max-age
Set the time interval for the spanning tree bridge to maintain configuration information before refreshing that 
information.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
max-age seconds
To return to the default values, use the no max-age command.
Parameters
seconds
Enter a number of seconds the FTOS waits before refreshing 
configuration information. The range is 6 to 40. The default is 20 
seconds.
Defaults 20 seconds
Command Modes SPANNING TREE
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 7.7.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
pre-Version 
6.2.1.1
Introduced on the E-Series.
Related 
Commands
forward-delay – changes the wait time before STP transitions to the Forwarding state.
hello-time – changes the time interval between BPDUs.
protocol spanning-tree
Enter SPANNING TREE mode to enable and configure the spanning tree group.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
protocol spanning-tree stp-id
To disable the Spanning Tree group, use the no protocol spanning-tree stp-id 
command.
Parameters
stp-id
Enter zero (0). FTOS supports one spanning tree group, group 0.
Defaults Not configured.
Command Modes CONFIGURATION
1416