R1, R3 and R7
vrf definition MVPN
address-family ipv4
mdt preference mldp
mdt auto-discovery mldp
mdt default mpls mldp p2mp
mdt data mpls mldp 10
XR1
multicast-routing
vrf CORE
address-family ipv4
bgp auto-discovery mldp
!
mdt default mldp p2mp
mdt data 10
mdt data mldp 10 immediate-switch
R1#sh ip pim vrf MVPN neighbor
PIM Neighbor Table
Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
P - Proxy Capable, S - State Refresh Capable, G - GenID Capable,
L - DR Load-balancing Capable
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
100.64.201.15 GigabitEthernet1.201 2d20h/00:01:27 v2 1 / DR S P G
192.0.2.21 Lspvif0 04:30:52/00:01:15 v2 1 / DR G
192.0.2.7 Lspvif0 04:47:18/00:01:33 v2 1 / S P G
192.0.2.3 Lspvif0 04:47:38/00:01:23 v2 1 / S P G
RP/0/0/CPU0:XR1#sh pim vrf CORE neighbor
Sat Dec 22 20:12:45.173 UTC
PIM neighbors in VRF CORE
Flag: B - Bidir capable, P - Proxy capable, DR - Designated Router,
E - ECMP Redirect capable
* indicates the neighbor created for this router
Neighbor Address Interface Uptime Expires DR pri Flags
100.64.204.11* GigabitEthernet0/0/0/0.204 2d19h 00:01:34 1 B E
100.64.204.16 GigabitEthernet0/0/0/0.204 2d19h 00:01:31 1 (DR) P
192.0.2.1 LmdtCORE 04:42:43 00:01:41 1 P
192.0.2.3 LmdtCORE 04:42:42 00:01:33 1 P
192.0.2.7 LmdtCORE 04:42:42 00:01:43 1 P
192.0.2.21* LmdtCORE 04:43:00 00:01:25 1 (DR)
R1#sh bgp ipv4 mvpn all | b Network
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 100:100 (default for vrf MVPN)
*> [1][100:100][192.0.2.1]/12
0.0.0.0 32768 ?
*>i [1][100:100][192.0.2.3]/12
192.0.2.3 0 100 0 ?
*>i [1][100:100][192.0.2.7]/12
192.0.2.7 0 100 0 ?
*>i [1][100:100][192.0.2.21]/12
192.0.2.21 100 0 i
*> [3][100:100][192.0.2.15][232.15.15.15][192.0.2.1]/22
0.0.0.0 32768 ?
R1#sh bgp ipv4 mvpn all route-type 1 192.0.2.7
BGP routing table entry for [1][100:100][192.0.2.7]/12, version 163
Paths: (1 available, best #1, table MVPNv4-BGP-Table, not advertised to EBGP peer)
Not advertised to any peer
Refresh Epoch 1
Local
192.0.2.7 (metric 5) from 192.0.2.22 (192.0.2.22)
Origin incomplete, metric 0, localpref 100, valid, internal, best
Community: no-export
Extended Community: RT:100:100
Originator: 192.0.2.7, Cluster list: 192.0.2.22
PMSI Attribute: Flags: 0x0, Tunnel type: 2, length 17, label: exp-null, tunnel parameters: 0600 0104 C000 0207 0007 0100 0400 0100 00
rx pathid: 0, tx pathid: 0x0
R1#sh bgp ipv4 mvpn all route-type 3 192.0.2.15 232.15.15.15 192.0.2.1
BGP routing table entry for [3][100:100][192.0.2.15][232.15.15.15][192.0.2.1]/22, version 188
Paths: (1 available, best #1, table MVPNv4-BGP-Table, not advertised to EBGP peer)
Advertised to update-groups:
3
Refresh Epoch 1
Local
0.0.0.0 from 0.0.0.0 (192.0.2.1)
Origin incomplete, localpref 100, weight 32768, valid, sourced, local, best
Community: no-export
Extended Community: RT:100:100
PMSI Attribute: Flags: 0x0, Tunnel type: 2, length 17, label: exp-null, tunnel parameters: 0600 0104 C000 0201 0007 0100 0400 0100 01
rx pathid: 0, tx pathid: 0x0
R7#sh ip pim vrf MVPN neighbor
PIM Neighbor Table
Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
P - Proxy Capable, S - State Refresh Capable, G - GenID Capable,
L - DR Load-balancing Capable
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
100.64.214.18 GigabitEthernet1.214 2d20h/00:01:38 v2 1 / DR S P G
192.0.2.21 Lspvif0 04:37:39/00:01:30 v2 1 / DR G
192.0.2.1 Lspvif0 04:54:04/00:01:39 v2 1 / S P G
192.0.2.3 Lspvif0 04:54:04/00:01:30 v2 1 / S P G
R7#sh bgp ipv4 mvpn all | b Network
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 100:100 (default for vrf MVPN)
*>i [1][100:100][192.0.2.1]/12
192.0.2.1 0 100 0 ?
