Cisco 300 Series Administration Guide

Spanning Tree
Defining MSTP Instance Settings
Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 241
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For those VLANs that are not explicitly mapped to one of the MST instances, the
device automatically maps them to the CIST (Core and Internal Spanning Tree)
instance. The CIST instance is MST instance 0.
To map VLANs to MST Instances:
STEP 1 Click Spanning Tree > VLAN to MSTP Instance.
The VLAN to MSTP Instance page contains the following fields:
• MST Instance ID—All MST instances are displayed.
• VLANs—All VLANs belonging to the MST instance are displayed.
STEP 2 To add a VLAN to an MSTP instance, select the MST instance, and click Edit.
STEP 3 Enter the parameters.
• MST Instance ID—Select the MST instance.
• VLANs—Define the VLANs being mapped to this MST instance.
• Action—Define whether to Add (map) the VLAN to the MST instance or
Remove it.
STEP 4 Click Apply. The MSTP VLAN mappings are defined, and the Running
Configuration file is updated.
Defining MSTP Instance Settings
The MSTP Instance Settings page enables you to configure and view parameters
per MST instance. This is the per-instance equivalent to the Configuring STP
Status and Global Settings.
To enter MSTP instance settings:
STEP 1 Click Spanning Tree > MSTP Instance Settings.
STEP 2 Enter the parameters.
• Instance ID—Select an MST instance to be displayed and defined.

Cisco 300 Series Specifications

General

Model	Cisco 300 Series
Category	Switch
Dimensions	Varies by model
Weight	Varies by model
Power over Ethernet (PoE)	Available on select models
Management	Web-based GUI, SNMP, CLI
VLANs	Up to 256
Security Features	ACLs, 802.1X, Port Security
Humidity	10% to 90% non-condensing
Ports	8, 16, 24, 48