InterVLAN Routing

Lessons Discussion
26

Hi Dan,

There are three requirements for the SVI to be up/up:

  • The VLAN must exist and be active in the VLAN database.
  • At least one interface should be active for the VLAN.
  • That interface has to be in STP forwarding state.
The switchport autostate exclude command on the interface can be used to exclude interfaces from this check. The no autostate command on the vlan can be used to disable all checks completely. Not all IOS versions support these commands though.

Rene

3 Likes