Showing posts with label Cisco network hardware. Show all posts
Showing posts with label Cisco network hardware. Show all posts

Tuesday, January 31, 2012

Cisco Memory and Third Party Memory


How would I upload a file from my PC into a Cisco router's flash memory?
I want to replace the default music on hold playing in my office. I have the properly formatted music on a desktop. How do I get the music from there into the router? (2821 running Cisco Communications Manager Express)

What type of memory for Cisco 2811 Routers? Registered or Unbuffered?
Cisco 2811 Routers require ECC SDRAM (133 MHz, DDR266/PC2100 184-Pin) memory - should it be registered or Unbuffered?

Cisco memory? Who can tell some general info about Cisco memory?
There is no such thing? Cisco makes networking devices, mostly for large enterprises. They don't manufacture memory modules or chips.
Anything labeled Cisco memory is almost certainly produced by another vendor, but certified to work in Cisco equipment. If you're using it in a non-Cisco environment, it should work as well as any decent grade memory.
Watch the memory specs, however. It wouldn't surprise me to learn that some Cisco equipment uses ECC (error correcting) memory that most PC workstations can't handle.

Cisco memory is vital for Cisco network hardware including Cisco routers, Cisco switches, and firewalls. Questions above from Cisco users told us their common problems while choosing Cisco memory. How many types of Cisco memory? How is it used in Cisco network equipment?

Right, one secret to Cisco "Original" memory is that Cisco does not manufacture any memory themselves. The memory parts customers get when they purchase Cisco equipment are manufactured by a Cisco approved OEM (Original Equipment Manufacturer). The OEM could be any company from Cisco's Approved Vendor List (AVL) which includes companies such as OKI Semiconductor, NEC Electronics, and Samsung among others. Cisco does not make their AVL public.

Approved/OEM Cisco memory refers to memory parts manufactured by companies on Cisco's AVL; these memory modules have been engineered specifically for use by Cisco Systems and undergo strict and comprehensive testing before being approved by Cisco for use with their routers and other products. These modules are guaranteed to have 100% compatibility with their corresponding Cisco equipment and are backed by a lifetime warranty.

Third party memory modules on the other hand are manufactured by companies not on Cisco's AVL and are not tested nor approved by Cisco Systems. The manufacturer does offer warranty and compatibility guarantee for these memory modules but Cisco does not. And although manufacturers of such memory modules claim to be fully compliant with Cisco's specifications, Cisco does hold the right to refuse service, under warranty, when the fault is deemed to be caused by the 3rd party memory modules. 

There are advantages to both choices. The specter that Cisco could deny warranty service to those using third party memories is the best reason to only purchase Cisco Original memory. Both Cisco original and third party memory are built to the benchmarks set by Cisco by large OEM semiconductor companies, and third party memory provides a lower cost option to users with budget constraints.

Thursday, September 29, 2011

Network Equipment, Basic Knowledge You Need to Get


Computer networking devices are units that mediate data in a computer network. Computer networking devices are also called network equipment, Intermediate Systems (IS) or InterWorking Unit (IWU). Units which are the last receiver or generate data are called hosts or data terminal equipment.

The Internet has truly revolutionized the way we communicate. If you actually think about it, the Internet is computer networking at the highest scale of complexity. It’s a continuous link of connected computers that spreads worldwide. How is data transfer and the implementation of networking protocols made possible in this colossal network? It is made possible because of networking devices that regulate data traffic over the whole network, providing connectivity and control. The network design is based on the OSI (Open Systems Interconnection) model. Router, switch, hub and bridge are networking devices that act as mediators at various levels of this networking model.

What are the differences in the design and functioning of these networking devices: router, switch, hub and bridge?
Every one of these network devices which we compare in the following is a part of every Large Area Network (LAN), Wide Area Network (WAN) or small private networks. They integrate and connect the network at various levels, while providing control over data flow.

The main differences in functionality of Router, Switch, Hub and Bridge
A computer network connected to the Internet is designed to be a self-regulating network that can guarantee the transmission of data to right destinations and regulate overall data transfer. The network can be primarily divided into two types of devices which are terminals (connected computers) and control elements or connecting devices. The role router, switch, hub and bridge play in a computing network determines their basic functionality and difference.

Two or more computing networks are connected together by a router. It is charged with the responsibility of controlling the inter network data traffic. They are highly intelligent devices with embedded software that are used to control the flow of data packets across diverse networks.

A network switch is charged with the job of connecting smaller segments of a single network into a connected whole. They are extensively used in Ethernet local area networks.

A hub connects various Ethernet devices to integrate them into a whole network segment. It is one of the most basic hardware devices that connect two or more Ethernet terminals in a network.

A network bridge is nothing more than a type of switch. While a switch has multiple connection ports, a bridge has a single connection port. In the next section, let us have a look at the features of each one of these devices in more detail.

Referring to OSI model layers, a router is functional on the network layer of the OSI model, which is also known as level 3. They integrate logical subnet together and their operation is made possible by inbuilt operating systems. They are designed to calculate the best possible path for transmission of data packets between networks. The basis for routing of data through a router is the use of Internet protocol addresses. You might want to check out the OSI model diagram to understand the functions of these devices better.

Network switches are functional on the layer 2 of the OSI model. This layer is often referred to as the data link layer. Network switches transfer data across a network segment using MAC addresses for reference.

A hub operates only at layer 1 level of OSI model, which is the physical layer. Integrating Ethernet terminals together is its only function and it is a passive device used for data transfer. A bridge is just a type of network switch that connects two network segments together. Like switches, they too operate at the data link layer.

All these networking devices provide connectivity and help regulate Internet traffic through local and global Internet networks. Tips of identifying what are main networking hardware help you know the role and function of router, switch, hub and bridge in a network. So which network equipment you select depends on what you need in your home network or business network.

More Related:
Common basic networking devices:
Router: a specialized network device that determines the next network point to which it can forward a data packet towards the destination of the packet. Unlike a gateway, it cannot interface different protocols. Works on OSI layer 3.

Bridge: a device that connects multiple network segments along the data link layer. Works on OSI layer 2.

Network Switch: a device that allocates traffic from one network segment to certain lines (intended destination(s)) which connect the segment to another network segment. So unlike a hub a switch splits the network traffic and sends it to different destinations rather than to all systems on the network. Works on OSI layer 2.

Hub: connects multiple Ethernet segments together making them act as a single segment. When using a hub, every attached all the objects, compared to switches, which provide a dedicated connection between individual nodes. Works on OSI layer 1.
   
Repeater: device to amplify or regenerate digital signals received while sending them from one part of a network into another. Works on OSI layer 1.

Some hybrid network devices:
Multilayer Switch: a switch which, in addition to switching on OSI layer 2, provides functionality at higher protocol layers.
   
Protocol Converter: a hardware device that converts between two different types of transmissions, such as asynchronous and synchronous transmissions.
   
Bridge Router (B router): CombineS router and bridge functionality and are therefore working on OSI layers 2 and 3.

Hardware or software components that typically sit on the connection point of different networks, e.g. between an internal network and an external network:
Proxy: computer network service which allows clients to make indirect network connections to other network services
   
Firewall: a piece of hardware or software put on the network to prevent some communications forbidden by the network policy
   
Network Address Translator: network service provide as hardware or software that converts internal to external network addresses and vice versa

Other hardware for establishing networks or dial-up connections:
Multiplexer: device that combines several electrical signals into a single signal
   
NetworkCard: a piece of computer hardware to allow the attached computer to communicate by network
   
Modem: device that modulates an analog "carrier" signal (such as sound), to encode digital information, and that also demodulates such a carrier signal to decode the transmitted information, as a computer communicating with another computer over the telephone network
   
ISDN terminal adapter (TA): a specialized gateway for ISDN
   
Line Driver: a device to increase transmission distance by amplifying the signal. Base-band networks only.

Tuesday, August 30, 2011

Social Media Integration Brings Your Business into a Digital Era

Social mass media is evolving inside a special way, and each day we're introduced having a survey that demonstrations the influence of communal networking channels like Facebook, Twitter, YouTube, LinkedIn, Google Plus, Blogs, area boards and other people on tiny and big establishments alike. Communal mass media is transforming organization in each way. Organization designs are altering with a whole lot more access, option and maturity inside cloud or within the SaaS platform.

