Spanning tree > mstp instance settings, Spanning tree > mstp interface settings, Chapter 5 – Linksys BUSINESS SERIES SRW224G4 User Manual

Page 55: Advanced configuration

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Chapter 5

Advanced Configuration

48

WebView Switches

Spanning Tree > MSTP Instance Settings

MSTP operation maps VLANs into STP instances. Packets
assigned to various VLANs are transmitted along different
paths within Multiple Spanning Trees Regions (MST
Regions). Regions are one or more Multiple Spanning
Tree bridges by which frames can be transmitted. In
configuring MST, the MST region to which the device
belongs is defined. A configuration consists of the name,
revision, and region to which the device belongs.

Spanning Tree > MSTP Instance Settings

Network Administrators can define MSTP Instances
settings using the MSTP Instance Settings screen.

Instance ID

Defines the VLAN group to which the

interface is assigned.

Included VLAN

Maps the selected VLAN to the selected

instance. Each VLAN belongs to one instance.

Bridge Priority

Specifies the selected spanning tree

instance device priority. The field range is 0–61,440.

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.

Spanning Tree > MSTP Interface Settings

Network Administrators can assign MSTP Interface settings
using the MSTP Interface Settings screen.

Spanning Tree > MSTP Interface Settings

The MSTP Interface Settings screen contains the following
fields:

Instance ID

Lists the MSTP instances configured on the

device. Possible field range is 0–15.

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.

Port State

Indicates whether the port is enabled for the

specific instance.

Type

Indicates if the port is a point-to-point port, or a

port connected to a hub. The possible field values are:

Boundary Port

Indicates the port is a boundary port.

A Boundary port attaches MST bridges to LAN in an
outlying region. 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.

Master Port

Indicates the port is a master port. A

Master port provides connectivity from a MSTP region
to the outlying CIST root.

Internal

Indicates the port is an internal port.

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.

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