigabitEthernet0/0/0/0 description to GigabitEthernet0/0.CE2 vrf A ipv4 address 192.168.2.1 255.255.255.0 ! interface GigabitEthernet0/0/0/2 description to GigabitEthernet0/0/0/2.P ipv4 address 10.0.102.2 255.255.255.0 ! route-policy PASS pass end-policy ! route-policy mVPN-Profile-14 set core-tree mldp-partitioned-p2mp end-policy ! router ospf 1 router-id 2.2.2.2 area 0 mpls ldp auto-config interface Loopback0 passive enable ! interface GigabitEthernet0/0/0/2 network point-to-point ! ! ! router bgp 1 bgp router-id 2.2.2.2 address-family vpnv4 unicast ! address-family ipv4 mvpn ! neighbor 1.1.1.1 remote-as 1 update-source Loopback0 address-family vpnv4 unicast ! address-family ipv4 mvpn ! ! neighbor 3.3.3.3 remote-as 1 update-source Loopback0 address-family vpnv4 unicast ! address-family ipv4 mvpn ! ! vrf A rd auto address-family ipv4 unicast redistribute connected ! address-family ipv4 mvpn ! neighbor 192.168.2.2 remote-as 2 address-family ipv4 unicast route-policy PASS in route-policy PASS out as-override ! ! ! ! mpls ldp mldp address-family ipv4 ! ! router-id 2.2.2.2 ! multicast-routing address-family ipv4 interface Loopback0 enable ! ! vrf A address-family ipv4 mdt source Loopback0 rate-per-route interface all enable accounting per-prefix bgp auto-discovery mldp ! mdt partitioned mldp ipv4 p2mp mdt data 100 ! ! ! router pim vrf A address-family ipv4 rpf topology route-policy mVPN-Profile-14 mdt c-multicast-routing bgp ! rp-address 21.21.21.21 interface GigabitEthernet0/0/0/0 enable ! ! ! ! end ``` {% endtab %} {% tab title="Egress PE3" %} ``` hostname PE3 ! vrf A vpn id 1:1 address-family ipv4 unicast import route-target 1:1 ! export route-target 1:1 ! ! ! interface Loopback0 ipv4 address 3.3.3.3 255.255.255.255 ! interface GigabitEthernet0/0/0/0 description to GigabitEthernet0/0.CE3 vrf A ipv4 address 192.168.3.1 255.255.255.0 ! interface GigabitEthernet0/0/0/3 description to GigabitEthernet0/0/0/3.P ipv4 address 10.0.103.3 255.255.255.0 ! route-policy PASS pass end-policy ! route-policy mVPN-Profile-14 set core-tree mldp-partitioned-p2mp end-policy ! router ospf 1 router-id 3.3.3.3 area 0 mpls ldp auto-config interface Loopback0 passive enable ! interface GigabitEthernet0/0/0/3 network point-to-point ! ! ! router bgp 1 bgp router-id 3.3.3.3 address-family vpnv4 unicast ! address-family ipv4 mvpn ! neighbor 1.1.1.1 remote-as 1 update-source Loopback0 address-family vpnv4 unicast ! address-family ipv4 mvpn ! ! neighbor 2.2.2.2 remote-as 1 update-source Loopback0 address-family vpnv4 unicast ! address-family ipv4 mvpn ! ! vrf A rd auto address-family ipv4 unicast redistribute connected ! address-family ipv4 mvpn ! neighbor 192.168.3.2 remote-as 2 address-family ipv4 unicast route-policy PASS in route-policy PASS out as-override ! ! ! ! mpls ldp mldp address-family ipv4 ! ! router-id 3.3.3.3 ! multicast-routing address-family ipv4 interface Loopback0 enable ! ! vrf A address-family ipv4 mdt source Loopback0 rate-per-route interface all enable accounting per-prefix bgp auto-discovery mldp ! mdt partitioned mldp ipv4 p2mp mdt data 100 ! ! ! router pim vrf A address-family ipv4 rpf topology route-policy mVPN-Profile-14 mdt c-multicast-routing bgp ! rp-address 21.21.21.21 interface GigabitEthernet0/0/0/0 enable ! ! ! ! end ``` {% endtab %} {% tab title="P" %} ``` hostname P ! interface Loopback0 ipv4 address 10.10.10.10 255.255.255.255 ! interface GigabitEthernet0/0/0/1 description to GigabitEthernet0/0/0/1.PE1 ipv4 address 10.0.101.10 255.255.255.0 ! interface GigabitEthernet0/0/0/2 description to GigabitEthernet0/0/0/2.PE2 ipv4 address 10.0.102.10 255.255.255.0 ! interface GigabitEthernet0/0/0/3 description to GigabitEthernet0/0/0/3.PE3 ipv4 address 10.0.103.10 255.255.255.0 ! router ospf 1 router-id 10.10.10.10 area 0 mpls ldp auto-config interface Loopback0 passive enable ! interface GigabitEthernet0/0/0/1 network point-to-point ! interface GigabitEthernet0/0/0/2 network point-to-point ! interface GigabitEthernet0/0/0/3 network point-to-point ! ! ! mpls ldp mldp address-family ipv4 ! ! router-id 10.10.10.10 ! end ``` {% endtab %} {% endtabs %} {% tabs %} {% tab title="Receiver/CE1" %} ``` hostname CE1 ! interface Loopback0 ip address 192.168.0.1 255.255.255.255 ip pim sparse-mode ip igmp join-group 232.1.1.1 source 192.168.2.2 ip igmp version 3 ! interface Loopback1 ip address 192.168.101.1 255.255.255.255 ip pim sparse-mode ip igmp join-group 239.1.1.2 ! interface GigabitEthernet0/0 description to GigabitEthernet0/0/0/0.PE1 ip address 192.168.1.2 255.255.255.0 ip pim sparse-mode ! router bgp 2 bgp log-neighbor-changes neighbor 192.168.1.1 remote-as 1 ! address-family ipv4 redistribute connected neighbor 192.168.1.1 activate exit-address-family ! ip pim rp-address 21.21.21.21 ip pim ssm range 1 ! access-list 1 permit 232.0.0.0 0.255.255.255 ! end ``` {% endtab %} {% tab title="Source/CE2" %} ``` hostname CE2 ! interface GigabitEthernet0/0 description to GigabitEthernet0/0/0/0.PE2 ip address 192.168.2.2 255.255.255.0 ip pim sparse-mode duplex auto speed auto media-type rj45 ! router bgp 2 bgp log-neighbor-changes neighbor 192.168.2.1 remote-as 1 ! address-family ipv4 neighbor 192.168.2.1 activate exit-address-family ! ip pim rp-address 21.21.21.21 ! end ``` {% endtab %} {% tab title="Receiver/CE3" %} ``` hostname CE3 ! interface Loopback0 ip address 192.168.0.3 255.255.255.255 ip pim sparse-mode ip igmp join-group 232.1.1.1 source 192.168.2.2 ip igmp version 3 ! interface Loopback1 ip address 192.168.101.3 255.255.255.255 ip pim sparse-mode ip igmp join-group 239.1.1.2 ! interface GigabitEthernet0/0 description to GigabitEthernet0/0/0/0.PE3 ip address 192.168.3.2 255.255.255.0 ip pim sparse-mode ! router bgp 2 bgp log-neighbor-changes neighbor 192.168.3.1 remote-as 1 ! address-family ipv4 redistribute connected neighbor 192.168.3.1 activate exit-address-family ! ip pim rp-address 21.21.21.21 ip pim ssm range 1 ! access-list 1 permit 232.0.0.0 0.255.255.255 ! end ``` {% endtab %} {% endtabs %} ## How to start the multicast streams ### SSM stream {% tabs %} {% tab title="CE2" %} ```applescript CE2#ping 232.1.1.1 source 192.168.2.2 repeat 20 Type escape sequence to abort. Sending 20, 100-byte ICMP Echos to 232.1.1.1, timeout is 2 seconds: Packet sent with a source address of 192.168.2.2 . Reply to request 1 from 192.168.0.1, 52 ms Reply to request 1 from 192.168.0.3, 52 ms Reply to request 2 from 192.168.0.1, 12 ms Reply to request 2 from 192.168.0.3, 12 ms Reply to request 3 from 192.168.0.3, 12 ms Reply to request 3 from 192.168.0.1, 13 ms ``` {% endtab %} {% endtabs %} ### ASM stream {% tabs %} {% tab