Cisco ME 3400 Switch Software Configuration Guide, Rel. 12.2(40)

1050 Pages·2007·10.67 MB·English

Cisco ME 3400 Ethernet Access Switch
Software Configuration Guide
Cisco IOS Release 12.2(40)SE
August 2007
Americas Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: [phone]
800 553-NETS (6387)
Fax: [phone]
Text Part Number: OL-9639-04
THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL
STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT
WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT
SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE
OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.
The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public
domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.
NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH
ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED ORIMPLIED, INCLUDING, WITHOUT
LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF
DEALING, USAGE, OR TRADE PRACTICE.
IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING,
WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO
OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
CCVP, the Ciscologo, and the CiscoSquare Bridge logo are trademarks of CiscoSystems, Inc.; Changing the Way We Work, Live, Play, and Learn is a service mark of
CiscoSystems, Inc.; and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the CiscoCertified Internetwork Expert logo,
CiscoIOS, CiscoPress, CiscoSystems, CiscoSystems Capital, the CiscoSystems logo, CiscoUnity, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step,
Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study,
LightStream, Linksys, MeetingPlace, MGX, Networking Academy, Network Registrar, Packet, PIX, ProConnect, ScriptShare, SMARTnet, StackWise, The Fastest Way to
Increase Your Internet Quotient, and TransPath are registered trademarks of CiscoSystems, Inc. and/or its affiliates in the United States and certain other countries.
All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship
between Cisco and any other company. (0705R)
Cisco ME 3400 EthernetAccessSwitch SoftwareConfigurationGuide
© 2006-2007 Cisco Systems, Inc. All rights reserved.
C O N T E N T S
Preface xxxvii
Audience xxxvii
Purpose xxxvii
Conventions xxxvii
Related Publications xxxviii
Obtaining Documentation, Obtaining Support, and Security Guidelines xxxix
CHAPTER 1 Overview 1-1
Features 1-1
Performance Features 1-2
Management Options 1-3
Manageability Features 1-3
Availability Features 1-4
VLAN Features 1-5
Security Features 1-6
Subscriber Security 1-6
Switch Security 1-6
Network Security 1-7
Quality of Service and Class of Service Features 1-7
Layer 2 Virtual Private Network Services 1-8
Layer3 Features 1-8
Layer 3 VPN Services 1-9
Monitoring Features 1-9
Default Settings After Initial Switch Configuration 1-10
Network Configuration Examples 1-13
Multidwelling or Ethernet-to-the-Subscriber Network 1-13
Layer 2 VPN Application 1-14
Multi-VRF CE Application 1-15
Where to Go Next 1-16
Cisco ME 3400 EthernetAccessSwitch SoftwareConfigurationGuide
OL-9639-04 iii
Contents

CHAPTER 2 Using the Command-Line Interface 2-1
Understanding Command Modes 2-1
Understanding the Help System 2-3
Understanding Abbreviated Commands 2-3
Understanding no and default Forms of Commands 2-4
Understanding CLI Error Messages 2-4
Using Command History 2-4
Changing the Command History Buffer Size 2-5
Recalling Commands 2-5
Disabling the Command History Feature 2-5
Using Editing Features 2-6
Enabling and Disabling Editing Features 2-6
Editing Commands through Keystrokes 2-6
Editing Command Lines that Wrap 2-8
Searching and Filtering Output of show and more Commands 2-8
Accessing the CLI 2-9
Accessing the CLI through a Console Connection or through Telnet 2-9
CHAPTER 3 Assigning the Switch IP Address and Default Gateway 3-1
Understanding the Boot Process 3-1
Assigning Switch Information 3-2
Default Switch Information 3-3
Understanding DHCP-Based Autoconfiguration 3-3
DHCP Client Request Process 3-3
Configuring DHCP-Based Autoconfiguration 3-5
DHCP Server Configuration Guidelines 3-5
Configuring the TFTP Server 3-5
Configuring the DNS 3-6
Configuring the Relay Device 3-6
Obtaining Configuration Files 3-7
Example Configuration 3-8
Manually Assigning IP Information 3-9
Checking and Saving the Running Configuration 3-10
Cisco ME 3400 EthernetAccessSwitch SoftwareConfigurationGuide
iv OL-9639-04
Contents

