HP ProCurve 6120G/XG Programming manual

August 2009
ProCurve Series 6120 Switches
Advanced Traffic Management Guide

Hewlett-Packard Company
8000 Foothills Boulevard, m/s 5551
Roseville, California 95747-5551
www.procurve.com
© Copyright 2009 Hewlett-Packard Development Company,
L.P. The information contained herein is subject to change with-
out notice. All Rights Reserved.
This document contains proprietary information, which is
protected by copyright. No part of this document may be
photocopied, reproduced, or translated into another
language without the prior written consent of Hewlett-
Packard.
Publication Number
5992-5524
August 2009
Applicable Products
HP ProCurve Switch 6120G/XG (498358-B21)
HP ProCurve Switch 6120XG (516733-B21)
Trademark Credits
Microsoft, Windows, and Microsoft Windows NT are US
registered trademarks of Microsoft Corporation.
Disclaimer
The information contained in this document is subject to
change without notice.
HEWLETT-PACKARD COMPANY MAKES NO WARRANTY
OF ANY KIND WITH REGARD TO THIS MATERIAL,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not
be liable for errors contained herein or for incidental or
consequential damages in connection with the furnishing,
performance, or use of this material.
The only warranties for HP products and services are set
forth in the express warranty statements accompanying
such products and services. Nothing herein should be
construed as constituting an additional warranty. HP shall
not be liable for technical or editorial errors or omissions
contained herein.
Hewlett-Packard assumes no responsibility for the use or
reliability of its software on equipment that is not furnished
by Hewlett-Packard.
Warranty
See the Customer Support/Warranty information at
http://www.hp.com/#Support.
A copy of the specific warranty terms applicable to your
Hewlett-Packard products and replacement parts can be
obtained from your HP Sales and Service Office or
authorized dealer.
HP Contact Information
For the name of the nearest HP authorized reseller:
• See the Contact HP worldwide (in English) webpage
(http://welcome.hp.com/country/us/en/wwcontact.html).
For HP technical support:
• In the United States, for contact options see the Contact
HP United States webpage
(http://welcome.hp.com/country/us/en/contact_us.html).
To contact HP by phone:
• Call 1-800-HP-INVENT (1-800-474-6836). This service is
available 24 hours a day, 7 days a week. For continuous
quality improvement, calls may be recorded or monitored.
• If you have purchased a Care Pack (service upgrade),
call 1-800-633-3600. For more information about Care
Packs, refer to the HP website (http://www.hp.com/hps).
• In other locations, see the Contact HP worldwide (in
English) webpage
(http://welcome.hp.com/country/us/en/wwcontact.html).

ii

iii
Contents
Product Documentation
About Your Switch Manual Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Printed Publications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Electronic Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Software Feature Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
1 Getting Started
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Command Syntax Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Command Prompts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Screen Simulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Configuration and Operation Examples . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Sources for More Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Getting Documentation From the Web . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Online Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Menu Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Command Line Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Web Browser Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Need Only a Quick Start? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
IP Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
To Set Up and Install the Switch in Your Network . . . . . . . . . . . . . . . 1-8
Physical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
2 Static Virtual LANs (VLANs)
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

iv
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
General VLAN Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Types of Static VLANs Available in the Switch . . . . . . . . . . . . . . . . . . . 2-5
Port-Based VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Protocol-Based VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Designated VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Static VLAN Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
VLAN Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
VLAN Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Overlapping (Tagged) VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Per-Port Static VLAN Configuration Options . . . . . . . . . . . . . . . . . . . 2-12
VLAN Operating Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
General Steps for Using VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Multiple VLAN Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Single Forwarding Database Operation . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Example of an Unsupported Configuration and How To Correct It 2-19
Multiple Forwarding Database Operation . . . . . . . . . . . . . . . . . . . . . . 2-20
Configuring VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Menu: Configuring Port-Based VLAN Parameters . . . . . . . . . . . . . . . 2-21
To Change VLAN Support Settings . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Adding or Editing VLAN Names . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Adding or Changing a VLAN Port Assignment . . . . . . . . . . . . . . . 2-25
CLI: Configuring Port-Based and Protocol-Based VLAN Parameters 2-27
Web: Viewing and Configuring VLAN Parameters . . . . . . . . . . . . . . . 2-39
802.1Q VLAN Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
Special VLAN Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
VLAN Support and the Default VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
The Primary VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
The Secure Management VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
Using DHCP to Obtain an IP Address . . . . . . . . . . . . . . . . . . . . . . 2-50

