Bridge Spanning Tree Configuration - NEC N8406-023 Command Reference Manual

Bridge Spanning Tree configuration

Spanning tree bridge parameters can be configured for each Spanning Tree Group. STP bridge parameters
include:
Bridge priority
Bridge hello time
Bridge maximum age
Forwarding delay
Current bridge configuration
The following table describes the Bridge Spanning Tree Configuration commands.
Table 110 Bridge Spanning Tree Configuration commands
Command
spanning-tree stp <1-128> bridge
priority <0-65535>
spanning-tree stp <1-128> bridge
hello-time <1-10>
spanning-tree stp <1-128> bridge
maximum-age <6-40>
spanning-tree stp <1-128> bridge
forward-delay <4-30>
show spanning-tree stp <1-128>
bridge
When configuring STP bridge parameters, the following formulas must be used:
2*(fwd-1) > mxage
2*(hello+1) < mxage
Description
Configures the bridge priority. The bridge priority parameter controls
which bridge on the network is the STP 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 priority. The range is 0 to 65535, and the
default is 32768.
RSTP/MSTP: The range is 0 to 61440, in steps of 4096 (0, 4096,
8192...), and the default is 32768.
This command does not apply to MSTP. See the ―Common Internal
Spanning Tree configuration‖ section for more information.
Command mode: Global configuration
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, and the default is 2 seconds.
This command does not apply to MSTP. See the ―Common Internal
Spanning Tree configuration‖ section for more information.
Command mode: Global configuration
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, and the default is 20 seconds.
This command does not apply to MSTP. See the ―Common Internal
Spanning Tree configuration‖ section for more information.
Command mode: Global configuration
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 listening state to the learning state and from
the learning state to the forwarding state. The range is 4 to 30 seconds,
and the default is 15 seconds.
This command does not apply to MSTP. See the ―Common Internal
Spanning Tree configuration‖ section for more information.
Command mode: Global configuration
Displays the current bridge STP parameters.
Command mode: All
N8406-023 1Gb Intelligent L3 Switch Command Reference Guide (ISCLI) 108