*>i [1][100:100][192.0.2.3]/12
192.0.2.3 0 100 0 ?
*> [1][100:100][192.0.2.7]/12
0.0.0.0 32768 ?
*>i [1][100:100][192.0.2.21]/12
192.0.2.21 100 0 i
*>i [3][100:100][192.0.2.15][232.15.15.15][192.0.2.1]/22
192.0.2.1 0 100 0 ?
We have verified that the FHRs and LHRs have formed PIM neighborships and that the BGP MVPN table is built. We will begin verifying the MPLS MLDP database and the MPLS forwarding table.
R1#show mpls mldp database | in FEC Root|Label|P2MP
LSM ID : 23 Type: P2MP Uptime : 04:45:05
FEC Root : 192.0.2.21
Out Label (U) : None Interface : GigabitEthernet1.14*
Local Label (D): 1022 Next Hop : 100.64.14.4
LSM ID : 1F Type: P2MP Uptime : 05:03:45
FEC Root : 192.0.2.1 (we are the root)
LSM ID : 20 Type: P2MP Uptime : 05:03:27
FEC Root : 192.0.2.3
Out Label (U) : None Interface : GigabitEthernet1.12*
Local Label (D): 1020 Next Hop : 100.64.12.2
LSM ID : 21 Type: P2MP Uptime : 05:01:24
FEC Root : 192.0.2.7
Out Label (U) : None Interface : GigabitEthernet1.14*
Local Label (D): 1021 Next Hop : 100.64.14.4
LSM ID : 22 Type: P2MP Uptime : 04:58:00
FEC Root : 192.0.2.1 (we are the root)
R1#show mpls forwarding-table labels 1020 - 1025
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
1020 [T] No Label [gid 65536 (0x00010000)][V] \
0 aggregate/MVPN
1021 [T] No Label [gid 65536 (0x00010000)][V] \
0 aggregate/MVPN
1022 [T] No Label [gid 1 (0x00000001)][V] \
1098 aggregate/MVPN
RP/0/0/CPU0:XR1#sh mpls mldp database | in "FEC Root|Label|P2MP"
Sat Dec 22 20:28:25.279 UTC
LSM-ID: 0x00009 Type: P2MP Uptime: 04:47:00
FEC Root : 192.0.2.21 (we are the root)
Local Label : 91010 (internal)
LSM-ID: 0x00006 Type: P2MP Uptime: 04:58:40
FEC Root : 192.0.2.1
Local Label (D) : 91011
LSM-ID: 0x00007 Type: P2MP Uptime: 04:58:40
FEC Root : 192.0.2.3
Local Label (D) : 91013
LSM-ID: 0x00008 Type: P2MP Uptime: 04:58:40
FEC Root : 192.0.2.7
Local Label (D) : 91014
RP/0/0/CPU0:XR1#show mpls forwarding labels 91010 91015
Sat Dec 22 20:28:48.207 UTC
Local Outgoing Prefix Outgoing Next Hop Bytes
Label Label or ID Interface Switched
------ ----------- ------------------ ------------ --------------- ------------
91010 92018 MLDP: 0x00009 Gi0/0/0/0.112 100.64.112.120 0
4021 MLDP: 0x00009 Gi0/0/0/0.114 100.64.114.4 0
91011 Unlabelled MLDP: 0x00006
91013 Unlabelled MLDP: 0x00007
91014 Unlabelled MLDP: 0x00008
