Configuration Guide Manual

Brocade TurboIron 24X Series Configuration Guide 255
53-1003053-01
Chapter
14
Configuring Basic Layer 2 Features
In this chapter
•Enabling or disabling the Spanning Tree Protocol (STP) . . . . . . . . . . . . . . . 255
•Changing the MAC age time and disabling MAC address learning . . . . . . 256
•Configuring static MAC entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
•Configuring VLAN-based static MAC entries . . . . . . . . . . . . . . . . . . . . . . . . 259
•Enabling port-based VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
•Defining MAC address filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
•Displaying and modifying system parameter default settings . . . . . . . . . . 265
•Egress buffer thresholds for QoS priorities . . . . . . . . . . . . . . . . . . . . . . . . . 267
•Link Fault Signaling (LFS) for 10G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
•Jumbo frame support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
The procedures in this chapter describe how to configure basic Layer 2 parameters.
TurboIron X Series 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 20, “Configuring IP”.
• For information about the Syslog buffer and messages, refer to Chapter 12, “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 21, “Configuring Spanning Tree Protocol (STP) Related
Features” in this guide.