What About Line Cards?

October 2004
Business Communications Review;Oct2004, Vol. 34 Issue 10, p46
Trade Publication
This article reports that the change needed in enterprise switch/routers will require analogous changes in line cards found in PCs, SANs, and WANs. Line cards in PCs and servers operate as communications interfaces, in which information generated by an application-level program or Web can be transmitted to/from another end device. When an application program wants to transmit to another machine, it contacts the operating system kernel in the origin machine. Since the microprocessor is multitasking a variety of functions in addition to message transmission, there necessarily will be frequent interrupts, with the information stored in memory buffers, until the microprocessors is ready to perform the necessary operations. Since there may be delays in receiving positive acknowledgments from end devices, line cards typically have additional memory buffers for packets waiting to be sent over the network. Different generations of PC and server line cards use different architectures for switching transmission to/from different ports.


Related Articles

  • Ask Dr. Intranet. Blass, Steve // Network World;09/11/2000, Vol. 17 Issue 37, p39 

    Answers question related to problem in connecting Internet through the automatic Dial-up Networking of Windows 95. Use of the Internet Options dialogue in controlling the automatic Dial-up Networking; Procedure in using the Internet Options dialogue; Associative registry key values of...

  • NLSP WANs ready soon. Wallace, Bob // InfoWorld;6/13/94, Vol. 16 Issue 24, p43 

    Focuses on efforts by 3Com Corp., Cisco Systems Inc., Wellfleet Communications Inc. and Novell Inc. to develop software for the improvement of NetWare wide area networks (WANs) performance based on the NetWare Link Services Protocol (NLSP). Difficulties with NLSP; Issues in WAN networking;...

  • Sharing ADSL.  // Australian Personal Computer;Dec2002, Issue 288, p128 

    The article discusses how to get Internet Connection Sharing (ICS) working with Asymmetric Digital Subscriber Line (ADSL), using Windows XP as the operating system. Operational working of ICS; Classification of software connection clients for ADSL clients; Steps for enabling ICS.

  • SUPERCHARGE YOUR ROUTER. Taylor, Nathan // APC (Bauer Media Group);Jul2012, Vol. 32 Issue 7, p48 

    The article discusses how DD-WRT, a Linux-based firmware for common router chipsets, can unlock several new features in a router. DD-WRT has features including VPNs, VLAN segmentation, transparent LANs, wireless transmit power tweaking, commercial hotspots and wireless bridging, which are not...

  • What to Do When Network PCs Don't See Eye to Eye. Spector, Lincoln // PCWorld;May2004, Vol. 22 Issue 5, p188 

    This article presents tips on network computers. One thing to be certain that there is no problem with the hardware is the successful Internet access. The first step is to verify that each system's network-configuration and file- and printer-sharing options. For Windows 98 and Me, users right...

  • An archeological dig through Usenet archives. Brooks, David // New Hampshire Business Review;02/08/2002, Vol. 24 Issue 3, p15 

    Offers information on the Usenet computer operating system. Details of its usage; Definition of Google Groups.

  • Who was on first?  // New Hampshire Business Review;02/08/2002, Vol. 24 Issue 3, p15 

    Offers information on the first message produced with the Usenet operating system in New Hampshire. Scope of the message from Software Innovations.

  • 3Com's NLSP support to boost NetWare efficiency on WANs. Wallace, Bob // InfoWorld;6/6/94, Vol. 16 Issue 23, p14 

    Reports on the combined efforts of 3Com Corp. and Novell Inc. in providing efficient running of NetWare over wide area networks (WANs). Support of a feature called NetWare Link Services Protocol (NLSP); Importance of NLSP for users of wide-area local area network (LAN) internets; Testing and...

  • LETTERS. Bird, Mike; Schultz, Keith; Solomon, Lou // InfoWorld;6/13/2005, Vol. 27 Issue 24, p6 

    Presents letters to the editor referencing articles and topics discussed in previous issues. "Building a Better WAN," which discussed the factors affecting the performance of wide area network; "Your Unsupervised PC," which focused on virtualization of certain commands for the operating system.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics