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The approaches to integrated networking implemented by Banyan and Novell are difficult to match to the OSI model as well. The architectures presented in this series of posts were changing rapidly during the times that these platforms were in use, so they often differed from what you actually bought in a given product release MORE
LAN Access from Remote Locations Not too many years ago, it was common to read statements to the effect that we had seen the last of serial (RS-232) communications, either with direct connections or through modems MORE
In an organizational context, networks provided the means for allowing the computing power available to be used to its most complete extent MORE
In the early 1990s, there seemed to have been some convergence on the use of 802.2 (LLC) LLC) and 802.3/802.5 Mac sub-layers as the basic Physical and Data Link Layer technology. Every major manufacturer provided this alternative, and over time it became a common methodology employed MORE
At that some point it will be important to understand how LANs fit into the overall OSI scheme of things, and that will be illustrated by reference to MAP, the Manufacturing Automation Protocol in some future post MORE
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. MORE
In addition to the network architectures mentioned above, other protocol or protocol-like issues were of great importance MORE
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 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. MORE
Applications for SMDS include LAN interconnection; high-speed, remote database access; packet audio and video; resource sharing by educational institutions; image transfer; and teleradiology MORE
Early last week, Ajit Pai, the Chairman of the US Federal Communications Commission (FCC) announced his approval of the merger of T-Mobile and Sprint. This will result in a third mega-carrier in the US mobile wireless market, which is a good move for consumers like you and me. MORE
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 MORE
Each network, because of its uniqueness, will require additions and deletions to this smorgasbord. 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. Use it only as a guide?a a starting point for assembling your own tool kit MORE
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 MORE
Some networks, in fact, could use IP but not TCP, preferring instead to use some alternative protocol at the transport layer 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. MORE
In general, pipes are software developers' tools for easily creating communications routines in software without having to explicitly control and issue commands to the communications hardware MORE
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 MORE
With just a bit of cobbling together, you can have a networked instance of MS Code up on your LAN MORE
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 MORE
That was the state as we grew networks through the 1990s. But these devices also disappeared into routers and switches such that it was easier to simply light up a port in a switch that was used to bridge to another switch representing another network. These sorts of devices are rarely seen today as stand-alone hardware products MORE
Other changes that took place with telephone systems, cable systems (CATV), and LAN technology itself resulted in renewed competition among the manufacturers of these products. This is still occuring in the broadband space, however the debate over telecom vs CATV for broadband is coming to a close as both types of providers ultimately move to fibre-based services that look and operate identically regardless MORE
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 MORE
Under the best of circumstances, the end-user should not even know that a network exists. If he wishes to do something simple, like copy a file from one place to another, it should be possible to use something like the old MS/DOS copy command and simply type: COPY c:mydata.dat p:yourdata.dat. MORE
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 MORE
If your company’s policy is to maintain an independent network with safe, secure and effective intra-office communication, external cloud messaging applications may not meet your needs. Softros LAN Messenger. Message history can be saved locally or on a network share. MORE
The report “Connected Solutions Are A Catalyst For Tech-Driven Innovation” highlights how technology-driven innovation by telcos and network equipment vendors can help CIOs from outside the telecoms sector with their innovation initiatives. MORE
Token Ring) LANs resulting in the capture of a much larger market share." These conclusions were largely based on assumptions, at the time, that growth in the marketplace will come largely in LANs based on international standards In 1987 it was said, "throughout the 1990s we should anticipate that there will be a growth in 802.3 Ethernet) and 802.5 MORE
Before proceeding further, a brief comment on the use of the terms "proprietary" and "open system" is probably in order MORE
The earlier manifestations of the PC-based LANs, by way of contrast, were not designed to provide connectivity except to a file server and to other micros on the network MORE
The NETwork Basic Input Output System (NET-BIOS) was introduced at the same time IBM announced the PC Network in 1984. The network microcode was the foundation for program control of the IBM LANs; it resides in ROM on the Adapter Card, on diskette, or on the PC's motherboard MORE
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 MORE
