Cisco Catalyst 4500 Series User manual

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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

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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
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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
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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
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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
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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
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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