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Chapter 10: Configuring Spanning Tree
Defining Multiple Spanning Tree
SGE2000/SGE2000P Gigabit Ethernet Switch Reference Guide
Chapter
10
•
Interface State
— Indicates whether the port is enabled or disabled in the specific instance.
2. Click the
Interface Table
button. The
Interface Table Page
opens:
Interface Table Page
The
Interface Table Page
contains the following fields:
•
Instance ID
— Defines the VLAN group to which the interface is assigned.
•
Interface
— Displays the interface for which the MSTP settings are displayed. The possible field
values are:
–
Port
— Specifies the port for which the MSTP settings are displayed.
–
LAG
— Specifies the LAG for which the MSTP settings are displayed.
•
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 root interface.
–
Backup
— Provides a backup path to the designated port path toward the Spanning Tree
leaves. 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.
•
Mode
— Indicates the current Spanning Tree mode. The Spanning Tree mode is selected in the
Global STP
page. The possible field values are:
–
Classic STP
— Indicates that Classic STP is enabled on the device.