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Preparing to move the BSCI Test and make your Cisco CCNP? Route summarization is only one of the numerous skills you’ll should master to be able to make your CCNP. Regardless of whether it’s RIP Model 2, OSPF, or EIGRP, the BSCI exam will demand from customers which you could flawlessly configure route summarization.
Route summarization isn’t just essential for your BSCI Test. It’s a important ability to own in the actual globe at the same time. Effectively summarizing routes may lead to scaled-down routing tables that are still in the position to route packets https://socialhattori.com/ precisely – what I choose to contact “concise and comprehensive” routing tables.
The first ability you’ve obtained to have so that you can perform with route summarization is binary math far more particularly, you must manage to get several routes and come up with equally a summary route and mask to promote to downstream routers. Supplied the networks 100.16.0.0 /16, a hundred.seventeen.0.0 /16, a hundred.18.0.0 /sixteen, and a hundred.19.0.0 /16, could you quickly think of the two the summary handle and mask? All you must do is split the 4 network numbers down into binary strings. We all know the last two octets will all change for the binary string 00000000, so in this post we’ll only illustrate how to convert the initial and next octet from decimal to binary.
a hundred 16 = 01100100 00010000
one hundred 17 = 01100100 00010001
100 eighteen = 01100100 00010010
one hundred 19 = 01100100 00010011
To come up with the summary route, just get the job done from left to ideal and draw a line the place the 4 networks no longer Possess a bit in frequent. For these 4 networks, that time comes concerning the 14th and fifteenth bits. This leaves us using this type of string: 01100100 000100xx. All you should do is convert that string again to decimal, which gives us a hundred for the primary octet and sixteen for the next. (The 2 x values are bits on the right side of the road, which aren’t used in calculating the summary route.) Considering the fact that we know that zero is the value for the last two octets, the ensuing summary community quantity is one hundred.16.0.0.
But we’re not accomplished! We now must come up with the summary mask to advertise along with the summary route. To reach on the summary route, produce out a mask in binary that has a “1” for every little bit into the remaining of the road we drew Formerly, along with a “0” for every little bit to the correct. That provides us the next string:
11111111 11111100 00000000 00000000
Converting that to dotted decimal, we arrive at the summary mask 255.252.0.0. The right summary network and mask to market are one hundred.sixteen.0.0 252.0.0.0.
For the BSCI Test, emphasis is put on understanding the way to promote these summary routes in RIPv2, EIGRP, and OSPF. For RIP v2 and EIGRP, route summarization comes about within the interface stage – it’s not configured underneath the protocol. On the interface That ought to promote the summary route, use the command “ip summary-tackle”. Allow me to share samples of how the above summary route would be configured on ethernet0 in both equally RIPv2 and EIGRP.
R1(config-if)#ip summary-deal with rip one hundred.16.0.0 255.252.0.0
R1(config-if)#ip summary-address eigrp a hundred 100.sixteen.0.0 255.252.0.0
The most crucial difference between The 2 is that the EIGRP command will have to specify the AS quantity – that’s what the “a hundred” is in the midst of the EIGRP command. Because RIPv2 won't use AS figures, there’s no further worth necessary while in the configuration.
For OSPF, the instructions differ. In case you’re configuring inter-region route summarization, use the “place assortment” command. The variety subsequent “location” is the region containing the routes currently being summarized, not the area getting the summary.
R1(config)#router ospf 1
R1(config-router)#location 1 vary a hundred.sixteen.0.0 255.252.0.0
In case you are summarizing routes that are being redistributed into OSPF, make use of the summary-address command under the OSPF routing system within the ASBR.
R1(config-router)#summary-deal with one hundred.sixteen.0.0 255.252.0.0
I communicate from experience After i inform you that exercise tends to make great to the BSCI exam, In particular with binary and summarization questions. The beauty of these queries is there are no grey places with these questions – you either learn how to do it otherwise you don’t. And with exercise and a watch for depth, you are able to master these skills, pass the Test, and become a CCNP. Right here’s on your results on these challenging Cisco certification tests!