Who needs to worry about subnetting with the one day exam? (disclaimer: this is only a joke, no flames please)
-----Original Message----- From: Howard C. Berkowitz [mailto:[EMAIL PROTECTED]] Sent: Wednesday, October 31, 2001 12:19 PM To: [EMAIL PROTECTED] Subject: Re: IP addressing Subnetting [7:24712] >Good...... but you can't have a subnet with 31 bits.... that would >leave 2 "hosts" and the network address and the broadcast would use >them up, so you end up with 0 hosts per subnet. For point-to-point >serial links, you'd usually use a /30 (255.255.255.252) which gives you >4 addresses per subnet (1 network, 1 broadcast, and two hosts) > >Mike W. Mike, your answer has been correct for a long time. However, let me cite a recent RFC with a lead author from Cisco: 3021 Using 31-Bit Prefixes on IPv4 Point-to-Point Links. A. Retana, R. White, V. Fuller, D. McPherson. December 2000. I believe some recent IOS versions, primarily intended for carriers, will support /31 on point-to-point media. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=24849&t=24712 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
