Twitter, a very attractive website, offers a social networking and microblogging service, enabling its users to send and read messages called tweets. Tweets are text-based posts of up to 140 characters displayed on the user's profile page.
I knew twitter long ago, but I haven’t joint it until so many people play with it today. When my fiends talked twitter with me, celebrities, movies, entertainment, gossip, etc. I think that it is so fantastic to chat and share interesting and exciting things and experience on twitter. No matter who you are, just join it and share something, new world will be opened in front of you.
After I joined twitter, I feel that it gives me a new horizon, such as history, military, politics, literature, philosophy, technology, etc. so many professional people in the different fields can offer you enough info to help you know the world’s every aspect.
Some people usually like to ask each other: “Can you live today without twitter?” Oh, no, it’s hard to imagine the life without twitter. If you are a twitter fan, you know it.
Someone define “without twitter, the world will be like this” as the following drawing:
I am an editor, I deeply feel that to chat and share ideas with friends by tweeting are so important to me. Indeed, I can get some inspiration from someone’s twitter; for example, I need to find some news and details about Cisco, Cisco network product like Cisco router, Cisco switch, Firewall security, etc. When I have no idea about that, I can use twitter to find some friends who are experts of Cisco and Cisco networking equipment, to ask them about the Cisco’s details: Cisco is for what; what are router and switch used for; Do we need them in our daily life; how to use it. So no matter you are a personal, a group, or an enterprise, twitter is so necessary for you to connect you to outside world and others. Now, “Twitter or not today!” is becoming a fashion around us.
Tips: More related social websites: Facebook, Myspace, Friendster you should know.
According to networking giant Cisco Systems, the amount of Internet traffic worldwide will quadruple by 2015, driven by the explosion in the number of connected devices and connected people, the amount of video and faster broadband speeds. By 2015, network traffic will have quadrupled to 966 exabytes per year as a content hungry populace gains access to cyberspace on more than 15 billion network connected devices that, ironically enough, will outnumber people 2 to 1.
The projected increase of Internet traffic between 2014 and 2015 alone is 200 exabytes, which is greater than the total amount of Internet Protocol traffic generated globally in 2010. On the verge of reaching 1 zettabyte, which is equal to a sextillion bytes, or a trillion gigabytes by 2015, global IP traffic growth is driven by four primary factors, according to Cisco.
The proliferation of tablets, mobile phones, connected appliances and other smart machines is driving up the demand for connectivity, it said.
"The explosive growth in Internet data traffic, especially video, creates an opportunity in the years ahead for optimizing and monetizing visual, virtual and mobile Internet experiences. As architect of the next-generation Internet, Cisco stands ready to help our customers not only accommodate this rapid expansion of Internet activity through the evolution of their networks but also help them thrive as a result of it," said Suraj Shetty, vice president of worldwide service provider marketing, Cisco.
While not addressed in Cisco's report, the numbers are further cause for concern for arbitrary data caps with overage fees. According to Cisco, the average fixed broadband speed in 2015 will reach 28Mbps, up from 7Mbps in 2010.
Service providers also will have to deal with the blurring of the line between fixed and mobile traffic, as consumers increasingly expect to have the same experience on their mobile devices as they do on their PCs or connected televisions.
The same warnings are there for networking vendors, including Cisco, Webster said. They need to build technology that not only increases capacity and scalability, but also is more intelligent.
By projecting accelerated internet adoption, Cisco is implying associated growth in many other fields. How many industries are required to fuel telecommunications growth and how many are in turn impacted by it? It’s quite possible that Cisco VNI isn’t a vision for the future of internet traffic, but a vision of technology as a whole. If something as central as online activity is going to grow exponentially, then maybe the entirety of science and technology will come along for the ride.
More about Cisco and Cisco related…
Today, for business, satisfying and attracting customers is indispensable. That’s because customer requires better service and multifunctional products. Yet to meet customer’s need poses challenges. And the competition between counterparts is fierce. Because my work is related to Cisco, so I’d like to take Cisco as an example to analyze Cisco and its competitor Juniper.
