BGP is One of the more complex matters you’ll analyze when pursuing your CCNP, if not the most complicated. I am aware from individual knowledge that Once i was earning my CCNP, BGP is The subject that gave me probably the most difficulty in the beginning. Something I preserve reminding currently’s CCNP candidates about, although, is that no Cisco technological know-how is impossible to grasp if you only crack it down and realize the https://en.search.wordpress.com/?src=organic&q=먹튀검증 fundamentals Before you begin trying to grasp the more complicated configurations.
BGP characteristics are a single this sort of matter. You’ve obtained well-regarded required, properly-identified discretionary, transitive, and non-transitive. Then you certainly’ve bought Every particular person BGP attribute to remember, and also the order in which BGP considers attributes, and what attributes even are… along with a lot more! As with all other Cisco subject, we have to walk right before we could operate. Permit’s Examine what attributes are and the things they do in BGP.
BGP characteristics are very like what metrics are to OSPF, RIP, IGRP, and EIGRP. You received’t see them stated in a very routing table, but attributes are what BGP considers when choosing the top path into a place when numerous valid (loop-free of charge) paths exist.
When BGP has to decide amongst such paths, There's an get in which BGP considers The trail attributes. For achievement around the CCNP examinations, you have to know this get. BGP seems at route characteristics With this purchase:
Best body weight (Cisco-proprietary BGP value)
Maximum neighborhood preference (LOCAL_PREF)
Like locally originated route.
Shortest AS_PATH is most popular.
Pick route with cheapest origin code. Inner paths are most well-liked around external paths, and external paths are desired more than paths using an origin of “incomplete”.
Cheapest multi-exit discriminator (MED)
Exterior BGP routes favored over Inside BGP routes.
If no external route, pick path with cheapest IGP cost to another-hop router for iBGP.
Decide on newest route.
Opt for lowest BGP RID (Router ID).
Should you don’t know what these values are, or how they’re configured, don’t panic! The subsequent several aspects of this BGP tutorial will clarify all of it. So spend some time finding out this order, and partly II of the 토토사이트 absolutely free BGP tutorial, we’ll examine Each individual of such values in detail. Maintain researching!