Hi, Take a look at dialer watches. Demand circuits is another way of using a circuit on a demand basis, and bring it up if needed (don't need to be a backup, can be a standard link). If you want to use it as a backup, u just need to adjust the cost of the link so that it's not used if there is another circuit available. Don't forget to indicate it (ip ospf demand-circuit) only on one side of the link. Olivier -----Message d'origine----- De : Cisco Lover [mailto:[EMAIL PROTECTED]] Envoyi : 18 septembre, 2001 05:23 @ : [EMAIL PROTECTED] Cc : [EMAIL PROTECTED] Objet : Hi guys, Any one can explain what the other ways for DDR if we are not allowed to use backip interface command??? IP Ospf demand circuit???Any one can explain please how does it works?? Thanks. _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp **Please read:http://www.groupstudy.com/list/posting.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=20254&t=20254 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]