Reference Guide

1310 | Rapid Spanning Tree Protocol (RSTP)
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Usage
Information
The hello time is encoded in BPDUs in increments of 1/256ths of a second. The
standard minimum hello time in seconds is 1 second, which is encoded as 256.
Millisecond hello times are encoded using values less than 256; the millisecond hello
time equals (x/1000)*256.
When millisecond hellos are configured, the default hello interval of 2 seconds is still
used for edge ports; the millisecond hello interval is not used.
Related
Commands
max-age
c e s
Set the time interval for the RSTP bridge to maintain configuration information
before refreshing that information.
Syntax
max-age seconds
To return to the default values, enter no max-age.
Parameters
Defaults
20 seconds
Command Modes
CONFIGURATION RSTP (conf-rstp)
Command
History
Related
Commands
Version 7.5.1.0 Support added for C-Series
Version 6.2.1.1 Introduced for E-Series
forward-delay Change the wait time before RSTP transitions to the Forwarding state.
max-age Change the wait time before RSTP refreshes protocol configuration information.
max-age
Enter a number of seconds the FTOS waits before refreshing configuration
information.
Range: 6 to 40 seconds
Default: 20 seconds
Version 8.3.19.0 Introduced on S4820T
Version 8.3.7.0 Introduced on S4810
Version 7.6.1.0 Support added for S-Series
Version 7.5.1.0 Support added for C-Series
Version 6.2.1.1 Introduced for E-Series
max-age Change the wait time before RSTP transitions to the Forwarding state.
hello-time Change the time interval between BPDUs.