Once you’re learning for your CCNP certification, Specifically the BSCI Examination, you need to get a solid idea of BGP. BGP isn’t only one of the most significant topics to the BSCI exam, it’s one of the most important. BGP has a great quite a few facts that have to be mastered for BSCI achievements, and those of you with a person eye within the CCIE ought to find out the basics of BGP now so as to Construct on Those people fundamentals in a afterwards time.
Route characteristics are a novel function of BGP. With interior gateway protocols such as OSPF and EIGRP, administrative distance is used to be a tiebreaker when two routes to a similar location experienced different upcoming-hop IP addresses but exactly the same prefix size. BGP works by using path characteristics to create this decision.
The initial attribute viewed as by BGP is excess weight. Bodyweight is usually a Cisco-proprietary BGP attribute, so when you’re Operating within a multivendor ecosystem it is best to do the job with another attribute to impact path collection.
The weight attribute is critical only for the router on which it is transformed. In case you established a higher pounds for a specific route as a way to give it desire (a higher excess weight is most popular more than a lessen one particular), that bodyweight isn't advertised to other routers.
BGP employs groups for example “transitive”, “non-transitive”, “necessary”, and “optional” to classify characteristics. Considering that pounds is really a regionally considerable Cisco-proprietary attribute, it does not all into any of these classes.
The weight is usually adjusted on only one route through a route-map, or it might be established for a unique excess weight 토토 for all routes received from a supplied neighbor. To change the excess weight for all incoming routes, use the “bodyweight” possibility Together with the neighbor command soon after forming the BGP peer relationships.
R2(config)#router bgp one hundred
R2(config-router)#neighbor a hundred.1.one.one distant-as ten
R2(config-router)#neighbor a hundred.one.one.1 excess weight two hundred
Mastering the entire BGP attributes, along with when to rely on them, can seem an awesome process if you very first start off studying on your BSCI and CCNP tests. Split this endeavor down into smaller elements, master one particular attribute at a time, and shortly you’ll hold the BGP characteristics mastered.