Command Line Interface Reference Guide > The Configuration Menu > /cfg/l2/mrst Multiple Spanning Tree Menu
/cfg/l2/mrst
Multiple Spanning Tree Menu
 
[Multiple Spanning Tree Menu]
cist - Common and Internal Spanning Tree Menu
name - Set MST region name
version - Set Version of this MST region
maxhop - Set Maximum Hop Count for MST (4 - 60)
mode - Spanning Tree Mode
on - Globally turn Multiple Spanning Tree (MSTP/RSTP) ON
off - Globally turn Multiple Spanning Tree (MSTP/RSTP) OFF
cur - Display current MST parameters
 
Multiple Spanning Tree Menu Options 
Command Syntax and Usage
cist
 
Displays the Common and Internal Spanning Tree menu. To view this menu, see /cfg/l2/mrst/cist Common Internal Spanning Tree Menu.
name <NULL|1-32 character region name>
 
Sets the MST region name.
A group of interconnected bridges that share the same attributes is called a Multiple Spanning Tree (MST) region. Each bridge within the region must share the following attributes:
*Alphanumeric name
*Version number
*VLAN-to-STG mapping scheme
version <version number 1-65535>
 
Sets the MST region version.
When enabling MSTP, the region name must be configured, and the default version number set to 1. Each bridge in the region must have the same name, version number, and VLAN mapping.
maxhop <max hops 4-60>
 
Sets the maximum MST hop count.
Default: 20
mode mstp|rstp
 
Sets the spanning tree mode.
The Rapid Spanning Tree Protocol (RSTP) provides rapid convergence of the spanning tree and provides for the fast reconfiguration critical for networks carrying delay-sensitive traffic such as voice and video. RSTP significantly reduces the time to reconfigure the active topology of the network when changes occur to the physical topology or its configuration parameters. RSTP reduces the bridged-LAN topology to a single spanning tree.
In the Multiple Spanning Tree Protocol (MSTP) several VLANs can be mapped to each spanning tree instance. Each spanning tree instance is independent of other instances. MSTP allows frames assigned to different VLANs to follow separate paths, each path based on an independent spanning tree instance. This approach provides multiple forwarding paths for data traffic, enabling load balancing, and reducing the number of spanning tree instances required to support a large number of VLANs.
Default: rstp
on
 
Sets the spanning tree on (Bridge MSTP/RSTP runs normally).
off
 
Sets the spanning tree off (Bridge MSTP/RSTP does not run).
cur
 
Displays the current MST parameters.