Bridge Cist Hello Time - Alcatel-Lucent OmniSwitch 6850-48 Cli Reference Manual

Distributed Spanning Tree Commands

bridge cist hello time

Configures the bridge hello time value for the flat mode Common and Internal Spanning Tree (CIST)
instance. This value is the amount of time, in seconds, between each transmission of a BPDU on any port
that is the Spanning Tree root or is attempting to become the Spanning Tree root.
bridge cist hello time seconds
Syntax Definitions
seconds
Defaults
By default, the bridge hello time value is set to 2 seconds.
Platforms Supported
OmniSwitch 6400, 6850, 6850E, 6855, 9000E
Usage Guidelines
•
Lowering the Hello Time interval improves the robustness of the Spanning Tree Algorithm. Increasing
the Hello Time interval lowers the overhead of the Spanning Tree Algorithm.
•
This command is an explicit Spanning Tree command that only applies to the CIST instance regard-
less of which operating mode (flat or 1x1) or protocol is active on the switch.
•
If the switch is running in 1x1 mode when this command is used, the specified hello time value is not
active for the CIST instance until the operating mode for the switch is changed to the flat mode.
•
Note that when a configuration snapshot is taken of the switch, all Spanning Tree commands are saved
in their explicit format.
Examples
-> bridge mode flat
-> bridge cist hello time 5
-> bridge cist hello time 10
-> bridge mode 1x1
-> bridge cist hello time 5
-> bridge cist hello time 10
Release History
Release 6.1; command introduced.
OmniSwitch CLI Reference Guide
Hello time value in seconds (1–10).
June 2012 page 7-33