1060 BigIron RX Series Configuration Guide
53-1002253-01
802.1s Multiple Spanning Tree Protocol
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Displaying MSTP information for a specified instance
The following example displays MSTP information specified for an MSTP instance.
Root FwdDly sec FwdDly interval configured on the root bridge.
Root Hop Cnt Current hop count from the root bridge.
Root Bridge Bridge identifier of the root bridge.
ExtPath Cost The configured path cost on a link connected to this port to an external
MSTP region.
Regional Root Bridge The Regional Root Bridge is the MAC address of the Root Bridge for the
local region.
IntPath Cost The configured path cost on a link connected to this port within the
internal MSTP region.
Designated Bridge The MAC address of the bridge that sent the best BPDU that was
received on this port.
Root Port Port indicating shortest path to root. Set to "Root" if this bridge is the root
bridge.
Port Num The port number of the interface.
Pri The configured priority of the port. The default is 128.
PortPath Cost Configured or auto detected path cost for port.
P2P Mac Indicates if the port is configured with a point-to-point link:
• T – The port is configured in a point-to-point link
• F – The port is not configured in a point-to-point link
Edge Indicates if the port is configured as an operational edge port:
• T – indicates that the port is defined as an edge port.
• F – indicates that the port is not defined as an edge port
Role The current role of the port:
• Master
• Root
• Designated
• Alternate
• Backup
• Disabled
State The port’s current 802.1s state. A port can have one of the following
states:
• Forwarding
• Discarding
• Learning
• Disabled
Designated Cost Port path cost to the root bridge.
Max Hop cnt The maximum hop count configured for this instance.
Root Hop cnt Hop count from the root bridge.
TABLE 171 Output from Show MSTP (Continued)
This field... Displays...
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