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IOS XRv 6.1.1 NNI-Option-B Data Plane issue
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10-09-2016 03:47 PM
Hello,
I have a setup where 2 IOS-XRv routers are Option-B NNI peers within a confederation.
The control plane works fine but the data plane is not forwarding any traffic received from the peer.
I ran a 'debug mpls drop' on ASB-18 and at the same time a ping test from CE-11 Lo0 to CE-12 Lo0, it says there is no label for the host but the output of 'show mpls forwarding' shows the label.
(11.0.1.1)(Lo0) CE-11 <<<PE-A<<Confed-A>>>>> ASB-17 <---> ASB-18 <<<<<Confed-B>>>PE-B>> CE-12 (Lo0)(12.0.1.1)
NOTE: This setup works in the live network but couldnt make it in simulation.
What did i miss? Please help
Please see the config and output below:
ASB-18 Configuration:
RP/0/0/CPU0:ASB-18#sh run router bgp
Sun Oct 9 23:10:45.838 UTC
router bgp 1017
bgp confederation peers
1015
1020
!
bgp confederation identifier 6789
mpls activate
interface GigabitEthernet0/0/0/1
!
address-family vpnv4 unicast
retain route-target all
!
neighbor 5.5.5.5
remote-as 1017
update-source Loopback0
address-family vpnv4 unicast
next-hop-self
!
!
neighbor 8.8.8.8
remote-as 1020
ebgp-multihop 255 mpls
update-source Loopback0
address-family vpnv4 unicast
next-hop-self
!
!
neighbor 10.0.150.17
remote-as 1015
address-family vpnv4 unicast
next-hop-self
!
!
!
RP/0/0/CPU0:ASB-18#sh run router static
Sun Oct 9 23:10:51.138 UTC
router static
address-family ipv4 unicast
9.9.9.9/32 tunnel-te1809
10.0.150.17/32 GigabitEthernet0/0/0/1
10.10.10.10/32 tunnel-te1810
!
!
RP/0/0/CPU0:ASB-18#
RP/0/0/CPU0:ASB-18#sh run mpls
Sun Oct 9 23:13:49.495 UTC
mpls traffic-eng
interface GigabitEthernet0/0/0/0
!
!
mpls oam
!
RP/0/0/CPU0:ROW-ASB-18#sh bgp vpnv4 uni
Mon Oct 10 09:45:08.111 UTC
BGP router identifier 18.18.18.18, local AS number 1017
BGP generic scan interval 60 secs
Non-stop routing is enabled
BGP table state: Active
Table ID: 0x0 RD version: 0
BGP main routing table version 29
BGP NSR Initial initsync version 9 (Reached)
BGP NSR/ISSU Sync-Group versions 0/0
BGP scan interval 60 secs
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: 6789:2020
*> 11.0.1.1/32 10.0.150.17 0 100 0 (1015) 64512 i
*>i12.0.1.1/32 9.9.9.9 0 100 0 64512 i
*> 111.0.1.0/24 10.0.150.17 100 0 (1015) i
*>i129.0.1.0/24 9.9.9.9 100 0 i
Route Distinguisher: 6789:3030
*> 11.0.0.1/32 10.0.150.17 0 100 0 (1015) 64512 ?
*>i12.0.0.1/32 9.9.9.9 0 100 0 64512 ?
*> 111.0.0.0/24 10.0.150.17 100 0 (1015) i
*>i129.0.0.0/24 9.9.9.9 100 0 i
Processed 8 prefixes, 8 paths
RP/0/0/CPU0:ROW-ASB-18#
RP/0/0/CPU0:ROW-ASB-18#
RP/0/0/CPU0:ROW-ASB-18#sh bgp vpnv4 uni sum
Mon Oct 10 09:45:15.041 UTC
BGP router identifier 18.18.18.18, local AS number 1017
BGP generic scan interval 60 secs
Non-stop routing is enabled
BGP table state: Active
Table ID: 0x0 RD version: 0
BGP main routing table version 29
BGP NSR Initial initsync version 9 (Reached)
BGP NSR/ISSU Sync-Group versions 0/0
BGP scan interval 60 secs
BGP is operating in STANDALONE mode.