the network system calls then provided under interrupt 21H gave all suppliers of network software the capability to standardize at least some of the access to LAN hardware. Most manufacturers of LAN software had announced or implemented support of NETBIOS for IBM LANs When DOS was extended in Version 3.1, MORE
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 MORE
Even though the earliest LANs were of this genre, by 1989 it appeared that they were on the way out. By 1992, however, new life had been breathed into peer-to-peer networking by both Novell and Microsoft, along with the popularity of Artisoft's LANtastic. We will take a close look at peer-to-peer LANs at a deeper level in some future posts MORE
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 MORE
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 MORE
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 MORE
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. MORE
The fileservers were usually high-performance PCs running under some operating system that allows multiple activities to take place concurrently. Two approaches have been taken by NOS manufacturers MORE
In the past, if we wished to attach some other random LAN to this system, we typically needed a gateway to perform protocol conversion from whatever the LAN was using (assuming that it was not running the same DECnet protocol) to the DECnet protocols MORE
Read Luke O’Neill explain how 5G, cloud and SD-WAN technologies could plug the shortcomings of the Wide Area Networks on Tech Target : In the old days, about a decade ago, remote employees would go into a branch office, sit at a desk with a laptop or desktop computer and connect to the company LAN, […]. News MORE
Copper-based local area networks are increasingly unfit for purpose in a digital enterprise, but passive optical LANs may be a solution. Tech evangelist Paul Ryan, chair of the Association of Passive Optical LAN, explains why MORE
First, it is now widely accepted that LAN-based services, such as faxing and email, can cut costs for providing these or analogous services Several developments took place that allowed us to reply affirmatively to the question of cost-effectiveness. MORE
The network operating system or other networking software could make moving from one PC LAN to another either simple or complicated MORE
One of my historical design criteria was that each person with a LAN workstation should have access to fax services What will go down in history as a blip on the technological radar is faxing. MORE
Forrester IT
SEPTEMBER 4, 2019
The report “Connected Solutions Are A Catalyst For Tech-Driven Innovation” highlights how technology-driven innovation by telcos and network equipment vendors can help CIOs from outside the telecoms sector with their innovation initiatives.
Forrester IT
MAY 28, 2019
Early last week, Ajit Pai, the Chairman of the US Federal Communications Commission (FCC) announced his approval of the merger of T-Mobile and Sprint. This will result in a third mega-carrier in the US mobile wireless market, which is a good move for consumers like you and me.
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Computer Weekly
SEPTEMBER 26, 2017
Copper-based local area networks are increasingly unfit for purpose in a digital enterprise, but passive optical LANs may be a solution. Tech evangelist Paul Ryan, chair of the Association of Passive Optical LAN, explains why
IT Toolbox
APRIL 28, 2017
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
IT Toolbox
SEPTEMBER 27, 2017
the network system calls then provided under interrupt 21H gave all suppliers of network software the capability to standardize at least some of the access to LAN hardware. Most manufacturers of LAN software had announced or implemented support of NETBIOS for IBM LANs When DOS was extended in Version 3.1,
IT Toolbox
JUNE 15, 2017
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
IT Toolbox
AUGUST 22, 2017
Even though the earliest LANs were of this genre, by 1989 it appeared that they were on the way out. By 1992, however, new life had been breathed into peer-to-peer networking by both Novell and Microsoft, along with the popularity of Artisoft's LANtastic. We will take a close look at peer-to-peer LANs at a deeper level in some future posts
|
IT Toolbox
AUGUST 30, 2017
Token Ring) LANs resulting in the capture of a much larger market share." These conclusions were largely based on assumptions, at the time, that growth in the marketplace will come largely in LANs based on international standards In 1987 it was said, "throughout the 1990s we should anticipate that there will be a growth in 802.3 Ethernet) and 802.5
IT Toolbox
SEPTEMBER 25, 2017
In the past, if we wished to attach some other random LAN to this system, we typically needed a gateway to perform protocol conversion from whatever the LAN was using (assuming that it was not running the same DECnet protocol) to the DECnet protocols
IT Toolbox
JANUARY 26, 2017
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
Data Center Knowledge
OCTOBER 19, 2016
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.
IT Toolbox
SEPTEMBER 25, 2017
The NETwork Basic Input Output System (NET-BIOS) was introduced at the same time IBM announced the PC Network in 1984. The network microcode was the foundation for program control of the IBM LANs; it resides in ROM on the Adapter Card, on diskette, or on the PC's motherboard
IT Toolbox
APRIL 25, 2017
In an organizational context, networks provided the means for allowing the computing power available to be used to its most complete extent
|
IT Toolbox
JUNE 13, 2016
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
Galido
SEPTEMBER 13, 2016
If your company’s policy is to maintain an independent network with safe, secure and effective intra-office communication, external cloud messaging applications may not meet your needs. Softros LAN Messenger. Message history can be saved locally or on a network share.
