Posted by admin January - 25 - 2012 ADD COMMENTS

While many people believe that online video games can increase anti-social behaviors, violence, loss of communication skills, and even health issues, such as obesity, some critics seem to agree that online video games can help the game players increase hand eye coordination. In this sense, it seems to be that most critics have already recognized the beneficial effects of video games in their mind.

Online educational games provide game players brain training that can help them become even more intelligent. These games work by testing the cognitive functions of your brain, such as memory, reasoning, logical decision making, and so fort .Let’s visualize yourself working out at a local health club to get your body in shape, playing educational video games is just like taking your brain to the same gym to get mentally in shape.
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Posted by admin January - 20 - 2012 ADD COMMENTS

Data can be restored immediately to either the original server or an alternate server. Restores can also be redirected to an alternate physical location if the original office is no longer available. The server disaster recovery solution lies in having devices and technologies available which allow us to restart the vital information systems in a shorter time period than the estimated critical. These mechanisms, and all the associated plans of actions, are known as data disaster recovery.

Why should I have a data back up and recovery system!
By not having a data center disaster recovery plan, you are quite simply, putting your business at risk; don’t take chance with your vital data. Would you leave any other aspect of your business to chance? Not really. Always be prepared for a natural calamity or any disaster, don’t leave any if’s and but’s, leave no stone unturned when it comes to backing up your important data.

Care should be taken while selecting a data disaster recovery services. The reason being your computer backup systems are the core piece of every data center disaster recovery plan. That is why your computer backup system must posses the ability to accommodate online computer backups for the most efficient protection.
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Posted by admin January - 16 - 2012 ADD COMMENTS

Like TCP, BGP is connection-oriented. An underlying connection between two BGP speakers is established before any routing information is exchanged. This connection takes place on TCP port 179. As with EIGRP and OSPF, keepalive messages are sent out by the BGP speakers in order to keep this relationship alive.

Once the connection is established, the BGP speakers exchange routes and synchronize their tables. After this initial exchange, a BGP speaker will only send further updates upon a change in the network topology.

The IGP protocols that use Autonomous Systems, IGRP and EIGRP, require prospective neighbors to be in the same AS. This is not true with BGP. Routers can be in different Autonomous Systems and still exchange routes. The BGP neighbors do not have to be directly connected, and often are not, but do need to be able to reach the IP addresses they use in their neighbor statements.

A BGP peer that is in the same AS is referred to as an Internal BGP (iBGP) Peer, where a BGP peer in another AS is an External BGP (eBGP) Peer.

A sample iBGP configuration:

Router bgp 100

Neighbor 10.1.1.2 remote-as 100

A sample eBGP configuration:

Router bgp 100

Neighbor 10.1.1.2 remote-as 200

Cisco recommends that eBGP peers be directly connected, where iBGP peers generally will not be.

Before we get too much farther into BGP theory, let’s get a configuration started. You’ll use the router bgp command to configure a router as a BGP speaker. Right after that, the neighbor command will be used to identify this BGP speaker’s potential neighbors. (The terms “peer” and “neighbor” are interchangeable in BGP, but it’s the neighbor statement that is used to statically define neighbors. BGP is not capable of discovering neighbors dynamically.)

R1(config-router)#neighbor 172.12.123.3 remote-as 200

While almost all of the neighbor options are just that — optional — you do have to specify the BGP AS of the remote router. BGP has no mechanism to dynamically discover neighbors. Remember, BGP speakers do not have to be in the same AS to become peers. To verify that the remote BGP speaker has become a peer, run show ip bgp neighbor.

R1#show ip bgp neighbor

BGP neighbor is 172.12.123.3, remote AS 200, external link

BGP version 4, remote router ID 0.0.0.0

BGP state = Active

Last read 00:01:39, hold time is 180, keepalive interval is 60 seconds
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Posted by admin January - 14 - 2012 ADD COMMENTS

As history has progressed and technology has continued to advance, life has become full of more and more good things. Without a doubt, one of the best things that our society has gained from the advances of technology is communications.

Consider for a few moments all of the amazing forms of communications that have made your life easier and more full. First and foremost in many peoples minds is the telephone. Even if you like to write letters once in a while, can you honestly imagine if letter writing and telegrams were the only way to communicate with people? Think of the countless ways that having phones have improved worldwide communications. My telephone allows me not only to call my next-door neighbor but the communications a telephone allows also enables me to call a friend who has moved to Africa in just a few moments time.

If having the telephone doesn’t impress you enough, think about the way the internet has improved communications and many other aspects of your life. The internet has literally connected people from every corner of the globe by the simple click of a button or two. Our communications with people have become easier, more frequent, and faster. You can send a message to a business parter in Tokyo and receive a reply within mere seconds. Amazing.
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Tags : , Communications