R3#sh mpls mldp database | in P2MP|FEC Root|Label
LSM ID : 1F Type: P2MP Uptime : 04:48:21
FEC Root : 192.0.2.21
Out Label (U) : None Interface : GigabitEthernet1.36*
Local Label (D): 3025 Next Hop : 100.64.36.6
LSM ID : 1C Type: P2MP Uptime : 05:06:43
FEC Root : 192.0.2.1
Out Label (U) : None Interface : GigabitEthernet1.23*
Local Label (D): 3022 Next Hop : 100.64.23.2
LSM ID : 1B Type: P2MP Uptime : 05:06:43
FEC Root : 192.0.2.3 (we are the root)
LSM ID : 1D Type: P2MP Uptime : 05:04:40
FEC Root : 192.0.2.7
Out Label (U) : None Interface : GigabitEthernet1.36*
Local Label (D): 3021 Next Hop : 100.64.36.6
LSM ID : 1E Type: P2MP Uptime : 05:01:17
FEC Root : 192.0.2.1
Out Label (U) : None Interface : GigabitEthernet1.23*
Local Label (D): 3024 Next Hop : 100.64.23.2
R3#sh mpls forwarding-table labels 3020 - 3025
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
3021 [T] No Label [gid 65536 (0x00010000)][V] \
0 aggregate/MVPN
3022 [T] No Label [gid 65536 (0x00010000)][V] \
2196 aggregate/MVPN
3024 [T] No Label [gid 65537 (0x00010001)][V] \
1220 aggregate/MVPN
3025 [T] No Label [gid 1 (0x00000001)][V] \
2318 aggregate/MVPN
R7#sh mpls mldp database | in Label|FEC Root
FEC Root : 192.0.2.21
Out Label (U) : None Interface : GigabitEthernet1.127*
Local Label (D): 7021 Next Hop : 100.64.127.12
FEC Root : 192.0.2.1
Out Label (U) : None Interface : GigabitEthernet1.67*
Local Label (D): 7025 Next Hop : 100.64.67.6
FEC Root : 192.0.2.3
Out Label (U) : None Interface : GigabitEthernet1.67*
Local Label (D): 7022 Next Hop : 100.64.67.6
FEC Root : 192.0.2.7 (we are the root)
R7#sh mpls forwarding-table labels 7020 - 7025
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
7021 [T] No Label [gid 1 (0x00000001)][V] \
6100 aggregate/MVPN
6020 [gid 1 (0x00000001)][V] \
55620 Gi1.67 100.64.67.6
7022 [T] No Label [gid 65536 (0x00010000)][V] \
0 aggregate/MVPN
7025 [T] No Label [gid 65536 (0x00010000)][V] \
3538 aggregate/MVPN
Now that we have verified the MLDP database and the forwarding tables, we know which labels to check later on and we can begin forwarding traffic. We'll start with the ASM groups on R15 and R16 and then the SSM groups. On R7 we know that label 7021 is for traffic from XR1 and label 7025 is for traffic from R1. On R3 we know that label 3025 is for traffic from XR1 and label 3022 is for traffic from R1.
