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Cisco Bug: CSCur19322 - ASR1k takes time to respond to peer's BGP OPEN message with GR enabled

Last Modified

Sep 17, 2019

Products (17)

  • Cisco IOS
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901-6CZ-FT-A Router
  • Cisco ASR 901-12C-FT-D Router
  • Cisco ME 3600X-24CX-M Switch
  • Cisco 7600 Series Route Switch Processor 720 with Multilayer Switch Feature Card
  • Cisco 7600 Series Route Switch Processor 720 with 10 Gigabit Ethernet Uplinks
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Known Affected Releases

15.3(3)S3

Description (partial) 

Symptom:
Under certain condition, ASR1k sometimes does not respond to peer's BGP OPEN message.
Finally, BGP session will be correctly established but it takes longer time than normal condition.

Conditions:
-The issue happens during Graceful-Restart process.
-ASR1k is BGP Graceful-Restart helper router.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
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