25. Spanning Tree
ROX™ v2.2 User Guide
259
RuggedBackbone™ RX5000
status
Synopsis: string - one of the following keywords { none, rootBridge, notDesignatedForAnyLAN,
designatedBridge }
The spanning tree status of the bridge. The status may be root or designated. This field may show
text saying 'not designated for any LAN' if the bridge is not the designated bridge for any of its ports.
Root Priority
Synopsis: integer
Bridge Identifier of the root bridge.
Root MAC
Synopsis: Ethernet MAC address in colon-separated hexadecimal notation
Bridge Identifier of the root bridge.
Bridge Priority
Synopsis: integer
Bridge Identifier of this bridge.
Bridge MAC
Synopsis: Ethernet MAC address in colon-separated hexadecimal notation
Bridge Identifier of this bridge.
Root Port Slot
Synopsis: string - the keyword { --- }
Synopsis: string - one of the following keywords { lm6, lm5, lm4, lm3, lm2, lm1, sm }
Synopsis: string - the keyword { trnk }
If the bridge is designated, this is the slot containing the port that provides connectivity towards the
root bridge of the network.
Root Port Port
Synopsis: integer
If the bridge is designated, this is the port of the slot that provides connectivity towards the root
bridge of the network.
Root Path Cost
Synopsis: unsigned integer
The total cost of the path to the root bridge composed of the sum of the costs of each link in the
path. If custom costs have not been configured. 1Gbps ports will contribute a cost of four, 100 Mbps
ports will contribute 19 and 10 Mbps ports will contribute 100. For the CIST instance of MSTP, this
is an external root path cost, which is the cost of the path from the IST root (i.e. regional root) bridge
to the CST root (i.e. network "global" root) bridge.
Total Topology Changes
Synopsis: unsigned integer
A count of topology changes in the network, as detected on this bridge through link failures or as
signaled from other bridges. Excessively high or rapidly increasing counts signal network problems.
