Selecting The Bridge Protocol - Alcatel-Lucent OmniSwitch 6800 Series Network Configuration Manual

Configuring Spanning Tree Parameters
Commands
bridge hello time
bridge cist hello time
bridge 1x1 hello time
bridge max age
bridge cist max age
bridge 1x1 max age
bridge forward delay
bridge cist forward delay
bridge 1x1 forward delay
bridge bpdu-switching
bridge path cost mode
bridge auto-vlan-containment
bridge mode 1x1 pvst+
Note. When a snapshot is taken of the switch configuration, the explicit form of all Spanning Tree
commands is captured. For example, if the bridge protocol for the flat mode instance was changed from
STP to MSTP, then bridge cist protocol mstp is the command syntax captured to reflect this in the snap-
shot file. In addition, explicit commands are captured for both flat and 1x1 mode configurations.
The following sections provide information and procedures for using implicit bridge configuration
commands and also includes explicit command examples.

Selecting the Bridge Protocol

The switch supports four Spanning Tree protocols: STP, RSTP, MSTP, and RRSTP. RSTP is the default
active protocol on the OmniSwitch 6800, 6850, and 9000 switches.
To configure the Spanning Tree protocol for a VLAN instance when the switch is running in the 1x1
mode, enter bridge followed by an existing VLAN ID, then protocol followed by stp or rstp. For exam-
ple, the following command changes the protocol to RSTP for VLAN 455:
OmniSwitch 6800/6850/9000 Network Configuration Guide
Type Used for ...
Implicit Configuring the hello time value for a VLAN instance
when the 1x1 mode is active or the single Spanning Tree
instance when the flat mode is active.
Explicit Configuring the hello time value for the single flat mode
instance.
Explicit Configuring the hello time value for a VLAN instance.
Implicit Configuring the maximum age time value for a VLAN
instance when the 1x1 mode is active or the single Span-
ning Tree instance when the flat mode is active.
Explicit Configuring the maximum age time value for the single
flat mode instance.
Explicit Configuring the maximum age time value for a VLAN
instance.
Implicit Configuring the forward delay time value for a VLAN
instance when the 1x1 mode is active or the single Span-
ning Tree instance when the flat mode is active.
Explicit Configuring the forward delay time value for the single
flat mode instance.
Explicit Configuring the forward delay time value for a VLAN
instance.
N/A Configuring the BPDU switching status for a VLAN.
N/A Configuring the automatic selection of a 16-bit path cost
for STP/RSTP ports and a 32-bit path cost for MSTP ports
or sets all path costs to use a 32-bit value.
N/A Enables or disables Auto VLAN Containment (AVC) for
802.1s instances.
N/A Enables or disables PVST+ mode on the switch.
March 2008
Configuring STP Bridge Parameters
page 7-19