title="CE2" %} ```applescript CE2#ping 239.1.1.2 repeat 3 Type escape sequence to abort. Sending 3, 100-byte ICMP Echos to 239.1.1.2, timeout is 2 seconds: Reply to request 0 from 192.168.101.1, 10 ms Reply to request 0 from 192.168.101.3, 10 ms Reply to request 1 from 192.168.101.3, 10 ms Reply to request 1 from 192.168.101.1, 10 ms Reply to request 2 from 192.168.101.3, 14 ms Reply to request 2 from 192.168.101.1, 14 ms ``` {% endtab %} {% endtabs %} ## PE-CE used SSM In short it means that first hop routers (CE1 and CE3) receive IGMPv3 join where both source address and multicast group are specified. mVPN involves routes Type 1, 3 and 7 in this case. **Route types** | Type | Name | Type | Definition | | ------ | ------------------------- | ----------- | ---------- | | Type 1 | Intra-AS I-PMSI A-D route | AD | | | Type 2 | Inter-AS I-PMSI A-D route | AD | | | Type 3 | S-PMSI A-D route | AD | | | Type 4 | Leaf A-D route | AD | | | Type 5 | Source Active A-D route | AD | | | Type 6 | Shared Tree Join route | C-multicast | | | Type 7 | Source Tree Join route | C-multicast | | ### 1. No receivers, no active sources All PEs are announcing Type 1 and Type 3. ```applescript RP/0/0/CPU0:PE1#sh bgp vrf A ipv4 mvpn Fri Jan 29 10:16:00.261 UTC BGP VRF A, state: Active BGP Route Distinguisher: 1.1.1.1:0 VRF ID: 0x60000001 BGP router identifier 1.1.1.1, local AS number 1 Non-stop routing is enabled BGP table state: Active Table ID: 0x0 RD version: 23 BGP main routing table version 23 BGP NSR Initial initsync version 8 (Reached) BGP NSR/ISSU Sync-Group versions 0/0 Status codes: s suppressed, d damped, h history, * valid, > best i - internal, r RIB-failure, S stale, N Nexthop-discard Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path Route Distinguisher: 1.1.1.1:0 (default for vrf A) *> [1][1.1.1.1]/40 0.0.0.0 0 i *>i[1][2.2.2.2]/40 2.2.2.2 100 0 i *>i[1][3.3.3.3]/40 3.3.3.3 100 0 i *> [3][0][0.0.0.0][0][0.0.0.0][1.1.1.1]/120 0.0.0.0 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][2.2.2.2]/120 2.2.2.2 100 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][3.3.3.3]/120 3.3.3.3 100 0 i Processed 6 prefixes, 6 paths ``` ```applescript RP/0/0/CPU0:PE1#sh bgp vrf A ipv4 mvpn [1][3.3.3.3]/40 detail Mon Feb 1 08:19:15.073 UTC BGP routing table entry for [1][3.3.3.3]/40, Route Distinguisher: 1.1.1.1:0 Versions: Process bRIB/RIB SendTblVer Speaker 14 14 Flags: 0x00001001+0x00000000; Last Modified: Jan 29 20:33:50.450 for 2d11h Paths: (1 available, best #1, not advertised to EBGP peer) Not advertised to any peer Path #1: Received by speaker 0 Flags: 0x4000000005060005, import: 0x80 Not advertised to any peer Local 3.3.3.3 (metric 3) from 3.3.3.3 (3.3.3.3) Origin IGP, localpref 100, valid, internal, best, group-best, import-candidate, imported Received Path ID 0, Local Path ID 0, version 14 Community: no-export Extended community: RT:1:1 Source AFI: IPv4 MVPN, Source VRF: default, Source Route Distinguisher: 3.3.3.3:0 ``` ```applescript RP/0/0/CPU0:PE1#sh bgp vrf A ipv4 mvpn [3][0][0.0.0.0][0][0.0.0.0][2.2.2.2]/12$ Mon Feb 1 08:20:26.588 UTC BGP routing table entry for [3][0][0.0.0.0][0][0.0.0.0][2.2.2.2]/120, Route Distinguisher: 1.1.1.1:0 Versions: Process bRIB/RIB SendTblVer Speaker 8 8 Flags: 0x00001001+0x00000000; Last Modified: Jan 29 20:33:50.450 for 2d11h Paths: (1 available, best #1, not advertised to EBGP peer) Not advertised to any peer Path #1: Received by speaker 0 Flags: 0x4000000005060005, import: 0x80 Not advertised to any peer Local 2.2.2.2 (metric 3) from 2.2.2.2 (2.2.2.2) Origin IGP, localpref 100, valid, internal, best, group-best, import-candidate, imported Received Path ID 0, Local Path ID 0, version 8 Community: no-export Extended community: RT:1:1 PMSI: flags 0x00, type 2, label 0, ID 0x0600010402020202000701000400000001 PPMP: label 24000 Source AFI: IPv4 MVPN, Source VRF: default, Source Route Distinguisher: 2.2.2.2:0 ``` ### 2. Active receiver, no active sources When egress PEs receive PIM Join (C-S, C-G) they generate Type 7 to express the presence of receiver behind. As you can see from PE2 output (ingress PE) it gets Type 7 routes from both egress PEs. #### IGMP state on CE routers {% tabs %} {% tab title="CE1" %} ```applescript CE1#sh ip igmp membership 232.1.1.1 Flags: A - aggregate, T - tracked L - Local, S - static, V - virtual, R - Reported through v3 I - v3lite, U - Urd, M - SSM (S,G) channel 1,2,3 - The version of IGMP, the group is in Channel/Group-Flags: / - Filtering entry (Exclude mode (S,G), Include mode (G)) Reporter: - last reporter if group is not explicitly tracked / - reporter in include mode, reporter in exclude Channel/Group Reporter Uptime Exp. Flags Interface /*,232.1.1.1 192.168.0.1 04:57:52 stop 3LMA Lo0 192.168.2.2,232.1.1.1 04:57:52 02:57 A Lo0 ``` {% endtab %} {% tab title="CE3" %} ```applescript CE3#sh ip igmp membership 232.1.1.1 Flags: A - aggregate, T - tracked L - Local, S - static, V - virtual, R - Reported through v3 I - v3lite, U - Urd, M - SSM (S,G) channel 1,2,3 - The version of IGMP, the group is in Channel/Group-Flags: / - Filtering entry (Exclude mode (S,G), Include mode (G)) Reporter: - last reporter if group is not explicitly tracked / - reporter in include mode, reporter in exclude Channel/Group Reporter Uptime Exp. Flags Interface /*,232.1.1.1 192.168.0.3 04:58:29 stop 3LMA Lo0 192.168.2.2,232.1.1.1 04:58:29 02:16 A Lo0 ``` {% endtab %} {% endtabs %} #### PIM state on PE routers PE1 and PE3 have received PIM Joins from respective CE routers. {% tabs %} {% tab title="PE1" %} ```applescript RP/0/0/CPU0:PE1#sh pim vrf A topology 232.1.1.1 Fri Jan 29 13:55:41.748 UTC IP PIM Multicast Topology Table Entry state: (*/S,G)[RPT/SPT] Protocol Uptime Info Entry flags: KAT - Keep Alive Timer, AA - Assume Alive, PA - Probe Alive RA - Really Alive, IA - Inherit Alive, LH - Last Hop DSS - Don't Signal Sources, RR - Register Received SR - Sending Registers, SNR - Sending Null Registers E - MSDP External, EX - Extranet MFA - Mofrr Active, MFP - Mofrr Primary, MFB - Mofrr Backup DCC - Don't Check Connected, ME - MDT Encap, MD - MDT Decap MT - Crossed Data MDT threshold, MA - Data MDT Assigned SAJ - BGP Source Active Joined, SAR - BGP Source Active Received, SAS - BGP Source Active Sent, IM - Inband mLDP, X - VxLAN Interface state: Name, Uptime, Fwd, Info Interface flags: LI - Local Interest, LD - Local Dissinterest, II - Internal Interest, ID - Internal Dissinterest, LH - Last Hop, AS - Assert, AB - Admin Boundary, EX - Extranet, BGP - BGP C-Multicast Join, BP - BGP Source Active Prune, MVS - MVPN Safi Learned, MV6S - MVPN IPv6 Safi Learned (192.168.2.2,232.1.1.1)SPT