v
Deleting the Management VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
Operating Notes for Management VLANs . . . . . . . . . . . . . . . . . . . 2-53
Voice VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54
Operating Rules for Voice VLANs . . . . . . . . . . . . . . . . . . . . . . . . . 2-54
Components of Voice VLAN Operation . . . . . . . . . . . . . . . . . . . . . 2-55
Voice VLAN Access Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-55
Effect of VLANs on Other Switch Features . . . . . . . . . . . . . . . . . . . . 2-55
Spanning Tree Operation with VLANs . . . . . . . . . . . . . . . . . . . . . . . . . 2-55
IP Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56
VLAN MAC Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56
Port Trunks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56
Port Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56
Jumbo Packet Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-57
VLAN Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-57
3 GVRP
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
General Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Per-Port Options for Handling GVRP “Unknown VLANs” . . . . . . . . 3-7
Per-Port Options for Dynamic VLAN Advertising and Joining . . . . 3-9
GVRP and VLAN Access Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Advertisements and Dynamic Joins . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Port-Leave From a Dynamic VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Planning for GVRP Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Configuring GVRP On a Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Menu: Viewing and Configuring GVRP . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
CLI: Viewing and Configuring GVRP . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Web: Viewing and Configuring GVRP . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
GVRP Operating Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

vi
4 Multiple Instance Spanning-Tree Operation
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
802.1s Multiple Spanning Tree Protocol (MSTP) . . . . . . . . . . . . . . . . 4-6
MSTP Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
How MSTP Operates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
MST Regions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Regions, Legacy STP and RSTP Switches, and the
Common Spanning Tree (CST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
MSTP Operation with 802.1Q VLANs . . . . . . . . . . . . . . . . . . . . . . 4-12
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Operating Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
MSTP Compatibility with RSTP or STP . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Configuring MSTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Planning an MSTP Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
MSTP Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Configuring MSTP Operation Mode and Global Settings . . . . . . . . . . 4-21
Configuring MSTP Per-Port Parameters . . . . . . . . . . . . . . . . . . . . . . . 4-26
Configuring Per Port Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Configuring BPDU Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Configuring BPDU Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
Configuring MST Instance Parameters . . . . . . . . . . . . . . . . . . . . . . . . . 4-35
Configuring MST Instance Per-Port Parameters . . . . . . . . . . . . . . . . . 4-37
Enabling or Disabling Spanning Tree Operation . . . . . . . . . . . . . . . . . 4-40
Enabling an Entire MST Region at Once or
Exchanging One Region Configuration for Another . . . . . . . . . . 4-40
MSTP VLAN Configuration Enhancement . . . . . . . . . . . . . . . . . . . . . . 4-42
PreConfiguring VLANs in an MST Instance . . . . . . . . . . . . . . . . . 4-43
Configuring MSTP Instances with the VLAN Range Option . . . . 4-44
Operating Notes for the VLAN Configuration Enhancement . . . 4-46
How to Save Your Current Configuration . . . . . . . . . . . . . . . . . . . 4-47
Displaying MSTP Statistics and Configuration . . . . . . . . . . . . . . . . . 4-49
Displaying Global MSTP Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-50
Displaying Detailed Port Information . . . . . . . . . . . . . . . . . . . . . . 4-52
Displaying Status for a Specific MST Instance . . . . . . . . . . . . . . . 4-53

