Bridge Max Age - Alcatel-Lucent OmniSwitch 6850-48 Cli Reference Manual

Distributed Spanning Tree Commands

bridge max age

Configures the Spanning Tree bridge max age time for the flat mode Common and Internal Spanning Tree
(CIST) instance or for a 1x1 mode VLAN instance. This value is the amount of time, in seconds, that
Spanning Tree information learned from the network on any port is retained. When this information has
aged beyond the max age value, the information is discarded.
bridge [instance] max age seconds
Syntax Definitions
instance
seconds
Defaults
By default, the bridge max age time value is set to 20 seconds.
parameter
instance
Platforms Supported
OmniSwitch 6400, 6850, 6850E, 6855, 9000E
Usage Guidelines
•
A low max age time causes the Spanning Tree Algorithm to reconfigure more often.
•
Specifying an instance number with this command when the switch is running in the 1x1 Spanning
Tree mode implies a VLAN ID and configures the max age value for the associated VLAN instance.
•
To configure the max age value for the flat mode CIST instance when the switch is running in either
the flat or 1x1 mode, do not specify an instance number. The CIST is the instance configured by
default with this command.
•
If the switch is running in the flat mode and STP or RSTP is the active protocol, entering 1 to specify
the CIST instance is optional. If MSTP is the active protocol, however, entering 1 for the instance
number is not accepted.
•
Note that for Multiple Spanning Tree Instances (MSTI), the max age value is inherited from the CIST
instance and is not a configurable parameter.
Examples
-> bridge mode flat
-> bridge max age 40
-> bridge mode 1x1
-> bridge 255 max age 40
-> bridge max age 10
OmniSwitch CLI Reference Guide
The flat mode CIST instance or an existing VLAN ID number (1–4094).
Max age time in seconds (6–40).
default
flat mode instance
June 2012 page 7-37