Cisco Systems IC-23 Enabling Fddi Bridging Encapsulation, Enabling Full-Duplex Mode on the Fddi

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Configuring LAN Interfaces

Configuring a Fiber Distributed Data Interface

Enabling FDDI Bridging Encapsulation

Cisco FDDI by default uses the SNAP encapsulation format defined in RFC 1042. It is not necessary to define an encapsulation method for this interface when using the FIP.

FIP fully supports transparent and translational bridging for the following configurations:

FDDI-to-FDDI

FDDI-to-Ethernet

FDDI-to-Token Ring

Enabling FDDI bridging encapsulation places the FIP into encapsulation mode when doing bridging. In transparent mode, the FIP interoperates with earlier versions of encapsulating interfaces when performing bridging functions on the same ring. When using the FIP, you can specify the encapsulation method by using the following command in interface configuration mode:

Command

 

Purpose

 

 

 

fddi encapsulate

 

Specifies the encapsulation method for the FIP.

 

 

 

 

 

 

 

 

When you are doing translational bridging, use routing for routable protocols and use translational

 

 

 

bridging for the rest (such as LAT).

 

 

 

 

 

 

Note

Bridging between dissimilar media presents several problems that can prevent

 

 

 

communications. These problems include bit-order translation (using MAC addresses as

 

 

 

data), maximum transfer unit (MTU) differences, frame status differences, and multicast

 

 

 

address usage. Some or all of these problems might be present in a multimedia-bridged

 

 

 

LAN and might prevent communication. These problems are most prevalent in networks

 

 

 

that bridge between Token Rings and Ethernet networks or between Token Rings and FDDI

 

 

 

because of the different ways Token Ring is implemented by the end nodes.

 

 

 

 

 

 

 

 

 

We are currently aware of problems with the following protocols when bridged between Token Ring and

 

 

 

other media: AppleTalk, DECnet, IP, Novell IPX, Phase IV, VINES, and XNS. Further, the following

 

 

 

protocols might have problems when bridged between FDDI and other media: Novell IPX and XNS. We

 

 

 

recommend that these protocols be routed whenever possible.

Enabling Full-Duplex Mode on the FDDI

To enable full-duplex mode on the PA-F/FD-SM and PA-F/FD-MM port adapters, use one of the following commands in interface configuration mode:

Command

full-duplex

or

Purpose

Enables full-duplex on the FDDI interface of the PA-F/FD-SM and PA-F/FD-MM port adapter.

no half-duplex

Cisco IOS Interface Configuration Guide

IC-40

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Contents Configuring an Ethernet or Fast Ethernet Interface IC-23Ethernet and Fast Ethernet Interface Configuration Task List IC-24Specifying 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 Configuring PA-12E/2FE Port Adapter IC-28Configuring the PA-12E/2FE Port Adapter IC-29IC-30 Monitoring and Maintaining the PA-12E/2FE Port Adapter IC-31IC-32 Configuring Fast EtherChannel Configuring the 100VG-AnyLAN Port AdapterIC-33 Fast EtherChannel Configuration Task List IC-34Configuring the Port-Channel Interface IC-35Configuring the Fast Ethernet Interfaces IC-36Configuring a Fiber Distributed Data Interface IC-37Using Connection Management Information IC-38Fddi Configuration Task List Specifying a FddiIC-39 Enabling Full-Duplex Mode on the Fddi Enabling Fddi Bridging EncapsulationIC-40 Controlling the Transmission Timer Setting the Token Rotation TimeSetting the Transmission Valid Timer Modifying the C-Min TimerSetting the Bit Control Modifying the TB-Min TimerModifying the Fddi Timeout Timer Controlling SMT Frame ProcessingStarting and Stopping Fddi Setting Fddi Frames Per Token LimitControlling the CMT Microcode IC-43Preallocating Buffers for Bursty Fddi Traffic Configuring a Hub InterfaceControlling the Fddi SMT Message Queue Size IC-44Disabling or Enabling the Link Test Function Enabling a Hub PortDisabling or Enabling Automatic Receiver Polarity Reversal IC-45Enabling Source Address Control Enabling Snmp Illegal Address TrapIC-46 Expanded View of the Connection to a Core Router Configuring a LAN Extender InterfaceConnecting a LAN Extender to a Core Router IC-47Upgrading Software for the LAN Extender Installing a LAN Extender at a Remote SiteDiscovering the MAC Address Management of the LAN Extender InterfaceConfiguring the LAN Extender IC-49LAN Extender Interface Configuration Task List Configuring and Creating a LAN Extender InterfaceIC-50 Defining Packet Filters IC-51Filtering by MAC Address and Vendor Code IC-52Controlling Priority Queueing IC-53Controlling the Sending of Commands to the LAN Extender IC-54Restarting the LAN Extender Downloading a Software Image to the LAN ExtenderIC-55 Troubleshooting the LAN Extender IC-56System OK IC-57Configuring a Token Ring Interface IC-58Specifying a Token Ring Interface Token Ring Interface Configuration Task ListDedicated Token Ring Port Adapter Enabling Early Token ReleaseEnabling Token Ring Concentrator Port LAN Interface Configuration ExamplesConfiguring PCbus Token Ring Interface Management Monitoring and Maintaining the PortPA-12E/2FE Port Configuration Examples Ethernet Encapsulation Enablement ExampleFull Duplex Enablement Operation Example IC-61PA-VG100 Port Adapter Configuration Example IC-62Fast EtherChannel Configuration Examples IC-63Fddi Frames Configuration Example IC-64Hub Port Shutdown Examples Hub Configuration ExamplesHub Port Startup Examples IC-65Snmp Illegal Address Trap Enablement for Hub Port Example LAN Extender Enablement Interface ExampleLAN Extender Interface Access List Examples MAC Address Filtering ExampleEthernet Type Code Filtering Example IC-67IC-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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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.