Cisco was founded in 1984 and quickly became dominant. In its acquisitions, it focused on integrating marketing functions, not integrating the technology that it acquired. Cisco’s approach is based on multiple hardware boxes. Each hardware box runs proprietary software, and a different chip. For customers that has created huge complexity.
Juniper founded in 1996, the first serious challenge to Cisco. Jim Duffy notes in Network World that with the growing importance of the Internet, venture capitalists and unhappy Cisco customers invested a start-up in order to build a better mousetrap, specifically for service providers. Juniper’s first year was nurtured with early investments from the AT&T, Ericsson, Lucent, Nortel, Siemens/New bridge Networks, 3Com and UUNET. IBM agreed to develop custom chips for Juniper’s Internet routers.
Network Router Showdown: Cisco vs. Juniper
Cisco does have competitors, especially in sectors that crave speed. For example, when service providers like MCI/WorldCom, Sprint or AT&T update their infrastructure, they increasingly are choosing to buy from Cisco rival Juniper Networks (Nasdaq: JNPR). In fact, Liscom said, 23 of the 25 major service providers now use Juniper routers.
Juniper routers increasingly are being used in the infrastructures of governments' and financial institutions' intranets. According to her, Juniper boxes are purpose-built to handle new services, such as VPNs (Virtual Private Networks) that are tunneled over existing IP networks.
Operationally, both Cisco and Juniper routers are based on different hardware and software concepts. Cisco routers use Cisco IOS and Juniper routers use JUNOS.
Applications wise, both Cisco and Juniper cater to similar market segments. However, both have some advantages in certain areas compared to the other. Cisco, being the first to enter the market, has better market penetration. One of the strong areas of Cisco is the low-end router market including remote-office, and branch-office connectivity solutions. Both Cisco and Juniper provide high-end router solutions that offer gigabit transfers and advanced security routing solutions.
Cisco vs. Juniper, Tragedy or Comedy
From the analysis above we know that in fact both Cisco and Juniper have its own advantages in the market. The research and targeted consumer are little different, they share different markets. No winner, just comedy.
Notes: Cisco is famous for designing and manufacturingCisco routers, Cisco switch, and firewall security for enterprises, offering professional and best networking solutions for network users. More about Cisco and Cisco network equipment you can go to Cisco.com.
Cisco, famous for supplying all kinds of network equipment and flexible networking solution for small to large business, definitely, is the premier network gear provider worldwide. Owning large numbers of fans, Cisco is always proud of providing the platform for campus, branch, data center, and wide-area networks that are highly available while integrating security at all levels of the network, helping to ensure the optimized delivery of application and communications, and providing inherent manageability. How to achieve it? Why Cisco? Let’s figure out what makes Cisco become NO.1 in the networking solution and device.
Several reasons help Cisco to be the computer networking giant
Cisco hardware is extremely reliable and Cisco has an excellent history in helping diagnose and fix any software issues with their equipment. Cisco offer 24*7*365 support which covers technical support and advanced hardware replacement.
Managed switches provide remarkably better uptime as a result of enhanced diagnostics, allowing trained engineers to isolate network problems in a fraction of the time required with old-fashioned hunt and pluck troubleshooting. Router management features allow sophisticated configuration, utilization tracking, and diagnostics. Advanced features, like BGP enable non-stop Internet connectivity, and really separate Cisco from the pack.
Cisco solutions easily scale from Small Business Start-ups that want reliable managed workgroup switches to Enterprise-class Corporations that demand flawless uptime, need secure wireless networks, managed layer 2 and 3 switches, dependable routing, firewalls, intrusion detection systems, and the software to manage it all.
Wide range of Cisco network products are offered, including routers, switches, VPN concentrators, wireless, firewalls, IP Phones VOIP, etc. Satisfying Cisco fans by providing various Cisco network equipment and solutions.
Cisco provides legendary interoperability, providing real assurance that your investment in Cisco gear is ready for whatever tomorrow brings.
