BGP is One of the more advanced topics you’ll analyze when pursuing your CCNP, Otherwise the most advanced. I'm sure from individual working experience that when I was earning my CCNP, BGP is The subject that gave me essentially the most issues at the beginning. One thing I maintain reminding nowadays’s CCNP candidates about, however, is that no Cisco technology is impossible to know if you simply crack it down and realize the basic principles Before you begin striving to understand the greater elaborate configurations.
BGP characteristics are just one these kinds of subject. You’ve bought perfectly-identified required, nicely-acknowledged discretionary, transitive, and non-transitive. Then you certainly’ve obtained Each and every unique BGP attribute to recollect, along with the purchase where BGP considers attributes, and what characteristics even are… plus a lot more! As with all other Cisco matter, we should walk ahead of we will run. Allow’s Check out what attributes are and what they do in BGP.
BGP attributes are very similar to what metrics are https://en.search.wordpress.com/?src=organic&q=먹튀검증 to OSPF, RIP, IGRP, and EIGRP. You won’t see them detailed in a routing table, but attributes are what BGP considers When selecting the ideal path into a spot when various legitimate (loop-no cost) paths exist.
When BGP has to decide in between these paths, there is an order by which BGP considers The trail characteristics. For fulfillment over the CCNP exams, you have to know this get. BGP seems to be at path attributes Within this purchase:
Greatest body weight (Cisco-proprietary BGP benefit)
Maximum area choice (LOCAL_PREF)
Desire regionally originated route.
Shortest AS_PATH is most popular.
Pick route with cheapest origin code. Inner paths are preferred around external paths, and exterior paths are favored around paths by having an origin of “incomplete”.
Most affordable multi-exit discriminator (MED)
External BGP routes most well-liked above Interior BGP routes.
If no external route, decide on path with cheapest IGP cost to the next-hop router for iBGP.
Decide on 먹튀검증 most recent route.
Choose most affordable BGP RID (Router ID).
In case you don’t know what these values are, or how they’re configured, don’t panic! The subsequent a number of elements of this BGP tutorial will describe all of it. So invest some time researching this buy, and partially II of this cost-free BGP tutorial, we’ll examine Every of these values intimately. Keep studying!