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Cisco Bug: CSCvs00410 - MKA session up but unable to pass data across link using AES-256-XPN cipher

Last Modified

Oct 22, 2020

Products (66)

  • Cisco Catalyst 9500 Series Switches
  • Cisco Catalyst 9410R Switch
  • Cisco Catalyst 9300-48T-A Switch
  • Cisco Catalyst 9300-48P-A Switch
  • Cisco Catalyst 9400 Supervisor Engine-1XL-Y
  • Cisco Catalyst 9200L-48P-4X Switch
  • Cisco Catalyst 9300-48UN-A Switch
  • Cisco Catalyst 9300-48UXM-A Switch
  • Cisco Catalyst C9500-32QC Switch
  • Cisco Catalyst 9300-48U-A Switch
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Known Affected Releases

Gibraltar-16.11.1

Description (partial)

Symptom:
MKA session is seen as up but unable to pass traffic across the link, for example ping/lldp/CDP

Conditions:
Seen on a Catalyst 9500 connected to another non-Catalyst peer using the gcm-aes-xpn-256 cipher and the catalyst 9500 is not the key-server for the link.

May affect other Catalyst 9000 platforms as well.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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