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Cisco Bug: CSCul96778 - Router crash at bgp_topo_valid_tid

Last Modified

Apr 17, 2019

Products (17)

  • Cisco IOS
  • Cisco 7206 Router
  • Cisco 7301 Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco 7204 Router
  • Cisco 7206VXR Router
  • Cisco 7202 Router
  • Cisco 7600 Series Route Switch Processor 720 with 10 Gigabit Ethernet Uplinks
  • Cisco ME 3600X-24FS-M Switch
  • Cisco 7600 Series Route Switch Processor 720 with Multilayer Switch Feature Card
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Known Affected Releases

15.2(4)S1

Description (partial)

Symptom: A router may crash and reload with BGP related traceback in an extremely rare timing condition while running  "show ip bgp vpnv4 vrf XXXX nei A.A.A.A".
Conditions: While making BGP related changes such as moving the same neighbor with quick operation of "no neighbor x.x.x.x " and then "neighbor x.x.x.x across VRFs. Imediately after this if we type a 'show ip bgp vpnv4 vrf XXXX nei A.A.A.A' ' - on a Cisco router running IOS and BGP, then in extremely rare timing condition the router may crash. The possibility of this to happen increases if there config and unconfig is done from one console and the show operation done from other console.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
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