Cisco Systems IC-23 Extending the 10BASE-T Capability, Configuring Fast Ethernet 100BASE-T, IC-27

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Configuring LAN Interfaces

Configuring an Ethernet or Fast Ethernet Interface

Extending the 10BASE-T Capability

On a Cisco 4000 series or Cisco 4500 series routers, you can extend the twisted-pair 10BASE-T capability beyond the standard 100 meters by reducing the squelch (signal cutoff time). This feature applies only to the LANCE controller 10BASE-T interfaces. LANCE is the AMD controller chip for the Cisco 4000 and Cisco 4500 Ethernet interface.

 

Note Does not apply to the Fast Ethernet interface.

 

 

 

 

 

 

To reduce squelch, use the first command in the following table in interface configuration mode. You

 

can later restore the squelch by using the second command.

 

 

 

 

Command

 

 

Purpose

 

 

 

 

squelch reduced

 

 

Reduces the squelch.

 

 

 

 

squelch normal

 

 

Returns squelch to normal.

 

 

 

 

 

Configuring Fast Ethernet 100BASE-T

You must configure the Fast Ethernet 100BASE-T interface on a Cisco AS5300 so that it can be recognized as a device on the Ethernet LAN. The Fast Ethernet interface supports 10- and 100-Mbps speeds with the 100BASE-T and 10BASE-T routers, hubs, and switches.

To configure the interface, use the following commands beginning in privileged EXEC mode:

 

Command

Purpose

Step 1

 

 

configure terminal

Enters global configuration mode.

Step 2

 

 

interface fastethernet number

Enters Fast Ethernet interface configuration mode.

Step 3

 

 

ip address address subnet-mask

Assigns an IP address and subnet mask to the interface.

 

 

 

Step 4

speed {10 100 auto}

Assigns a speed to the interface. The default is 100 Mbps.1

 

 

For relationship between duplex and speed command options, see Table 3.

Step 5

 

 

duplex {full half auto}

Sets up the duplex configuration on the Fast Ethernet interface. The default

 

 

is half duplex.1

 

 

For relationship between duplex and speed command options, see Table 3.

 

 

 

1. The auto option automatically negotiates the speed based on the speed and the peer router, hub, or switch media.

To use the auto-negotiation capability (that is, to detect speed and duplex modes automatically), you must set both speed and duplex to auto. Setting the speed to auto negotiates speed only, and setting duplex to auto negotiates duplex only. Table 3 describes the access server’s performance for different combinations of the duplex and speed command options. The specified duplex command option plus the specified speed command option produces the resulting system action.

Cisco IOS Interface Configuration Guide

IC-27

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Contents IC-23 Configuring an Ethernet or Fast Ethernet InterfaceIC-24 Ethernet and Fast Ethernet Interface Configuration Task ListIC-25 Specifying an Ethernet or Fast Ethernet InterfaceSpecifying an Ethernet Encapsulation Method IC-26 Specifying the Media and Connector TypeSpecifying Full-Duplex Operation IC-27 Configuring Fast Ethernet 100BASE-TExtending the 10BASE-T Capability 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 IC-33 Configuring Fast EtherChannelConfiguring the 100VG-AnyLAN Port Adapter 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 InformationIC-39 Fddi Configuration Task ListSpecifying a Fddi IC-40 Enabling Full-Duplex Mode on the FddiEnabling Fddi Bridging Encapsulation Setting the Transmission Valid Timer Setting the Token Rotation TimeControlling the Transmission Timer Modifying the C-Min TimerModifying the Fddi Timeout Timer Modifying the TB-Min TimerSetting the Bit Control Controlling SMT Frame ProcessingControlling the CMT Microcode Setting Fddi Frames Per Token LimitStarting and Stopping Fddi IC-43Controlling the Fddi SMT Message Queue Size Configuring a Hub InterfacePreallocating Buffers for Bursty Fddi Traffic IC-44Disabling or Enabling Automatic Receiver Polarity Reversal Enabling a Hub PortDisabling or Enabling the Link Test Function IC-45IC-46 Enabling Source Address ControlEnabling Snmp Illegal Address Trap Connecting a LAN Extender to a Core Router Configuring a LAN Extender InterfaceExpanded View of the Connection to a Core Router IC-47Discovering the MAC Address Installing a LAN Extender at a Remote SiteUpgrading Software for the LAN Extender Management of the LAN Extender InterfaceIC-49 Configuring the LAN ExtenderIC-50 LAN Extender Interface Configuration Task ListConfiguring and Creating a LAN Extender Interface 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 ExtenderIC-55 Restarting the LAN ExtenderDownloading a Software Image to the LAN Extender IC-56 Troubleshooting the LAN ExtenderIC-57 System OKIC-58 Configuring a Token Ring InterfaceDedicated Token Ring Port Adapter Token Ring Interface Configuration Task ListSpecifying a Token Ring Interface Enabling Early Token ReleaseConfiguring PCbus Token Ring Interface Management LAN Interface Configuration ExamplesEnabling Token Ring Concentrator Port Monitoring and Maintaining the PortFull Duplex Enablement Operation Example Ethernet Encapsulation Enablement ExamplePA-12E/2FE Port Configuration Examples IC-61IC-62 PA-VG100 Port Adapter Configuration ExampleIC-63 Fast EtherChannel Configuration ExamplesIC-64 Fddi Frames Configuration ExampleHub Port Startup Examples Hub Configuration ExamplesHub Port Shutdown Examples IC-65LAN Extender Interface Access List Examples LAN Extender Enablement Interface ExampleSnmp Illegal Address Trap Enablement for Hub Port Example MAC Address Filtering 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.

One of the standout features of the Cisco IC-23 is its high-speed connectivity options. With support for both wired and wireless communications, this device can seamlessly integrate into a wide range of network architectures. It offers multiple Gigabit Ethernet ports, enabling rapid data transfer and facilitating the connection of numerous devices without compromising performance.

Another key characteristic of the IC-23 is its advanced security protocols. Data breaches and cyber threats are persistent concerns in today's digital landscape, and Cisco addresses these challenges head-on with robust security measures. The IC-23 incorporates features such as firewall capabilities, intrusion detection systems, and secure VPN support, ensuring that sensitive information remains protected while traversing the network.

The IC-23 also leverages Cisco's renowned software-defined networking (SDN) capabilities. This technology allows businesses to manage their network resources dynamically, ensuring optimal performance based on real-time demands. As a result, organizations can easily adjust their network configurations to meet fluctuating workloads, enhancing both efficiency and cost-effectiveness.

Scalability is another critical feature of the IC-23, making it an excellent choice for growing companies. Cisco has designed this device to accommodate increasing data traffic without necessitating a complete overhaul of existing infrastructure. This adaptability ensures that organizations can expand their networks smoothly as their operations evolve.

Moreover, the IC-23 supports a variety of network management tools, providing IT teams with the insights needed to monitor performance and troubleshoot issues proactively. Cisco's user-friendly interface simplifies the process of network management, allowing administrators to optimize resources and maintain continuous uptime.

In conclusion, Cisco Systems IC-23 stands out as a highly capable networking solution tailored for modern enterprises. With its high-speed connectivity, comprehensive security features, SDN capabilities, scalability, and intuitive management tools, the IC-23 is well-equipped to meet the demands of today’s digital environments. As organizations continue to navigate the complexities of the digital age, the IC-23 prepares them to thrive in an increasingly interconnected world.
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