vii
Displaying the MSTP Configuration . . . . . . . . . . . . . . . . . . . . . . . 4-54
Troubleshooting an MSTP Configuration . . . . . . . . . . . . . . . . . . . . . . 4-58
Displaying the Change History of Root Bridges . . . . . . . . . . . . . . . . . 4-58
Displaying Debug Counters for All MST Instances . . . . . . . . . . . . . . . 4-61
Displaying Debug Counters for One MST Instance . . . . . . . . . . . . . . 4-62
Displaying Debug Counters for Ports in an MST Instance . . . . . . . . . 4-64
Field Descriptions in MSTP Debug Command Output . . . . . . . . . . . . 4-66
Troubleshooting MSTP Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-69
Loop Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70
Configuring Loop Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-71
Viewing Loop Protection Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-72
5 Quality of Service (QoS): Managing Bandwidth More
Effectively
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Classifiers for Prioritizing Outbound Packets . . . . . . . . . . . . . . . . . . . 5-10
Packet Classifiers and Evaluation Order . . . . . . . . . . . . . . . . . . . 5-10
Preparation for Configuring QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Preserving 802.1p Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Steps for Configuring QoS on the Switch . . . . . . . . . . . . . . . . . . . . . . . 5-11
Viewing the QoS Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
No Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Using QoS Classifiers to Configure
Quality of Service for Outbound Traffic . . . . . . . . . . . . . . . . . . . . . . . 5-14
QoS IP Type-of-Service (ToS) Policy and Priority . . . . . . . . . . . . . . . 5-15
Assigning an 802.1p Priority to IPv4 Packets on the Basis
of the ToS Precedence Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Assigning an 802.1p Priority to IPv4 Packets on the
Basis of Incoming DSCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
Assigning a DSCP Policy on the Basis of the DSCP in IPv4
Packets Received from Upstream Devices . . . . . . . . . . . . . . . . . . 5-21
Details of QoS IP Type-of-Service . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

viii
QoS Source-Port Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
Assigning a Priority Based on Source-Port . . . . . . . . . . . . . . . . . . 5-27
Assigning a DSCP Policy Based on the Source-Port . . . . . . . . . . 5-29
Differentiated Services Codepoint (DSCP) Mapping . . . . . . . . . . . 5-33
Default Priority Settings for Selected Codepoints . . . . . . . . . . . . . . . 5-34
Quickly Listing Non-Default Codepoint Settings . . . . . . . . . . . . . 5-34
Notes on Changing a Priority Setting . . . . . . . . . . . . . . . . . . . . . . . . . . 5-36
Error Messages caused by DSCP Policy Changes . . . . . . . . . . . . 5-36
Example of Changing the Priority Setting on a Policy
When One or More Classifiers Are Currently Using the Policy . 5-37
QoS Queue Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40
QoS Operating Notes and Restrictions . . . . . . . . . . . . . . . . . . . . . . . . 5-41
IP Multicast (IGMP) Interaction with QoS . . . . . . . . . . . . . . . . . . . . . . 5-43

ix
Product Documentation
About Your Switch Manual Set
Note For the latest version of switch documentation, please visit any of the follow-
ing websites:
www.procurve.com/manuals
www.hp.com/go/bladesystem/documentation
h18004.www1.hp.com/products/blades/components/c-class-tech-installing.html
Printed Publications
The publication listed below is printed and shipped with your switch. The
latest version is also available in PDF format, as described in the Note at the
top of this page.
■Quick Installation Card—Explains how to prepare for and perform the
physical installation and connect the switch to your network.
Electronic Publications
The latest version of each of the publications listed below is available in PDF
format on the ProCurve Web site, as described in the Note at the top of this
page.
■Installation and Getting Started Guide—Describes how to install hard-
ware, and get started using the switch.
■Management and Configuration Guide—Describes how to configure,
manage, and monitor basic switch operation.
■Advanced Traffic Management Guide—Explains how to configure traffic
management features such as VLANs, MSTP, and QoS.
■Multicast and Routing Guide—Explains how to configure IGMP fea-
tures.
■Access Security Guide—Explains how to configure access security fea-
tures and user authentication on the switch.
■IPv6 Configuration Guide—Describes the IPv6 protocol operations that
are supported on the switch.
■Release Notes—Describe new features, fixes, and enhancements that
become available between revisions of the main product guide.