Process RcvTblVer bRIB/RIB LabelVer ImportVer SendTblVer StandbyVer
Speaker 29 29 29 29 29 0
Neighbor Spk AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down St/PfxRcd
5.5.5.5 0 1017 23 23 29 0 0 00:12:49 4
8.8.8.8 0 1020 28 26 29 0 0 00:12:48 0
10.0.150.17 0 1015 24 27 29 0 0 00:12:48 4
RP/0/0/CPU0:ROW-ASB-18#
RP/0/0/CPU0:ASB-18#
RP/0/0/CPU0:ASB-18#debug mpls drop
Sun Oct 9 23:11:36.644 UTC
RP/0/0/CPU0:ASB-18#
RP/0/0/CPU0:Oct 9 23:11:40.234 : netio[314]: [mpls_switch:2831] Pkt Drop: mpls_switch: GigabitEthernet0_0_0_1, No LFIB entry found for in_label 24003
RP/0/0/CPU0:Oct 9 23:11:42.204 : netio[314]: [mpls_switch:2831] Pkt Drop: mpls_switch: GigabitEthernet0_0_0_1, No LFIB entry found for in_label 24003
RP/0/0/CPU0:Oct 9 23:11:44.204 : netio[314]: [mpls_switch:2831] Pkt Drop: mpls_switch: GigabitEthernet0_0_0_1, No LFIB entry found for in_label 24003
RP/0/0/CPU0:Oct 9 23:11:46.194 : netio[314]: [mpls_switch:2831] Pkt Drop: mpls_switch: GigabitEthernet0_0_0_1, No LFIB entry found for in_label 24003
RP/0/0/CPU0:Oct 9 23:11:48.174 : netio[314]: [mpls_switch:2831] Pkt Drop: mpls_switch: GigabitEthernet0_0_0_1, No LFIB entry found for in_label 24003
RP/0/0/CPU0:ASB-18#sh mpls forwarding detail
Sun Oct 9 23:28:23.386 UTC
Local Outgoing Prefix Outgoing Next Hop Bytes
Label Label or ID Interface Switched
------ ----------- ------------------ ------------ --------------- ------------
24000 Pop 10.0.150.17/32 Gi0/0/0/1 10.0.150.17 8870
Updated: Oct 9 22:21:30.170
Path Flags: 0x8 [ ]
Version: 10, Priority: 4
Label Stack (Top -> Bottom): { Imp-Null }
NHID: 0x0, Encap-ID: N/A, Path idx: 0, Backup path idx: 0, Weight: 0
MAC/Encaps: 14/14, MTU: 1500
Packets Switched: 139
24003 131070 6789:2020:12.0.1.1/32 \
9.9.9.9 0
Updated: Oct 9 22:46:19.768
Path Flags: 0x6000 [ ]
Label Stack (Top -> Bottom): { }
MAC/Encaps: 0/0, MTU: 0
Packets Switched: 0
24004 131070 6789:2020:129.0.1.0/24 \
9.9.9.9 0
Updated: Oct 9 22:46:19.768
Path Flags: 0x6000 [ ]
Label Stack (Top -> Bottom): { }
MAC/Encaps: 0/0, MTU: 0
Packets Switched: 0
24005 131069 6789:3030:12.0.0.1/32 \
9.9.9.9 0
Updated: Oct 9 22:46:19.768
Path Flags: 0x6000 [ ]
Label Stack (Top -> Bottom): { }
MAC/Encaps: 0/0, MTU: 0
Packets Switched: 0
24006 131069 6789:3030:129.0.0.0/24 \
9.9.9.9 0
Updated: Oct 9 22:46:19.768
Path Flags: 0x6000 [ ]
Label Stack (Top -> Bottom): { }
MAC/Encaps: 0/0, MTU: 0
Packets Switched: 0
24007 24006 6789:2020:11.0.1.1/32 \
Gi0/0/0/1 10.0.150.17 0
Updated: Oct 9 22:46:30.387
Path Flags: 0x6000 [ ]