Thus communal mass media not merely transforms makes and also influences the brand/customer partnership like no other conversation system employed previously. it is merely about discovering the very best solution to connect having a customer. Using the sluggish economy, consumers are turning into a whole lot more careful within their method and would like to be far better informed prior to they use a provider or acquire a product. They’ve got entry to some plethora of data that is usually sourced online.

Businesses have moved to exploit communal mass media to achieve a market that was untapped before. Communal mass media is bound to consume all locations of promotion plan due to its ambiguity and ubiquitous nature. But how precisely organizations will go about capturing data dispersed over several communal mass media programs is anyone's guess.

There is absolutely nothing new inside communal mass media we're using. it genuinely is the exact same content material which has been in use: images, audio, movie and text. it genuinely is how we make use of it and available up new channels of communication.

Take the promotion Initiative
Instead of considering of communal mass media as being a technology, believe of it as being a conversation resource wherein you maybe can get in touch using the consumer and develop a extended phrase relationship. It is simple: shifting conversations to some distinct medium; enabling for less difficult updating of content; and reaching a wider audience.

Every group requires a communal mass media implementation and integration framework.
a) Managing content material Aggregation – in the onset, establishments should far better comprehend marketplace conduct and interaction inside of their marketplaces. Deploying yahoo and Google Alerts, Twitter Search, Radian6, and PR Newswire's communal mass media Metrics to monitor conversations and situations connected with critical terms assists in knowing the marketplace better.

b) Market response – dependent within the responses to their content material on these communal mass media sites, organizations can react and increase the content, define long term launches or engagements and connect.

c) Information Analytic Metrics – It is mainly a handled provider for several communal mass media channel checking and reporting action to have the ability to display the trend, in most cases inside type of friends, followers, conversations, visitors and reach.

d) Business Integration– Any division afflicted by outer action will ultimately socialize. Organizational transformation will gravitate in the route of a top-down hierarchy of policy, education, and empowerment over the whole group and offer on-going assist for content material improvement and area creating initiatives. business integration back links communal analytics with present CRM and BI tools.

Incorporating communal mass media options into your client's or company's present content material plan won't need to be considered a unpleasant process. By hearing and observing the responses and interactions with the customer, we could contact within the suffering points, resource new ideas, foster improvements, find out and integrate a sensation of function into our communal mass media programs, thereby opening the doorway to new possibilities.

Any particular person or group that sells goods(such as Cisco network equipment) or provides providers(take Cisco supplier for an example) ought to worth available conversation as being a goal. In case your customer or provider won't have one, communal mass media integration may be a great commencing point.

Wednesday, August 17, 2011

Cisco education survey releases


Cisco recently announced results from its International Education Survey of 500 education administrators and information technology officials from 14 countries.

More than 75 percent of those surveyed believe technology can play a significant role for students and educators, but a major concern for 83 percent of those surveyed is preparing students to find proper employment in the global economy.

Also, 85 percent see technology playing a major role in how students learn, and 86 percent feel students should develop collaboration and communication skills.
 

"I am gratified to see that new technologies, such as collaboration and video, are globally increasing in importance in education, as they can open the door to a world of opportunities for students, regardless of socio-economic status or geographical location,” said U.S. public sector director of education at Cisco Renee Patton.

A recent survey of 100 information technology companies by BDO USA provides a positive outlook for IT-related jobs. The survey revealed 46 percent of the companies plan to hire more staff in 2011, while only 7 percent of those surveyed expect to decrease IT staff.

IT is so important and Cisco is the leading IT innovation. So Cisco create so many Cisco institute or colleague in different countries. They invest much money in CISCO and IT education. Why? I think the gain will exceed more than pay. It makes the people in one country know cisco and grasp cisco technology. Then their products will be accepted and chosen as priority. This is really very smart way to solidify their IT leading status.

(from:http://www.newhorizons.com/content/800465832-detail-cisco-releases-education-survey.aspx