Depending what your provider is selling you, If the provider offers you an IP address for the WAN take, it as it makes things easier to troubleshoot.
You usually use IP unnumbered on point to point links where the traffic doesn't need to use the address because it is point to point and can really go anywhere else.Or in here used for dial in connections for ISDN, where the dial in client dials the number of the router and is assigned IP addresses from dial in pool, and the WAN interface is referenced using a unnumbered loopback 0 If you are dialing to your provider, you can use the IP negotiate on the wan interface, and when you dial your provider he assigned you the address dynamically and you can NAT of this, ( This is a clever solution).. its called "easy IP" Kind regards. > -----Original Message----- > From: Lupi, Guy [SMTP:[EMAIL PROTECTED]] > Sent: 16 July 2002 15:38 > To: [EMAIL PROTECTED] > Subject: RE: ip unnumbered [7:48894] > > You can use ip unnumbered with or without PPP, depending on how your > provider is set up. You would just use ip unnumbered to the ethernet port > or to a loopback interface, whichever you prefer, I prefer the loopback. > > *-----Original Message----- > *From: richard dumoulin [mailto:[EMAIL PROTECTED]] > *Sent: Tuesday, July 16, 2002 5:32 AM > *To: [EMAIL PROTECTED] > *Subject: ip unnumbered [7:48894] > * > * > *Hey guys, > *I have to connect a Cisco router to the internet (Worldcom) > *and I was told > *the following "If your router is a CISCO model, then there is no > *need to assign actual IP addresses to the WAN serial > *interfaces since CISCO's un-numbered technology can > *be employed". Does this mean that I can configure IP > *unnumbered ethernet0 or > *loopback0 (with one of them having a routable IP address) and so I must > *configure ppp encap on the serial ?? > * > *I am a bit confused, thx for your help !! > * > * **************************************************************************************** This E-mail is from O2. The E-mail and any files transmitted with it are confidential and may also be privileged and intended solely for the use of the individual or entity to whom they are addressed. Any unauthorised direct or indirect dissemination, distribution or copying of this message and any attachments is strictly prohibited. If you have received the E-mail in error please notify [EMAIL PROTECTED] or telephone ++ 353 1 6095000. ***************************************************************************************** Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=48910&t=48894 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
