Linksys SRW208 - Manual (Page 83)

72 Chapter 5: Using the Web-based Utility for Configuration
Spanning Tree Tab - MSTP Properties
WebView Switches
Spanning Tree Tab - MSTP Properties
MSTP provides differing load balancing scenarios. For example, while port A is blocked in one STP instance, the
same port is placed in the Forwarding State in another STP instance. The MSTP Properties screen contains
information for defining global MSTP settings, including region names, MSTP revisions, and maximum hops.
The MSTP Properties screen contains the following fields:
Region Name. Provides a user-defined STP region name.
Revision. Defines unsigned 16-bit number that identifies the revision of the current MST configuration. The
revision number is required as part of the MST configuration. The possible field range 0-65535.
Max Hops. Indicates the total number of hops that occur in a specific region before the BPDU is discarded. Once
the BPDU is discarded, the port information is aged out. The possible field range is 1-40. The field default is 20
hops.
IST Master. Identifies the Spanning Tree Master instance. The IST Master is the specified instance root.
Spanning Tree Tab - 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.
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 0-61440.
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.
Figure 5-50: Spanning Tree - MSTP Properties
Figure 5-51: Spanning Tree - MSTP Instance Settings