Hello, For real-life purposes, you should probably be aware that RFC 3330 has ben obsoleted by the RFC 5735. As for the lab purposes, I suppose that so recent update of the RFC would have not found it's way into the questions, yet.
Whether you need to know these ranges or not, someone else will probably answer better than me :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert Mailto: [email protected] Telephone: +1.810.326.1444 Fax: +1.810.454.0130 Community: http://www.ipexpert.com/communities On Sun, Jan 31, 2010 at 10:05, Michael Davis <[email protected]> wrote: > Hi everyone – I have been reading rfc 3330 and have a question. There are a > few subnets: > > 39.0.0.0/8 > > 128.0.0.0/16 > > 191.255.0.0/16 > > 192.0.0.0/24 > > The RFC states the following regarding these subnets: > > “the basis for the reservation no longer applies and addresses in this block > are subject to future allocation to a Regional Internet Registry for > assignment in the normal manner.” > > Does this mean that we should not block these subnets??? Both Lab 7 and 8 > solutions in the DSG do block these ranges. > > My thinking for the real world (and possibly the exam) is that we only block > the following: > > 0.0.0.0/8, 10.0.0.0/8, 14.0.0.0/8, 24.0.0.0/8, 127.0.0.0/8, 169.254.0.0/16, > 172.16.0.0/12, 192.0.2.0/24, 192.88.99.0/24, 192.168.0.0/16, 192.18.0.0/15, > 223.255.255.0/24, 224.0.0.0/4, 240.0.0.0/4 > > Do we need to memorize these ranges for the exam? > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
