OK, you've got me baffled. Comments inline.
JMcL
----- Forwarded by Jenny Mcleod/NSO/CSDA on 13/03/2002 01:37 pm -----
"Mark Odette II"
Sent by: [EMAIL PROTECTED]
12/03/2002 04:10 pm
Please respond to "Mark Odette II"
To: [EMAIL PROTECTED]
cc:
Subject: Loopback Interfaces... [7:37933]
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.")
JMcL: What other subnet are we talking about here? /JMcL
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.
JMcL: Do you mean Ethernet0, or do you mean FastEthernet when you say
Ethernet elsewhere, or what? /JMcL
Here is where my quandry lays. I can't create a Secondary address,
JMcL: To do what? /JMcL
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??
JMcL: I am not sure exactly why you are wanting to create the loopback in
the first place. Is it so that you have two numbered interfaces to match
to your two IP unnumbered serial sub-interfaces (am I correct in thinking
you want two ip unnumbered serials? One for voice and one for data?)
I must admit I've never tried it, but do you *need* two separate numbered
interfaces, or can you just point both unnumbered interfaces at your
single Ethernet/Fast Ethernet interface? /JMcL
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.
JMcL: I don't really understand what you're trying to do or why - maybe a
slightly more coherent explanation is required? Or maybe I just need
another cuppa? /JMcL
Thanks.
Mark
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=38048&t=37933
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