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Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
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 configure 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 configuration information.
max-age
To maintain configuration 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 that the waits before refreshing configuration
information. The range is from 6 to 40 seconds. The default is 20 seconds.
Defaults 20 seconds
Command Modes CONFIGURATION RSTP (conf-rstp)
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Related
Commands
forward-delay — changes the wait time before RSTP transitions to the Forwarding state.
hello-time — changes the time interval between BPDUs.
edge-port bpdufilter default
To filter transmission of BPDU on port fast enabled interfaces, enable BPDU Filter globally.
Syntax
edge-port bpdufilter default
To disable global bpdu filter default, use the no edge-port bpdufilter default command.
Parameters
priority-value Enter a number as the bridge priority value in increments of 4096. The range is
from 0 to 61440. The default is 32768.
Defaults Disabled
Command Modes CONFIGURATION (conf-rstp)
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
1002 Rapid Spanning Tree Protocol (RSTP)