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Cisco Bug: CSCvs53280 - TCP stuck in CLOSEWAIT when using X25 PVC RBP sessions on ISR 4k

Last Modified

Sep 29, 2020

Products (65)

  • Cisco IOS
  • Cisco Catalyst 9300-48P-A Switch
  • Cisco Catalyst 9800-40 Wireless Controller
  • Cisco Catalyst 9300-48UN-A Switch
  • Cisco Catalyst 9300-48U-A Switch
  • Cisco Catalyst 9300-48UXM-A Switch
  • Cisco Catalyst C9500-32QC Switch
  • Cisco Catalyst 9300-48T-A Switch
  • Cisco Catalyst 9200L-48P-4X Switch
  • Cisco Catalyst IE-3200-8T2S Rugged Switch
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Known Affected Releases


Description (partial)

TCP Session is stuck in CLOSEWAIT state unless manually cleared and forced to re-establish a new TCP Session.

Router is not closing the connection when we a FIN is received from the TCP peer.
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