Version: 19, Priority: 4
Label Stack (Top -> Bottom): { 24006 }
NHID: 0x0, Encap-ID: N/A, Path idx: 0, Backup path idx: 0, Weight: 0
MAC/Encaps: 14/18, MTU: 1500
Packets Switched: 0
24008 24007 6789:2020:111.0.1.0/24 \
Gi0/0/0/1 10.0.150.17 0
Updated: Oct 9 22:46:30.417
Path Flags: 0x6000 [ ]
Version: 20, Priority: 4
Label Stack (Top -> Bottom): { 24007 }
NHID: 0x0, Encap-ID: N/A, Path idx: 0, Backup path idx: 0, Weight: 0
MAC/Encaps: 14/18, MTU: 1500
Packets Switched: 0
24009 24008 6789:3030:11.0.0.1/32 \
Gi0/0/0/1 10.0.150.17 0
Updated: Oct 9 22:46:30.417
Path Flags: 0x6000 [ ]
Version: 21, Priority: 4
Label Stack (Top -> Bottom): { 24008 }
NHID: 0x0, Encap-ID: N/A, Path idx: 0, Backup path idx: 0, Weight: 0
MAC/Encaps: 14/18, MTU: 1500
Packets Switched: 0
24010 24009 6789:3030:111.0.0.0/24 \
Gi0/0/0/1 10.0.150.17 0
Updated: Oct 9 22:46:30.417
Path Flags: 0x6000 [ ]
Version: 22, Priority: 4
Label Stack (Top -> Bottom): { 24009 }
NHID: 0x0, Encap-ID: N/A, Path idx: 0, Backup path idx: 0, Weight: 0
MAC/Encaps: 14/18, MTU: 1500
Packets Switched: 0
24011 131071 6789:2020:13.0.1.1/32 \
10.10.10.10 0
Updated: Oct 9 23:05:37.769
Path Flags: 0x6000 [ ]
Label Stack (Top -> Bottom): { }
MAC/Encaps: 0/0, MTU: 0
Packets Switched: 0
24012 131071 6789:2020:130.0.1.0/24 \
10.10.10.10 0
Updated: Oct 9 23:05:37.769
Path Flags: 0x6000 [ ]
Label Stack (Top -> Bottom): { }
MAC/Encaps: 0/0, MTU: 0
Packets Switched: 0
24013 131070 6789:3030:13.0.0.1/32 \
10.10.10.10 0
Updated: Oct 9 23:05:37.769
Path Flags: 0x6000 [ ]
Label Stack (Top -> Bottom): { }
MAC/Encaps: 0/0, MTU: 0
Packets Switched: 0
24014 131070 6789:3030:130.0.0.0/24 \
10.10.10.10 0
Updated: Oct 9 23:05:37.769
Path Flags: 0x6000 [ ]
Label Stack (Top -> Bottom): { }
MAC/Encaps: 0/0, MTU: 0
Packets Switched: 0
RP/0/0/CPU0:ASB-18#
RP/0/0/CPU0:ASB-18#
RP/0/0/CPU0:ASB-18#sh mpls forwarding tunnels detail
Sun Oct 9 23:22:55.658 UTC
Tunnel Outgoing Outgoing Next Hop Bytes
Name Label Interface Switched
------------- ----------- ------------ --------------- ------------
tt1809 600 Gi0/0/0/0 10.0.140.6 0
Updated: Oct 9 22:45:30.521
Version: 12, Priority: 2
Label Stack (Top -> Bottom): { 600 }
Local Label: 24001
NHID: 0x0, Encap-ID: N/A, Path idx: 0, Backup path idx: 0, Weight: 0
MAC/Encaps: 14/18, MTU: 1500
Packets Switched: 0
Interface Name: tunnel-te1809, Interface Handle: 0x00000090, Local Label: 24001
Forwarding Class: 0, Weight: 0
Packets/Bytes Switched: 0/0
tt1810 610 Gi0/0/0/0 10.0.140.6 0
Updated: Oct 9 23:05:37.689
Version: 54, Priority: 2
