Reference http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft /122t/122t2/ft31addr.htm
Point-to-Point Link 31-Bit Prefix Configuration Example The following example shows how to configure the 31-bit prefix functionality on a point-to-point link. ! interface Serial5/1 ip address 145.10.70.2 255.255.255.254 no ip directed-broadcast ! -----Original Message----- From: [EMAIL PROTECTED] [mailto:nobody@;groupstudy.com] On Behalf Of bbfaye Sent: Saturday, October 12, 2002 8:23 AM To: [EMAIL PROTECTED] Subject: Re: can I use a /31 subnet to the link between 2 routers eth [7:55458] That's what I confusing. if I use /31s to the link address, it seems there's no address for network address and broadcast address in this subnet. How could it work? at 12 Oct 2002 15:10:36 -0000 , [EMAIL PROTECTED] ("bergenpeak") wrote: -- >/31s are supported on FE and GE link types (as well as POS, etc.) >However, >cisco backed out support in some early versions of the 12.1 code train >(ie >it worked in some versions of 12.0, didn't work in some 12.1, and now >appears >to work again). > >RFC 3021 provides details. > > > >bbfaye wrote: >> >> I used thought it shoul be /30 mask subnet... >> but recently I saw some guy said: use /31 subnet to save the >> address.... I really confusing me... Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=55461&t=55461 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
