Command Reference Guide

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NOTE:
The following configurations are unsupported:
PVST+ (default Spanning Tree setting) is NOT interoperable with Cisco Rapid PVST+.
MSTP/RSTP (with mode set to either ‗mstp‘ or ‗rstp‘) is NOT interoperable with Cisco Rapid PVST+.
The following configurations are supported:
PVST+ (default Spanning Tree setting) is interoperable with Cisco PVST+.
MSTP/RSTP (with mode set to ‗mstp‘) is interoperable with Cisco MST/RSTP.
Common Internal Spanning Tree configuration
Command: /cfg/l2/mrst/cist
[Common Internal Spanning Tree Menu]
brg - CIST Bridge parameter menu
port - CIST Port parameter menu
add - Add VLAN(s) to CIST
default - Default Common Internal Spanning Tree and Member parameters
cur - Display current CIST parameters
The Common Internal Spanning Tree (CIST) provides compatibility with different MSTP regions and with
devices running different Spanning Tree instances. It is equivalent to Spanning Tree Group 0.
The following table describes the commands used to configure Common Internal Spanning Tree
Configuration Menu options.
Table 108 Common Internal Spanning Tree Configuration Menu options
Command
Description
brg
Displays the CIST Bridge Menu.
port <port number>
Displays the CIST Port Menu.
add <1-4095>
Adds VLANs to the CIST. Enter one VLAN per line, and press Enter to add the
VLANs.
default
Resets all CIST parameters to their default values.
cur
Displays the current CIST configuration.
CIST bridge configuration
Command: /cfg/l2/mrst/cist/brg
[CIST Bridge Menu]
prior - Set CIST bridge Priority (0-65535)
mxage - Set CIST bridge Max Age (6-40 secs)
fwd - Set CIST bridge Forward Delay (4-30 secs)
cur - Display current CIST bridge parameters
CIST bridge parameters are used only when the switch is in MSTP mode. CIST parameters do not affect
operation of STP/PVST+.
The following table describes the commands used to configure CIST Bridge Configuration Menu options
parameters.
Table 109 CIST Bridge Configuration Menu options
Command
Description
prior <0-65535>
Configures the CIST bridge priority. The bridge priority parameter controls which
bridge on the network is the MSTP root bridge.
To make this switch the root bridge, configure the bridge priority lower than all
other switches and bridges on your network. The lower the value, the higher the
bridge priority. The range is 0 to 65535, and the default is 32768.
This command does not apply to RSTP. See the "Bridge Spanning Tree
configuration" section for more information.
mxage <6-40>
Configures the CIST bridge maximum age. The maximum age parameter
specifies the maximum time the bridge waits without receiving a configuration
bridge protocol data unit before it reconfigures the MSTP network. The range is 6
to 40 seconds, and the default is 20 seconds.
This command does not apply to RSTP. See the "Bridge Spanning Tree
configuration" section for more information.