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IC-23

Cisco IOS Interface Configuration Guide

Configuring LAN Interfaces

Use the information in this chapter to configure LAN interfaces supported on Cisco routers and access

servers.

This chapter describes the processes for configuring LAN interfaces in the following sections:

• Configuring an Ethernet or Fast Ethernet Interface

• Configuring Fast EtherChannel

• Configuring a Fiber Distributed Data Interface

• Configuring a Hub Interface

• Configuring a LAN Extender Interface

• Configuring a Token Ring Interface

For examples of configuration tasks, see the “LAN Interface Configuration Examples” section.

For hardware technical descriptions and information about installing interfaces, refer to the hardware

installation and configuration publication for your product. For a complete description of the LAN

interface commands used in this chapter, refer to the “Interface Commands” chapter of the Cisco IOS

Interface Command Reference. To locate documentation of other commands that appear in this chapter,

use the command reference master index or search online.

Configuring an Ethernet or Fast Ethernet Interface

Cisco supports both 10-Mbps Ethernet and 100-Mbps Fast Ethernet.

Support for the 10-Mbps and 100-Mbps Ethernet interface is supplied on various Ethernet network

interface cards or systems.

The Fast Ethernet NP-1FE module, for example, provides the following benefits:

• VLAN routing—Virtual LAN (VLAN) support enables network managers to group users logically

rather than by physical location. The high performance of the underlying Cisco 4700, combined

with the feature-rich NP-1FE, makes it an ideal combination for a low-density, higher-performance

application such as inter-VLAN routing.

• High-speed interconnections—The Fast Ethernet interface enables network managers to implement

Fast-Ethernet routing solutions for optimal cost and performance across a wide range of

applications, including campus or enterprise backbones and data centers. It is also a low-cost way

to provide Fast-Ethernet access to traditional low-speed WAN services.

• Local area network aggregation—The Cisco 4500 or the Cisco 4700 series routers can support as

many as 12 Ethernet, 4 Token Ring, or 1 FDDI segment. ISDN interfaces are also supported.

1 2 3 4 5 6 ... 45 46

Inhaltsverzeichnis

Seite 1 - Configuring LAN Interfaces

IC-23Cisco IOS Interface Configuration Guide Configuring LAN InterfacesUse the information in this chapter to configure LAN interfaces supported on C

Seite 2

Configuring LAN InterfacesConfiguring an Ethernet or Fast Ethernet InterfaceIC-32Cisco IOS Interface Configuration GuideYou can access the 12E/2FE VL

Seite 3

Configuring LAN InterfacesConfiguring Fast EtherChannelIC-33Cisco IOS Interface Configuration Guide Configuring the 100VG-AnyLAN Port Adapter The 100

Seite 4

Configuring LAN InterfacesConfiguring Fast EtherChannelIC-34Cisco IOS Interface Configuration Guidelinks. Unicast, broadcast, and multicast traffic i

Seite 5

Configuring LAN InterfacesConfiguring Fast EtherChannelIC-35Cisco IOS Interface Configuration Guide Configuring the Port-Channel InterfaceTo configur

Seite 6

Configuring LAN InterfacesConfiguring Fast EtherChannelIC-36Cisco IOS Interface Configuration GuideConfiguring the Fast Ethernet InterfacesTo assign

Seite 7

Configuring LAN InterfacesConfiguring a Fiber Distributed Data InterfaceIC-37Cisco IOS Interface Configuration Guide EtherChannel even if the line pr

Seite 8

Configuring LAN InterfacesConfiguring a Fiber Distributed Data InterfaceIC-38Cisco IOS Interface Configuration GuideThe scatter-gather architecture u

Seite 9

Configuring LAN InterfacesConfiguring a Fiber Distributed Data InterfaceIC-39Cisco IOS Interface Configuration Guide The CFM state is through A in th

Seite 10

Configuring LAN InterfacesConfiguring a Fiber Distributed Data InterfaceIC-40Cisco IOS Interface Configuration GuideEnabling FDDI Bridging Encapsulat

Seite 11 - Configuring Fast EtherChannel

Configuring LAN InterfacesConfiguring a Fiber Distributed Data InterfaceIC-41Cisco IOS Interface Configuration Guide Setting the Token Rotation TimeY

Seite 12

Configuring LAN InterfacesConfiguring an Ethernet or Fast Ethernet InterfaceIC-24Cisco IOS Interface Configuration GuideWith the Catalyst 3000 or Cat

Seite 13

Configuring LAN InterfacesConfiguring a Fiber Distributed Data InterfaceIC-42Cisco IOS Interface Configuration GuideModifying the TB-Min TimerYou can

Seite 14

Configuring LAN InterfacesConfiguring a Fiber Distributed Data InterfaceIC-43Cisco IOS Interface Configuration Guide Controlling the CMT MicrocodeYou

Seite 15 - Series Routers

Configuring LAN InterfacesConfiguring a Hub InterfaceIC-44Cisco IOS Interface Configuration GuideControlling the FDDI SMT Message Queue SizeYou can s

Seite 16

Configuring LAN InterfacesConfiguring a Hub InterfaceIC-45Cisco IOS Interface Configuration Guide Enabling a Hub PortTo enable a hub port, use the fo

Seite 17 - FDDI Configuration Task List

Configuring LAN InterfacesConfiguring a Hub InterfaceIC-46Cisco IOS Interface Configuration GuideTo enable the link test function on a hub port conne

Seite 18 - • FDDI-to-Token Ring

Configuring LAN InterfacesConfiguring a LAN Extender InterfaceIC-47Cisco IOS Interface Configuration Guide Configuring a LAN Extender InterfaceThe Ci

