After you’re planning to move the BSCI Test and receive your CCNP certification, among the largest issues is Mastering BGP. BGP is completely distinct from any protocol you learned to receive your CCNA certification, and one of several variations is the fact BGP uses route attributes to favor 1 path more than One more when many paths to or from a location exist.
Notice I claimed “to or from”. In before free of charge BGP tutorials, I talked about the BGP characteristics “excess weight” and “neighborhood desire”. These attributes are accustomed to favor just one route to a vacation spot over another; one example is, if BGP AS one hundred has two paths to the spot in AS 200, both of these attributes might be established in AS 100 to favor just one route about another. But Imagine if AS one hundred desires to inform the routers in AS two hundred concerning which path it should use to achieve a specified location in AS a hundred?
That’s where by the BGP attribute “Multi-Exit Discriminator”, http://query.nytimes.com/search/sitesearch/?action=click&contentCollection®ion=TopBar&WT.nav=searchWidget&module=SearchSubmit&pgtype=Homepage#/토토사이트 or MED, comes in. The MED worth can be set in AS a hundred to tell AS 200 which route it ought to use to succeed in a supplied community in AS a hundred.
As with lots of BGP characteristics, the MED might be set that has a route-map. What you might want to watch is that there's no “set med” price in route maps. To alter the MED of the path, you'll want to alter the metric of that route. Enable’s say that there are two entry paths for AS 200 to employ to reach destinations in AS a hundred. You would like AS two hundred to make use of the one hundred.1.one.0/24 route in excess of the a hundred.two.2.0/24 path. Very first, detect The 2 paths with two independent ACLs.
R1(config)#obtain-record 22 allow a hundred.one.1.0 0.0.0.255
R1(config)#access-listing 23 allow 100.2.two.0 0.0.0.255
Up coming, create a route-map that assigns a decreased metric to the more-fascinating path.
R1(config)#route-map PREFER_PATH permit 스포츠토토 10
R1(config-route-map)#match ip deal with 22
R1(config-route-map)#set metric a hundred
R1(config-route-map)#route-map PREFER_PATH permit twenty
R1(config-route-map)#match ip handle 23
R1(config-route-map)#set metric 250
Lastly, apply the route-map towards the neighbor or neighbors.
R1(config-route-map)#router bgp 100
R1(config-router)#neighbor 22.two.2.two route-map PREFER_PATH out
The true secret points to bear in mind is while lots of BGP characteristics want a higher value, the MED is basically an exterior metric – along with a reduced metric is most popular, equally as Along with the protocols you’ve currently analyzed to earn your CCNA certification.
