Defining Mstp Instance Settings; Figure 3-97. Mstp General Page - Alcatel OmniStack LS 6248 User Manual

3
Configuring the Switch
• Revision — An unsigned 16-bit number that identifies the revision of the current
MSTP configuration. The revision number is required as part of the MSTP
configuration. The possible field range is 0-65535.
• Max Hops — Specifies 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
specified instance root.
Web – Click Layer 2, Spanning Tree, MSTP, General. Define the fields and Click
Apply.
CLI –The following is an example of the MSTP general properties commands:
Console(config)#
4-552

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
Note:
To ensure that the MSTI maintains connectivity across the network, you must
configure a related set of bridges with the same MSTI settings.
200
Identifies the Spanning Tree Master instance. The IST Master is the

Figure 3-97. MSTP General Page

spanning-tree mst max-hops
.
10