R15#ping 227.1.2.3 repeat 5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 227.1.2.3, timeout is 2 seconds:
Reply to request 0 from 100.64.211.17, 47 ms
Reply to request 0 from 192.0.2.18, 86 ms
Reply to request 0 from 192.0.2.17, 49 ms
Reply to request 0 from 100.64.214.18, 48 ms
Reply to request 1 from 192.0.2.17, 7 ms
Reply to request 1 from 192.0.2.18, 30 ms
Reply to request 1 from 100.64.214.18, 21 ms
Reply to request 1 from 192.0.2.18, 11 ms
Reply to request 1 from 192.0.2.17, 10 ms
Reply to request 1 from 100.64.211.17, 7 ms
Reply to request 2 from 192.0.2.17, 10 ms
Reply to request 2 from 192.0.2.18, 19 ms
Reply to request 2 from 192.0.2.17, 12 ms
Reply to request 2 from 192.0.2.18, 11 ms
Reply to request 3 from 192.0.2.17, 7 ms
Reply to request 3 from 192.0.2.18, 13 ms
Reply to request 3 from 192.0.2.18, 12 ms
Reply to request 3 from 192.0.2.17, 7 ms
Reply to request 4 from 192.0.2.17, 7 ms
Reply to request 4 from 192.0.2.18, 12 ms
Reply to request 4 from 192.0.2.18, 11 ms
Reply to request 4 from 192.0.2.17, 9 ms
After pinging the ASM group 227.1.2.3 we can verify the LFIBs on R3 and R7.
R3#sh mpls forwarding-table labels 3020 - 3025
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
3020 [T] No Label [gid 65539 (0x00010003)][V] \
0 aggregate/MVPN
3021 [T] No Label [gid 65536 (0x00010000)][V] \
0 aggregate/MVPN
3022 [T] No Label [gid 65536 (0x00010000)][V] \
2806 aggregate/MVPN
3023 [T] No Label [gid 65538 (0x00010002)][V] \
0 aggregate/MVPN
3024 [T] No Label [gid 65537 (0x00010001)][V] \
1220 aggregate/MVPN
3025 [T] No Label [gid 1 (0x00000001)][V] \
2318 aggregate/MVPN
We can see that label 3022 has incremented from 2196 to 2806.
R7#sh mpls forwarding-table labels 7019 - 7025
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
7019 No Label 100.64.214.0/24[V] \
0 aggregate/MVPN
7021 [T] No Label [gid 1 (0x00000001)][V] \
6100 aggregate/MVPN
6020 [gid 1 (0x00000001)][V] \
55860 Gi1.67 100.64.67.6
7022 [T] No Label [gid 65536 (0x00010000)][V] \
0 aggregate/MVPN
7025 [T] No Label [gid 65536 (0x00010000)][V] \
3904 aggregate/MVPN
R16#ping 227.1.2.3 repeat 5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 227.1.2.3, timeout is 2 seconds:
Reply to request 0 from 100.64.214.18, 47 ms
Reply to request 0 from 192.0.2.17, 48 ms
Reply to request 0 from 100.64.211.17, 47 ms
Reply to request 0 from 192.0.2.18, 47 ms
Reply to request 1 from 192.0.2.18, 10 ms
Reply to request 1 from 192.0.2.18, 16 ms
Reply to request 1 from 192.0.2.17, 14 ms
Reply to request 1 from 100.64.211.17, 14 ms
Reply to request 1 from 100.64.214.18, 14 ms
Reply to request 1 from 192.0.2.17, 11 ms
Reply to request 2 from 192.0.2.18, 11 ms
Reply to request 2 from 192.0.2.17, 12 ms
Reply to request 2 from 192.0.2.17, 12 ms
Reply to request 2 from 192.0.2.18, 11 ms
Reply to request 3 from 192.0.2.18, 9 ms
Reply to request 3 from 192.0.2.17, 15 ms
Reply to request 3 from 192.0.2.17, 11 ms
Reply to request 3 from 192.0.2.18, 11 ms
Reply to request 4 from 192.0.2.18, 8 ms
Reply to request 4 from 192.0.2.17, 14 ms
Reply to request 4 from 192.0.2.17, 13 ms
Reply to request 4 from 192.0.2.18, 11 ms
R3#sh mpls forwarding-table labels 3020 - 3025
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
3021 [T] No Label [gid 65536 (0x00010000)][V] \
0 aggregate/MVPN
3022 [T] No Label [gid 65536 (0x00010000)][V] \
3538 aggregate/MVPN
3024 [T] No Label [gid 65537 (0x00010001)][V] \
1220 aggregate/MVPN
3025 [T] No Label [gid 1 (0x00000001)][V] \
3172 aggregate/MVPN
We can see that that label 3022 has incremented yet again.
