To me, this is definitely a question to take to the proctor. If you can articulate that you know the blocks in 3330 and the changes made in 5735, they normally will point you in the right direction. However, if for some reason you don't get good feedback from the proctor and the question asked specifically for blocking RFC3330, then I would block ALL 3330 space, which would include the space in question. Thanks, Jamie Brogdon, CCIE #6541 (SP and R&S) / JNCIE-M #381 Verizon Telecom, IP Networks 703-579-7354 (cell)
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Michael Davis Sent: Sunday, January 31, 2010 5:06 AM To: [email protected] Subject: [OSL | CCIE_Security] RFC 3330 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?
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