Modifying the Startup Configuration 3-12
Default Boot Configuration 3-13
Automatically Downloading a Configuration File 3-13
Specifying the Filename to Read and Write the System Configuration 3-13
Booting Manually 3-14
Booting a Specific Software Image 3-14
Controlling Environment Variables 3-15
Scheduling a Reload of the Software Image 3-16
Configuring a Scheduled Reload 3-17
Displaying Scheduled Reload Information 3-18
CHAPTER 4 Configuring Cisco IOS CNS Agents 4-1
Understanding Cisco Configuration Engine Software 4-1
Configuration Service 4-2
Event Service 4-3
NameSpace Mapper 4-3
What You Should Know About the CNS IDs and Device Hostnames 4-3
ConfigID 4-3
DeviceID 4-4
Hostname and DeviceID 4-4
Using Hostname, DeviceID, and ConfigID 4-4
Understanding Cisco IOS Agents 4-5
Initial Configuration 4-5
Incremental (Partial) Configuration 4-6
Synchronized Configuration 4-6
Configuring Cisco IOS Agents 4-6
Enabling Automated CNS Configuration 4-6
Enabling the CNS Event Agent 4-8
Enabling the Cisco IOS CNS Agent 4-9
Enabling an Initial Configuration 4-9
Enabling a Partial Configuration 4-11
Upgrading Devices with Cisco IOS Image Agent 4-12
Prerequisites for the CNS Image Agent 4-12
Restrictions for the CNS Image Agent 4-12
Displaying CNS Configuration 4-13
Cisco ME 3400 EthernetAccessSwitch SoftwareConfigurationGuide
OL-9639-04 v
Contents

CHAPTER 5 Administering the Switch 5-1
Managing the System Time and Date 5-1
Understanding the System Clock 5-2
Understanding Network Time Protocol 5-2
Configuring NTP 5-4
Default NTP Configuration 5-4
Configuring NTP Authentication 5-5
Configuring NTP Associations 5-6
Configuring NTP Broadcast Service 5-7
Configuring NTP Access Restrictions 5-8
Configuring the Source IP Address for NTP Packets 5-10
Displaying the NTP Configuration 5-11
Configuring Time and Date Manually 5-11
Setting the System Clock 5-11
Displaying the Time and Date Configuration 5-12
Configuring the Time Zone 5-12
Configuring Summer Time (Daylight Saving Time) 5-13
Configuring a System Name and Prompt 5-14
Default System Name and Prompt Configuration 5-15
Configuring a System Name 5-15
Understanding DNS 5-15
Default DNS Configuration 5-16
Setting Up DNS 5-16
Displaying the DNS Configuration 5-17
Creating a Banner 5-17
Default Banner Configuration 5-17
Configuring a Message-of-the-Day Login Banner 5-18
Configuring a Login Banner 5-19
Suppressing the Power-Supply Alarm on an ME 3400G-12CS Switch 5-19
Managing the MAC Address Table 5-20
Building the Address Table 5-21
MAC Addresses and VLANs 5-21
Default MAC Address Table Configuration 5-22
Changing the Address Aging Time 5-22
Removing Dynamic Address Entries 5-23
Configuring MAC Address Notification Traps 5-23
Adding and Removing Static Address Entries 5-25
Configuring Unicast MAC Address Filtering 5-26
Cisco ME 3400 EthernetAccessSwitch SoftwareConfigurationGuide
vi OL-9639-04
Contents

Disabling MAC Address Learning on a VLAN 5-27
Displaying Address Table Entries 5-28
Managing the ARP Table 5-29
CHAPTER 6 Configuring SDM Templates 6-1
Understanding the SDM Templates 6-1
Configuring the Switch SDM Template 6-2
Default SDM Template 6-2
SDM Template Configuration Guidelines 6-2
Setting the SDM Template 6-3
Displaying the SDM Templates 6-4
CHAPTER 7 Configuring Switch-Based Authentication 7-1
Preventing Unauthorized Access to Your Switch 7-1
Protecting Access to Privileged EXEC Commands 7-2
Default Password and Privilege Level Configuration 7-2
Setting or Changing a Static Enable Password 7-3
Protecting Enable and Enable Secret Passwords with Encryption 7-4
Disabling Password Recovery 7-5
Setting a Telnet Password for a Terminal Line 7-6
Configuring Username and Password Pairs 7-7
Configuring Multiple Privilege Levels 7-8
Setting the Privilege Level for a Command 7-8
Changing the Default Privilege Level for Lines 7-9
Logging into and Exiting a Privilege Level 7-10
Controlling Switch Access with TACACS+ 7-10
Understanding TACACS+ 7-10
TACACS+ Operation 7-12
Configuring TACACS+ 7-13
Default TACACS+ Configuration 7-13
Identifying the TACACS+ Server Host and Setting the Authentication Key 7-13
Configuring TACACS+ Login Authentication 7-14
Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services 7-16
Starting TACACS+ Accounting 7-17
Displaying the TACACS+ Configuration 7-17
Controlling Switch Access with RADIUS 7-18
Understanding RADIUS 7-18
RADIUS Operation 7-19
Cisco ME 3400 EthernetAccessSwitch SoftwareConfigurationGuide
OL-9639-04 vii
Contents

