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Cisco CCNP BSCI Exam Tutorial The BGP Attribute MEDYour BSCI exam and CCNP certification success depend on mastering BGP, and a big part of that is knowing how and when to use the many BGP attributes. And for those of you with an eye on the CCIE, believe me - you've got to know BGP attributes like the back of your hand. One such BGP attribute is the Multi-Exit Discriminator, or MED. CIsco CCNP BSCI Exam Tutorial Introduction To Policy Routing CIsco CCNP / BSCI Exam Tutorial: Introduction To Policy Routing Policy routing is a major topic on your BSCI exam, and youll find quite a bit of policy routing going on in todays production network.. Origin IGP, localpref 100, valid, external 234 172.12.123.2 from 172.12.123.2 (2.2.2.2) Origin IGP, localpref 100, valid, external, best R1 is using 172.12.123.2 as the next-hop to enter AS 234. If all values are left at their default, we could have 100 routes being advertised from AS 234 to AS 1 and the next-hop would remain the same. We can configure R2 and R3 to send different MED values to R1, and the router sending the lowest MED would be the preferred next-hop. (The MED is a metric, and the lowest metric is always preferred.) We'll configure the MED attribute on both R2 and R3, sending a MED of 200 from R2 and 100 from R3. R2(config)#route-map SET_MED_200 permit 10 R2(config-route-map)#set metric 200 R2(config-route-map)#router bgp 234 R2(config-router)#neighbor 172.12.123.1 route-map SET_MED_200 out Cisco CCNA Exam Tutorial The Best Time To Schedule Your Exam Cisco CCNA Exam Tutorial: The Best Time To Schedule Your Exam In preparing for CCNA exam success, one of the basic steps is to schedule your exam! And when should you do that? Schedule your exam NOW.. R3(config)#route-map SET_MED_100 permit 10 R3(config-route-map)#set metric 100 R3(config-route-map)#router bgp 234 R3(config-router)#neighbor 172.12.123.1 route-map SET_MED_100 out After clearing the BGP table on R1, R1 will still see both next-hop addresses and will still consider both to be valid, but the path through R3 will be selected due to its lower metric. Just keep in mind that the MED is actually a metric, and lower metrics are more desirable in path selection. That will put you one step closer to passing the BSCI and earning your CCNP Certification! Chris Bryant, CCIE #12933, is the owner of The Bryant Advantage, home of freeCCNP andCCNA tutorials, The Ultimate CCNA Study Package, and Ultimate CCNP Study Packages. You can also join his RSS feed and visit his blog, which is updated several times daily with new Cisco certification articles, free tutorials, and daily CCNA / CCNP exam questions! Details are on the website. For a FREE copy of his latest e-books, ,How To Pass The CCNA, and ,How To Pass The CCNP,, just visit the website! You can also get FREE CCNA and CCNP exam questions every day! Pass theCCNP exam with The Bryant Advantage!
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