IT Toolbox
SEPTEMBER 23, 2017
In addition to the network architectures mentioned above, other protocol or protocol-like issues were of great importance
IT Toolbox
SEPTEMBER 13, 2017
The fileservers were usually high-performance PCs running under some operating system that allows multiple activities to take place concurrently. Two approaches have been taken by NOS manufacturers
IT Toolbox
SEPTEMBER 23, 2017
In the early 1990s, there seemed to have been some convergence on the use of 802.2 (LLC) LLC) and 802.3/802.5 Mac sub-layers as the basic Physical and Data Link Layer technology. Every major manufacturer provided this alternative, and over time it became a common methodology employed
IT Toolbox
AUGUST 7, 2017
Under the best of circumstances, the end-user should not even know that a network exists. If he wishes to do something simple, like copy a file from one place to another, it should be possible to use something like the old MS/DOS copy command and simply type: COPY c:mydata.dat p:yourdata.dat.
IT Toolbox
AUGUST 28, 2017
In general, pipes are software developers' tools for easily creating communications routines in software without having to explicitly control and issue commands to the communications hardware
IT Toolbox
AUGUST 23, 2017
The approaches to integrated networking implemented by Banyan and Novell are difficult to match to the OSI model as well. The architectures presented in this series of posts were changing rapidly during the times that these platforms were in use, so they often differed from what you actually bought in a given product release
IT Toolbox
FEBRUARY 16, 2017
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
IT Toolbox
AUGUST 19, 2017
Before proceeding further, a brief comment on the use of the terms "proprietary" and "open system" is probably in order
IT Toolbox
MARCH 9, 2017
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
IT Toolbox
MARCH 9, 2017
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
IT Toolbox
FEBRUARY 16, 2017
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
IT Toolbox
MARCH 26, 2017
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
IT Toolbox
MARCH 12, 2017
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
Tech Republic Cloud
JULY 1, 2020
With just a bit of cobbling together, you can have a networked instance of MS Code up on your LAN
IT Toolbox
JUNE 25, 2016
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
IT Toolbox
MAY 23, 2016
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 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.
IT Toolbox
MAY 16, 2016
Each network, because of its uniqueness, will require additions and deletions to this smorgasbord. 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. Use it only as a guide?a a starting point for assembling your own tool kit
IT Toolbox
MAY 17, 2017
The network operating system or other networking software could make moving from one PC LAN to another either simple or complicated
IT Toolbox
FEBRUARY 15, 2017
Some networks, in fact, could use IP but not TCP, preferring instead to use some alternative protocol at the transport layer 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.
IT Toolbox
JANUARY 19, 2017
Applications for SMDS include LAN interconnection; high-speed, remote database access; packet audio and video; resource sharing by educational institutions; image transfer; and teleradiology
IT Toolbox
MAY 15, 2017
That was the state as we grew networks through the 1990s. But these devices also disappeared into routers and switches such that it was easier to simply light up a port in a switch that was used to bridge to another switch representing another network. These sorts of devices are rarely seen today as stand-alone hardware products
Data Center Knowledge
SEPTEMBER 17, 2013
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.
IT Toolbox
FEBRUARY 13, 2017
At that some point it will be important to understand how LANs fit into the overall OSI scheme of things, and that will be illustrated by reference to MAP, the Manufacturing Automation Protocol in some future post
IT Toolbox
JANUARY 17, 2017
Other changes that took place with telephone systems, cable systems (CATV), and LAN technology itself resulted in renewed competition among the manufacturers of these products. This is still occuring in the broadband space, however the debate over telecom vs CATV for broadband is coming to a close as both types of providers ultimately move to fibre-based services that look and operate identically regardless
CTOvision
MARCH 30, 2020
Read Luke O’Neill explain how 5G, cloud and SD-WAN technologies could plug the shortcomings of the Wide Area Networks on Tech Target : In the old days, about a decade ago, remote employees would go into a branch office, sit at a desk with a laptop or desktop computer and connect to the company LAN, […]. News
IT Toolbox
JANUARY 22, 2017
One of my historical design criteria was that each person with a LAN workstation should have access to fax services What will go down in history as a blip on the technological radar is faxing.
IT Toolbox
JANUARY 22, 2017
First, it is now widely accepted that LAN-based services, such as faxing and email, can cut costs for providing these or analogous services Several developments took place that allowed us to reply affirmatively to the question of cost-effectiveness.
IT Toolbox
JANUARY 22, 2017
LAN Access from Remote Locations Not too many years ago, it was common to read statements to the effect that we had seen the last of serial (RS-232) communications, either with direct connections or through modems
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