Cisco ASR9006 bgp always idle

[Umit AYDINLI]

Hi,

I can try to configure asr 9006 for bgp but I always see bgp neigbours idle. My configrations and asr logs are below. What can I do? Could you advice me please.

ASR 9006 Router Config:

!

route-policy Accept-All

  pass

  end-policy

!

router bgp 100

bgp router-id 192.168.96.92

address-family ipv4 unicast

!

address-family ipv6 unicast

!

neighbor 192.168.96.4

  remote-as 100

  update-source MgmtEth0/RSP0/CPU0/0

  address-family ipv4 unicast

   route-policy Accept-All in

   route-policy Accept-All out

  !

  address-family ipv6 unicast

  !

!

!

RP/0/RSP1/CPU0:#sh bgp summary

Tue Jun 19 21:08:40.414 GMT

BGP router identifier 192.168.96.92, local AS number 100

BGP generic scan interval 60 secs

BGP table state: Active

Table ID: 0xe0000000   RD version: 0

BGP main routing table version 1

BGP scan interval 60 secs

BGP is operating in STANDALONE mode.

Process       RcvTblVer   bRIB/RIB   LabelVer  ImportVer  SendTblVer  StandbyVer

Speaker               1          0          0          1           0           0

Neighbor        Spk    AS MsgRcvd MsgSent   TblVer  InQ OutQ  Up/Down  St/PfxRcd

192.168.96.4      0   100       0       0        0    0    0 00:00:00 Idle

RP/0/RSP1/CPU0:#

debug bgp

debug bgp io

debug bgp

debug bgp events

term mon

RP/0/RSP0/CPU0:Jun 19 21:15:01.746 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:15:01.808 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:15:12.830 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:15:12.830 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:15:12.830 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:15:12.831 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP1/CPU0:Jun 19 21:15:14.941 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:15:14.941 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:15:14.941 : bgp[1039]: [ioct]: Open to 192.168.96.4 delayed 30s (open checks failed)

RP/0/RSP0/CPU0:Jun 19 21:15:16.748 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:15:16.810 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:15:27.167 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:15:27.167 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:15:27.167 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:15:27.168 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP0/CPU0:Jun 19 21:15:31.750 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:15:31.812 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:15:41.503 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:15:41.504 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:15:41.504 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:15:41.504 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP1/CPU0:Jun 19 21:15:41.544 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:15:41.544 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:15:41.544 : bgp[1039]: [ioct]: Open to 192.168.96.4 delayed 30s (open checks failed)

RP/0/RSP0/CPU0:Jun 19 21:15:46.752 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:15:46.814 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:15:49.696 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:15:49.696 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:15:49.696 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:15:49.696 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP1/CPU0:Jun 19 21:15:55.840 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:15:55.841 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:15:55.841 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:15:55.841 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP0/CPU0:Jun 19 21:16:01.754 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:16:01.816 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:16:06.933 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:16:06.933 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:16:06.933 : bgp[1039]: [ioct]: Open to 192.168.96.4 delayed 30s (open checks failed)

RP/0/RSP1/CPU0:Jun 19 21:16:08.133 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:16:08.133 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:16:08.133 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:16:08.133 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP0/CPU0:Jun 19 21:16:16.756 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:16:16.817 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:16:20.420 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:16:20.421 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:16:20.421 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:16:20.421 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP1/CPU0:Jun 19 21:16:27.589 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:16:27.590 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:16:27.590 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:16:27.590 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP1/CPU0:Jun 19 21:16:29.100 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:16:29.100 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:16:29.100 : bgp[1039]: [ioct]: Open to 192.168.96.4 delayed 30s (open checks failed)

RP/0/RSP0/CPU0:Jun 19 21:16:31.758 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:16:31.819 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:16:35.781 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:16:35.781 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:16:35.782 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:16:35.782 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP0/CPU0:Jun 19 21:16:46.760 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:16:46.821 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:16:49.094 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:16:49.094 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:16:49.094 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:16:49.094 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP1/CPU0:Jun 19 21:16:50.278 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:16:50.278 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:16:50.278 : bgp[1039]: [ioct]: Open to 192.168.96.4 delayed 30s (open checks failed)

RP/0/RSP1/CPU0:Jun 19 21:16:58.310 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:16:58.310 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:16:58.310 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:16:58.311 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP0/CPU0:Jun 19 21:17:01.762 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:17:01.823 : bgp[1039]: [iowt]: bgp_io_write_nbr_ver_timer_process: nbr_ver_timer handler: Empty ilist!! : Returning...

RP/0/RSP1/CPU0:Jun 19 21:17:05.478 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:17:05.479 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:17:05.479 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:17:05.479 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

RP/0/RSP1/CPU0:Jun 19 21:17:13.670 : bgp[1039]: [ioct]: Setting context (0x5052a768) for FD 89

RP/0/RSP1/CPU0:Jun 19 21:17:13.671 : bgp[1039]: [ioct]: Using local addr 192.168.96.92 for nbr 192.168.96.4

RP/0/RSP1/CPU0:Jun 19 21:17:13.671 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

RP/0/RSP1/CPU0:Jun 19 21:17:13.671 : bgp[1039]: [ioct]: Passive open from 192.168.96.4 rejected: Open checks failed

Cisco 7206 router config:

!

router bgp 100

bgp router-id 192.168.96.4

no synchronization

bgp log-neighbor-changes

neighbor 192.168.96.92 remote-as 100

neighbor 192.168.96.92 update-source GigabitEthernet0/1.1

no auto-summary

!

7206VXR_G2#sh ip bgp

7206VXR_G2#sh ip bgp sum

7206VXR_G2#sh ip bgp summary

BGP router identifier 192.168.96.4, local AS number 100

BGP table version is 1, main routing table version 1

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

192.168.96.92   4   100       0       0        0    0    0 never    Idle

7206VXR_G2#

[Ivan Krimmel · Accepted solution]

Hi Umit,

it's good that you have debugs attached:

RP/0/RSP1/CPU0:Jun 19 21:17:13.671 : bgp[1039]: [ioct]: Open check failed for 192.168.96.4 - 'No gbl ipv6 addr'

You need an IPv6 address on the peering interface for "address-family ipv6 unicast" - otherwise the BGP session will not come up and stays idle, as open check fails

it is a known issue logged as CSCtq26829:

Regards,

Ivan.

[Umit AYDINLI]

Thank you Ivan,

I removed ipv6 configration so bgp are up and runing now.

[christopherneelybtc2016123]

Just in case someone comes along and encounters this same error like I did.

IOS-XR will not allow bgp-sessions to be established unless the link it is routing over has an ipv6 address configured.

If you have an IOS-Xe configured on the other side the symptoms you will see is neighborship constantly being closed and never reaching past active. If you run the debug you'll see the message above mentioned by OP. You can either do like op and remove the ipv6 address-family alltogether from bgp or you can fix it by enabling an ipv6 add on the interface bgp is routing over to peach the peer.
(i.e interface GigabitEthernet0/0/0/3
ipv4 address 108.3.200.1 255.255.255.252
ipv6 address 1001:db8::1/16 )