Technical Tip: Port changes in Port View but VLAN does not change in switch

Description

This article describes that even though the VLAN fails to change on a Cisco switch, a port change event is generated and updates the Topology port view with the new VLAN ID.  

VLANs on Cisco switches are changed via CLI.  If the switch is using TAC ACS for authentication, and certain commands are denied permission, Port Changes can generate. 

For example, SSH login completes but "command authorization failure" is returned when certain commands are executed.  The CLI still returned values that allows the system to continue the VLAN switching process and not error out.  If the SSH session had been cut short, CLI login was unsuccessful, or if the CLI had returned characters different from what was expected, an event indicating VLAN switch failure would have been generated.

Scope

FortiNAC.

Solution