Configuring RADIUS 7-20
Default RADIUS Configuration 7-20
Identifying the RADIUS Server Host 7-20
Configuring RADIUS Login Authentication 7-23
Defining AAA Server Groups 7-25
Configuring RADIUS Authorization for User Privileged Access and Network Services 7-27
Starting RADIUS Accounting 7-28
Configuring Settings for All RADIUS Servers 7-29
Configuring the Switch to Use Vendor-Specific RADIUS Attributes 7-29
Configuring the Switch for Vendor-Proprietary RADIUS Server Communication 7-31
Displaying the RADIUS Configuration 7-31
Controlling Switch Access with Kerberos 7-32
Understanding Kerberos 7-32
Kerberos Operation 7-34
Authenticating to a Boundary Switch 7-35
Obtaining a TGT from a KDC 7-35
Authenticating to Network Services 7-35
Configuring Kerberos 7-36
Configuring the Switch for Local Authentication and Authorization 7-36
Configuring the Switch for Secure Shell 7-37
Understanding SSH 7-38
SSH Servers, Integrated Clients, and Supported Versions 7-38
Limitations 7-38
Configuring SSH 7-39
Configuration Guidelines 7-39
Setting Up the Switch to Run SSH 7-39
Configuring the SSH Server 7-40
Displaying the SSH Configuration and Status 7-41
Configuring the Switch for Secure Copy Protocol 7-41
Information About Secure Copy 7-42
CHAPTER 8 Configuring IEEE 802.1x Port-Based Authentication 8-1
Understanding IEEE 802.1x Port-Based Authentication 8-1
Device Roles 8-2
Authentication Initiation and Message Exchange 8-3
Ports in Authorized and Unauthorized States 8-4
IEEE 802.1x Accounting 8-5
IEEE 802.1x Accounting Attribute-Value Pairs 8-5
IEEE 802.1x Host Mode 8-6
Cisco ME 3400 EthernetAccessSwitch SoftwareConfigurationGuide
viii OL-9639-04
Contents

Using IEEE 802.1x with Port Security 8-7
Using IEEE 802.1x with VLAN Assignment 8-8
Configuring IEEE 802.1x Authentication 8-9
Default IEEE 802.1x Configuration 8-9
IEEE 802.1x Configuration Guidelines 8-10
Configuring IEEE 802.1x Authentication 8-11
Configuring the Switch-to-RADIUS-Server Communication 8-12
Configuring Periodic Re-Authentication 8-13
Manually Re-Authenticating a Client Connected to a Port 8-14
Changing the Quiet Period 8-14
Changing the Switch-to-Client Retransmission Time 8-15
Setting the Switch-to-Client Frame-Retransmission Number 8-15
Setting the Re-Authentication Number 8-16
Configuring the Host Mode 8-17
Resetting the IEEE 802.1x Configuration to the Default Values 8-17
Configuring IEEE 802.1x Accounting 8-18
Displaying IEEE 802.1x Statistics and Status 8-19
CHAPTER 9 Configuring Interfaces 9-1
Understanding Interface Types 9-1
UNI and NNI Ports 9-2
Port-Based VLANs 9-2
Switch Ports 9-3
Access Ports 9-3
Trunk Ports 9-4
Tunnel Ports 9-4
Routed Ports 9-4
Switch Virtual Interfaces 9-5
EtherChannel Port Groups 9-6
Dual-Purpose Ports 9-6
Connecting Interfaces 9-6
Using Interface Configuration Mode 9-7
Procedures for Configuring Interfaces 9-8
Configuring a Range of Interfaces 9-8
Configuring and Using Interface Range Macros 9-10
Configuring Ethernet Interfaces 9-12
Default Ethernet Interface Configuration 9-12
Configuring User Network and Network Node Interfaces 9-14
Cisco ME 3400 EthernetAccessSwitch SoftwareConfigurationGuide
OL-9639-04 ix
Contents

Configuring Interface Speed and Duplex Mode 9-15
Speed and Duplex Configuration Guidelines 9-15
Setting the Interface Speed and Duplex Parameters 9-16
Configuring a Dual-Purpose Port 9-17
Configuring IEEE 802.3x Flow Control 9-19
Configuring Auto-MDIX on an Interface 9-20
Adding a Description for an Interface 9-21
Configuring Layer 3 Interfaces 9-22
Configuring the System MTU 9-23
Monitoring and Maintaining the Interfaces 9-25
Monitoring Interface Status 9-25
Clearing and Resetting Interfaces and Counters 9-26
Shutting Down and Restarting the Interface 9-27
CHAPTER 10 Configuring Command Macros 10-1
Understanding Command Macros 10-1
Configuring Command Macros 10-2
Default Command Macro Configuration 10-2
Command Macro Configuration Guidelines 10-2
Creating Command Macros 10-3
Applying Command Macros 10-4
Displaying Command Macros 10-5
CHAPTER 11 Configuring VLANs 11-1
Understanding VLANs 11-1
Supported VLANs 11-3
Normal-Range VLANs 11-3
Extended-Range VLANs 11-4
VLAN Port Membership Modes 11-4
UNI VLANs 11-5
Creating and Modifying VLANs 11-6
Default Ethernet VLAN Configuration 11-7
VLAN Configuration Guidelines 11-8
Creating or Modifying an Ethernet VLAN 11-9
Assigning Static-Access Ports to a VLAN 11-10
Creating an Extended-Range VLAN with an Internal VLAN ID 11-11
Configuring UNI VLANs 11-12
Configuration Guidelines 11-12
Configuring UNI VLANs 11-13
Cisco ME 3400 EthernetAccessSwitch SoftwareConfigurationGuide
x OL-9639-04