R7#sh mpls forwarding-table labels 7019 - 7025
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
7019 No Label 100.64.214.0/24[V] \
0 aggregate/MVPN
7021 [T] No Label [gid 1 (0x00000001)][V] \
5368 aggregate/MVPN
6020 [gid 1 (0x00000001)][V] \
52408 Gi1.67 100.64.67.6
7022 [T] No Label [gid 65536 (0x00010000)][V] \
0 aggregate/MVPN
7025 [T] No Label [gid 65536 (0x00010000)][V] \
3538 aggregate/MVPN
We clear the counters, clear mpls counters and retested.
R7#sh mpls forwarding-table labels 7019 - 7025
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
7019 No Label 100.64.214.0/24[V] \
0 aggregate/MVPN
7021 [T] No Label [gid 1 (0x00000001)][V] \
1464 aggregate/MVPN
6020 [gid 1 (0x00000001)][V] \
2308 Gi1.67 100.64.67.6
7022 [T] No Label [gid 65536 (0x00010000)][V] \
0 aggregate/MVPN
7025 [T] No Label [gid 65536 (0x00010000)][V] \
610 aggregate/MVPN
R15#ping 232.15.15.15 source l00 repeat 2
Type escape sequence to abort.
Sending 2, 100-byte ICMP Echos to 232.15.15.15, timeout is 2 seconds:
Packet sent with a source address of 192.0.2.15
Reply to request 0 from 192.0.2.17, 6 ms
Reply to request 0 from 192.0.2.17, 6 ms
Reply to request 1 from 192.0.2.17, 9 ms
Reply to request 1 from 192.0.2.17, 10 ms
R3#sh mpls forwarding-table labels 3020 - 3025
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
3021 [T] No Label [gid 65536 (0x00010000)][V] \
0 aggregate/MVPN
3022 [T] No Label [gid 65536 (0x00010000)][V] \
3538 aggregate/MVPN
3024 [T] No Label [gid 65537 (0x00010001)][V] \
1708 aggregate/MVPN
3025 [T] No Label [gid 1 (0x00000001)][V] \
3172 aggregate/MVPN
R16#ping 232.16.16.16 so lo0 repeat 2
Type escape sequence to abort.
Sending 2, 100-byte ICMP Echos to 232.16.16.16, timeout is 2 seconds:
Packet sent with a source address of 192.0.2.16
Reply to request 0 from 192.0.2.18, 8 ms
Reply to request 0 from 192.0.2.18, 9 ms
Reply to request 1 from 192.0.2.18, 8 ms
Reply to request 1 from 192.0.2.18, 8 ms
R7#sh mpls forwarding-table labels 7019 - 7025
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
7019 No Label 100.64.214.0/24[V] \
0 aggregate/MVPN
7021 [T] No Label [gid 1 (0x00000001)][V] \
6100 aggregate/MVPN
6020 [gid 1 (0x00000001)][V] \
53460 Gi1.67 100.64.67.6
7022 [T] No Label [gid 65536 (0x00010000)][V] \
0 aggregate/MVPN
7025 [T] No Label [gid 65536 (0x00010000)][V] \
3538 aggregate/MVPN
Label 7021 is for traffic from XR1 and talks directly to R18.
Thanks for stopping by!
Rob Riker, CCIE #50693
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