Configuring Fast Spanning Tree
Page 17-37
Role. The port’s current role as defined by application of the fast spanning tree protocol. The
Role values include:
DISABLED The port has been disabled.
ROOT The Root Port on a Bridge has the best path to the Root Bridge, and
connects the Bridge to the Root Bridge.
DESIGNATED The Designated Port on a Bridge provides an attached LAN the best path
to the Root Bridge, and connects the LAN through the Bridge to the Root
Bridge, forwarding frames between them. (A Designated Port can be in a
Listening, Learning, Forwards, Forwarder, or Forwarding state.)
ALTERNATE The Alternate Port is connected to a LAN with another bridge
functioning as the Designated Bridge. (An Alternate Port may be in either
a Forgetting state or a Blocking state.)
BACKUP The Backup Port is connected to a LAN with another port on the same
Bridge functioning as the Designated Port. (Backup Ports are always in a
Blocking state.)
Frwds. This counter records each instance when the port is in the Forwards state.
Frwdr. This counter records each instance when the port is in the Forwarder state.
Frget. This counter records each instance when the port is in the Forgetting state.
RPs. This counter records each instance when the Root Port is retired.
PPs. This counter records each instance when the Primary Port is retired.
Link Ups. This counter records each instance when the port is linked up.
Primary Port Slot Intf. The slot and interface (port) number of the Primary Port.
Primary Port Service Inst. The service type and instance of the service connected to the
Primary Port.