Label Stack (Top -> Bottom): { 610 }
Local Label: 24002
NHID: 0x0, Encap-ID: N/A, Path idx: 0, Backup path idx: 0, Weight: 0
MAC/Encaps: 14/18, MTU: 1500
Packets Switched: 0
RP/0/0/CPU0:ASB-18#
RP/0/0/CPU0:ASB-18#sh mpls forwarding exact-route label 24003 ipv4 10.0.150.17 9.9.9.9
Sun Oct 9 23:31:44.472 UTC
Local Outgoing Prefix Outgoing Next Hop Bytes
Label Label or ID Interface Switched
------ ----------- ------------------ ------------ --------------- ------------
24003 131070 6789:2020:12.0.1.1/32 \
point2point N/A
Via: NULLIFHNDL, Next Hop: special
Label Stack (Top -> Bottom): { 131070 }
NHID: 0x0, Encap-ID: N/A, Path idx: 0, Backup path idx: 0, Weight: 0
MAC/Encaps: 0/4, MTU: 0
RP/0/0/CPU0:ASB-18#
RP/0/0/CPU0:ASB-18#sh mpls traffic-eng forwarding
Sun Oct 9 23:43:24.424 UTC
P2P tunnels:
Tunnel ID Ingress IF Egress IF In lbl Out lbl Backup
-------------------------- -------------- -------------- ------- -------------- -------
18.18.18.18 1809_2 - Gi0/0/0/0 24001 600 unknown
18.18.18.18 1810_3 - Gi0/0/0/0 24002 610 unknown
Displayed 2 tunnel heads, 0 label P2P rewrites
Displayed 0 tunnel heads, 0 label P2MP rewrites
RP/0/0/CPU0:ASB-18#
RP/0/0/CPU0:ASB-18#
And then, there is this matter of Label Collision logs and I couldn't find any information about them
RP/0/0/CPU0:Oct 9 23:05:37.739 : bgp[1052]: %ROUTING-BGP-4-LABEL_COLLISION : Label 24012 collision: prev: [T: 11 RD:6789:2020 PFX/NHID:130.0.1.0/24] curr: [T: 11 RD:6789:2020 PFX/NHID:130.0.1.0/24]
RP/0/0/CPU0:Oct 9 23:05:37.749 : bgp[1052]: %ROUTING-BGP-4-LABEL_COLLISION : Label 24013 collision: prev: [T: 11 RD:6789:3030 PFX/NHID:13.0.0.1/32] curr: [T: 11 RD:6789:3030 PFX/NHID:13.0.0.1/32]
RP/0/0/CPU0:Oct 9 23:05:37.749 : bgp[1052]: %ROUTING-BGP-4-LABEL_COLLISION : Label 24014 collision: prev: [T: 11 RD:6789:3030 PFX/NHID:130.0.0.0/24] curr: [T: 11 RD:6789:3030 PFX/NHID:130.0.0.0/24]
ASB-17 Configuration:
RP/0/0/CPU0:ASB-17#sh run router bgp
Sun Oct 9 23:16:10.245 UTC
router bgp 1015
bgp confederation peers
1017
1020
!
bgp confederation identifier 6789
mpls activate
interface GigabitEthernet0/0/0/1
!
address-family vpnv4 unicast
retain route-target all
!
neighbor 2.2.2.2
remote-as 1015
update-source Loopback0
address-family vpnv4 unicast
next-hop-self
!
!
neighbor 10.0.150.18
remote-as 1017
address-family vpnv4 unicast
next-hop-self
!
!
!
RP/0/0/CPU0:ASB-17#sh run router static
Sun Oct 9 23:16:15.485 UTC
router static
address-family ipv4 unicast
1.1.1.1/32 tunnel-te1701
10.0.150.18/32 GigabitEthernet0/0/0/1
!
!
