Administrator Guide

Defaults Enabled (that is, the spanning tree protocol is disabled.)
Command Modes SPANNING TREE
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.10(0.0) Introduced on the S6100–ON.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
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.
7.7.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.2.1.1 Introduced on the E-Series.
Related Commands
protocol spanning-tree — enter SPANNING TREE mode on the switch.
forward-delay
The amount of time the interface waits in the Listening state and the Learning state before transitioning to the Forwarding state.
Syntax
forward-delay seconds
To return to the default setting, use the no forward-delay command.
Parameters
seconds Enter the number of seconds the Dell Networking OS waits before transitioning STP to
the Forwarding state. The range is from 4 to 30. The default is 15 seconds.
Defaults 15 seconds
Command Modes SPANNING TREE
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.10(0.0) Introduced on the S6100–ON.
9.8(1.0) Introduced on the Z9100–ON.
Spanning Tree Protocol (STP) 1561