Bridge 1X1 Forward Delay - Alcatel-Lucent OmniSwitch 6250 Cli Reference Manual

Distributed Spanning Tree Commands

bridge 1x1 forward delay

Configures the bridge forward delay time value for an individual VLAN instance. This value is the
amount of time, in seconds, that determines how fast a port changes its Spanning Tree state until it reaches
a forwarding state. The forward delay time specifies how long a port stays in the listening and learning
states, which precede the forwarding state.
bridge 1x1 vid forward delay seconds
Syntax Definitions
vid
seconds
Defaults
By default, the bridge forward delay time value is set to 15 seconds.
Platforms Supported
OmniSwitch 6250
Usage Guidelines
•
A low forward delay time can cause temporary loops in the network, because data may get forwarded
before the reconfiguration message has reached all nodes on the network.
•
The forward delay time is also used to age out all dynamic MAC address entries in the forwarding
table (MAC address table) when a topology change occurs.
•
This command is an explicit Spanning Tree command that only applies to the specified VLAN instance
regardless of which operating mode (flat or 1x1) is active on the switch.
•
If the switch is running in the flat mode when this command is used, the specified max age time value
is not active for the specified VLAN instance until the operating mode for the switch is changed to the
1x1 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 1x1 2 forward delay 30
-> bridge 1x1 10 forward delay 4
-> bridge mode 1x1
-> bridge 1x1 255 forward delay 25
-> bridge 1x1 455 forward delay 10
Release History
Release 6.6.1; command was introduced.
OmniSwitch 6250 CLI Reference Guide
An existing VLAN ID number (1–4094).
Forward delay time in seconds (4–30).
November 2009 page 16-45