Owner's Manual

GS700TPS Smart Switch Software Administration Manual
Configuring Switching Settings 4-42
v1.0, June 2009
• Interface – Displays the Port or LAG for which the MSTP settings are displayed.
• Port Priority – Defines the interface priority for the specified instance. The field range is
0-240. The default value is 128.
• Port Path Cost – Indicates the port contribution to the Spanning Tree instance. The range
should always be 1-200,000,000. The field default is 100.
•Port ID – Indicates the port priority and interface number of the source port.
•Port Mode – Indicates MST is enabled on the interface. The possible field values are:
– Enabled – Enables MST on the interface.
– Disabled – Disables MST on the interface.
• Port Forwarding State – Indicates whether the port is enabled for the specific instance.
The possible field values are:
– Disabled — Indicates that STP is currently disabled on the port.
– Blocking — Indicates that the port is currently blocked and cannot forward traffic or
learn MAC addresses.
– Listening — Indicates that the port is in Listening mode. The port cannot forward
traffic nor can it learn MAC addresses.
– Learning — Indicates that the port is in Learning mode. The port cannot forward
traffic, however it can learn new MAC addresses.
– Forwarding — Indicates that the port is in Forwarding mode. The port can forward
traffic and learn new MAC addresses.
– Broken — Indicates that the port is currently in the Broken mode as the bridge
detected a malfunction. The port cannot forward traffic nor can it learn MAC
addresses.
•Port Role – Indicates the port role assigned by the STP algorithm to provide to STP paths.
The possible field values are:
– Root – Provides the lowest cost path to forward packets to the root device.
– Designated – Indicates the port or LAG through which the designated device is
attached to the LAN.
– Alternate – Provides an alternate path to the root device from the root interface.