1) It's an interface that never goes down. 2) It has a neat use in a situation where you have a VPN router-to-router and are using NAT. You may have a server that uses a static NAT to allow access from outside. To allow traffic from the server to traverse the VPN tunnel - use a route-map to bounce the VPN traffic off an address in the subnet of the loopback interface (which has no NAT statements). 3) In labs a small router can source many routes.
> -----Original Message----- > From: DeVoe, Charles (PKI) [mailto:[EMAIL PROTECTED] > Sent: Thursday, July 31, 2003 2:16 PM > To: [EMAIL PROTECTED] > Subject: Loopback Interface [7:73305] > > > I know the loopback interface is useful for assigning the > router ID. Is > there any other purpose? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73316&t=73305 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