SSM Up: 00:16:32 JP: Join(BGP) RPF: LmdtA,2.2.2.2 Flags: GigabitEthernet0/0/0/0 00:16:32 fwd Join(00:02:55) ``` {% endtab %} {% tab title="PE2" %} ```applescript RP/0/0/CPU0:PE2#sh pim vrf A topology 232.1.1.1 Fri Jan 29 13:56:09.387 UTC IP PIM Multicast Topology Table Entry state: (*/S,G)[RPT/SPT] Protocol Uptime Info Entry flags: KAT - Keep Alive Timer, AA - Assume Alive, PA - Probe Alive RA - Really Alive, IA - Inherit Alive, LH - Last Hop DSS - Don't Signal Sources, RR - Register Received SR - Sending Registers, SNR - Sending Null Registers E - MSDP External, EX - Extranet MFA - Mofrr Active, MFP - Mofrr Primary, MFB - Mofrr Backup DCC - Don't Check Connected, ME - MDT Encap, MD - MDT Decap MT - Crossed Data MDT threshold, MA - Data MDT Assigned SAJ - BGP Source Active Joined, SAR - BGP Source Active Received, SAS - BGP Source Active Sent, IM - Inband mLDP, X - VxLAN Interface state: Name, Uptime, Fwd, Info Interface flags: LI - Local Interest, LD - Local Dissinterest, II - Internal Interest, ID - Internal Dissinterest, LH - Last Hop, AS - Assert, AB - Admin Boundary, EX - Extranet, BGP - BGP C-Multicast Join, BP - BGP Source Active Prune, MVS - MVPN Safi Learned, MV6S - MVPN IPv6 Safi Learned (192.168.2.2,232.1.1.1)SPT SSM Up: 00:17:01 JP: Join(now) RPF: GigabitEthernet0/0/0/0,192.168.2.2* Flags: LmdtA 00:17:01 fwd BGP ``` {% endtab %} {% tab title="PE3" %} ```applescript RP/0/0/CPU0:PE3#sh pim vrf A topology 232.1.1.1 Fri Jan 29 13:56:43.895 UTC IP PIM Multicast Topology Table Entry state: (*/S,G)[RPT/SPT] Protocol Uptime Info Entry flags: KAT - Keep Alive Timer, AA - Assume Alive, PA - Probe Alive RA - Really Alive, IA - Inherit Alive, LH - Last Hop DSS - Don't Signal Sources, RR - Register Received SR - Sending Registers, SNR - Sending Null Registers E - MSDP External, EX - Extranet MFA - Mofrr Active, MFP - Mofrr Primary, MFB - Mofrr Backup DCC - Don't Check Connected, ME - MDT Encap, MD - MDT Decap MT - Crossed Data MDT threshold, MA - Data MDT Assigned SAJ - BGP Source Active Joined, SAR - BGP Source Active Received, SAS - BGP Source Active Sent, IM - Inband mLDP, X - VxLAN Interface state: Name, Uptime, Fwd, Info Interface flags: LI - Local Interest, LD - Local Dissinterest, II - Internal Interest, ID - Internal Dissinterest, LH - Last Hop, AS - Assert, AB - Admin Boundary, EX - Extranet, BGP - BGP C-Multicast Join, BP - BGP Source Active Prune, MVS - MVPN Safi Learned, MV6S - MVPN IPv6 Safi Learned (192.168.2.2,232.1.1.1)SPT SSM Up: 00:17:28 JP: Join(BGP) RPF: LmdtA,2.2.2.2 Flags: GigabitEthernet0/0/0/0 00:17:28 fwd Join(00:03:07) ``` {% endtab %} {% endtabs %} #### MRIB state on PE routers {% tabs %} {% tab title="PE1" %} ``` RP/0/0/CPU0:PE1#sh mrib vrf A route 232.1.1.1 Fri Jan 29 13:40:47.140 UTC IP Multicast Routing Information Base Entry flags: L - Domain-Local Source, E - External Source to the Domain, C - Directly-Connected Check, S - Signal, IA - Inherit Accept, IF - Inherit From, D - Drop, ME - MDT Encap, EID - Encap ID, MD - MDT Decap, MT - MDT Threshold Crossed, MH - MDT interface handle CD - Conditional Decap, MPLS - MPLS Decap, EX - Extranet MoFE - MoFRR Enabled, MoFS - MoFRR State, MoFP - MoFRR Primary MoFB - MoFRR Backup, RPFID - RPF ID Set, X - VXLAN Interface flags: F - Forward, A - Accept, IC - Internal Copy, NS - Negate Signal, DP - Don't Preserve, SP - Signal Present, II - Internal Interest, ID - Internal Disinterest, LI - Local Interest, LD - Local Disinterest, DI - Decapsulation Interface EI - Encapsulation Interface, MI - MDT Interface, LVIF - MPLS Encap, EX - Extranet, A2 - Secondary Accept, MT - MDT Threshold Crossed, MA - Data MDT Assigned, LMI - mLDP MDT Interface, TMI - P2MP-TE MDT Interface IRMI - IR MDT Interface (192.168.2.2,232.1.1.1) RPF nbr: 2.2.2.2 Flags: RPF Up: 00:01:38 Incoming Interface List LmdtA Flags: A LMI, Up: 00:01:38 Outgoing Interface List GigabitEthernet0/0/0/0 Flags: F NS, Up: 00:01:38 ``` {% endtab %} {% tab title="PE2" %} ``` RP/0/0/CPU0:PE2#sh mri vrf A route 232.1.1.1 Fri Jan 29 13:40:00.343 UTC IP Multicast Routing Information Base Entry flags: L - Domain-Local Source, E - External Source to the Domain, C - Directly-Connected Check, S - Signal, IA - Inherit Accept, IF - Inherit From, D - Drop, ME - MDT Encap, EID - Encap ID, MD - MDT Decap, MT - MDT Threshold Crossed, MH - MDT interface handle CD - Conditional Decap, MPLS - MPLS Decap, EX - Extranet MoFE - MoFRR Enabled, MoFS - MoFRR State, MoFP - MoFRR Primary MoFB - MoFRR Backup, RPFID - RPF ID Set, X - VXLAN Interface flags: F - Forward, A - Accept, IC - Internal Copy, NS - Negate Signal, DP - Don't Preserve, SP - Signal Present, II - Internal Interest, ID - Internal Disinterest, LI - Local Interest, LD - Local Disinterest, DI - Decapsulation Interface EI - Encapsulation Interface, MI - MDT Interface, LVIF - MPLS Encap, EX - Extranet, A2 - Secondary Accept, MT - MDT Threshold Crossed, MA - Data MDT Assigned, LMI - mLDP MDT Interface, TMI - P2MP-TE MDT Interface IRMI - IR MDT Interface (192.168.2.2,232.1.1.1) RPF nbr: 192.168.2.2 Flags: RPF Up: 00:00:52 Incoming Interface List GigabitEthernet0/0/0/0 Flags: A, Up: 00:00:52 Outgoing Interface List LmdtA Flags: F LMI TR, Up: 00:00:52 ``` {% endtab %} {% tab title="PE3" %} ``` RP/0/0/CPU0:PE3#sh mrib vrf A route 232.1.1.1 Fri Jan 29 13:43:01.961 UTC IP Multicast Routing Information Base Entry flags: L - Domain-Local Source, E - External Source to the Domain, C - Directly-Connected Check, S - Signal, IA - Inherit Accept, IF - Inherit From, D - Drop, ME - MDT Encap, EID - Encap ID, MD - MDT Decap, MT - MDT Threshold Crossed, MH - MDT interface handle CD - Conditional Decap, MPLS - MPLS Decap, EX - Extranet MoFE - MoFRR Enabled, MoFS - MoFRR State, MoFP - MoFRR Primary MoFB - MoFRR Backup, RPFID - RPF ID Set, X - VXLAN Interface flags: F - Forward, A - Accept, IC - Internal Copy, NS - Negate Signal, DP - Don't Preserve, SP - Signal Present, II - Internal Interest, ID - Internal Disinterest, LI - Local Interest, LD - Local Disinterest, DI - Decapsulation Interface EI - Encapsulation Interface, MI - MDT Interface, LVIF - MPLS Encap, EX - Extranet, A2 - Secondary Accept, MT - MDT Threshold Crossed, MA - Data MDT Assigned, LMI - mLDP MDT Interface, TMI - P2MP-TE MDT Interface IRMI - IR MDT Interface (192.168.2.2,232.1.1.1) RPF nbr: 2.2.2.2 Flags: RPF Up: 00:03:46 Incoming Interface List LmdtA Flags: A LMI, Up: 00:03:46 Outgoing Interface List GigabitEthernet0/0/0/0 Flags: F NS, Up: 00:03:46 ``` {% endtab %} {% endtabs %} #### BGP state {% tabs %} {% tab title="PE1" %} ``` RP/0/0/CPU0:PE1#sh bgp vrf A ipv4 mvpn Fri Jan 29 10:17:27.055 UTC BGP VRF A, state: