DescriptionEven though the VLAN fails to change on a Cisco switch, a port change event is generated and updates 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, it is possible for Port
Changes to 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.SolutionEnsure TAC ACS allows all commands to be executed once successful login has completed.