Preview Tool

Cisco Bug: CSCvu70488 - TCP session is not established between catalyst 3850 and ISE servers

Last Modified

Sep 25, 2020

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

When 3850 is configured to have ISE reachability through loopback interface over vrf, we face switch connectivity issue where TCP Session is not established

The switch initiates the tcp connection with ISE, ISE responds with ACK, then the switch resets the connection.

Reachability through loopback interface over vrf
Two different vrf is configured and leak is observed in 3850 between both vrf
Switch ignores the TCP SYN, ACK packets
Issue seen in 16.6.x code - 16.6.4 and 16.6.7
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.