Users Guide

Version Description
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.3.1.0 Added the milli-second option to the S-Series.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.2.1.1 Introduced on the E-Series.
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 you congure millisecond hellos, the default hello interval of 2 seconds is still used for edge ports; the
millisecond hello interval is not used.
Related Commands
• forward-delay — changes the wait time before RSTP transitions to the Forwarding state.
• max-age — changes the wait time before RSTP refreshes the protocol conguration information.
max-age
To maintain conguration information before refreshing that information, set the time interval for the RSTP bridge.
Syntax
max-age seconds
To return to the default values, use the no max-age command.
Parameters
max-age Enter a number of seconds the Dell Networking OS waits before refreshing
conguration information. The range is from 6 to 40 seconds. The default is 20
seconds.
Defaults 20 seconds
Command Modes CONFIGURATION RSTP (conf-rstp)
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
1366
Rapid Spanning Tree Protocol (RSTP)