Concept Guide

spanning-tree (Global Configuration)
spanning-tree
[forward-time <value> | hello-time <value> | max-age <value> | priority <value> | vlan
range <WORD>
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.
Dell Networking W-Series ArubaOS 6.5.x | Reference Guide spanning-tree (Global Configuration) | 2160