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Index

IN-24

Software Configuration Guide—Release 12.2(25)EW

OL-6696-01

Table of Contents

Default Chapter3
- Table of Contents3
- Related Documentation23
- Obtaining Documentation25
  - Ordering Documentation25
- Documentation Feedback26
- Obtaining Technical Assistance26
- Obtaining Additional Publications and Information27
- Layer 2 Software Features29
Chapter 1 Product Overview30
- Q and Layer 2 Protocol Tunneling30
- Storm Control30
- DHCP Snooping30
- Etherchannel Bundles31
- IP Source Guard31
- Jumbo Frames31
- Layer 2 Traceroute31
- Pvrst+32
- Spanning Tree Protocol32
- Udld33
- Unidirectional Ethernet33
- Vlans33
- Layer 3 Software Features34
Hsrp34
- IP Routing Protocols34
- Multicast Services37
- Network Security with Acls37
- Policy-Based Routing38
- Qos Features38
- Unidirectional Link Routing38
- VRF-Lite38
- Management and Security Features39
- Accessing the Switch CLI43
  - Accessing the CLI Using the EIA/TIA-232 Console Interface43
  - Accessing the CLI through Telnet44
Chapter 2 Command-Line Interface45
- Performing Command-Line Processing45
- Performing History Substitution45
- Understanding Cisco IOS Command Modes46
- Getting a List of Commands and Syntax47
- ROMMOM Command-Line Interface48
- Default Switch Configuration49
- Configuring DHCP-Based Autoconfiguration50
  - Understanding DHCP-Based Autoconfiguration50
Chapter 3 Configuring the Switch for the First Time51
- DHCP Client Request Process51
- Configuring the DHCP Server51
- Configuring the TFTP Server52
- Configuring the DNS Server53
- Configuring the Relay Device53
- Obtaining Configuration Files54
- Example Configuration55
- Configuring the Switch56
- Controlling Access to Privileged EXEC Commands61
- Recovering a Lost Enable Password66
- Modifying the Supervisor Engine Startup Configuration66
- Overview of Interface Configuration73
- Using the Interface Command74
Chapter 4 Configuring Interface75
- Configuring a Range of Interfaces76
- Defining and Using Interface-Range Macros77
- Configuring Optional Interface Features78
- Understanding Online Insertion and Removal85
- Monitoring and Maintaining the Interface85
CHAPTER 5 Checking Port Status and Connectivity89
- Checking Module Status89
- Checking Interfaces Status90
- C H a P T E R 5 Checking Port Status and Connectivity91
- Checking MAC Addresses91
- Using Telnet91
- Changing the Logout Timer92
- Monitoring User Sessions92
- Using Ping93
  - Understanding How Ping Works93
  - Running Ping94
- Using IP Traceroute95
  - Understanding How IP Traceroute Works95
  - Running IP Traceroute95
- Using Layer 2 Traceroute96
- Configuring ICMP98
CHAPTER 6 Configuring Supervisor Engine Redundancy Using RPR and SSO102
- Understanding Cisco IOS NSF-Awareness Support102
- Understanding Supervisor Engine Redundancy103
- Understanding Supervisor Engine Redundancy Synchronization106
  - RPR Supervisor Engine Configuration Synchronization106
  - SSO Supervisor Engine Configuration Synchronization107
- Supervisor Engine Redundancy Guidelines and Restrictions107
- Configuring Supervisor Engine Redundancy108
  - Configuring Redundancy108
  - Synchronizing the Supervisor Engine Configurations110
- Performing a Manual Switchover111
- Performing a Software Upgrade112
- Manipulating Bootflash on the Redundant Supervisor Engine114
Chapter 7 Environmental Monitoring and Power Management115
- Understanding Environmental Monitoring115
  - Using CLI Commands to Monitor Your Environment116
  - System Alarms116
- Power Management117
Chapter 8 Configuring Power over Ethernet131
- Power Management Modes131
- Configuring Power Consumption for Powered Devices on an Interface133
- Displaying the Operational Status for an Interface136
- Displaying the Poe Consumed by a Module137
CHAPTER 9 Configuring Switches with Web-Based Tools143
- Configuring and Using the Network Assistant143
- Clustering Switches152
  - Understanding Switch Clusters153