Enterprise Class Features
Depends on the router capabilities and the IOS image you have, you can have an enterprise class features in your LAN. Advance firewall system, Intrusion Detection System, Multicast handling, VoIP, all of that you can have just by upgrading your Cisco routers later when your company got bigger.
Compared with other manufacturers, Cisco suppliers often provide a very competitive price of Cisco network equipment. New, refurbished and used Cisco routers, switches, firewall security, and so on, all different Cisco items are offered on the market for you to choose. If you want to save money, used and refurbished Cisco network products is not a bad choice.
Nowadays, business requires a network platform that enables technology innovation and business-critical services across the entire network. Cisco has ability to provide an end-to-end network platform tied together by a common infrastructure and a common operating system, and manageable as a single, cohesive entity. Why choose Cisco? That’s it.
There are several types of routers you may hear of: wired router, wireless router.
More detailed classification: Internal router (IR): All interfaces belong to the same area; Area Border router (ABR): Interfaces to multiple areas; Backbone router (BR): Interfaces to backbone; Autonomous system boundary router (ASBR): Exchange routing info with other autonomous systems; Designated router (DR): Generates link-state info about the subnet; Backup designated router (BDR): Becomes DR if DR fails.
If you use computers in your home or office, it is likely that your computer is connected with other computers through some type of router. Like a police officer directing traffic at an interchange, a router will direct or route information, data and files to the locations they need to go. Generally, Routers that we used can either be wired or wireless.
A wired router will generally connect to your computer and computers or hardware through an Ethernet cable. This happens with the use of output ports. And the only input port provided on a router will be used for the Internet.
A wireless router may allow access from several computers through wired Ethernet cables and through wireless connections. You will know the router you are using is wireless if it comes with an antenna. The antenna will provide the router with a specific range that allows other computers in the area with wireless capabilities to access the router, provided they have password access.
Two Typical Routers We Usually Used
If you have ever been to a coffee shop or hotel that offers Wi-Fi access, chances are they are using a commercial-grade router. These routers are much more powerful than what you would purchase at your local electronics or computer store. The best commercial routers will be able to provide access to the Internet, files and printing, for example, with little problem. Commercial routers may also be used by businesses, hospitals or in a university setting as part of a wide area network or WAN. (Cisco is a leading router manufacturer to aim to provide router and networking solution to small, medium and large enterprises) This is a network that allows computers to connect to each other even if they are in another building across town. The commercial-grade router will be used to connect with the wide area network (WAN) on one side and a smaller network called a local area network (LAN) on the other. The local area network may consist of one large office within a building. In that case, you could have multiple LANs connecting to the WAN through one or multiple routers.
If you are looking for a router for your home or small business, you likely can find what you need at your local electronics store. Generally you will want a router that serves as a wireless access point (WAP). It should also be a network switch. The wireless access point (WAP) basically provides the wireless access that everyone wants. That wireless access can be both to the Internet and to other computers in the home or office. Routers that come with a network switch tend to be faster and provide more evenly distributed bandwidth to each port. Consumer routers will come in a variety of price ranges and strengths. Some of the lower priced consumer routers will not have a very strong firewall. (Cisco Linksys E-series routers, powerful home routers, are welcomed by a lot of Cisco fans, more info of Cisco’ home product store you can visit Cisco’s official site: cisco.com).
Internet colors and changes the world by broadening our horizon and connecting people around the world together.
Referring to network, some networking devices and equipments you must know. These are router switch and hub, which are all computer networking devices that let you connect one or more computers to other computers, net to other nets. Each has two or more connectors called ports into which you plug in the cables to make the connection.
How are data transfer and the implementation of networking protocols made possible in this powerful network? It is made possible because of networking devices that regulate data traffic over the whole network, providing connectivity and control. 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.
After getting the general knowledge of router, switch and hub, you may are confused with these three devices. If they are all networking equiments that act as mediators at various levels of this networking model. What is the difference among them? Let’s do that and check it out.
The first is router, which connect two or more computing networks together. It is a highly intelligent device with embedded software that are used to control the flow of data packets across diverse networks, and charged with the responsibility of controlling the inter network data traffic.
A 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.
The last one, hub, connecting 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.
