Just when I thought I understood Loopback interfaces, I decided while redesigning a network, that I would use them.... but now I'm questioning my comprehension.
Somebody clear the confusion for me- Please. This is what I'm wanting to do, but not sure if this is proper utilization, much less whether or not it will work: RouterHQ connecting to 3 Remote Routers (branch offices) via FR Pvt Network RouterHQ has 2 Ethernet Interfaces, but the Remotes Do NOT....They only have one. (I think without pause: "No Problem, I can just create a Loopback interface to take care of the other subnet.") The FR Pvt Network is only for Voice Traffic, while all data traffice will be going out another interface that is using IP UnNumbered Interface FastEthernet0. Here is where my quandry lays. I can't create a Secondary address, as I believe the IP UnNumbered command will use the primary address on the Ethernet Interface. So, can I create a Loopback interface, and treate it like a Ethernet interface, as such that I can assign an IP to the Loopback interface, but it have a /24 mask, and other devices on the local network can also be keyed for the same subnet as the Loopback, making it where I can give the command IP UnNumbered Lo0 to a Serial SubInterface?? I thought I could, but then got concerned when I hopped on CCO, and did a lookup on Loopback interfaces, and read a blurb about traffic NOT destined for the LoopBack Interface itself will be routed to 'ye old trashcan' i.e., Null Interface. Somebody please tell me that I can send traffic from one end of the circuit to the other and have it destined for a node OTHER than the Loopback Interface with that node being on the same subnet as the Loopback interface. Thanks. Mark Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37933&t=37933 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
