Cisco Revives LAN-SAN Convergence Play in the Data Center

Data Center Knowledge

Cisco Networking Storage Cisco DCNM Cisco MDS 9000 Cisco Nexus 9000 FCIP FCoE LAN SAN convergence storage networking Tony AntonyWith all the ingredients finally in place in one family of switches and a revised family of storage directors, will convergence happen at last? Read More.

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IBM's Impact on LANs

IT Toolbox

Particularly in the areas of microcomputers, LANs, and enterprise networking, IBM's insistence that its customers remain "pure blue" ran against both the economic and technological developments set in motion before 1990

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Trending Sources

LAN Standards From IEEE

IT Toolbox

So, the next grouping of posts will focus on some specific layer standards that we use in LANs every day

LANs Moving Beyond the 1990s

IT Toolbox

LANs are rapidly becoming a basic building block in the structuring of truly global networks that will make the ideal of a global village possible

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LANs as the User Interface in a Distributed Network

IT Toolbox

The appropriate solution was to have only the connection to the LAN with the LAN gatewayed to the larger network and providing the appropriate terminal emulation

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Proper LAN Testing Equipment Part 5

IT Toolbox

The LAN protocol analyzer can capture, record, and analyze frames that have been transmitted on the LAN. They must therefore contain a NIC for that particular LAN, and will attach to the backbone cable in the same way that any workstation would connect

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The Maturation of LANs

IT Toolbox

A good example was Novell's NetWare 4.x product, announced in mid-1993. Competition from IBM?s s OS2 and Microsoft?s s Windows NT server would soon eclipse Novell?s s efforts

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Proper LAN Testing Equipment Part 3

IT Toolbox

Given the digital transmission nature of baseband LANs, one might easily overlook the need for analog test equipment. Three devices are valuable additions to the tool kit: the volt-ohm-milliameter (VOM), the oscilloscope, and the transmission impairment measurement system (TIMS

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Proper LAN Testing Equipment Part 4

IT Toolbox

The digital (or discrete) signal levels present at the LAN interfaces to PCs, printers, modems and other peripherals are the test points most familiar to network managers

The Era of LANs and Multiuser Systems

IT Toolbox

Where have you seen a terminal lately? No where. PCs very quickly became those terminals through emulation software. PCs could be both and do both better. The era of terminals was dead

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NIC Power Management Porperties

Mick's IT Blog

I wrote and published a script that enabled wake on lan two years ago. Since then, I have needed to write new scripts to modify the advanced tab of the NIC properties.

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Secure LAN Messaging

Galido

Softros LAN Messenger is an easy-to-use LAN messaging application for safe, secure and effective intra-office communication and does not require a server or Internet to run and is very easy to install. Softros LAN Messenger. LAN, WAN, VPN and VLAN Support.

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Some final notes on MANs vs LANs

IT Toolbox

With the development of higher-speed (14,400 b/s and higher), reasonably priced telephone modems, the situation was changing. Because analog telephone service is electronically noisy, however, the extensive error-correction techniques necessary for high-speed dial access service resulted in unpredictable service, which may limit throughput

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Proper LAN Testing Equipment Part 2

IT Toolbox

Volumes have been written regarding the damage that electrical transients, surges, and improper grounding techniques can cause to sensitive computer equipment ? including many of my previous posts. Instead of providing details on the subject of power protection per se, I will concentrate this time on test equipment that a typical network administrator might use

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The Impacts of IBM's SNA Networking on LANs Part 5

IT Toolbox

PU-T2.1 was defined in 1983 and is designed for peer-to-peer coupling (for PCs, for example) or subarea routing. The former is, in principle, nonmediated?that that is, it is not necessary for routing through VTAM or NCP, although two PCs communicating with one another through different SNA cluster controllers will probably have to pass through the Communications FEP

LANs and the Early Days of Office Automation

IT Toolbox

In the effort to find out how microcomputers were being used, even as early as 1982, as well as to refine further the meaning of "office automation," respondents to a survey were asked to list the uses their organizations made of micro computers

Proper LAN testing Equipment Part 1

IT Toolbox

A variety of devices, including cabling system testers, power line monitors, and analog and digital interface diagnosis equipment will be discussed. This is by no means an exhaustive list. Each network, because of its uniqueness, will require additions and deletions to this smorgasbord. Use it only as a guide?a a starting point for assembling your own tool kit

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The Impacts of IBM's SNA Networking on LANs Part 3

IT Toolbox

SNA is a layered architecture similar to the International Standards Organization's Open Systems Interconnection (OSI) model. SNA proper is divided into only five (not seven) layers?End End User and Physical layers are not part of the formal scope of SNA

The Impact of Digital's DNA on LANs

IT Toolbox

DEC's implementation of Ethernet was sufficiently important to its view of networking. As a note, DEC was bought out by Compaq which was later acquired by HP

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Historical IBM Microcomputer Hardware/Software LAN Products

IT Toolbox

The concept of an overarching connectivity architecture such as SAA was one approach to managing these compromises. One clearly evident (if not explicitly stated) IBM strategy in managing outside competition was to coopt popular technology

The End Of The Group File Share? - Chuck's Blog

Chuck's Blog - EMC

It was certainly a big deal many decades ago: the notion that one of your desktop drives ("H:") could actually be shared with your co-workers over a LAN.  Chucks Blog. An IT industry insiders perspective on information, technology and customer challenges. Archives. Profile.

The Impacts of IBM's SNA Networking on LANs Part 4

IT Toolbox

Support for resource sharing is particularly important since in a modern data communications network one primary objective is (or should be) extensive connectivity among end-users and devices

The Impacts of IBM's SNA Networking on LANs Part 2

IT Toolbox

IBM did not, for the most part, sell SNA as a generalized networking solution independent of its own product line. It was designed to be a networking solution primarily revolving around an information environment that has IBM-designed large or mid-range computers at the center

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The Cloud Job Market Update: SDN and APIs Are Hot

Data Center Knowledge

Cloud Computing Data Center Jobs Networking Virtualization API jobs LAN software-defined networking The digitization of the modern data center has created the need for even more robust services and control methods.

New year's resolution for IoT vendors: Start treating LANs as hostile

Network World

In November, researchers from cybersecurity firm Invincea reported a vulnerability that could have allowed hackers to infect Belkin WeMo smart plugs with malware. The flaw was located in a configuration protocol that worked over the local area network and didn't require any authentication. In 2015, when researchers from vulnerability intelligence firm Rapid7 analyzed nine Internet-connected baby monitors, they found hardcoded credentials in four of them.

Putting Together Your LAN Troubleshooting Toolkit

IT Toolbox

After seeing this smorgasbord of equipment available for helping you to test and troubleshoot your network, the next logical question is, "Which tools should I purchase for my network?" Here are some guidelines

The Domination of TCP/IP on the LAN Part 1

IT Toolbox

TCP provides the packet sequencing, error control, and other services required to provide reliable end-to-end communications while IP takes the packet from TCP and passes it through whatever gateways are needed, for delivery to the remote TCP layer through the remote IP layer. Some networks, in fact, could use IP but not TCP, preferring instead to use some alternative protocol at the transport layer

The Domination of TCP/IP on the LAN Part 2

IT Toolbox

Each of the services implied by these protocols should generally be present in any implementation of TCP/IP, although SMTP was not always supported by microcomputer-based systems

The Domination of TCP/IP on the LAN Part 3

IT Toolbox

TCP segments user data into manageable units, then appends a TCP header that includes the destination port, segment sequence number, and checksum to test for errors in transmission

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Nokia’s New Case for GPON Shrinking Data Center Footprints

Data Center Knowledge

Nokia announced on Tuesday its official entry into the passive optical LAN (POL) market for on-premises data centers. Read More. Connectivity Networking POL

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The Impacts of IBM's SNA Networking on LANs Part 1

IT Toolbox

IBM also supported a wide variety of other software interfaces, as well, including IEEE's Logical Link Control (LLC). In addition, IBM sold a number of Ethernet (802.3) related products during this time as a hedge

Utilizing Broadband

IT Toolbox

High-bandwidth technologies are necessary primarily for three reasons: increased traffic on local LAN segments, internetworking between local and remote LAN segments and high-bandwidth desktop applications

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Twisted Pair Ethernet Hardware Troubleshooting Part 2

IT Toolbox

Starting at the Data Link layer, ARCNET, IEEE 802, or Ethernet LANs have been frequently implemented for network access

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