Service Manual

Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.8(0.0) Introduced on the S3048-ON and S4048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.2.1.1 Introduced.
Related Commands
vlan bridge-priority — sets the bridge-priority value.
vlan forward-delay — changes the time interval before Dell Networking OS transitions to the forwarding
state.
vlan max-age — changes the time interval before PVST+ refreshes.
show spanning-tree pvst — displays the PVST+ conguration.
vlan max-age
To maintain conguration information before refreshing that information, set the time interval for the PVST+ bridge.
S3048
Syntax
vlan vlan-range max-age seconds
To return to the default, use the no vlan max-age command.
Parameters
vlan vlan-range Enter the keyword vlan then the VLAN numbers. The range is from 1 to 4094.
max-age seconds Enter the keywords max-age then the time interval, in seconds, that Dell
Networking OS waits before refreshing conguration information. The range is
from 6 to 40 seconds. The default is 20 seconds.
Defaults 20 seconds
Command Modes CONFIGURATION (conf-pvst)
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
1150
Per-VLAN Spanning Tree Plus (PVST+)