Active BGP Route Distinguisher: 1.1.1.1:0 VRF ID: 0x60000001 BGP router identifier 1.1.1.1, local AS number 1 Non-stop routing is enabled BGP table state: Active Table ID: 0x0 RD version: 24 BGP main routing table version 24 BGP NSR Initial initsync version 8 (Reached) BGP NSR/ISSU Sync-Group versions 0/0 Status codes: s suppressed, d damped, h history, * valid, > best i - internal, r RIB-failure, S stale, N Nexthop-discard Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path Route Distinguisher: 1.1.1.1:0 (default for vrf A) *> [1][1.1.1.1]/40 0.0.0.0 0 i *>i[1][2.2.2.2]/40 2.2.2.2 100 0 i *>i[1][3.3.3.3]/40 3.3.3.3 100 0 i *> [3][0][0.0.0.0][0][0.0.0.0][1.1.1.1]/120 0.0.0.0 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][2.2.2.2]/120 2.2.2.2 100 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][3.3.3.3]/120 3.3.3.3 100 0 i *> [7][2.2.2.2:0][1][32][192.168.2.2][32][232.1.1.1]/184 0.0.0.0 0 i Processed 7 prefixes, 7 paths ``` {% endtab %} {% tab title="PE2" %} ``` RP/0/0/CPU0:PE2#sh bgp vrf A ipv4 mvpn Fri Jan 29 10:18:35.241 UTC BGP VRF A, state: Active BGP Route Distinguisher: 2.2.2.2:0 VRF ID: 0x60000001 BGP router identifier 2.2.2.2, local AS number 1 Non-stop routing is enabled BGP table state: Active Table ID: 0x0 RD version: 35 BGP main routing table version 35 BGP NSR Initial initsync version 4 (Reached) BGP NSR/ISSU Sync-Group versions 0/0 Status codes: s suppressed, d damped, h history, * valid, > best i - internal, r RIB-failure, S stale, N Nexthop-discard Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path Route Distinguisher: 2.2.2.2:0 (default for vrf A) *>i[1][1.1.1.1]/40 1.1.1.1 100 0 i *> [1][2.2.2.2]/40 0.0.0.0 0 i *>i[1][3.3.3.3]/40 3.3.3.3 100 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][1.1.1.1]/120 1.1.1.1 100 0 i *> [3][0][0.0.0.0][0][0.0.0.0][2.2.2.2]/120 0.0.0.0 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][3.3.3.3]/120 3.3.3.3 100 0 i *>i[7][2.2.2.2:0][1][32][192.168.2.2][32][232.1.1.1]/184 1.1.1.1 100 0 i * i 3.3.3.3 100 0 i Processed 7 prefixes, 8 paths ``` {% endtab %} {% tab title="PE3" %} ``` RP/0/0/CPU0:PE3#sh bgp vrf A ipv4 mvpn Fri Jan 29 10:19:00.929 UTC BGP VRF A, state: Active BGP Route Distinguisher: 3.3.3.3:0 VRF ID: 0x60000001 BGP router identifier 3.3.3.3, local AS number 1 Non-stop routing is enabled BGP table state: Active Table ID: 0x0 RD version: 24 BGP main routing table version 24 BGP NSR Initial initsync version 4 (Reached) BGP NSR/ISSU Sync-Group versions 0/0 Status codes: s suppressed, d damped, h history, * valid, > best i - internal, r RIB-failure, S stale, N Nexthop-discard Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path Route Distinguisher: 3.3.3.3:0 (default for vrf A) *>i[1][1.1.1.1]/40 1.1.1.1 100 0 i *>i[1][2.2.2.2]/40 2.2.2.2 100 0 i *> [1][3.3.3.3]/40 0.0.0.0 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][1.1.1.1]/120 1.1.1.1 100 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][2.2.2.2]/120 2.2.2.2 100 0 i *> [3][0][0.0.0.0][0][0.0.0.0][3.3.3.3]/120 0.0.0.0 0 i *> [7][2.2.2.2:0][1][32][192.168.2.2][32][232.1.1.1]/184 0.0.0.0 0 i Processed 7 prefixes, 7 paths ``` {% endtab %} {% endtabs %} #### Type 7 in more details ``` RP/0/0/CPU0:PE1#sh bgp vrf A ipv4 mvpn [7][2.2.2.2:0][1][32][192.168.2.2][32][$ Fri Jan 29 14:49:13.348 UTC BGP routing table entry for [7][2.2.2.2:0][1][32][192.168.2.2][32][232.1.1.1]/184, Route Distinguisher: 1.1.1.1:0 Versions: Process bRIB/RIB SendTblVer Speaker 26 26 Last Modified: Jan 29 13:39:08.875 for 01:10:04 Paths: (1 available, best #1) Advertised to PE update-groups (with more than one peer): 0.2 Path #1: Received by speaker 0 Advertised to PE update-groups (with more than one peer): 0.2 Local 0.0.0.0 from 0.0.0.0 (1.1.1.1) Origin IGP, localpref 100, valid, redistributed, best, group-best, import-candidate Received Path ID 0, Local Path ID 0, version 26 Extended community: RT:2.2.2.2:16 ``` Let's look at IPv4 unicast route:. There's an extended community called `VRF Route Import` with the value `2.2.2.2:16`. ``` RP/0/0/CPU0:PE1#sh bgp vrf A ipv4 unicast 192.168.2.0/24 Fri Jan 29 14:50:55.851 UTC BGP routing table entry for 192.168.2.0/24, Route Distinguisher: 1.1.1.1:0 Versions: Process bRIB/RIB SendTblVer Speaker 24 24 Last Modified: Jan 29 09:47:07.875 for 05:03:48 Paths: (1 available, best #1) Advertised to CE peers (in unique update groups): 192.168.1.2 Path #1: Received by speaker 0 Advertised to CE peers (in unique update groups): 192.168.1.2 Local 2.2.2.2 (metric 3) from 2.2.2.2 (2.2.2.2) Received Label 24006 Origin incomplete, metric 0, localpref 100, valid, internal, best, group-best, import-candidate, imported Received Path ID 0, Local Path ID 0, version 24 Extended community: VRF Route Import:2.2.2.2:16 Source AS:1:0 RT:1:1 Connector: type: 1, Value:2.2.2.2:0:2.2.2.2 Source AFI: VPNv4 Unicast, Source VRF: default, Source Route Distinguisher: 2.2.2.2:0 ``` #### MLDP {% tabs %} {% tab title="PE1" %} ``` RP/0/0/CPU0:PE1#sh mpl mldp database brief Fri Jan 29 20:39:59.845 UTC LSM ID Type Root Up Down Decoded Opaque Value 0x00001 P2MP 1.1.1.1 0 1 [global-id 1] 0x00002 P2MP 2.2.2.2 1 1 [global-id 1] RP/0/0/CPU0:PE1#sh mpl mldp database Fri Jan 29 20:40:45.081 UTC mLDP database LSM-ID: 0x00001 Type: P2MP Uptime: 00:08:34 FEC Root : 1.1.1.1 (we are the root) Opaque decoded : [global-id 1] Upstream neighbor(s) : None Downstream client(s): PIM MDT Uptime: 00:08:34 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 HLI : 0x00001 Ingress : Yes PPMP : Yes Local Label : 24000 (internal) LSM-ID: 0x00002 Type: P2MP Uptime: 00:06:54 FEC Root : 2.2.2.2 Opaque decoded : [global-id 1] Upstream neighbor(s) : 10.10.10.10:0 [Active] Uptime: 00:06:54 Local Label (D) : 24006 Downstream client(s): PIM MDT Uptime: 00:06:54 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 RPF ID : 3 RD : 514:33685504 RP/0/0/CPU0:PE1#sh mpl mldp database details Fri Jan 29 20:41:41.848 UTC mLDP database LSM-ID: 0x00001 Type: P2MP Uptime: 00:09:31 FEC Root : 1.1.1.1 (we are the root) FEC Length : 12 bytes FEC Value internal : 020100040000000101010101 Opaque length : 4 bytes Opaque value : 01 0004 00000001 Opaque decoded : [global-id 1] Features : Trace Upstream neighbor(s) : None Downstream client(s): PIM MDT Uptime: 00:09:31 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 HLI : 0x00001 Ingress : Yes Peek : Yes PPMP : Yes Local Label : 24000 (internal) LSM-ID: 0x00002 Type: P2MP Uptime: 00:07:51 FEC Root : 2.2.2.2 FEC Length : 12 bytes FEC Value internal : 020100040000000102020202 Opaque length : 4 bytes Opaque value : 01 0004 00000001 Opaque decoded : [global-id 1] Features : Trace