More features of router, switch and hub
Router: Functional on the network layer of the OSI model, and it 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.
Switch is 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.
Among these three networking devices, hub is gradually less used, and the most popular today is router. How much you get from this analysis?
If you need a router or switch, the following table of comparison between router and switch make you clearer.
More expensive than hubs or switches
Costlier than hubs
Cisco, Juniper Networks, Belkin, Extreme Networks, Huawei, Netgear
Cisco, Sun Systems, Oracle, Belkin, Linksys, and Net Gear, Huawei
Routers connect two or more logical subnets, which do not necessarily map 1-1 to the physical interfaces of the router.
Network switches inspect data packets as they are received, determining the source and destination device of that packet, and forwarding it appropriately
A router is a piece of hardware tailored to the tasks of routing and forwarding information. Routers generally contain a specialized operating system, RAM, NVRAM, flash memory, and one or more processors, as well as two or more network interfaces.
A way of routing electricity and data flow patterns through circuits based on binary decisions
Routers operate at Layer 3 (Network) of the OSI model.
Network switches operate at layer two (Data Link Layer) of the OSI model.
Rate of Collision:
Switch having a connection that can carry both transmitted and received signals at the same time that we know this as a full-duplex communications. This will reduce or minimizes the possibility of collisions.
It’s not a secret for all that Cisco is restructuring its consumer market, including giving up flip video camera business, bracing for its biggest layoffs, refocusing on Cisco’s core networking, integratng Cisco umi into the company's Business TelePresence product line, assessing core video technology integration of Cisco's Eos media solutions business….
Also Cisco claimed that it would exit aspects of its consumer businesses and realign the remaining consumer business to support four of its five key company priorities – core routing, switching and services; collaboration; architectures; and video. As to this innovative and constructive programs, John Chambers, Cisco chairman and CEO, explains that Cisco‘s key, targeted moves in support of its network-centric platform strategy will help Cisco and its service provider customers optimize and expand their offerings for consumers, and help ensure the network's ability to deliver on those offerings.
Well, more benefits or more disadvantages Cisco refocus on its core technology, which means that it will provide better networking solutions and services for its target enterprises, have more potential partners to realize its projects. Just like losing weight, Cisco is cut down its consumer business that seems not bring better profits and improve its core technology. So for this aspect, it’s not bad news for Cisco and enterprise. And for personal consumer, although it cannot enjoy the further surprise by upgrading flip video camera, they also can get more advantages from networking innovation.
Who will benefit more or more disbennifit? Less or more? It depends on whether those restructuring measures become effective or bring practical effects? Let’s looking forward to it!
Cisco is the worldwide networking leader that design and manufacture network equipment, provide networking solutions and services for home and enterprise. Its main products like Cisco router, Cisco switch, Cisco firewall security, etc. solve a lot of enterprises’ networking issues.
Cisco is never giving up innovation, so it is always upgrading its core technology to bring more professional networking solutions and better network services to our CISCO users and enterprise. Recently, exactly, June, 2011, to help service providers meet the rising tide of traffic generated and to help businesses make the transition to IPv6, Cisco’s newly released Visual Networking Index Forecast (VNI) marks the beginning of what the company calls the "Zettabyte Era," and its new ASR 9000 Series aggregation-services routers.
The new Cisco ASR 9000 system consists of the new Cisco ASR 9922 Router and high-density 10G and 100G interfaces for the network edge and the Cisco ASR 9000v for the network aggregation layer, as well as the existing Cisco ASR 9010 and Cisco ASR 9006 Routers.
Cisco on June 7 also introduced a new innovation called nV (network virtualization) technology, which was created to make network management easier and grow capacity by collapsing the network edge, aggregation and access layers into a single ASR 9000 system.
According to Cisco officials, the new ASR 9000 system combined with the nV technology offers 36 times the capacity of other competing products at 96 terabits per second. With such capacity, users could stream recordings of all Super Bowls, World Cup and Cricket World Cup matches in less than a second, or download 180,000 DVDs every minute, the vendor said.
