Planet SGSD-1022 User Manual page 164

Forward Transitions
Designated Cost
Designated Bridge
Designated Port
Oper Path Cost
Oper Link Type
Oper Edge Port
Port Role
Trunk Member
- Discarding Port receives STA configuration messages, but does not forward
packets.
- Learning Port has transmitted configuration messages for an interval set
by the Forward Delay parameter without receiving contradictory
information. Port address table is cleared, and the port begins
learning addresses.
- Forwarding Port forwards packets, and continues learning addresses.
The number of times this port has transitioned from the Learning state to the
Forwarding state.
The cost for a packet to travel from this port to the root in the current Spanning
Tree configuration.
The slower the media, the higher the cost.
The bridge priority and MAC address of the device through which this port must
communicate to reach the root of the Spanning Tree.
The port priority and number of the port on the designated bridging device
through which this switch must communicate with the root of the Spanning Tree.
The contribution of this port to the path cost of paths towards the spanning tree
root which include this port.
The operational point-to-point status of the LAN segment attached to this
interface. This parameter is determined by manual configuration or by
auto-detection, as described for Admin Link Type in STA Port Configuration.
This parameter is initialized to the setting for Admin Edge Port in STA Port
Configuration (i.e., true or false), but will be set to false if a BPDU is received,
indicating that another bridge is attached to this port.
Roles are assigned according to whether the port is part of the active topology
connecting the bridge to the root bridge (i.e., root port), connecting a LAN
through the bridge to the root bridge (i.e., designated port), or is the MSTI
regional root (i.e., master port); or is an alternate or backup port that may
provide connectivity if other bridges, bridge ports, or LANs fail or are removed.
The role is set to disabled (i.e., disabled port) if a port has no role within the
spanning tree.
Indicates if a port is a member of a trunk. (STA Port Information only)
164
User's Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P