Specifications

Spanning Tree Group
ATX MIB Reference Guide 6-7
dot1dStpPortState {dot1dStpPortEntry 3}
Integer Read-Only
The port’s current state as defined by application of the Spanning Tree Protocol.
This state controls what action a port takes on reception of a frame. If the bridge
has detected a port that is malfunctioning it will place that port into the broken
(6) state. For ports which are disabled (see dot1dStpPortEnable), this object will
have a value of disabled (1).
Values include:
• disabled (1)
• blocking (2)
• listening (3)
• learning (4)
• forwarding (5)
• broken (6)
dot1dStpPortEnable {dot1dStpPortEntry 4}
Integer Read-Write
The enabled/disabled status of the port.
The unit does not change the parameter’s value when processing a SetRequest -
refer to the sprotoBridge parameter in Cabletron’s enterprise-specific MIB for the
SetRequest capabilities.
dot1dStpPortPathCost {dot1dStpPortEntry 5}
Integer Read-Write
The contribution of this port to the path cost of paths towards the spanning tree
root which include this port.
Any value from 0 to 65535 may be specified; specifying a value of 0 will cause
the unit to automatically compute the proper default value.
1
1.
The proper default is the inverse of the media baud rate (e.g., 10 for FDDI, 100 for
Ethernet). The effective value is always returned in the GetResponse. This is useful
primarily for 802.5 Token Ring, where the recommended cost weighting varies for 4 Mbps
rings.