The combination also means operating cost savings of up to 70 percent compared with competing edge platforms, simplified IPv6 transition and support for Cisco’s Videoscape technology.
More Facts about the ASR 9000 system:
Network simplification and savings are achieved through plug-and-play capabilities, singular point-of-service management using Cisco Prime for Internet Protocol Next-Generation Network (IP NGN), cost-effective configurations and ease-of-deployment features. This capability is available to the more than 500 existing Cisco ASR 9000 customers via an upgrade.
Cisco Videoscape technology is supported with the Cisco Integrated Service Module for caching, streaming and monitoring to optimize and monetize the video experience.
From Official Cisco
The Cisco ASR 9000 Series can be positioned for the following applications:
Residential any-play services, including cable, DSL, Passive Optical Network (PON), and Ethernet to the X (ETTx)
Business Layer 2 VPN and Layer 3 VPN services
Video service-delivery networks
According to Cisco, the ASR 9000v product is available now, with the ASR 9922 becoming available early next year. But existing customers won’t have to deploy all new gear to take advantage of Cisco’s new virtualization technology. Cisco says the 500 operators who have already bought ASR 9000 gear will be able to introduce the intelligence with a simple upgrade.
The company already has several customers for the technology, including China Telecom, Cox Communications, Comcast and FastWeb. Verizon Wireless also uses Cisco's ASR 9000 routers.
Cisco has unleashed a world of hurt on its shareholders, masquerading as a consumer company that sells Flip phones, Umi telepresence, and Linksys routers. There's nothing wrong with selling gadgets to consumers. Apple does it brilliantly, and profitably. But Cisco isn't Apple.
In a sense, Apple might be a place where Cisco can find comfort in its time of trouble. People forget how screwed up Apple was in the 90s. The fact that Apple turned it around can provide a ray of hope to Cisco shareholders and the company's beleaguered CEO, John Chambers. If Chambers can keep his job.
Server and PC marker Dell has also had its share of problems in recent years – accounting scandals, poor sales execution, and exploding products – but of late, it has been on the upswing. It has had some success building custom servers for hyper scale data centers. It bought its way into the storage racket proper instead of just reselling other companies' kit (LSI and EMC, mainly). And it moved into services with its Perot Systems acquisition.
The rub is that Dell's networking business is no more real than its storage business used to be. It is merely rebranding kit from Brocade and others. Until Dell fixes that, it will not be a credible infrastructure stack player.
Meanwhile, Cisco has done a remarkable job building a server business out of nothing with its "California" Unified Computing System blade and rack servers – and with a fair amount of actual engineering – but it is not a profitable volume manufacturer any more than IBM was. Big Blue couldn't cut it in printers, memory, disk drives, and PCs, and Cisco is having trouble with anything other than core switches and routers.
One could argue that Cisco should not have entered the server market at all, but that is an over-simplified view. No doubt, the move into servers has not only annoyed Cisco's former partners in the server business, but compelled them to start selling their own networking products, either rebadged (from Brocade, Juniper, or Blade Network Technologies) or built with the help of ODMs (Sun and now Oracle does this, and so does Dell).
More about Cisco Switching Business
What is hurting Cisco's switching business? Mellanox, Juniper, Brocade, Extreme Networks, Arista Networks, and IBM can make faster and lower-cost top-of-rack switches, and there are cheaper alternatives to Cisco's end-of-row plain-vanilla Catalyst 6000 and converged Nexus 7000 switches.
Chambers (Cisco’s CEO) may believe that the price/performance of the Nexus 7000 compared to earlier Catalyst products is what is driving Cisco's switching biz down. But it is probably more accurate to say that Cisco's prices are too high relative to the competition.
Even though competitors shared a certain market, Cisco is still proud of its core offer and service. Every CISCO user knows that what Cisco attract him to choose it.
Related: Cisco owns a large number of popular Cisco switches among enterprise users. To serve enterprise better, Cisco instantly improve its service and networking solution. Now, let’s check some star Cisco switches: Cisco 2960, Cisco 3560, Cisco 3750, and Cisco 4500…which type you prefer to?