Cisco ISA550 Administration Manual page 96

Status
Network Status
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Field
Port Role
Path Cost
Priority
Port State
Designated Bridge ID
Designated Port ID
Description
The role assigned to this port
• Root port: The port with the lowest path cost to
the root bridge.
• Designated port: The port with the lowest path
cost on a LAN segment. The LAN segment will
use the designated port to reach the root
bridge.
• Blocked port: The port that is neither a root port
nor a designated port.
The cost of the path to root bridge through this port.
Priority of the port.
The state of the port:
• Disabled: This port is disabled. It will not
transmit or receive any traffic.
• Blocking: This port is enabled but blocked by
STP. It will not transmit or receive any traffic.
• Listening: This port will receive and process
STP bridge protocol data units (BPDUs), but will
not forward any data traffic.
• Learning: This port will start to learn MAC
addresses from the received packets. It will also
receive and process STP BPDUs, but will not
forward any data traffic.
• Forwarding: This port will forward data traffic,
process BPDUs and learn MAC address.
The ID of the designated bridge of the LAN segment.
The designated bridge is used by all the other devices
on the LAN segment to reach the root bridge.
The ID of the designated port of the LAN segment. The
designated port is the port used by all the other
devices on the LAN segment to reach the root bridge.
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