Cisco CCNP Certification: Introduction To BGP
Telepresence News and Events October 1st, 2008
WOW! What an amazing month for the Telepresence Industry! First off, did anyone see the Cisco TelePresence Human Network commercials that are airing during this seasons NFL Football games? A great sign that public adoption of Telepresence is near.
In other news from the 24/7 Telepresence Breaking News reel at the Telepresence Forum, BT announced that they’ve launched their inter-company Telepresence solution, Proctor & Gamble implemented new Telepresence rooms, Polycom received a “Rising Star” for their innovations and Verizon Teamed with Cisco to offer new productivity enhancing services using Cisco’s collaboration portfolio. Did I mention this was just a few of the Telepresence highlights from this past week? Hundreds of Telepresence news articles hit the wire this last month, and if the past is any indication of the future, we’ll see those Telepresence news posts double by Spring 2009.
I also noticed that companies like Digital Video Enterprises, Telepresence Options and of course our Telepresence Forum were listed in the Open Directory Project at www.DMOZ.org. Pretty big news considering Telepresence didn’t exist, or even have a category just a month ago or so in the human edited ODP.
Our website traffic amongst our 345+ Telepresence related domains has tripled since early August, another indication that Telepresence is getting ready to explode onto Main Street. People are “hearing” of it, people are “researching” it, and once they’ve performed their due diligence, they’ll “see and feel” what the pioneers of the Telepresence industry have been saying. Telepresence is near; Telepresence is here.
Well that’s it for now Readers. We hope you stop by the Telepresence Forum to learn a little about what the differences between plain old video conferencing and Telepresence are. C'mon by, sign up (free by the way), watch a Telepresence video or two, and drop us a line or comment with your Telepresence thoughts and experiences.
Take care , hope to see you on the Forum!
Your Editor and Administrator - L II
"Ride on the Next Plane of Existence" TM
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Cisco certification candidates are introduced to BGP at the CCNP level, but the reaction to its introduction always reminds me of something I see often as the CCNA level.
Whenever I teach distance-vector protocols in my Ultimate CCNA Boot Camp or Fast Track classes, I make sure my students understand the many rules of distance-vector routing thoroughly. After that, we move on to OSPF and link-state routing.
And what do I tell my students before we move on to OSPF and link-state? "Take all that great stuff you just learned about distance-vector routing and put it aside, because none of it applies here!"
That's about the time I get astonished looks and a few things thrown at me. :)
What's this got to do with BGP? Well, when you start studying BGP, you have to put a lot of preconceptions aside. It sounds like just another routing protocol, like RIP or OSPF, but it's not.
So... before we start studying BGP and looking at some of its many features, let's take a look at what BGP is and what it's not.
What BGP Does And Who Uses It
If you're in a position where you're used to seeing or working with routing protocols such as EIGRP and OSPF, you're probably now working with BGP. BGP is not a protocol you're going to configure at the office LAN. BGP is used to connect autonomous systems, which are very large "collections" of networks. (Those of you who have studied IGRP and EIGRP are familiar with the concepts of an AS.)
As opposed to routing protocols such as EIGRP and OSPF, BGP is an exterior routing protocol. BGP is not used to find a specific network instead, it's used to find the AS where that given network can be found.
A good way to look at it is that networks are contained in Autonomous Systems BGP helps you find the AS where a given network is found. Routing protocols such as OSPF and EIGRP take it from there.
BGP Terminology
You'll be happy to know that BGP has a terminology all its own. Well, you might not be happy about it, but it does! I'm not going to throw a bunch of terms at you right now, since these terms are better introduced to you when you can see what they do. Having said that, here are a couple of basic BGP terms that will help you make the transition from IGPs to BGP.
aggregation - This is just the BGP term for summarization. You're familiar with route summarization from your CCNA studies, and if not, it's time for a review from my Ultimate CCNA Study Guide. I told you you'd be using those skills for a long time!
IGP - Interior Gateway Protocol. These are routing protocols that run within an Autonomous System, such as OSPF and EIGRP.
EGP - Exterior Gateway Protocol. Remember from your CCNA studies that EIGRP routes are indicated by the letter "D" in your routing table? Ever wonder why? EGP, that's why. Run show ip route and take a look at the routing table key. EGP was BGP's predecessor, and is still in the routing table. EGP was there before EIGRP, so that's why "E" in the routing table doesn't indicate an EIGRP route.
We'll be adding to this list a great deal in the next few weeks.
Now that you've got a grasp on the differences between BGP and the IGPs you've been working with up to this point, it's time to start looking at some basic BGP concepts and configurations. Look for Part II of this BGP tutorial over the next few days!
To your success,
Chris Bryant
CCIE #12933
Chris Bryant, CCIE #12933, is the owner of The Bryant Advantage. The Bryant Advantage sells the world's best CCNA Study Guide in PDF format for only $15 and is the ONLY company specializing in CCNA and CCNP rack rentals, allowing candidates for these certifications to gain vital hands-on experience with full racks of Cisco routers and switches with labs and prices designed just for them. In April, you can purchase full days for only $10 each!There are also plenty of FREE CCNA and CCNP tutorials! Visit his site at http://www.thebryantadvantage.com today!
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Telepresence 101 - All Telepresence, all the time. Telepresence 101
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Telepresence.cc - Telepresence vs. Video Conferencing
Telepresence Report - 24/7 breaking Telepresence related news and information
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