BGP is Probably the most sophisticated subject areas you’ll review when pursuing your CCNP, if not probably the most elaborate. I understand from individual practical experience that when I was earning my CCNP, BGP is the topic that gave me probably 먹튀검증 the most hassle in the beginning. Another thing I keep reminding nowadays’s CCNP candidates about, although, is no Cisco technological innovation is impossible to understand if you only crack it down and comprehend the basics Before you begin attempting to understand the more elaborate configurations.
BGP characteristics are one this kind of subject matter. You’ve obtained effectively-regarded obligatory, nicely-known discretionary, transitive, and non-transitive. You then’ve acquired Every single unique BGP attribute to remember, plus the get through which BGP considers attributes, and what characteristics even are… and also a whole lot far more! As with any other Cisco subject, we have to wander before we can run. Enable’s take a look at what characteristics are and what they do in BGP.
BGP characteristics are http://edition.cnn.com/search/?text=먹튀검증 much like what metrics are to OSPF, RIP, IGRP, and EIGRP. You received’t see them detailed inside a routing desk, but characteristics are what BGP considers When selecting the best path into a spot when multiple legitimate (loop-free) paths exist.
When BGP has to choose involving these paths, You can find an purchase in which BGP considers the path attributes. For fulfillment about the CCNP examinations, you need to know this buy. BGP appears to be like at route attributes On this get:
Greatest weight (Cisco-proprietary BGP value)
Best neighborhood preference (LOCAL_PREF)
Desire domestically originated route.
Shortest AS_PATH is desired.
Pick route with lowest origin code. Inside paths are most popular over external paths, and external paths are chosen in excess of paths with an origin of “incomplete”.
Lowest multi-exit discriminator (MED)
External BGP routes preferred about Interior BGP routes.
If no exterior route, find route with lowest IGP Price to another-hop router for iBGP.
Choose most up-to-date route.
Select cheapest BGP RID (Router ID).
When you don’t determine what these values are, or how they’re configured, don’t panic! The subsequent a number of areas of this BGP tutorial will describe it all. So shell out a while learning this purchase, and partially II of the totally free BGP tutorial, we’ll have a look at each of these values intimately. Maintain learning!