  - Using the CLI to Manage Switch Clusters155
- Configuring Embedded Ciscoview Support155
Chapter 10 Understanding and Configuring Vlans161
- Overview of Vlans161
- VLAN Configuration Guidelines and Restrictions163
  - VLAN Ranges163
  - Configurable Normal-Range VLAN Parameters164
- VLAN Default Configuration164
- Configuring Vlans164
CHAPTER 11 Configuring Dynamic VLAN Membership169
- Understanding VMPS169
- Understanding VMPS Clients172
CHAPTER 12 Configuring Layer 2 Ethernet Interfaces 12-1179
- Overview of Layer 2 Ethernet Switching179
- Default Layer 2 Ethernet Interface Configuration182
- Layer 2 Interface Configuration Guidelines and Restrictions183
- Configuring Ethernet Interfaces for Layer 2 Switching183
Chapter 13 Configuring Smartport Macros189
- Understanding Smartport Macros189
- Configuring Smart-Port Macros190
- Displaying Smartport Macros196
Chapter 14 Understanding and Configuring STP197
- Overview of STP197
- Default STP Configuration202
- Configuring STP203
Configuring Stp Features219
Chapter 15 Configuring STP Feature220
- Overview of Root Guard220
- Overview of Loop Guard220
- Overview of Portfast221
- Overview of BPDU Guard222
- Overview of Portfast BPDU Filtering222
- Overview of Uplinkfast223
- Overview of Backbonefast224
- Enabling Root Guard226
- Enabling Loop Guard227
- Enabling Portfast229
- Enabling BPDU Guard230
- Enabling Portfast BPDU Filtering230
- Enabling Uplinkfast232
- Enabling Backbonefast233
CHAPTER 16 Understanding and Configuring Multiple Spanning Trees235
- Overview of MST235
- MST Configuration Restrictions and Guidelines242
- Configuring MST243
CHAPTER 17 Understanding and Configuring Etherchannel251
- Overview of Etherchannel251
- Etherchannel Configuration Guidelines and Restrictions255
- Configuring Etherchannel256
CHAPTER 18 Configuring IGMP Snooping and Filtering265
- Overview of IGMP Snooping265
- Configuring IGMP Snooping268
- Displaying IGMP Snooping Information275
- Configuring IGMP Filtering280
- Displaying IGMP Filtering Configuration284
Chapter 19 Configuring 802.1Q and Layer 2 Protocol Tunneling287
- Understanding 802.1Q Tunneling287
- Configuring 802.1Q Tunneling290
- Understanding Layer 2 Protocol Tunneling293
- Configuring Layer 2 Protocol Tunneling295
- Monitoring and Maintaining Tunneling Status298
Chapter 20 Understanding and Configuring CDP299
- Overview of CDP299
- Configuring CDP300
Chapter 21 Configuring UDLD303
- Overview of UDLD303
- Default UDLD Configuration304
- Configuring UDLD on the Switch304
Chapter 22 Configuring Unidirectional Ethernet307
- Overview of Unidirectional Ethernet307
- Configuring Unidirectional Ethernet307
Chapter 23 Configuring Layer 3 Interfaces311
- Overview of Layer 3 Interfaces311
  - Logical Layer 3 VLAN Interfaces312
  - Physical Layer 3 Interfaces312
- Configuration Guidelines313
- Configuring Logical Layer 3 VLAN Interfaces313
- Configuring Physical Layer 3 Interfaces314
- Configuring Physical Layer 3 Interfaces315
Chapter 24 Configuring Cisco Express Forwarding317
- Overview of CEF317
- Catalyst 4500 Series Switch Implementation of CEF319
- CEF Configuration Restrictions322
- Configuring CEF322
  - Enabling CEF322
  - Configuring Load Balancing for CEF323
- Monitoring and Maintaining CEF324
  - Displaying IP Statistics324
Chapter 25 Understanding and Configuring IP Multicast327
- Overview of IP Multicast327
- Configuring IP Multicast Routing338
- Monitoring and Maintaining IP Multicast Routing341
- Configuration Examples347
Chapter 26 Configuring Policy-Based Routing349
- Overview of Policy-Based Routing349
- Policy-Based Routing Configuration Task List351
- Policy-Based Routing Configuration Examples353
Chapter 27 Understanding and Configuring VTP355
- Configuration Guidelines355
- Overview of VTP355
- VTP Configuration Guidelines and Restrictions359
- VTP Default Configuration359
- Configuring VTP360
Chapter 28 Configuring VRF-Lite365
- Understanding VRF-Lite366
- Default VRF-Lite Configuration367
