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294 Configuring Switch Information
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Type —
Indicates whether MSTP treats the port as a point-to-point port or a port connected to a
hub and whether the port is internal to the MST region or a boundary port. If the port is a
boundary port, it also indicates whether the device on the other side of the link is working in RSTP
or STP mode
Role —
Indicates the port role assigned by the STP algorithm in order to provide to STP paths.
The possible field values are:
Root
— Provides the lowest cost path to forward packets to root device.
Designated
— Indicates the port or LAG via which the designated device is attached to the
LAN.
Alternate
— Provides an alternate path to the root device from the interface.
Backup
— Provides a backup path to the designated LAN. Backup ports occur only when two
ports are connected in a loop by a point-to-point link. Backup ports also occur when a LAN
has two or more connections connected to a shared segment.
Disabled
— Indicates the port is not participating in the Spanning Tree.
Interface Priority —
Defines the interface priority for the specified instance. The priority range is
0-240 in steps of 16. The default value is 128.
P
ath Cost
— Indicates the port contribution to the Spanning Tree instance. The range should
always be 1-200,000,000.
Default Path Cost
— Indicates that the default path cost is assigned according to the method
selected on the
Spanning Tree Global Settings
page.
Designated Bridge ID —
The bridge ID number that connects the link or shared LAN to the root.
Designated Port ID —
The port ID number on the designated bridge that connects the link or the
shared LAN to the root.
Designated Cost —
Cost of the path from the link or the shared LAN to the root.
Forward Transitions —
Number of times the port changed to the forwarding state.
Remain Hops —
Indicates the number of hops remaining to the next destination.
Viewing the MSTP Interface Table
1
Open the
MSTP Interface Setting
page.
2
Click
Show All
.
The
MSTP Interface Table
page opens: