Comments on: Network summarization — Supernetting and wildcard masks http://happyrouter.com/network-summarization-supernetting-and-wildcard-masks Your Source for Cisco Networking How-To Articles & Videos Wed, 08 Feb 2012 23:36:56 +0000 hourly 1 http://wordpress.org/?v=3.0.4 By: sourav http://happyrouter.com/network-summarization-supernetting-and-wildcard-masks/comment-page-1#comment-876 sourav Thu, 17 Nov 2011 08:37:07 +0000 http://67.225.190.39/network-summarization-supernetting-and-wildcard-masks#comment-876 Hello FleszPolska , please check out this with your rule, it does not work, i think its better and sound way to do it with binaries. check out this example 192.168.98.0 11000000 10101000 01100010 00000000 192.168.99.0 11000000 10101000 01100011 00000000 192.168.100.0 11000000 10101000 01100100 00000000 192.168.101.0 11000000 10101000 01100101 00000000 192.168.102.0 11000000 10101000 01100110 00000000 192.168.105.0 11000000 10101000 01101001 00000000 answer comes out to be subnet mask is 255.255.240.0. but your method show 255.255.248.0 some thing is wrong. check out.. Hello FleszPolska ,

please check out this with your rule, it does not work,
i think its better and sound way to do it with binaries.
check out this example

192.168.98.0 11000000 10101000 01100010 00000000
192.168.99.0 11000000 10101000 01100011 00000000
192.168.100.0 11000000 10101000 01100100 00000000
192.168.101.0 11000000 10101000 01100101 00000000
192.168.102.0 11000000 10101000 01100110 00000000
192.168.105.0 11000000 10101000 01101001 00000000

answer comes out to be
subnet mask is 255.255.240.0.

but your method show 255.255.248.0

some thing is wrong.
check out..

]]> By: FleszPolska http://happyrouter.com/network-summarization-supernetting-and-wildcard-masks/comment-page-1#comment-840 FleszPolska Tue, 19 Jul 2011 12:58:32 +0000 http://67.225.190.39/network-summarization-supernetting-and-wildcard-masks#comment-840 I have found easy way to calculate network summarization Lets take as an example the range of IPs 172.16.128.0-172.16.159.255 We see that the network mask will have to affect 3rd octet. The easy way it to subtract 128 from 159. Lets see 159-128=31 Now subtract 31 from 255 255-31=224 There we go, this is our 3rd octet in the subnet mask 172.16.128.0 255.255.224.0 Another example Summarize networks 100.16.0.0 100.17.0.0 100.18.0.0 100.19.0.0 19-16=3 255-3=252 Our subnet mask is 255.252.0.0 for network 100.16.0.0 I have found easy way to calculate network summarization
Lets take as an example the range of IPs

172.16.128.0-172.16.159.255

We see that the network mask will have to affect 3rd octet.
The easy way it to subtract 128 from 159. Lets see

159-128=31

Now subtract 31 from 255

255-31=224

There we go, this is our 3rd octet in the subnet mask

172.16.128.0
255.255.224.0

Another example

Summarize networks 100.16.0.0 100.17.0.0 100.18.0.0 100.19.0.0
19-16=3
255-3=252
Our subnet mask is 255.252.0.0 for network 100.16.0.0

]]> By: php3397 http://happyrouter.com/network-summarization-supernetting-and-wildcard-masks/comment-page-1#comment-744 php3397 Tue, 12 Oct 2010 10:41:03 +0000 http://67.225.190.39/network-summarization-supernetting-and-wildcard-masks#comment-744 well since i could really benefit from this article its my duty to compliment the author . thank you sir , you really helped me with supernets . well since i could really benefit from this article its my duty to compliment the author .

thank you sir , you really helped me with supernets .

]]> By: Sheejanarayanan http://happyrouter.com/network-summarization-supernetting-and-wildcard-masks/comment-page-1#comment-719 Sheejanarayanan Thu, 29 Jul 2010 10:58:30 +0000 http://67.225.190.39/network-summarization-supernetting-and-wildcard-masks#comment-719 Sir.... Thank you very much.I reffered so many sites to find an easy method for route summarization.Now from you it is clear. Sir….

Thank you very much.I reffered so many sites to find an easy method for route summarization.Now from you it is clear.

]]> By: Vikas Chauhan http://happyrouter.com/network-summarization-supernetting-and-wildcard-masks/comment-page-1#comment-707 Vikas Chauhan Fri, 09 Jul 2010 08:20:54 +0000 http://67.225.190.39/network-summarization-supernetting-and-wildcard-masks#comment-707 Dear Sir, Thanks a lot for your useful artical. Dear Sir,

Thanks a lot for your useful artical.

]]> By: KUNDAN SHINDE http://happyrouter.com/network-summarization-supernetting-and-wildcard-masks/comment-page-1#comment-346 KUNDAN SHINDE Sun, 03 May 2009 06:49:47 +0000 http://67.225.190.39/network-summarization-supernetting-and-wildcard-masks#comment-346 Respected David Davis Sir. Ur training stuff is very good. I usaly visit petri.com and happyrouter.com I am from India mumbai. Where we can clearly understand things through ur screen shots based articals and video . Thank u very much sir it has been helped to us where we are in IT Filed. how I can download the this video ,help me sir Regards, Kundan Shinde Respected
David Davis Sir. Ur training stuff is very good. I usaly visit petri.com and happyrouter.com I am from India mumbai. Where we can clearly
understand things through ur screen shots based articals and video . Thank u very much
sir it has been helped to us where we are in IT Filed.
how I can download the this video ,help me sir
Regards,

Kundan Shinde

]]> By: Suraj kumar http://happyrouter.com/network-summarization-supernetting-and-wildcard-masks/comment-page-1#comment-313 Suraj kumar Thu, 05 Mar 2009 14:44:52 +0000 http://67.225.190.39/network-summarization-supernetting-and-wildcard-masks#comment-313 Although i refered different book but i could not figure out this topic The summarization but thanks to Sir David Davis I got clear my topic through this web site Thank you so much. Although i refered different book but i could not figure out this topic The summarization but thanks to Sir David Davis
I got clear my topic through this web site
Thank you so much.

]]> By: Jitendra http://happyrouter.com/network-summarization-supernetting-and-wildcard-masks/comment-page-1#comment-26 Jitendra Sat, 13 Dec 2008 11:01:52 +0000 http://67.225.190.39/network-summarization-supernetting-and-wildcard-masks#comment-26 Respected David Davis Sir. Ur training stuff is very good. I usaly visit petri.com and windowsnetworking.com I am from India bangalore. Where we can clearly understand things through ur screen shots based articals. Thank u very much sir it has been helped to us where we are in IT Filed. B E S T O F L U C K T O U SIR WISH U HAPPY X MAS Thank You Jitendra Respected
David Davis Sir. Ur training stuff is very good. I usaly visit petri.com and windowsnetworking.com I am from India bangalore. Where we can clearly
understand things through ur screen shots based articals. Thank u very much
sir it has been helped to us where we are in IT Filed.

B E S T O F L U C K T O U SIR
WISH U HAPPY X MAS

Thank You
Jitendra

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