Cisco Catalyst 4500 Series Manuale utente

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Catalyst 4500 Series Switch Cisco IOS

Software Configuration Guide

Cisco IOS XE Release 3.9.xE and Cisco IOS Release 15.2(5)Ex

Last Modified: November 28, 2016

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

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Software Configuration Guide—Release IOS XE 3.9.xE and IOS 15.2(5)Ex

CONTENTS

Audience 67

Organization 67

Conventions 71

Related Documentation 72

Notices 74

Obtaining Documentation and Submitting a Service Request i-76

Product Overview 1-1

Layer 2 Software Features 1-1

802.1Q Tunneling, VLAN Mapping, and Layer 2 Protocol Tunneling 1-2

Cisco IOS Auto Smartport Macros 1-2

Cisco Discovery Protocol 1-2

Cisco Group Management Protocol (CGMP) server 1-3

EtherChannel Bundles 1-3

Ethernet CFM 1-3

Ethernet OAM Protocol 1-3

Flex Links and MAC Address-Table Move Update 1-3

Flexible NetFlow (Supervisor Engine 7-E, 7L-E, and 8-E only) 1-4

Internet Group Management Protocol (IGMP) Snooping 1-4

IPv6 Multicast BSR and BSR Scoped Zone Support 1-5

IPv6 Multicast Listen Discovery (MLD) and Multicast Listen Discovery Snooping 1-6

Jumbo Frames 1-6

Link Aggregation Control Protocol 1-7

Cisco IOS XE IP Application Services Features in Cisco IOS XE 3.1.0SG 1-7

Link Layer Discovery Protocol 1-7

Link State Tracking 1-8

Location Service 1-8

Multiple Spanning Tree 1-8

Per-VLAN Rapid Spanning Tree 1-8

Quality of Service 1-9

Cisco Modular QoS Command-Line-Interface 1-9

Two-Rate Three-Color Policing 1-9

Resilient Ethernet Protocol 1-10

SmartPort Macros 1-10

Contents

Software Configuration Guide—Release IOS XE 3.9.xE and IOS 15.2(5)Ex

Spanning Tree Protocol 1-10

Stateful Switchover 1-10

SVI Autostate 1-11

Unidirectional Link Detection 1-11

VLANs 1-11

Virtual Switching Systems (Catalyst 4500-X and Supervisor Engine 7-E, 7L-E, and 8-E) 1-12

Virtual Switch System Client 1-12

Y.1731 (AIS and RDI) 1-13

Layer 3 Software Features 1-13

Bidirectional Forwarding Detection 1-14

Cisco Express Forwarding 1-14

Device Sensor 1-14

EIGRP Stub Routing 1-14

Enhanced Object Tracking 1-15

GLBP 1-15

Cisco IOS XE IP Application Services Features in Cisco IOS XE 3.1.0SG 1-15

HSRP 1-16

Cisco IOS XE IP Application Services: HSRP Features in Cisco IOS XE 3.1.0SG 1-16

SSO Aware HSRP 1-17

NHRP 1-17

IP Routing Protocols 1-17

BGP 1-17

EIGRP 1-18

IS-IS 1-18

OSPF 1-19

RIP 1-19

In Service Software Upgrade 1-19

IPv6 1-20

Multicast Services 1-20

NSF with SSO 1-21

OSPF for Routed Access 1-21

Policy-Based Routing 1-22

Unicast Reverse Path Forwarding 1-22

Unidirectional Link Routing 1-22

VRF-lite 1-23

Virtual Router Redundancy Protocol 1-23

Management Features 1-23

Cisco Call Home 1-24

Cisco Energy Wise 1-24

Cisco IOS IP Service Level Agreements 1-25

Contents

Software Configuration Guide—Release IOS XE 3.9.xE and IOS 15.2(5)Ex

Cisco Media Services Proxy 1-25

Cisco Medianet AutoQoS 1-26

Cisco Medianet Flow Metadata 1-26

Cisco IOS Mediatrace and Performance Monitor 1-27

Cisco Network Assistant 1-28

Dynamic Host Control Protocol 1-28

Easy Virtual Network 1-28

Embedded CiscoView 1-29

Embedded Event Manager 1-29

Ethernet Management Port 1-29

File System Management (Supervisor Engine 7-E, 7L-E, and 8-E) 1-29

FAT File Management System on Supervisor Engine 6-E, Supervisor Engine 6L-E, Catalyst 4948E,

Catalyst 4948E-F, and Catalyst 4900M 1-30

Forced 10/100 Autonegotiation 1-30

Intelligent Power Management 1-30

MAC Address Notification 1-30

MAC Notify MIB 1-30

NetFlow-lite 1-31

Power over Ethernet 1-31

Secure Shell 1-31

Simple Network Management Protocol 1-31

Smart Install 1-32

SPAN and RSPAN 1-32

Universal Power over Ethernet 1-32

Web Content Coordination Protocol 1-32

Wireshark 1-33

XML-PI 1-33

Security Features 1-33

802.1X Identity-Based Network Security 1-34

Cisco TrustSec MACsec Encryption 1-36

Cisco TrustSec Security Architecture 1-36

Cisco TrustSec Security Groups, SGTs and SGACLs 1-36

Dynamic ARP Inspection 1-37

Dynamic Host Configuration Protocol Snooping 1-37

Flood Blocking 1-37

Hardware-Based Control Plane Policing 1-37

IP Source Guard 1-38

IP Source Guard for Static Hosts 1-38

IPv6 First Hop Security 1-38

IPsec VPN 1-40

Contents

Software Configuration Guide—Release IOS XE 3.9.xE and IOS 15.2(5)Ex

Local Authentication, RADIUS, and TACACS+ Authentication 1-40

Network Admission Control 1-40

Network Security with ACLs 1-41

Port Security 1-41

PPPoE Intermediate Agent 1-41

Session Aware Networking 1-42

Storm Control 1-42

uRPF Strict Mode 1-42

Utilities 1-43

Layer 2 Traceroute 1-43

Time Domain Reflectometry 1-43

Debugging Features 1-43

Web-based Authentication 1-43

1-44

Command-Line Interfaces 2-1

Accessing the Switch CLI 2-2

Accessing the CLI Using the EIA/TIA-232 Console Interface 2-2

Accessing the CLI Through Telnet 2-2

Performing Command-Line Processing 2-3

Performing History Substitution 2-4

About Cisco IOS Command Modes 2-4

Getting a List of Commands and Syntax 2-5

Virtual Console for Standby Supervisor Engine 2-6

ROMMON Command-Line Interface 2-7

Archiving Crashfiles Information 2-8

Displaying a Crash Dump for Supervisor Engine 6-E and 6L-E 2-8

Configuring the Switch for the First Time 3-1

Default Switch Configuration 3-1

Configuring DHCP-Based Autoconfiguration 3-2

About DHCP-Based Autoconfiguration 3-2

DHCP Client Request Process 3-3

Troubleshooting Tips 3-3

Configuring the DHCP Server 3-4

Configuring the TFTP Server 3-4

Configuring the DNS Server 3-5

Configuring the Relay Device 3-5

Obtaining Configuration Files 3-6

Contents

Software Configuration Guide—Release IOS XE 3.9.xE and IOS 15.2(5)Ex

Example Configuration 3-7

Configuring the Switch 3-8

Using Configuration Mode to Configure Your Switch 3-9

Verifying the Running Configuration Settings 3-9

Saving the Running Configuration Settings to Your Start-Up File 3-10

Reviewing the Configuration in NVRAM 3-10

Configuring a Default Gateway 3-11

Configuring a Static Route 3-11

Controlling Access to Privileged EXEC Commands 3-13

Setting or Changing a Static enable Password 3-13

Using the enable password and enable secret Commands 3-14

Setting or Changing a Privileged Password 3-14

Controlling Switch Access with TACACS+ 3-15

Understanding TACACS+ 3-15

TACACS+ Operation 3-17

Configuring TACACS+ 3-17

Displaying the TACACS+ Configuration 3-22

Encrypting Passwords 3-22

Configuring Multiple Privilege Levels 3-23

Setting the Privilege Level for a Command 3-23

Changing the Default Privilege Level for Lines 3-23

Logging In to a Privilege Level 3-24

Exiting a Privilege Level 3-24

Displaying the Password, Access Level, and Privilege Level Configuration 3-24

Recovering a Lost Enable Password 3-25

Modifying the Supervisor Engine Startup Configuration 3-25

Understanding the Supervisor Engine Boot Configuration 3-25

Understanding the ROM Monitor 3-26

Configuring the Software Configuration Register 3-26

Modifying the Boot Field and Using the boot Command 3-28

Modifying the Boot Field 3-29

Modifying the Configuration Register Value for Wireless Mode 3-29

Verifying the Configuration Register Setting 3-30

Specifying the Startup System Image 3-31

Flash Memory Features 3-31

Security Precautions 3-32

Configuring Flash Memory 3-32

Controlling Environment Variables 3-32

Replacing and Rolling-Back Configuration 3-33

Contents

Software Configuration Guide—Release IOS XE 3.9.xE and IOS 15.2(5)Ex

Resetting a Switch to Factory Default Settings 3-34

Administering the Switch 4-1

Managing the System Time and Date 4-1

System Clock 4-2

Understanding Network Time Protocol 4-2

Configuring NTP 4-3

Default NTP Configuration 4-4

Configuring NTP Authentication 4-4

Configuring NTP Associations 4-6

Configuring NTP Broadcast Service 4-7

Configuring NTP Access Restrictions 4-8

Configuring the Source IP Address for NTP Packets 4-10

Displaying the NTP Configuration 4-11

Configuring Time and Date Manually 4-11

Setting the System Clock 4-11

Displaying the Time and Date Configuration 4-12

Configuring the Time Zone 4-12

Configuring Summer Time (Daylight Saving Time) 4-13

Managing Software Licenses Using Permanent Right-To-Use Features 4-14

About a PRTU License 4-15

Benefits of a PRTU License 4-15

Guidelines for the RTU License Model 4-16

Applying a PRTU License 4-16

Activating a PRTU License 4-16

Deactivating a PRTU License 4-17

Displaying Software License Information 4-17

Configuring a System Name and Prompt 4-21

Configuring a System Name 4-22

Understanding DNS 4-22

Default DNS Configuration 4-23

Setting Up DNS 4-23

Displaying the DNS Configuration 4-24

Creating a Banner 4-24

Default Banner Configuration 4-24

Configuring a Message-of-the-Day Login Banner 4-24

Configuring a Login Banner 4-27

Managing the MAC Address Table 4-28

Building the Address Table 4-28

MAC Addresses and VLANs 4-29

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