BGP is The most complex subject areas you’ll examine when pursuing your CCNP, Otherwise probably the most intricate. I'm sure from personalized experience that when I was earning my CCNP, BGP is the topic that gave me one of the most difficulties at the beginning. Another thing I hold reminding nowadays’s CCNP candidates about, however, is the fact no Cisco technology is not possible to be familiar with if you simply split it down and understand the fundamentals before you start making an attempt to comprehend the greater complex configurations.
BGP characteristics are a person this kind of topic. You’ve obtained properly-identified necessary, well-recognized discretionary, transitive, and non-transitive. You then’ve bought Every person BGP attribute to keep in mind, along with the buy in which BGP considers characteristics, and what attributes even are… along with a large amount a lot more! As with every other Cisco topic, we really need to wander in advance of we could run. Permit’s take a look at what attributes are and what they do in BGP.
BGP characteristics are very similar to what metrics are to OSPF, RIP, IGRP, and EIGRP. You gained’t see them stated in a routing desk, but attributes are what BGP considers when choosing the top route to the destination when multiple valid (loop-cost-free) paths exist.
When BGP has to make your mind up amongst this kind of paths, There exists an buy wherein BGP considers The trail attributes. For fulfillment on the CCNP exams, you have to know this buy. BGP appears to be like at route characteristics 먹튀검증 Within this get:
Greatest fat (Cisco-proprietary BGP benefit)
Greatest area preference (LOCAL_PREF)
Want regionally originated route.
Shortest AS_PATH is most popular.
Select route with cheapest origin code. Inside https://www.washingtonpost.com/newssearch/?query=먹튀검증 paths are preferred in excess of exterior paths, and external paths are most popular about paths with the origin of “incomplete”.
Cheapest multi-exit discriminator (MED)
Exterior BGP routes preferred around Internal BGP routes.
If no exterior route, pick out route with most affordable IGP Expense to the following-hop router for iBGP.
Opt for most recent route.
Decide on most affordable BGP RID (Router ID).
When you don’t determine what these values are, or how they’re configured, don’t worry! The subsequent many elements of this BGP tutorial will reveal it all. So expend some time researching this purchase, and in part II of the free BGP tutorial, we’ll examine Just about every of these values in detail. Retain studying!