D-Link DXS-3227 - xStack Switch - Stackable, Web/Installation Manual

Page: 238 / 424

Configuring Spanning Tree
Defining Multiple Spanning Tree
Page 237
Defining MSTP Instance Settings
MSTP maps VLANs into STP instances. Packets assigned to various VLANs are transmitted along different paths
within
Multiple Spanning Tree Regions (MST Regions). Regions are one or more Multiple Spanning Tree bridges
by which frames can be transmitted. In configuring MSTP, the MST region to which the device belongs is defined.
A configuration consists of the name, revision, and region to which the device belongs.
Network administrators can define the MSTP instance settings using the MSTP Instance Settings Page
.
To define
MSTP instance settings:
1. Click Advanced Setup > Spanning Tree > MSTP > Instance Settings . The MSTP Instance Settings Page
opens:
Figure 163:MSTP Instance Settings Page
The MSTP Instance Settings Page contains the following fields:
•
Instance ID — Specifies the VLAN group to which the interface is assigned.
•
Included VLAN — Maps the selected VLANs to the selected instance. Each VLAN belongs to one instance.
•
Bridge Priority (0-61440, in steps of 4096) — Specifies the selected spanning tree instance device priority.
The field range is 0-61440. The field default is 32768.
•
Designated Root Bridge ID — Indicates the ID of the bridge with the lowest path cost to the instance ID.
•
Root Port — Indicates the selected instance’s root port.
•
Root Path Cost — Indicates the selected instance’s path cost.
•
Bridge ID — Indicates the bridge ID of the selected instance.
•
Remaining Hops — Indicates the number of hops remaining to the next destination.