Seite 19 - Modifying the C-Min Timer

Configuring LAN InterfacesConfiguring a LAN Extender InterfaceIC-48Cisco IOS Interface Configuration GuideFigure 4 Expanded View of Cisco 1000 Series

Seite 20 - Setting the Bit Control

Configuring LAN InterfacesConfiguring a LAN Extender InterfaceIC-49Cisco IOS Interface Configuration Guide Configuring the LAN ExtenderYou configure

Seite 21 - Starting and Stopping FDDI

Configuring LAN InterfacesConfiguring a LAN Extender InterfaceIC-50Cisco IOS Interface Configuration GuideLAN Extender Interface Configuration Task L

Seite 22 - Configuring a Hub Interface

Configuring LAN InterfacesConfiguring a LAN Extender InterfaceIC-51Cisco IOS Interface Configuration Guide Note Do not configure the MTU to a value o

Seite 23 - Enabling a Hub Port

Configuring LAN InterfacesConfiguring an Ethernet or Fast Ethernet InterfaceIC-25Cisco IOS Interface Configuration Guide Specifying an Ethernet or Fa

Seite 24

Configuring LAN InterfacesConfiguring a LAN Extender InterfaceIC-52Cisco IOS Interface Configuration GuideThe major reason to create access lists on

Seite 25

Configuring LAN InterfacesConfiguring a LAN Extender InterfaceIC-53Cisco IOS Interface Configuration Guide Once you have defined an access list to fi

Seite 26 - Discovering the MAC Address

Configuring LAN InterfacesConfiguring a LAN Extender InterfaceIC-54Cisco IOS Interface Configuration GuideTo control priority queueing on a LAN Exten

Seite 27 - Configuring the LAN Extender

Configuring LAN InterfacesConfiguring a LAN Extender InterfaceIC-55Cisco IOS Interface Configuration Guide Shutting Down and Restarting the LAN Exten

Seite 28

Configuring LAN InterfacesConfiguring a LAN Extender InterfaceIC-56Cisco IOS Interface Configuration GuideTroubleshooting the LAN ExtenderThe primary

Seite 29 - Defining Packet Filters

Configuring LAN InterfacesConfiguring a LAN Extender InterfaceIC-57Cisco IOS Interface Configuration Guide For more complete network troubleshooting

Seite 30 - {permit

Configuring LAN InterfacesConfiguring a Token Ring InterfaceIC-58Cisco IOS Interface Configuration GuideConfiguring a Token Ring InterfaceCisco suppo

Seite 31 - Controlling Priority Queueing

Configuring LAN InterfacesConfiguring a Token Ring InterfaceIC-59Cisco IOS Interface Configuration Guide Dedicated Token Ring Port AdapterThe Dedicat

Seite 32

Configuring LAN InterfacesLAN Interface Configuration ExamplesIC-60Cisco IOS Interface Configuration GuideConfiguring PCbus Token Ring Interface Mana

Seite 33 - Restarting the LAN Extender

Configuring LAN InterfacesLAN Interface Configuration ExamplesIC-61Cisco IOS Interface Configuration Guide Ethernet Encapsulation Enablement ExampleT

Seite 34 - LED Condition Meaning

Configuring LAN InterfacesConfiguring an Ethernet or Fast Ethernet InterfaceIC-26Cisco IOS Interface Configuration GuideSpecifying Full-Duplex Operat

Seite 35

Configuring LAN InterfacesLAN Interface Configuration ExamplesIC-62Cisco IOS Interface Configuration GuideRouter(config)# interface ethernet 3/2Route

Seite 36

Configuring LAN InterfacesLAN Interface Configuration ExamplesIC-63Cisco IOS Interface Configuration Guide Fast EtherChannel Configuration ExamplesFi

Seite 37 - Enabling Early Token Release

Configuring LAN InterfacesLAN Interface Configuration ExamplesIC-64Cisco IOS Interface Configuration GuideThe following is a partial example of a con

Seite 38

Configuring LAN InterfacesLAN Interface Configuration ExamplesIC-65Cisco IOS Interface Configuration Guide Hub Configuration ExamplesThe following se

Seite 39

Configuring LAN InterfacesLAN Interface Configuration ExamplesIC-66Cisco IOS Interface Configuration GuideSNMP Illegal Address Trap Enablement for Hu

Seite 40

Configuring LAN InterfacesLAN Interface Configuration ExamplesIC-67Cisco IOS Interface Configuration Guide Ethernet Type Code Filtering ExampleUsing

Seite 41

Configuring LAN InterfacesLAN Interface Configuration ExamplesIC-68Cisco IOS Interface Configuration Guide

Seite 42

Configuring LAN InterfacesConfiguring an Ethernet or Fast Ethernet InterfaceIC-27Cisco IOS Interface Configuration Guide Extending the 10BASE-T Capab

Seite 43 - Hub Configuration Examples

Configuring LAN InterfacesConfiguring an Ethernet or Fast Ethernet InterfaceIC-28Cisco IOS Interface Configuration GuideConfiguring PA-12E/2FE Port A

Seite 44 - MAC Address Filtering Example

Configuring LAN InterfacesConfiguring an Ethernet or Fast Ethernet InterfaceIC-29Cisco IOS Interface Configuration Guide Note If you use the full-dup

Seite 45

Configuring LAN InterfacesConfiguring an Ethernet or Fast Ethernet InterfaceIC-30Cisco IOS Interface Configuration GuideTo configure the interfaces o

Seite 46

Configuring LAN InterfacesConfiguring an Ethernet or Fast Ethernet InterfaceIC-31Cisco IOS Interface Configuration Guide Monitoring and Maintaining t

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