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Hello Time
Time (in seconds) that the root waits between sending configuration messages. This time is advertised by the root and used by all devices and switches in the active topology of the spanning tree network.
Max Message Age
Time at which the configuration message used by the spanning tree algorithm should be discarded. This time is advertised by the root and used by all devices and switches in the active topology of the spanning tree network.
Forward Delay
Time the root waits between transitions from listening to learning, and from learning to forwarding. This time is advertised by the root and used by all devices and switches in the active topology of the spanning tree network.
CRF
VLAN ID of a CRF belonging to this BRF.
PId
Port ID that is used to determine the role of the port in the spanning tree. The port ID is expressed in the form port priority.port number. When using the IEEE Spanning Tree, priority is configured from the Spanning Tree Configuration screen and port number is the bridge number + an internal number for the CRF.
When using the IBM Spanning Tree, the port ID is constructed from ring number. bridge number.
PCst (Port Cost)
Cost associated with each port. Lower numbers are generally assigned to ports attached to faster media (such as FDX or CrossLinks), and higher numbers are generally assigned to ports attached to slower media.
PSts (Port Status)
Current status of this CRF within the spanning tree. Possible values are:
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DIS (Disabled) |
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BLK (Blocked) | A more effective way to the root bridge exists. |
LSN (Listening) | Removing old address entries. |
LRN (Learning) | Learning new address entries. |
FWD (Forwarding) | This port is the most effective way to the root. |
The rules that define the state of the port are as follows:
SmartStack