RP/0/0/CPU0:PE-ASB-17#sh bgp vpnv4 uni
Mon Oct 10 09:44:48.582 UTC
BGP router identifier 17.17.17.17, local AS number 1015
BGP generic scan interval 60 secs
Non-stop routing is enabled
BGP table state: Active
Table ID: 0x0 RD version: 0
BGP main routing table version 33
BGP NSR Initial initsync version 9 (Reached)
BGP NSR/ISSU Sync-Group versions 0/0
BGP scan interval 60 secs
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: 6789:2020
*>i11.0.1.1/32 1.1.1.1 0 100 0 64512 i
*> 12.0.1.1/32 10.0.150.18 0 100 0 (1017) 64512 i
*>i111.0.1.0/24 1.1.1.1 100 0 i
*> 129.0.1.0/24 10.0.150.18 100 0 (1017) i
Route Distinguisher: 6789:3030
*>i11.0.0.1/32 1.1.1.1 0 100 0 64512 ?
*> 12.0.0.1/32 10.0.150.18 0 100 0 (1017) 64512 ?
*>i111.0.0.0/24 1.1.1.1 100 0 i
*> 129.0.0.0/24 10.0.150.18 100 0 (1017) i
Processed 8 prefixes, 8 paths
RP/0/0/CPU0:ASB-17#
RP/0/0/CPU0:ASB-17#
RP/0/0/CPU0:ASB-17#
RP/0/0/CPU0:ASB-17#sh bgp vpnv4 uni sum
Mon Oct 10 09:45:21.640 UTC
BGP router identifier 17.17.17.17, local AS number 1015
BGP generic scan interval 60 secs
Non-stop routing is enabled
BGP table state: Active
Table ID: 0x0 RD version: 0
BGP main routing table version 33
BGP NSR Initial initsync version 9 (Reached)
BGP NSR/ISSU Sync-Group versions 0/0
BGP scan interval 60 secs
BGP is operating in STANDALONE mode.
Process RcvTblVer bRIB/RIB LabelVer ImportVer SendTblVer StandbyVer
Speaker 33 33 33 33 33 0
Neighbor Spk AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down St/PfxRcd
2.2.2.2 0 1015 23 23 33 0 0 00:13:14 4
10.0.150.18 0 1017 27 24 33 0 0 00:12:53 4
RP/0/0/CPU0:ASB-17#
RP/0/0/CPU0:ASB-17#sh run mpls
Sun Oct 9 23:16:19.715 UTC
mpls traffic-eng
interface GigabitEthernet0/0/0/0
!
!
mpls oam
!
RP/0/0/CPU0:ASB-17#
RP/0/0/CPU0:ASB-17#sh mpls forwarding
Sun Oct 9 23:16:39.443 UTC
Local Outgoing Prefix Outgoing Next Hop Bytes
Label Label or ID Interface Switched
------ ----------- ------------------ ------------ --------------- ------------
24000 Pop 10.0.150.18/32 Gi0/0/0/1 10.0.150.18 11419
24002 24003 6789:2020:12.0.1.1/32 \
Gi0/0/0/1 10.0.150.18 4160
24003 24004 6789:2020:129.0.1.0/24 \
Gi0/0/0/1 10.0.150.18 0
24004 24005 6789:3030:12.0.0.1/32 \
Gi0/0/0/1 10.0.150.18 0
24005 24006 6789:3030:129.0.0.0/24 \
Gi0/0/0/1 10.0.150.18 0
24006 131070 6789:2020:11.0.1.1/32 \
1.1.1.1 0
24007 131070 6789:2020:111.0.1.0/24 \
1.1.1.1 0
24008 131069 6789:3030:11.0.0.1/32 \
1.1.1.1 0
24009 131069 6789:3030:111.0.0.0/24 \
1.1.1.1 0
24010 24011 6789:2020:13.0.1.1/32 \
Gi0/0/0/1 10.0.150.18 0
24011 24012 6789:2020:130.0.1.0/24 \
Gi0/0/0/1 10.0.150.18 0
24012 24013 6789:3030:13.0.0.1/32 \
Gi0/0/0/1 10.0.150.18 0
24013 24014 6789:3030:130.0.0.0/24 \
Gi0/0/0/1 10.0.150.18 0
RP/0/0/CPU0:ASB-17#
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02-07-2022 11:26 PM
I am seeing this problem on my setup, did any of you manage to find a solution for this, please?
Regards,
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