Quick Reference Guide

PowerConnect B-Series TI24X Configuration Guide 175
53-1002269-02
Chapter
7
Configuring Basic Layer 2 Features
The procedures in this chapter describe how to configure basic Layer 2 parameters.
PowerConnect devices are configured at the factory with default parameters that allow you to begin
using the basic features of the system immediately. However, many of the advanced features such
as VLANs or routing protocols for the device must first be enabled at the system (global) level
before they can be configured. If you use the Command Line Interface (CLI) to configure system
parameters, you can find these system level parameters at the Global CONFIG level of the CLI.
NOTES:
• Before assigning or modifying any router parameters, you must assign the IP subnet
(interface) addresses for each port.
• For information about configuring IP addresses, DNS resolver, DHCP assist, and other
IP-related parameters, refer to Chapter 21, “Configuring IP”.
• For information about the Syslog buffer and messages, refer to Chapter 34, “Using
Syslog”.
Enabling or disabling the Spanning Tree Protocol (STP)
STP (IEEE 802.1D bridge protocol) is supported on all devices. STP detects and eliminates logical
loops in the network. STP also ensures that the least cost path is taken when multiple paths exist
between ports or VLANs. If the selected path fails, STP searches for and then establishes an
alternate path to prevent or limit retransmission of data.
NOTE
This section provides instructions for enabling and disabling STP. For configuration procedures and
more information about STP, refer to Chapter 6, “Configuring Spanning Tree Protocol (STP) Related
Features” in this guide.
STP must be enabled at the system level to allow assignment of this capability on the VLAN level.
On devices running Layer 2 code, STP is enabled by default. On devices running Layer 3 code, STP
is disabled by default.
To enable STP for all ports on a device, enter the following command.
PowerConnect(config)#spanning tree
Syntax: [no] spanning-tree
You can also enable and disable spanning tree on a port-based VLAN and on an individual port
basis, and enable advanced STP features. Refer to Chapter 6, “Configuring Spanning Tree Protocol
(STP) Related Features”.
Modifying STP bridge and port parameters
You can modify the following STP Parameters: