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

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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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