We summarize IPv6 exactly the same way we do IPv4! Break it into binary and draw a line from there. Your line is 6 bits in from the right-most side (where the /64 was). So 64-6 = a /58. HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al. CCSI/JNCI-M/JNCI-ER VP - Technical Training - IPexpert, Inc. IPexpert Sr. Technical Instructor A Cisco Learning Partner - We Accept Learning Credits! [EMAIL PROTECTED] Telephone: +1.810.326.1444 Fax: +1.810.454.0130 http://www.ipexpert.com _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of khalid aljorf Sent: Saturday, February 02, 2008 12:25 PM To: [email protected] Subject: [OSL | CCIE_RS] IPV6 summary Hi all, I have the following addresses: 2020:100:100:2200::/64 2020:100:100:2220::/64 2200= 0010 0010 0000 0000 2220= 0010 0010 0010 0000 what is the bit weight for the above bits and how we got the summary below? 2020:100:100:2000::/58 regards Khalid
