Bridge Cist Slot/Port Priority - Alcatel-Lucent OmniSwitch 6250 Cli Reference Manual

Distributed Spanning Tree Commands

bridge cist slot/port priority

Configures the Spanning Tree priority value for a port or an aggregate of ports for the flat mode Common
and Internal Spanning Tree (CIST) instance. The Spanning Tree algorithm uses the port priority value to
determine the most favorable port when a bridge has multiple ports with the same path cost to the root
bridge.
bridge cist {slot/port | logical_port} priority priority
Syntax Definitions
slot/port
logical_port
priority
Defaults
By default, the bridge port priority value is set to 7.
Platforms Supported
OmniSwitch 6250
Usage Guidelines
•
The port priority specifies the value of the priority field contained in the first byte of the Port ID. The
second byte contains the physical switch port number.
•
This command is an explicit Spanning Tree command that only applies to the port priority value for the
flat mode CIST instance regardless 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 port priority 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 4/1 priority 2
-> bridge cist 10 priority 15
-> bridge mode 1x1
-> bridge cist 5/10 priority 1
-> bridge cist 16 priority 15
OmniSwitch 6250 CLI Reference Guide
Enter the slot number for the module and the physical port number on
that module (e.g., 3/1 specifies port 1 on slot 3).
Link aggregate ID number (0–31).
Port priority value (0–15). The lower the number, the higher the
priority.
November 2009 page 16-61