Upstream neighbor(s) : 10.10.10.10:0 [Active] Uptime: 00:07:51 Local Label (D) : 24006 Downstream client(s): PIM MDT Uptime: 00:07:51 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 RPF ID : 3 Peek : Yes RD : 514:33685504 ``` {% endtab %} {% tab title="PE2" %} ``` RP/0/0/CPU0:PE2#sh mpl mldp database brief Fri Jan 29 20:42:44.193 UTC LSM ID Type Root Up Down Decoded Opaque Value 0x00001 P2MP 2.2.2.2 0 2 [global-id 1] RP/0/0/CPU0:PE2#sh mpl mldp database Fri Jan 29 20:42:52.213 UTC mLDP database LSM-ID: 0x00001 Type: P2MP Uptime: 00:12:40 FEC Root : 2.2.2.2 (we are the root) Opaque decoded : [global-id 1] Upstream neighbor(s) : None Downstream client(s): LDP 10.10.10.10:0 Uptime: 00:09:02 Next Hop : 10.0.102.10 Interface : GigabitEthernet0/0/0/2 Remote label (D) : 24003 PIM MDT Uptime: 00:12:40 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 HLI : 0x00001 Ingress : Yes PPMP : Yes Local Label : 24000 (internal) RP/0/0/CPU0:PE2#sh mpl mldp database details Fri Jan 29 20:42:59.702 UTC mLDP database LSM-ID: 0x00001 Type: P2MP Uptime: 00:12:48 FEC Root : 2.2.2.2 (we are the root) FEC Length : 12 bytes FEC Value internal : 020100040000000102020202 Opaque length : 4 bytes Opaque value : 01 0004 00000001 Opaque decoded : [global-id 1] Features : Trace Upstream neighbor(s) : None Downstream client(s): LDP 10.10.10.10:0 Uptime: 00:09:09 Next Hop : 10.0.102.10 Interface : GigabitEthernet0/0/0/2 Remote label (D) : 24003 LDP MSG ID : 35 PIM MDT Uptime: 00:12:48 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 HLI : 0x00001 Ingress : Yes Peek : Yes PPMP : Yes Local Label : 24000 (internal) ``` {% endtab %} {% tab title="PE3" %} ``` RP/0/0/CPU0:PE3#sh mpl mldp database brief Fri Jan 29 20:51:16.139 UTC LSM ID Type Root Up Down Decoded Opaque Value 0x00002 P2MP 2.2.2.2 1 1 [global-id 1] 0x00001 P2MP 3.3.3.3 0 1 [global-id 1] RP/0/0/CPU0:PE3#sh mpl mldp database Fri Jan 29 20:51:18.288 UTC mLDP database LSM-ID: 0x00002 Type: P2MP Uptime: 00:17:28 FEC Root : 2.2.2.2 Opaque decoded : [global-id 1] Upstream neighbor(s) : 10.10.10.10:0 [Active] Uptime: 00:17:28 Local Label (D) : 24006 Downstream client(s): PIM MDT Uptime: 00:17:28 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 RPF ID : 3 RD : 514:33685504 LSM-ID: 0x00001 Type: P2MP Uptime: 00:19:10 FEC Root : 3.3.3.3 (we are the root) Opaque decoded : [global-id 1] Upstream neighbor(s) : None Downstream client(s): PIM MDT Uptime: 00:19:10 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 HLI : 0x00001 Ingress : Yes PPMP : Yes Local Label : 24000 (internal) RP/0/0/CPU0:PE3#sh mpl mldp database details Fri Jan 29 20:51:22.808 UTC mLDP database LSM-ID: 0x00002 Type: P2MP Uptime: 00:17:32 FEC Root : 2.2.2.2 FEC Length : 12 bytes FEC Value internal : 020100040000000102020202 Opaque length : 4 bytes Opaque value : 01 0004 00000001 Opaque decoded : [global-id 1] Features : Trace Upstream neighbor(s) : 10.10.10.10:0 [Active] Uptime: 00:17:32 Local Label (D) : 24006 Downstream client(s): PIM MDT Uptime: 00:17:32 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 RPF ID : 3 Peek : Yes RD : 514:33685504 LSM-ID: 0x00001 Type: P2MP Uptime: 00:19:15 FEC Root : 3.3.3.3 (we are the root) FEC Length : 12 bytes FEC Value internal : 020100040000000103030303 Opaque length : 4 bytes Opaque value : 01 0004 00000001 Opaque decoded : [global-id 1] Features : Trace Upstream neighbor(s) : None Downstream client(s): PIM MDT Uptime: 00:19:15 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 HLI : 0x00001 Ingress : Yes Peek : Yes PPMP : Yes Local Label : 24000 (internal) ``` {% endtab %} {% tab title="P" %} ``` RP/0/0/CPU0:P#sh mpl mldp database brief Fri Jan 29 21:15:57.137 UTC LSM ID Type Root Up Down Decoded Opaque Value 0x00001 P2MP 2.2.2.2 1 2 [global-id 1] RP/0/0/CPU0:P#sh mpl mldp database Fri Jan 29 21:15:59.376 UTC mLDP database LSM-ID: 0x00001 Type: P2MP Uptime: 00:42:08 FEC Root : 2.2.2.2 Opaque decoded : [global-id 1] Upstream neighbor(s) : 2.2.2.2:0 [Active] Uptime: 00:42:08 Local Label (D) : 24003 Downstream client(s): LDP 1.1.1.1:0 Uptime: 00:42:08 Next Hop : 10.0.101.1 Interface : GigabitEthernet0/0/0/1 Remote label (D) : 24006 LDP 3.3.3.3:0 Uptime: 00:42:08 Next Hop : 10.0.103.3 Interface : GigabitEthernet0/0/0/3 Remote label (D) : 24006 RP/0/0/CPU0:P#sh mpl mldp database details Fri Jan 29 21:16:02.986 UTC mLDP database LSM-ID: 0x00001 Type: P2MP Uptime: 00:42:12 FEC Root : 2.2.2.2 FEC Length : 12 bytes FEC Value internal : 020100040000000102020202 Opaque length : 4 bytes Opaque value : 01 0004 00000001 Opaque decoded : [global-id 1] Features : Trace Upstream neighbor(s) : 2.2.2.2:0 [Active] Uptime: 00:42:12 Local Label (D) : 24003 Downstream client(s): LDP 1.1.1.1:0 Uptime: 00:42:12 Next Hop : 10.0.101.1 Interface : GigabitEthernet0/0/0/1 Remote label (D) : 24006 LDP MSG ID : 12 LDP 3.3.3.3:0 Uptime: 00:42:12 Next Hop : 10.0.103.3 Interface : GigabitEthernet0/0/0/3 Remote label (D) : 24006 LDP MSG ID : 5 ``` {% endtab %} {% endtabs %} {% tabs %} {% tab title="PE1" %} ``` RP/0/0/CPU0:PE1#show mpls mldp bindings Fri Jan 29 20:49:35.925 UTC mLDP MPLS Bindings database LSP-ID: 0x00001 Paths: 1 Flags: Pk 0x00001 P2MP 1.1.1.1 [global-id 1] Local Label: 24000 Remote: 1048577 Inft: LmdtA RPF-ID: 0 TIDv4/v6: 0xE0000010/0xE0800010 LSP-ID: 0x00002 Paths: 2 Flags: Pk 0x00002 P2MP 2.2.2.2 [global-id 1] Local Label: 24006 Active Remote Label: 1048577 Inft: LmdtA RPF-ID: 3 TIDv4/v6: 0xE0000010/0xE0800010 ``` {% endtab %} {% tab title="PE2" %} ``` RP/0/0/CPU0:PE2#show mpls mldp bindings Fri Jan 29 20:50:08.693 UTC mLDP MPLS Bindings database LSP-ID: 0x00001 Paths: 2 Flags: Pk 0x00001 P2MP 2.2.2.2 [global-id 1] Local Label: 24000 Remote: 1048577 Inft: LmdtA RPF-ID: 0 TIDv4/v6: 0xE0000010/0xE0800010 Remote Label: 24003 NH: 10.0.102.10 Inft: GigabitEthernet0/0/0/2 ``` {% endtab %} {% tab title="PE3" %} ``` RP/0/0/CPU0:PE3#show mpls mldp bindings Fri Jan 29 20:50:42.431 UTC mLDP MPLS Bindings database LSP-ID: 0x00001 Paths: 1 Flags: Pk 0x00001 P2MP 3.3.3.3 [global-id 1] Local Label: 24000 Remote: 1048577 Inft: LmdtA RPF-ID: 0 TIDv4/v6: 0xE0000010/0xE0800010 LSP-ID: 0x00002 Paths: 2 Flags: Pk 0x00002 P2MP 2.2.2.2 [global-id 1] Local Label: 24006 Active Remote Label: 1048577 Inft: LmdtA RPF-ID: 3 TIDv4/v6: 0xE0000010/0xE0800010 ``` {% endtab %} {% tab title="P" %} ``` RP/0/0/CPU0:P#show mpls mldp bindings Fri Jan 29 21:15:17.199 UTC mLDP MPLS Bindings database LSP-ID: 0x00001 Paths: 3 Flags: 0x00001 P2MP 2.2.2.2 [global-id 1] Local Label: 24003 Active Remote Label: 24006 NH: 10.0.101.1 Inft: GigabitEthernet0/0/0/1 Remote Label: 24006 NH: 10.0.103.3 Inft: GigabitEthernet0/0/0/3 ``` {% endtab %} {% endtabs %} {% tabs %} {% tab title="PE1" %} ``` RP/0/0/CPU0:PE1#show mpls mldp lsm-id Fri Jan 29 20:52:13.344 UTC mLDP database LSM-ID: 0x00001 VRF: default Type: P2MP Uptime: 00:20:02 FEC Root : 1.1.1.1 (we are the root) Opaque decoded : [global-id 1] Upstream neighbor(s) : None Downstream client(s): PIM MDT Uptime: 00:20:02 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 HLI : 0x00001 Ingress : Yes PPMP : Yes Local Label : 24000 (internal) LSM-ID: 0x00002 VRF: default Type: P2MP Uptime: 00:18:22 FEC Root : 2.2.2.2 Opaque decoded : [global-id 1] Upstream neighbor(s) : 10.10.10.10:0 [Active] Uptime: 00:18:22 Local Label (D) : 24006 Downstream client(s): PIM MDT Uptime: 00:18:22 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 RPF ID : 3 RD : 514:33685504 ``` {% endtab %} {% tab title="PE2" %} ``` RP/0/0/CPU0:PE2#show mpls mldp lsm-id Fri Jan 29 20:53:00.801 UTC mLDP database LSM-ID: 0x00001 VRF: default Type: P2MP Uptime: 00:22:49 FEC Root : 2.2.2.2 (we are the root) Opaque decoded : [global-id 1] Upstream neighbor(s) : None Downstream client(s): LDP 10.10.10.10:0 Uptime: 00:19:10 Next Hop : 10.0.102.10 Interface : GigabitEthernet0/0/0/2 Remote label (D) : 24003 PIM MDT Uptime: 00:22:49 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 HLI : 0x00001 Ingress : Yes PPMP : Yes Local Label : 24000 (internal) ``` {% endtab %} {% tab title="PE3" %} ``` RP/0/0/CPU0:PE3#show mpls mldp lsm-id Fri Jan 29 20:53:35.669 UTC mLDP database LSM-ID: 0x00001 VRF: default Type: P2MP Uptime: 00:21:28 FEC Root : 3.3.3.3 (we are the root) Opaque decoded : [global-id 1] Upstream neighbor(s) : None Downstream client(s): PIM MDT Uptime: 00:21:28 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 HLI : 0x00001 Ingress : Yes PPMP : Yes Local Label : 24000 (internal) LSM-ID: 0x00002 VRF: default Type: P2MP Uptime: 00:19:45 FEC Root : 2.2.2.2 Opaque decoded : [global-id 1] Upstream neighbor(s) : 10.10.10.10:0 [Active] Uptime: 00:19:45 Local Label (D) : 24006 Downstream client(s): PIM MDT Uptime: 00:19:45 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 RPF ID : 3 RD : 514:33685504 ``` {% endtab %} {% tab title="P" %} ``` RP/0/0/CPU0:P#show mpls mldp lsm-id Fri Jan 29 21:14:50.611 UTC mLDP database LSM-ID: 0x00001 VRF: default Type: P2MP Uptime: 00:41:00 FEC Root : 2.2.2.2 Opaque decoded : [global-id 1] Upstream neighbor(s) : 2.2.2.2:0 [Active] Uptime: 00:41:00 Local Label (D) : 24003 Downstream client(s): LDP 1.1.1.1:0 Uptime: 00:41:00 Next Hop : 10.0.101.1 Interface : GigabitEthernet0/0/0/1 Remote label (D) : 24006 LDP 3.3.3.3:0 Uptime: 00:41:00 Next Hop : 10.0.103.3 Interface : GigabitEthernet0/0/0/3 Remote label (D) : 24006 ``` {% endtab %} {% endtabs %} ``` RP/0/0/CPU0:PE2#sh mrib vrf A route 232.1.1.1 192.168.2.2 detail Fri Jan 29 21:08:04.149 UTC IP Multicast Routing Information Base Entry flags: L - Domain-Local Source, E - External Source to the Domain, C - Directly-Connected Check, S - Signal, IA - Inherit Accept, IF - Inherit From, D - Drop, ME - MDT Encap, EID - Encap ID, MD - MDT Decap, MT - MDT Threshold Crossed, MH - MDT interface handle CD - Conditional Decap, MPLS - MPLS Decap, EX - Extranet MoFE - MoFRR Enabled, MoFS - MoFRR State, MoFP - MoFRR Primary MoFB - MoFRR Backup, RPFID - RPF ID Set, X - VXLAN Interface flags: F - Forward, A - Accept, IC - Internal Copy, NS - Negate Signal, DP - Don't Preserve, SP - Signal Present, II - Internal Interest, ID - Internal Disinterest, LI - Local Interest, LD - Local Disinterest, DI - Decapsulation Interface EI - Encapsulation Interface, MI - MDT Interface, LVIF - MPLS Encap, EX - Extranet, A2 - Secondary Accept, MT - MDT Threshold Crossed, MA - Data MDT Assigned, LMI - mLDP MDT Interface, TMI - P2MP-TE MDT Interface IRMI - IR MDT Interface (192.168.2.2,232.1.1.1) Ver: 0x611e RPF nbr: 192.168.2.2 Flags: RPF EID, FMA: 0x10000 Up: 00:34:14 RPF-ID: 0, Encap-ID: 1 Incoming Interface List GigabitEthernet0/0/0/0 Flags: A, Up: 00:34:14 Outgoing Interface List LmdtA Flags: F LMI TR, Up: 00:34:14, Head LSM-ID: 0x00001 RP/0/0/CPU0:PE2#sh mpl mldp database 0x00001 Fri Jan 29 21:08:35.777 UTC mLDP database LSM-ID: 0x00001 Type: P2MP Uptime: 00:38:24 FEC Root : 2.2.2.2 (we are the root) Opaque decoded : [global-id 1] Upstream neighbor(s) : None Downstream client(s): LDP 10.10.10.10:0 Uptime: 00:34:45 Next Hop : 10.0.102.10 Interface : GigabitEthernet0/0/0/2 Remote label (D) : 24003 PIM MDT Uptime: 00:38:24 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 HLI : 0x00001 Ingress : Yes PPMP : Yes Local Label : 24000 (internal) ``` {% tabs %} {% tab title="PE1" %} ``` RP/0/0/CPU0:PE1#sh mpl forwarding Fri Jan 29 21:11:56.563 UTC Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 24000 Unlabelled mLDP/IR: 0x00001 24001 24000 2.2.2.2/32 Gi0/0/0/1 10.0.101.10 46536 24002 24001 3.3.3.3/32 Gi0/0/0/1 10.0.101.10 4896 24003 Pop 10.10.10.10/32 Gi0/0/0/1 10.0.101.10 5028 24004 Pop 10.0.102.0/24 Gi0/0/0/1 10.0.101.10 0 24005 Pop 10.0.103.0/24 Gi0/0/0/1 10.0.101.10 0 24006 Unlabelled mLDP/IR: 0x00002 24007 Unlabelled 192.168.0.1/32[V] Gi0/0/0/0 192.168.1.2 0 24008 Aggregate A: Per-VRF Aggr[V] A 0 24009 Unlabelled 192.168.101.1/32[V] \ Gi0/0/0/0 192.168.1.2 0 ``` {% endtab %} {% tab title="P" %} ``` RP/0/0/CPU0:P#sh mpl forwarding Fri Jan 29 21:13:01.089 UTC Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 24000 Pop 2.2.2.2/32 Gi0/0/0/2 10.0.102.2 98182 24001 Pop 3.3.3.3/32 Gi0/0/0/3 10.0.103.3 12794 24002 Pop 1.1.1.1/32 Gi0/0/0/1 10.0.101.1 13465 24003 24006 mLDP/IR: 0x00001 Gi0/0/0/1 10.0.101.1 0 24006 mLDP/IR: 0x00001 Gi0/0/0/3 10.0.103.3 0 ``` {% endtab %} {% tab title="PE2" %} ``` RP/0/0/CPU0:PE2#sh mpl forwarding Fri Jan 29 21:13:20.238 UTC Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 24000 24003 mLDP/IR: 0x00001 Gi0/0/0/2 10.0.102.10 0 24001 Pop 10.10.10.10/32 Gi0/0/0/2 10.0.102.10 4684 24002 Pop 10.0.101.0/24 Gi0/0/0/2 10.0.102.10 0 24003 Pop 10.0.103.0/24 Gi0/0/0/2 10.0.102.10 0 24004 24001 3.3.3.3/32 Gi0/0/0/2 10.0.102.10 4475 24005 Aggregate A: Per-VRF Aggr[V] A 83040 24006 24002 1.1.1.1/32 Gi0/0/0/2 10.0.102.10 496800 ``` {% endtab %} {% tab title="PE3" %} ``` RP/0/0/CPU0:PE3#sh mpl forwarding Fri Jan 29 21:14:19.354 UTC Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 24000 Unlabelled mLDP/IR: 0x00001 24001 24000 2.2.2.2/32 Gi0/0/0/3 10.0.103.10 46750 24002 Pop 10.10.10.10/32 Gi0/0/0/3 10.0.103.10 5216 24003 Pop 10.0.101.0/24 Gi0/0/0/3 10.0.103.10 0 24004 Pop 10.0.102.0/24 Gi0/0/0/3 10.0.103.10 0 24005 24002 1.1.1.1/32 Gi0/0/0/3 10.0.103.10 5217 24006 Unlabelled mLDP/IR: 0x00002 24007 Unlabelled 192.168.0.3/32[V] Gi0/0/0/0 192.168.3.2 