Reference Guide

spanning-tree (Global Configuration)
spanning-tree
[forward-time <value> | hello-time <value> | max-age <value> | priority <value> | vlan
range <WORD>
NOTE: RSTP is backward compatible with STP and is enabled by default. For ease of use, this command uses the spanning tree
keyword.
Description
This command is the global configuration for the Rapid Spanning Tree Protocol (RSTP) and Per VLAN Spanning
Tree (PVST+). See spanning-tree (Configuration Interface) for details on the RSTP (config-if) command.
Syntax
Parameter Description Range Default
forward-time
Specifies the time, in seconds, the port spends in
the listening and learning state. During this time, the
port waits to forward data packets.
4-30 15 seconds
hello-time
Specifies the time, in seconds, between each
bridge protocol data unit (BPDU) transmitted by the
root bridge.
1-10 2 seconds
max-age
Specifies the time, in seconds, the root bridge waits
to receive a hello packet before changing the STP
topology.
6-40 20 seconds
priority
Set the priority of a bridge to make it more or less
likely to become the root bridge. The bridge with the
lowest value has the highest priority.
When configuring the priority, remember the
following:
The highest priority bridge is the root bridge.
The highest priority value is 0 (zero).
0-65535 32768
vlan range <WORD>
Enter the keywords vlan range followed by the
range of VLAN iID’s. Separate the VLAN IDs with a
hyphen, comma or both to indicate the range.
For example: 2-3 or 2,4,6 or 2-6,11
— —
Usage Guidelines
This command configures the global RSTP settings on the controller and is backward compatible with past versions
of ArubaOS using STP.
By default, all interfaces and ports on the controller run RSTP as specified in 802.1w and 802.1D. The default RSTP
values can be used for most implementations.
Use the no spanning-tree command to disable RSTP.
Examples
The following command sets the time a port spends in the listening and learning state to 3 seconds:
Dell PowerConnect W-Series ArubaOS 6.2 | Reference Guide spanning-tree (Global Configuration) | 1411