
Modular L3 Ethernet Switch User’s Guide
113
Select
Bridge > Spanning Tree > Spanning Tree Port Table
. The
Spanning Tree Port Table
opens:
Figure 6- 73. Spanning Tree Port Table window
The
Spanning Tree Port Table
displays the following fields:
Port –
Indicates the port number to which the STP applies.
Priority –
Indicates the priority value of the port. The Priority value can be used
to influence the choice of port when a bridge has two ports connected in a loop.
PortState –
Indicates the current STP state of a port. If enabled
Port State
determines what forwarding action is taken on traffic. If the bridge discovers a
malfunctioning port, the port is placed in the
Broken State
. The possible values
are:
•
Disabled
–
STP is currently disabled on the port. The port forwards
traffic while
learning
MAC addresses.
•
Blocking
–
The port is currently blocked and cannot be used to forward
traffic or learn MAC addresses.
•
Listening
–
The port is currently in the
listening
mode. The port cannot
forward traffic nor can it learn MAC addresses.
•
Learning
–
The port is currently in the learning mode. The port cannot
forward traffic however it can learn new MAC addresses.
•
Forwarding
–
The port is currently in the forwarding mode. The port can
forward traffic and learn new MAC addresses.
•
Broken
–
The port is currently malfunctioning and cannot be used for
forwarding traffic.
Port Enable –
Indicates if the STP is enabled on the port. If the port is disabled,
the PortState is forwarding.
Path Cost –
The amount this port contributes to the Root Path Cost. The Path
Cost can be adjustable to a higher or lower value, and can be used to forward
traffic towards or away from a path being rerouted.
Designated Root –
The Designated Bridge transmits a unique Bridge Identifier as
the
root
in the CMs.
Designated Cost –
The Designated Port path cost of network segments connected
to this port. This value is compared to the Root Path Cost field in received CMs.
Designated Bridge –
Identifies which bridge is the designated bridge for the port.
Port Designated Port –
Identifies the port on the designated bridge.
Summary of Contents for DES-6300
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