0 24008 Aggregate A: Per-VRF Aggr[V] A 0 24009 Unlabelled 192.168.101.3/32[V] \ Gi0/0/0/0 192.168.3.2 0 ``` {% endtab %} {% endtabs %} Let's follow the data-plane for group 232.1.1.1 starting from ingress PE2 to P and lastly to PE1 and PE3. Most interesting output is from P. As you can see P router replicates traffic which arrives with label `24003` to both PE1 and PE3. That's the heart of mVPN MLDP data-plane behaviour. {% tabs %} {% tab title="PE2" %} ``` RP/0/0/CPU0:PE2#sh mpl mldp database Fri Jan 29 21:28:50.384 UTC mLDP database LSM-ID: 0x00001 Type: P2MP Uptime: 00:58:39 FEC Root : 2.2.2.2 (we are the root) Opaque decoded : [global-id 1] Upstream neighbor(s) : None Downstream client(s): LDP 10.10.10.10:0 Uptime: 00:55:00 Next Hop : 10.0.102.10 Interface : GigabitEthernet0/0/0/2 Remote label (D) : 24003 PIM MDT Uptime: 00:58:39 Egress intf : LmdtA Table ID : IPv4: 0xe0000010 IPv6: 0xe0800010 HLI : 0x00001 Ingress : Yes PPMP : Yes Local Label : 24000 (internal) RP/0/0/CPU0:PE2#sh mpl forwarding labels 24000 Fri Jan 29 21:31:04.805 UTC Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 24000 24003 mLDP/IR: 0x00001 Gi0/0/0/2 10.0.102.10 0 ``` {% endtab %} {% tab title="P" %} ``` RP/0/0/CPU0:P#sh mpl forwarding labels 24003 Fri Jan 29 21:29:59.719 UTC Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 24003 24006 mLDP/IR: 0x00001 Gi0/0/0/1 10.0.101.1 0 24006 mLDP/IR: 0x00001 Gi0/0/0/3 10.0.103.3 0 ``` {% endtab %} {% tab title="PE1" %} ``` RP/0/0/CPU0:PE1#sh mpl forwarding labels 24006 Fri Jan 29 21:32:03.291 UTC Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 24006 Unlabelled mLDP/IR: 0x00002 ``` {% endtab %} {% tab title="PE3" %} ``` RP/0/0/CPU0:PE3#sh mpl forwarding labels 24006 Fri Jan 29 21:34:41.230 UTC Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 24006 Unlabelled mLDP/IR: 0x00002 ``` {% endtab %} {% endtabs %} Following output show what happens on P router when there's only one receiver behind PE1. CE3 is not requesting 232.1.1.1. So now P router does not replicate traffic ingressing the router with label `24003`. ``` RP/0/0/CPU0:P#sh mpl forwarding Sat Jan 30 17:50:55.090 UTC Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 24000 Pop 2.2.2.2/32 Gi0/0/0/2 10.0.102.2 1400279 24001 Pop 3.3.3.3/32 Gi0/0/0/3 10.0.103.3 401639 24002 Pop 1.1.1.1/32 Gi0/0/0/1 10.0.101.1 402253 24003 24006 mLDP/IR: 0x00001 Gi0/0/0/1 10.0.101.1 0 ``` ### 3. No receivers, there's an active source Actually there's nothing interesting in this case. Ingress PE has no parties interested in receiving `232.1.1.1`. Thus it just drops incoming stream. * [ ] Check CLI * [ ] Get a bit deeper. ``` ``` ### 4. Active receivers and active source {% tabs %} {% tab title="PE1" %} ``` RP/0/0/CPU0:PE1#sh bgp vrf A ipv4 mvpn Fri Jan 29 14:06:21.965 UTC BGP VRF A, state: Active BGP Route Distinguisher: 1.1.1.1:0 VRF ID: 0x60000001 BGP router identifier 1.1.1.1, local AS number 1 Non-stop routing is enabled BGP table state: Active Table ID: 0x0 RD version: 26 BGP main routing table version 26 BGP NSR Initial initsync version 8 (Reached) BGP NSR/ISSU Sync-Group versions 0/0 Status codes: s suppressed, d damped, h history, * valid, > best i - internal, r RIB-failure, S stale, N Nexthop-discard Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path Route Distinguisher: 1.1.1.1:0 (default for vrf A) *> [1][1.1.1.1]/40 0.0.0.0 0 i *>i[1][2.2.2.2]/40 2.2.2.2 100 0 i *>i[1][3.3.3.3]/40 3.3.3.3 100 0 i *> [3][0][0.0.0.0][0][0.0.0.0][1.1.1.1]/120 0.0.0.0 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][2.2.2.2]/120 2.2.2.2 100 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][3.3.3.3]/120 3.3.3.3 100 0 i *> [7][2.2.2.2:0][1][32][192.168.2.2][32][232.1.1.1]/184 0.0.0.0 0 i Processed 7 prefixes, 7 paths ``` {% endtab %} {% tab title="PE2" %} ``` RP/0/0/CPU0:PE2#sh bgp vrf A ipv4 mvpn Fri Jan 29 14:07:02.592 UTC BGP VRF A, state: Active BGP Route Distinguisher: 2.2.2.2:0 VRF ID: 0x60000001 BGP router identifier 2.2.2.2, local AS number 1 Non-stop routing is enabled BGP table state: Active Table ID: 0x0 RD version: 43 BGP main routing table version 43 BGP NSR Initial initsync version 4 (Reached) BGP NSR/ISSU Sync-Group versions 0/0 Status codes: s suppressed, d damped, h history, * valid, > best i - internal, r RIB-failure, S stale, N Nexthop-discard Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path Route Distinguisher: 2.2.2.2:0 (default for vrf A) *>i[1][1.1.1.1]/40 1.1.1.1 100 0 i *> [1][2.2.2.2]/40 0.0.0.0 0 i *>i[1][3.3.3.3]/40 3.3.3.3 100 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][1.1.1.1]/120 1.1.1.1 100 0 i *> [3][0][0.0.0.0][0][0.0.0.0][2.2.2.2]/120 0.0.0.0 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][3.3.3.3]/120 3.3.3.3 100 0 i *>i[7][2.2.2.2:0][1][32][192.168.2.2][32][232.1.1.1]/184 1.1.1.1 100 0 i * i 3.3.3.3 100 0 i Processed 7 prefixes, 8 paths ``` {% endtab %} {% tab title="PE3" %} ``` RP/0/0/CPU0:PE3#sh bgp vrf A ipv4 mvpn Fri Jan 29 14:07:39.700 UTC BGP VRF A, state: Active BGP Route Distinguisher: 3.3.3.3:0 VRF ID: 0x60000001 BGP router identifier 3.3.3.3, local AS number 1 Non-stop routing is enabled BGP table state: Active Table ID: 0x0 RD version: 28 BGP main routing table version 28 BGP NSR Initial initsync version 4 (Reached) BGP NSR/ISSU Sync-Group versions 0/0 Status codes: s suppressed, d damped, h history, * valid, > best i - internal, r RIB-failure, S stale, N Nexthop-discard Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path Route Distinguisher: 3.3.3.3:0 (default for vrf A) *>i[1][1.1.1.1]/40 1.1.1.1 100 0 i *>i[1][2.2.2.2]/40 2.2.2.2 100 0 i *> [1][3.3.3.3]/40 0.0.0.0 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][1.1.1.1]/120 1.1.1.1 100 0 i *>i[3][0][0.0.0.0][0][0.0.0.0][2.2.2.2]/120 2.2.2.2 100 0 i *> [3][0][0.0.0.0][0][0.0.0.0][3.3.3.3]/120 0.0.0.0 0 i *> [7][2.2.2.2:0][1][32][192.168.2.2][32][232.1.1.1]/184 0.0.0.0 0 i Processed 7 prefixes, 7 paths ``` {% endtab %} {% endtabs %} ## PE-CE uses ASM ### No receivers, no active sources ``` ``` ### Active receiver, no active sources ``` ``` ### No receivers, there's an active source ``` ``` ## mVPN interoperability issues Several vendors depending on a software version are using pre-RFC encoding for `C-Mcast Import RT`. In this case you won't find a correct extended community in VPNv4 updates. Instead there will be community which Cisco interprets as L2VPN AGI. ### Nokia: wrong extended community encoding Below you can find CLI to switch to RFC encoding. ``` BGP routing table entry for 555:95863000:10.90.5.128/26, version 24415 Paths: (2 available, best #2, table 555-VRF) Not advertised to any peer