Quick route summarization

Example of route summarization calculation.

[subhashreenath]

This woman just made a 3 min video and covered my 3hr lecture’s syllabus!!( Explained it so well)

[Dallyce]

I appreciate being able to find a short, clear video on a topic like this instead of having to watch multiple 20 minute to 2 hour videos on IPv4 to find it.

[mariapanagiotakokolaki]

Thank you Kim for the fast explanation... Finally a woman in networking .. keep up the good job!

[SouthernSam]

Straight to the point, beautiful! Thank you.

[gordlarusic]

The process looks correct. The issue is that they all are on the same network. These are IP addresses on the same 10.0.0.0/24 network.IF the example was three networks 10.0.4.0/24, 10.0.5.0/24, and 10.0.6.0/24 then then the third octet would be summarized as you show in the fourth. Route summarization should have a smaller netmask than that of the original contiguous networks being summarized.So taking your example and because the third octet is where the change happens the first two octets don't (10.0.6.0/24)In the third octet you will see, as you show in the video, starting from left to right, all bits are same up to the first 1 in the third octet.The bits that are the same are 8+8+6 =22.The new summary route would be 10.0.4.0/22

[BuayaGuy]

I literally just started trying to figure out Route summarization on a website, and I almost had it, but I didn't understand how they got (in your particular example), the "4"in the last octet.

The way you explained it, turning everything past the "bits that are in common" to zeros, and then figuring out that binary value in decimal just made it click, *thank you* so much 😊👍🏻

[reviewportal]

Very precise and to the point, liked your approach.
Also got my confusion about route summarization cleared. Thanks ciscoKim.

[GerhardvdLinde]

You make every subnetting concept easy, thank you.

[brad]

After reading about route summarization in the ccna3 scaling networks course, I felt very confused. After watching your 3min video it all makes so much more sense. Thank you, you rock!

[gedeonluapanya]

Awesome! It's the first time for me to watch a network video done by a woman and you did it so well. Thank you

[valentineimaralu]

Nice explanation, and correct too, but you are confusing host addresses for routes(which are meant to be network addresses). That's why the prefix-length increase from /24 to /30, whereas it is supposed to decrease. I think the proper addresses for the routes should be like - 10.0.4.0/24, 10.0.5.0/24, 10.0.6.0/24, and the summary route will be 10.0.4.0/22.

[MrYass]

Quick and directly to the point, Thank you!

[ciphermatrix]

Fast and clear explanation, just what was needed. Thx.

[coolplayer]

So easy compared to every other video. You did a good job explaining. Thanks, you da real MVP.

[caripepo]

Kudos to the simple method, thanks to you I know my summary route !!

[vamseekrishnakapuluru]

Hi, that was a quick explanation after a long time, I was checking the route summarization and finally got here.

[hikgerguy]

Clearest explanation I've ever seen. Good job!

[kreep]

That was quick and to the point. Great work.

[Perezabl]

Awesome explanation! clear and with no beating around the bush. Thank you so much!

[P-]

Use Boson Subnet Calculator, type in the host IP address and adjust the mask bits according to CIDR. It will provide the host range and one can adjust the mask bits so the host range can fit the network addresses