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Cisco Bug: CSCvt94577 - Incorrect CEF entry for LISP action signal-fwd

Last Modified

Sep 10, 2020

Products (32)

  • Cisco Catalyst 9300 Series Switches
  • Cisco Catalyst 9300-48P-A Switch
  • Cisco Catalyst 9300-48UXM-A Switch
  • Cisco Catalyst 9400 Supervisor Engine-1XL-Y
  • Cisco Catalyst 9300-48U-A Switch
  • Cisco Catalyst 9300-48UN-A Switch
  • Cisco Catalyst 9300-48T-A Switch
  • Cisco Catalyst C9500-16X-E Switch
  • Cisco Catalyst C9500-24Q-A Switch
  • Cisco Catalyst C9500-40X-A Switch
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Known Affected Releases

16.12.1s 16.12.3

Description (partial)

Packet can be looped between two SDA default borders each pointing to one another

1) CEF entry on affected SDA Border (show ip cef ... internal) shows 'fwd action signal-fwd' 
2) LISP map-cache shows negative reply
2) LISP map-server shows proper edge node as a locator for affected prefix
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