Configuring Spanning Tree Parameters Configuring STP Bridge Parameters
OmniSwitch 6800/6850/9000 Network Configuration Guide March 2008 page 7-19
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:
bridge hello time 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.
bridge cist hello time Explicit Configuring the hello time value for the single flat mode
instance.
bridge 1x1 hello time Explicit Configuring the hello time value for a VLAN instance.
bridge max age 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.
bridge cist max age Explicit Configuring the maximum age time value for the single
flat mode instance.
bridge 1x1 max age Explicit Configuring the maximum age time value for a VLAN
instance.
bridge forward delay 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.
bridge cist forward delay Explicit Configuring the forward delay time value for the single
flat mode instance.
bridge 1x1 forward delay Explicit Configuring the forward delay time value for a VLAN
instance.
bridge bpdu-switching N/A Configuring the BPDU switching status for a VLAN.
bridge path cost mode 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.
bridge auto-vlan-containment N/A Enables or disables Auto VLAN Containment (AVC) for
802.1s instances.
bridge mode 1x1 pvst+ N/A Enables or disables PVST+ mode on the switch.
Commands Type Used for ...
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