Avaya P580 User Manual page 204

Chapter 7
CLI Command
7-16
Table 7-4. Spanning Tree Bridge Port Information
Field
Role
State
Designated Root
Designated Cost
Designated Bridge
Designated Port
Fwd Trans
Protocol
Use the show spantree port {802.1D | vlan {<vlan-id> | name <vlan-
name>}} command to view information about Spanning Tree bridge ports.
User Guide for the Avaya P580 and P882 Multiservice Switches, v6.0
Explanation
The current role of the port.
The options are:
• Root
• Designated
• Alternate
• Backup
• Disabled
For information about each of these roles, see
RSTP Achieves Rapid Recovery."
Current bridging state of the port.
The options are:
• Discarding — The port is either disabled,
blocking or listening.
• Learning — The port is learning new MAC
addresses, but not yet forwarding traffic.
• Forwarding — The port has been selected by
Spanning Tree to forward traffic and is
forwarding traffic currently.
Root bridge for this spanning tree.
The path cost to the designated root of the segment that
is connected to this port.
ID of the designated bridge for this segment.
ID of the designated port on the designated bridge for
this segment.
For information about each of these roles, see
RSTP Achieves Rapid Recovery."
Number of times that this port has changed from
discarding state to forwarding state.
Type of BPDUs that the port is transmitting (RSTP or
STP). If the switch is running RSTP, and this field
displays STP, the port has detected the presence of
bridges running STP and is operating in common-
spanning-tree mode.
"How
"How
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