On Wed, Mar 3, 2010 at 00:56, Johan <[email protected]> wrote: > Hi > I'm doing a lab that ask to summarize three networks with the most efficient > mask as possible. > I have : > 6.6.160.0/30 > 6.6.160.4/30 > 6.6.160.8/30 > Ok so a /28 would be too long because it would include a network I don't > have 6.6.160.12/30. > The good solution is to only aggregate 6.6.160.0/29 and leave alone > 6.6.160.8/30. > Problem is, the proposed solution said the longest mask is a /28... I'm > pretty sure at 99% I can't advertise that mask, I would not in a production > network. > But a lab is a different beast. > Did I miss something ? maybe I'm just tired and I don't see an obvious
Unless you are explicitly asked not to include any other networks, /28 is the correct answer. If you are, then your approach is the correct. Another hint: if the question says "mask" and not "masks", or it talks about "summary" and not "summaries", you need one and there is only one solution in that case :-) What does the DSG say as the answer? -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert Mailto: [email protected] Telephone: +1.810.326.1444 Fax: +1.810.454.0130 R&S Video on Demand Demo: http://bit.ly/aFyrU4 _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