Refresh Epoch 1 65000 10.79.0.3 (metric 21570) (via default) from 10.79.192.245 (10.79.192.245) Origin IGP, metric 20, localpref 300, valid, internal Extended Community: SoO:555:324471 RT:555:95863000 MVPN AS:555:0.0.0.0 L2VPN AGI:10.79.0.3:345 Originator: 10.79.0.3, Cluster list: 10.79.192.245 mpls labels in/out nolabel/262034 rx pathid: 0, tx pathid: 0 Refresh Epoch 1 65000 10.79.0.3 (metric 21570) (via default) from 10.79.192.241 (10.79.192.241) Origin IGP, metric 20, localpref 300, valid, internal, best Extended Community: SoO:555:324471 RT:555:95863000 MVPN AS:555:0.0.0.0 L2VPN AGI:10.79.0.3:345 Originator: 10.79.0.3, Cluster list: 10.79.192.241 mpls labels in/out nolabel/262034 rx pathid: 0, tx pathid: 0x0 ``` {% tabs %} {% tab title="Nokia" %} ``` config>router>bgp# mvpn-vrf-import-subtype-new ``` {% endtab %} {% endtabs %} ![A screenshot from Nokia's documentation](https://1719571082-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LRR-eFgjBzBSfUKcev7%2F-MUERbNB_ENaXHOscS2Q%2F-MUET4Jho7IVIOOLBwVO%2Fnokia-screenshot.png?alt=media\&token=5156dbdd-808a-489d-a33f-ffe4cc0c81c8) After you apply it the encoding for extended community looks like the one below: ```yaml DRP/0/3/CPU0:meltdown-drp#show bgp vpnv4 unicast vrf one 10.2.2.0/24 BGP routing table entry for 10.2.2.0/24, Route Distinguisher: 1:2 Versions: Process bRIB/RIB SendTblVer Speaker 128 128 Local Label: 16000 Last Modified: May 5 08:37:28.075 for 03:52:19 Paths: (1 available, best #1) Advertised to peers (in unique update groups): 10.1.100.7 Path #1: Received by speaker 0 Advertised to peers (in unique update groups): 10.1.100.7 Local 0.0.0.0 from 0.0.0.0 (10.1.100.2) Origin incomplete, metric 0, localpref 100, weight 32768, valid, redistributed, best, group-best, import-candidate Received Path ID 0, Local Path ID 1, version 128 Extended community: VRF Route Import:10.1.100.2:2 Source AS:1:0 RT:1:1 ``` ### Juniper: mVPN Wildcard Type 3 wrong encoding [RFC6625](https://tools.ietf.org/html/rfc6625) defines a new zero-length source and group addresses for mVPN Type 3 BGP Update. ``` This document specifies that a "zero-length" source or group represents the corresponding wildcard. Specifically, - A source wildcard is encoded as a zero-length source field. That is, the "multicast source length" field contains the value 0x00, and the "multicast source" field is omitted. - A group wildcard is encoded as a zero-length group field. That is, the "multicast group length" field contains the value 0x00, and the "multicast group" field is omitted. ``` #### Direct iBGP between two Cisco NCS5500 172.16.1.44 (NCS5500) originates mVPN Type 3 and advertises it directly to 172.16.1.44 (NCS5500). Raw BGP message: ``` ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 73 02 00 00 00 5c 90 0e 00 19 00 01 05 04 ac 10 01 2c 00 03 0e 00 00 00 01 00 00 04 93 00 00 ac 10 01 2c 40 01 01 00 40 02 00 40 05 04 00 00 00 64 c0 08 04 ff ff ff 01 c0 10 08 00 02 00 01 00 00 00 75 c0 16 16 00 02 00 00 00 06 00 01 04 ac 10 01 2c 00 07 01 00 04 00 00 00 02 c0 46 03 05 df d1 ``` Decoded message: ``` MP_REACH_NLRI 0x900e001900010504AC10012C00030E00000001000004930000AC10012C ATTRIBUTE FLAG: 0x90 ATTRIBUTE FLAG binary: 10010000 Bit 0, the Optional bit, is 1 so this is an optional attribute Bit 1, the Transitive bit, is 0 so this is a non-transitive attribute Bit 2, the Partial bit, is not set Bit 3, the Extended Length Bit, is 1 so the length field is 2 bytes The lower-order four bits of the Attribute Flag are unused and are set to 0000 ATTRIBUTE TYPE: 0x0E - 14 ATTRIBUTE LENGTH: 0x0019 - 25 bytes ATTRIBUTE CONTENT: 0x00010504AC10012C00030E00000001000004930000AC10012C AFI: 1 (0x0001) Sub AFI: 5 (0x05) NEXTHOP Length: 4 (0x04) bytes NEXTHOP: 172.16.1.44 Numb of SNPAs: 0 (0x00) Route type: 3 (0x03) - S-PMSI A-D route NLRI Length: 14 bytes (0x0E) RD: 1:1171 (0x0000 - 0x0001:0x00000493) Multicast Source Length = 0 (0x00) Multicast Source Address = Multicast Group Length = 0 (0x00) Multicast Group Address = Originating Router IP Address = 172.16.1.44 ``` #### iBGP with Juniper RR 172.16.1.44 (NCS5500) originates mVPN Type 3 and advertises it to a route-reflector 172.16.1.41 (Juniper). RR then reflects the route to 172.16.1.43 (NCS5500). Raw BGP message: ``` FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 00 89 02 00 00 00 72 40 01 01 00 40 02 00 40 05 04 00 00 00 64 C0 08 04 FF FF FF 01 C0 10 08 00 02 00 01 00 00 00 75 80 09 04 AC 10 01 2C 80 0A 04 AC 10 01 29 C0 16 16 00 02 00 00 00 06 00 01 04 AC 10 01 2C 00 07 01 00 04 00 00 00 02 E0 46 03 05 DF D1 90 0E 00 21 00 01 05 04 AC 10 01 2C 00 03 16 00 00 00 01 00 00 04 93 00 00 00 00 00 00 00 00 00 00 AC 10 01 2C ``` Decoded message: ``` MP_REACH_NLRI 0x900e002100010504AC10012C000316000000010000049300000000000000000000AC10012C ATTRIBUTE FLAG: 0x90 ATTRIBUTE FLAG binary: 10010000 Bit 0, the Optional bit, is 1 so this is an optional attribute Bit 1, the Transitive bit, is 0 so this is a non-transitive attribute Bit 2, the Partial bit, is not set Bit 3, the Extended Length Bit, is 1 so the length field is 2 bytes The lower-order four bits of the Attribute Flag are unused and are set to 0000 ATTRIBUTE TYPE: 0x0E - 14 ATTRIBUTE LENGTH: 0x0021 - 33 bytes ATTRIBUTE CONTENT: 0x00010504AC10012C000316000000010000049300000000000000000000AC10012C AFI: 1 (0x0001) Sub AFI: 5 (0x05) NEXTHOP Length: 4 (0x04) bytes NEXTHOP: 172.16.1.44 Numb of SNPAs: 0 (0x00) Route type: 3 (0x03) - S-PMSI A-D route NLRI Length: 22 bytes (0x16) RD: 1:1171 (0x0000 - 0x0001:0x00000493) Multicast Source Length = 0 (0x00) Multicast Source Address = Multicast Group Length = 0 (0x00) Multicast Group Address = Originating Router IP Address = 0.0.0.0 Route type: 0 (0x00) - Unknown NLRI Length: 0 bytes (0x00) ERROR: NLRI length is 0 ERROR: data is 0000AC10012C ``` #### Key findings 1. Juniper RR receives the correct mVPN Type 3 Wildcard update with `Multicast Source Length` and `Multicast Group Length` set to `0x00`. `Multicast Source Address` and `Multicast Group Address` are omitted. 2. Juniper reflects a modified update with `Multicast Source Address` and `Multicast Group Address` fields set to `0.0.0.0`. 3. To reflect the changed NRLI length Juniper adjusts the `ATTRIBUTE LENGTH` and `NLRI Length` fields accordingly. 4. NCS5500 receives the corrupted update and reads it based on RFC6625 encoding. ```yaml Cisco: 0x900e001900010504AC10012C00030E00000001000004930000 AC10012C Juniper: 0x900e002100010504AC10012C000316000000010000049300000000000000000000AC10012C ``` #### Workaround on Juniper ``` set routing-options multicast omit-wildcard-address ``` ## Links {% embed url="" %}