- VRF-Lite Configuration Guidelines368
- Configuring Vrfs369
- Configuring a VPN Routing Session369
- Configuring BGP PE to CE Routing Sessions370
- VRF-Lite Configuration Example371
- Displaying VRF-Lite Status375
Chapter 29 Configuring Qos377
- Overview of Qos377
- Configuring Auto-Qos392
- Configuring Qos398
Chapter 30 Configuring Voice Interfaces425
- Overview of Voice Interfaces425
- Configuring a Port to Connect to a Cisco 7690 IP Phone426
- Configuring Voice Ports for Voice and Data Traffic426
- Overriding the Cos Priority of Incoming Frames427
- Configuring Inline Power428
Chapter 31 Understanding and Configuring 802.1X Port-Based Authentication429
- Understanding 802.1X Port-Based Authentication429
- How to Configure 802.1X439
- Displaying 802.1X Statistics and Status450
Chapter 32 Configuring Port Security451
- Overview of Port Security451
- Default Port Security Configuration453
- Port Security Guidelines and Restrictions453
- Configuring Port Security453
  - Configuring Port Security on an Interface454
  - Configuring Port Security Aging456
- Displaying Port Security Settings457
Chapter 33 Configuring DHCP Snooping and IP Source Guard459
- Overview of DHCP Snooping459
  - Overview of the DHCP Snooping Database Agent460
- Configuring DHCP Snooping on the Switch461
- Displaying DHCP Snooping Information467
  - Displaying a Binding Table468
  - Displaying the DHCP Snooping Configuration468
- Overview of IP Source Guard468
- Configuring IP Source Guard on the Switch469
  - Configuring IP Source Guard on Private Vlans470
- Displaying IP Source Guard Information471
- Displaying IP Source Binding Information472
Chapter 34 Understanding and Configuring Dynamic ARP Inspection473
- Overview of Dynamic ARP Inspection473
- Configuring Dynamic ARP Inspection477
  - Scenario One: Two Switches Support Dynamic ARP Inspection477
  - Scenario Two: One Switch Supports Dynamic ARP Inspection481
Chapter 35 Configuring Network Security with Acls483
- Understanding Acls483
- Hardware and Software ACL Support487
- TCAM Programming and Acls488
- Layer 4 Operators in Acls489
- Configuring Unicast MAC Address Filtering493
- Configuring Named MAC Extended Acls493
- Configuring VLAN Maps494
- Displaying VLAN Access Map Information501
- Using VLAN Maps with Router Acls501
  - Guidelines for Using Router Acls and VLAN Maps502
  - Examples of Router Acls and VLAN Maps Applied to Vlans502
- Configuring Pacls504
- Using PACL with VLAN Maps and Router Acls508
Chapter 36 Configuring Private Vlans511
- Overview of Pvlans511
  - PVLAN Trunks512
  - Pvlans and VLAN Acl/Qos512
- How to Configure Pvlans513
Chapter 37 Port Unicast and Multicast Flood Blocking523
- Overview of Flood Blocking523
- Configuring Port Blocking523
  - Blocking Flooded Traffic on an Interface524
  - Resuming Normal Forwarding on a Port525
Chapter 38 Configuring Port-Based Traffic Control527
- Overview of Storm Control527
  - Hardware-Based Storm Control Implementation528
  - Software-Based Storm Control Implementation528
- Enabling Storm Control529
- Disabling Storm Control530
- Displaying Storm Control530
- Multicast Storm Control532
  - Multicast Suppression on the WS-X4516 Supervisor Engine532
  - Multicast Suppression on the WS-X4515, WS-X4014, and WS-X4013+ Supervisor Engines533
Chapter 39 Configuring SPAN and RSPAN535
- Overview of SPAN and RSPAN535
- Configuring SPAN540
- CPU Port Sniffing544
- Encapsulation Configuration546
- Ingress Packets546
- Access List Filtering547
  - ACL Configuration Guidelines547
  - Configuring Access List Filtering548
- Packet Type Filtering548
- Configuration Example549
- Configuring RSPAN550
Chapter 40 Configuring Netflow Statistics Collection561
- Overview of Netflow Statistics Collection561
- Configuring Netflow Statistics Collection566
- Netflow Statistics Collection Configuration Example571
- Netflow Configuration Examples573
Appendix577
A Acronyms577
Appendix A Acronym578

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