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Cisco Bug: CSCvs56346 - template push fails for ipv6 BGP nbr on upgrade scenario from 19.2.097/098

Last Modified

Aug 29, 2020

Products (20)

  • Cisco XE SD-WAN Routers
  • Cisco 4221 Integrated Services Router
  • Cisco ASR 1000 Series IOS XE SD-WAN
  • Cisco 1101 Industrial Integrated Services Router
  • Cisco 4331 Integrated Services Router
  • Cisco 4321 Integrated Services Router
  • Cisco ASR 1002-X Router
  • Cisco 4431 Integrated Services Router
  • Cisco ASR 1001-X Router
  • Cisco 4461 Integrated Services Router
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Known Affected Releases

16.12.2r 16.12.3 17.2 DNAC-Wolverine

Description (partial)

Symptom:
template push fails for ipv6 BGP nbr on upgrade scenario from 19.2.097/098

Conditions:
Ipv6 Only BGP is configured with one neghbor with address family disabled and maximum path is configured.

Config Preview is as follows:

  router bgp 65417
   bgp log-neighbor-changes
   distance bgp 20 200 20
   maximum-paths eibgp 6
   neighbor 2001:10:96:25::4 remote-as 66
   neighbor 2001:10:96:25::4 activate
   neighbor 2001:10:96:25::4 ebgp-multihop 1
   neighbor 2001:10:96:25::4 send-community both
   address-family ipv6 unicast
    exit-address-family
   !
   timers bgp 60 180
  !
Ipv6 configuration generated from 19.2.097 (19.2R/41 build)

router bgp 65417
bgp log-neighbor-changes
distance bgp 20 200 20
maximum-paths eibgp 6
neighbor 2001:10:96:25::4 remote-as 66
neighbor 2001:10:96:25::4 activate
neighbor 2001:10:96:25::4 ebgp-multihop 1
address-family ipv6 unicast
neighbor 2001:10:96:25::4 activate
neighbor 2001:10:96:25::4 send-community both
exit-address-family
!
timers bgp 60 180
 
Template attach fails with the following error:

[3-Feb-2020 21:56:34 UTC] Template push failed after 3 retries.
[3-Feb-2020 21:56:36 UTC] Device failed to process request. Error received from the device is : 
error-type - Application, error-tag - Invalid-value, error-severity - Error, error-message lang="en" - Inconsistent value: Device refused one or more commands:
  no neighbor 2001:10:96:25::4 send-community both
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