Cisco Systems IC-23 manual Configuring the LAN Extender, IC-49

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Configuring LAN Interfaces

Configuring a LAN Extender Interface

Configuring the LAN Extender

You configure the LAN Extender from the core router—either a Cisco 4000 series or Cisco 7000 series router—as if it were simply a network interface board. The LAN Extender cannot be managed or configured from the remote Ethernet LAN or via a Telnet session.

To configure the LAN Extender, you configure a logical LAN Extender interface on the core router and assign the MAC address from your LAN Extender to that interface. Subsequently, during the PPP negotiation on the serial line, the LAN Extender sends its preconfigured MAC address to the core router. The core router then searches for an available (preconfigured) LAN Extender interface, seeking one to which you have already assigned that MAC address. If the core router finds a match, it binds, or associates, that LAN Extender interface to the serial line on which that MAC address was negotiated. At this point, the LAN Extender interface is created and is operational. If the MAC address does not match one that is configured, the connection request is rejected. Figure 6 illustrates this binding process.

Figure 6 Binding a Serial Line to a LAN Extender Interface

S1

 

 

 

 

 

S0

S2

 

 

LAN Extender

Core router

 

 

MAC Address

Serial

 

 

 

00.00.0c.01.00.05

Available LAN

 

MAC

Interface

Extender Interfaces

Address

S0

0

 

00.00.0c.00.00.01

S1

1

 

00.00.0c.00.01.03

S2

2

 

00.00.0c.01.00.05

S1

 

 

 

PPP

 

 

 

negotiation

1.)

 

 

 

 

 

 

 

 

S0

S2

 

 

LAN Extender

Core router

 

 

2.)

My MAC address 00.00.0c.01.00.05

00.00.0c.01.00.05 corresponds to

3.) LAN Extender interface 2 on serial interface 2

S1

4.)

S0S2

Core router

S2922

LAN Extender

LAN Extender interface 2, and hence LAN extender is bound to serial interface 2

Cisco IOS Interface Configuration Guide

IC-49

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Contents IC-23 Configuring an Ethernet or Fast Ethernet InterfaceIC-24 Ethernet and Fast Ethernet Interface Configuration Task ListSpecifying an Ethernet or Fast Ethernet Interface Specifying an Ethernet Encapsulation MethodIC-25 Specifying the Media and Connector Type Specifying Full-Duplex OperationIC-26 Configuring Fast Ethernet 100BASE-T Extending the 10BASE-T CapabilityIC-27 IC-28 Configuring PA-12E/2FE Port AdapterIC-29 Configuring the PA-12E/2FE Port AdapterIC-30 IC-31 Monitoring and Maintaining the PA-12E/2FE Port AdapterIC-32 Configuring Fast EtherChannel Configuring the 100VG-AnyLAN Port AdapterIC-33 IC-34 Fast EtherChannel Configuration Task ListIC-35 Configuring the Port-Channel InterfaceIC-36 Configuring the Fast Ethernet InterfacesIC-37 Configuring a Fiber Distributed Data InterfaceIC-38 Using Connection Management InformationFddi Configuration Task List Specifying a FddiIC-39 Enabling Full-Duplex Mode on the Fddi Enabling Fddi Bridging EncapsulationIC-40 Modifying the C-Min Timer Setting the Token Rotation TimeSetting the Transmission Valid Timer Controlling the Transmission TimerControlling SMT Frame Processing Modifying the TB-Min TimerModifying the Fddi Timeout Timer Setting the Bit ControlIC-43 Setting Fddi Frames Per Token LimitControlling the CMT Microcode Starting and Stopping FddiIC-44 Configuring a Hub InterfaceControlling the Fddi SMT Message Queue Size Preallocating Buffers for Bursty Fddi TrafficIC-45 Enabling a Hub PortDisabling or Enabling Automatic Receiver Polarity Reversal Disabling or Enabling the Link Test FunctionEnabling Source Address Control Enabling Snmp Illegal Address TrapIC-46 IC-47 Configuring a LAN Extender InterfaceConnecting a LAN Extender to a Core Router Expanded View of the Connection to a Core RouterManagement of the LAN Extender Interface Installing a LAN Extender at a Remote SiteDiscovering the MAC Address Upgrading Software for the LAN ExtenderIC-49 Configuring the LAN ExtenderLAN Extender Interface Configuration Task List Configuring and Creating a LAN Extender InterfaceIC-50 IC-51 Defining Packet FiltersIC-52 Filtering by MAC Address and Vendor CodeIC-53 Controlling Priority QueueingIC-54 Controlling the Sending of Commands to the LAN ExtenderRestarting the LAN Extender Downloading a Software Image to the LAN ExtenderIC-55 IC-56 Troubleshooting the LAN ExtenderIC-57 System OKIC-58 Configuring a Token Ring InterfaceEnabling Early Token Release Token Ring Interface Configuration Task ListDedicated Token Ring Port Adapter Specifying a Token Ring InterfaceMonitoring and Maintaining the Port LAN Interface Configuration ExamplesConfiguring PCbus Token Ring Interface Management Enabling Token Ring Concentrator PortIC-61 Ethernet Encapsulation Enablement ExampleFull Duplex Enablement Operation Example PA-12E/2FE Port Configuration ExamplesIC-62 PA-VG100 Port Adapter Configuration ExampleIC-63 Fast EtherChannel Configuration ExamplesIC-64 Fddi Frames Configuration ExampleIC-65 Hub Configuration ExamplesHub Port Startup Examples Hub Port Shutdown ExamplesMAC Address Filtering Example LAN Extender Enablement Interface ExampleLAN Extender Interface Access List Examples Snmp Illegal Address Trap Enablement for Hub Port ExampleIC-67 Ethernet Type Code Filtering ExampleIC-68

IC-23 specifications

Cisco Systems IC-23 is a robust networking device designed to address the ever-evolving demands of modern enterprises. As part of Cisco's extensive portfolio, the IC-23 serves as an ideal solution for organizations seeking to enhance their network performance, reliability, and scalability.

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