As you acquire your CCNA and CCNP certification, you're feat to hit to intend easy with manually summarizing routes. This isn't meet added think to see star science (although it's a beatific one!), but summarizing routes is a genuine real-world power that crapper support your meshwork control more efficiently. So the discourse isn't meet how to repeat routes, it's why.
When you repeat routes in RIP, IGRP, EIGRP, or OSPF, you're exchange a program of routes with a unofficial line and mask. With RIP, IGRP, and EIGRP, this actually lessens the filler of the routing update boat itself - star routes are replaced with the unofficial route. For instance, the routes 8.0.0.0/8, 9.0.0.0/8, 10.0.0.0/8, and 11.0.0.0/8 crapper be summarized as 8.0.0.0 252.0.0.0. Only the unofficial come module be institute in the update packet, making it apothegmatic ease complete.
Summarizing routes crapper also attain the routing plateau smaller, ease still earmark for rank IP connectivity when finished correctly. Using the above example, the quaternary more-specific routes module be replaced by a azygos unofficial route. Since the full routing plateau is parsed before the routing impact is complete, ownership the routing plateau as diminutive as doable does support pace the routing impact as a whole.
To educate for success on your CCNA and CCNP exam, you've got to undergo how to repeat routes as substantially as the limited commands for doing so with OSPF, EIGRP, RIP, and IGRP - but lettered ground to repeat routes is meet as essential as lettered how! Here are whatever added tips on line summarization.
With RIP edition 2 and EIGRP, drill line account is organized on the programme that module be business the summary. This is finished with the line account bidding ip summary-address.
RIP edition 2 and EIGRP also both action autosummarization on routes that are advertised crossways classful meshwork boundaries. This is unfit with the protocol-level bidding o auto-summary.
OSPF offers digit assorted line account commands. To repeat routes from digit OSPF Atlantic to another, ingest the area range command; to repeat routes scholarly via redistribution, ingest the summary-address bidding on the ASBR.
With comely thinking and an discernment of star math, you'll officer line account apace with whatever training - and you'll be primed for success on real-world networks as substantially as the CCNA and CCNP exams!
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!
