/cfg/l2/stg/brg
Bridge Spanning Tree Configuration
 
[Bridge Spanning Tree Menu]
prior - Set bridge Priority [0-65535]
hello - Set bridge Hello Time [1-10 secs]
mxage - Set bridge Max Age (6-40 secs)
fwd - Set bridge Forward Delay (4-30 secs)
aging - Set bridge Aging Time (1-65535 secs, 0 to disable)
cur - Display current bridge parameters
Spanning tree bridge parameters affect the global Alteon STP operation. They include:
*Bridge priority
*Bridge hello time
*Bridge maximum age
*Forwarding delay
*Bridge aging time
When you configure the STP bridge parameters, you must use the following formulas to make your calculations:
*2 X (fwd-1) ³ mxage
*2 X (hello+1) £ mxage
 
Bridge Spanning Tree Menu Options (/cfg/l2/stg/brg) 
Command Syntax and Usage
prior <new bridge priority (0-65535)>
 
Configures the bridge priority.
The bridge priority parameter controls which bridge on the network is the STP root bridge. To make one Alteon 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.
Values: 0 – 65535
Default: 32768
hello <new bridge hello time (1-10 secs)>
 
Configures the bridge hello time.
The hello time specifies how often the root bridge transmits a configuration bridge protocol data unit (BPDU). Any bridge that is not the root bridge uses the root bridge hello value.
Values: 1 – 10 seconds
Default: 2 seconds
mxage <new bridge max age (6-40 secs)>
 
Configures the bridge maximum age.
The maximum age specifies the maximum time the bridge waits without receiving a configuration bridge protocol data unit before it re-configures the STP network.
Values: 6 – 40 seconds
Default: 20 seconds
fwd <new bridge Forward Delay (4-30 secs)>
 
Configures the bridge forward delay parameter.
The forward delay specifies the amount of time that a bridge port has to wait before it changes from the listening state to the learning state and from the learning state to the forwarding state.
Values: 4 – 30 seconds
Default: 15 seconds
aging <new bridge Aging Time (1-65535 secs, 0 to disable)>
 
Configures the forwarding database aging time.
The aging time specifies the amount of time the bridge waits without receiving a packet from a station before removing the station from the forwarding database.
Values: 1 – 65535 seconds
Default: 300 seconds
To disable aging, set the parameter to 0.
cur
 
Displays the current bridge STP parameters.