Technical data

RackSwitch G8124 Command Reference
146
 Chapter 4: Configuration Commands BMD00076, January 2009
Bridge Spanning Tree Configuration
Spanning Tree bridge parameters affect the global STP operation of the switch. STG bridge
parameters include:
 Bridge priority
 Bridge hello time
 Bridge maximum age
 Forwarding delay
Table 4-34 Bridge Spanning Tree Configuration Commands
Command Syntax and Usage
spanning-tree stp {<1-128>} bridge priority {<61440, in steps of 4096>}
Configures the bridge priority. The bridge priority parameter controls which bridge on the network
is the STG root bridge. To make this switch the root bridge, configure the bridge priority lower
than all other switches and bridges on your network. The lower the value, the higher the bridge pri-
ority. The range is 0 to 61440, in steps of 4096 (0, 4096, 8192...), and the default is 32768.
Command mode: Global configuration
spanning-tree stp {<1-128>} bridge hello-time {<1-10>}
Configures the bridge Hello time. The Hello time specifies how often the root bridge transmits a
configuration bridge protocol data unit (BPDU). Any bridge that is not the root bridge uses the root
bridge Hello value. The range is 1 to 10 seconds. The default value is two seconds.
This command does not apply to MSTP.
Command mode: Global configuration
spanning-tree stp {<1-128>} bridge maximum-age {<6-40>}
Configures the bridge maximum age. The maximum age parameter specifies the maximum time
the bridge waits without receiving a configuration bridge protocol data unit before it reconfigures
the STP network. The range is 6 to 40 seconds The default value is 20 seconds.
This command does not apply to MSTP.
Command mode: Global configuration
spanning-tree stp {<1-128>} bridge forward-delay {<4-30>}
Configures the bridge forward delay parameter. The forward delay parameter specifies the amount
of time that a bridge port has to wait before it changes from the discarding state to the learning
state and from the learning state to the forwarding state. The default value is 15 seconds.
This command does not apply to MSTP.
Command mode: Global configuration
show spanning-tree stp {<1-128>} bridge
Displays the current bridge STG parameters.
Command mode: All