Cisco Systems IC-23 Configuring a Hub Interface, Controlling the Fddi SMT Message Queue Size

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Configuring LAN Interfaces

Configuring a Hub Interface

Controlling the FDDI SMT Message Queue Size

You can set the maximum number of unprocessed FDDI Station Management (SMT) frames that will be held for processing. Setting this number is useful if the router you are configuring gets bursts of messages arriving faster than the router can process them. To set the number of frames, use the following command in global configuration mode:

Command

Purpose

 

 

smt-queue-threshold number

Sets SMT message queue size.

 

 

Preallocating Buffers for Bursty FDDI Traffic

The FCI card preallocates three buffers to handle bursty FDDI traffic (for example, NFS bursty traffic). You can change the number of preallocated buffers by using the following command in interface configuration mode:

Command

Purpose

 

 

fddi burst-count

Preallocates buffers to handle bursty FDDI traffic.

 

 

Configuring a Hub Interface

The Cisco 2500 series routers includes routers that have hub functionality for an Ethernet interface. The hub is a multiport repeater. The advantage of an Ethernet interface over a hub is that the hub provides a star-wiring physical network configuration while the Ethernet interface provides 10BASE-T physical network configuration. The router models with hub ports and their configurations are as follows:

Cisco 2505—1 Ethernet (8 ports) and 2 serial

Cisco 2507—1 Ethernet (16 ports) and 2 serial

Cisco 2516—1 Ethernet (14 ports), 2 serial, and 1 ISDN BRI

We provide SNMP management of the Ethernet hub as specified in RFC 1516, “Definitions of Managed Objects for IEEE 802.3 Repeater Devices.”

To configure hub functionality on an Ethernet interface, perform the tasks in the following sections:

Enabling a Hub Port (Required)

Disabling or Enabling Automatic Receiver Polarity Reversal (Optional)

Disabling or Enabling the Link Test Function (Optional)

Enabling Source Address Control (Optional)

Enabling SNMP Illegal Address Trap (Optional)

For configuration examples, see the “Hub Configuration Examples” section.

Cisco IOS Interface Configuration Guide

IC-44

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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 Encapsulation Method Specifying an Ethernet or Fast Ethernet InterfaceIC-25 Specifying Full-Duplex Operation Specifying the Media and Connector TypeIC-26 Extending the 10BASE-T Capability Configuring Fast Ethernet 100BASE-TIC-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 the 100VG-AnyLAN Port Adapter Configuring Fast EtherChannelIC-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-38Specifying a Fddi Fddi Configuration Task ListIC-39 Enabling Fddi Bridging Encapsulation Enabling Full-Duplex Mode on the FddiIC-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 Snmp Illegal Address Trap Enabling Source Address ControlIC-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-49Configuring and Creating a LAN Extender Interface LAN Extender Interface Configuration Task ListIC-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-54Downloading a Software Image to the LAN Extender Restarting 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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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.