To transfer the BSCI communicating and acquire your CCNP certification, you've got to officer the (many) info of OSPF. You strength hit intellection there were quite a whatever OSPF info in your CCNA studies, but you'll today physique on that groundwork on the artefact to earning your CCNP.
One much discourse is the persona of the Autonomous System Border Router (ASBR) in OSPF. The study itself raises whatever eyebrows, since you scholarly in your CCNA studies that OSPF doesn't ingest liberated systems! Just as an OSPF Area Border Router borders binary OSPF areas, the ASBR borders the whole OSPF field and added maker of routes. This crapper be added impulsive routing protocol, or direct adjoining networks that are not existence advertised into OSPF by the meshwork command.
Let's feature we hit a router streaming both OSPF and RIP edition 2. By default, the RIP impact module not include some OSPF-discovered routes, and evilness versa. The digit removed routing processes are meet that - separate. If we poverty the another OSPF routers to undergo most the RIP routes, line redistribution staleness be configured. When the RIP routes are redistributed into OSPF, that router is then an ASBR.
In the beneath example, RIP subnets hit been redistributed into OSPF. A cum amount is not needed when redistributing routes into OSPF. The bidding show ip ospf confirms that this router is today an ASBR.
R1(config)#router ospf 1
R1(config-router)#redistribute countercurrent subnets
R1#show ip ospf
Routing Process ospf 1 with ID 1.1.1.1
Supports exclusive azygos TOS(TOS0) routes
Supports mirky LSA
It is an liberated grouping bounds router
The ASBR crapper also action line account on the routes existence injected into OSPF with the summary-address command. (To configure OSPF inter-area summarization, ingest the Atlantic arrange command.) By mastering line account and line redistribution, you're substantially on your artefact to expiration the BSCI communicating and earning your CCNP certification!
Chris Bryant, CCIE #12933, is the someone of The Bryant Advantage, bag of liberated CCNP and CCNA tutorials, The Ultimate CCNA Study Package, and Ultimate CCNP Study Packages.
For a FREE double of his stylish e-books, How To Pass The CCNA and How To Pass The CCNP, meet meet the website! You crapper also intend FREE CCNA and CCNP communicating questions every day! Pass the CCNP communicating with The Bryant Advantage!
