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294 Configuring Switch Information
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Ty pe
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:
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