From: Andris Zarins (a.zarins@lattelecom.lv)
Date: Mon Sep 24 2007 - 11:00:56 ART
Shiran, I think you are talking bullshit, my friend, no offence. There
are a lot of 'just my 2 cent' advices, and here goes another one.
Either loopbacks, or physical/logical addreses will work just fine.
Final conclusion depends of either you have just one link/route traffic
can flow, or there are several (like backup links and so on) and if
there are some additional issues you have to deal with. One thing (proly
- the most important) you must keep in mind - both tunnel endpoint
addresses (tunnel destination and source) address must be reachable. So
if you arent using directly connected interface addresses, you will need
some static/dynamic routing to make far end address reachable, so I'd
advice to avoid it by using directly connected interface addresses on
both ends.
If you have some backup links, and you want the tunnel to be UP at all
times - interface addresses wont work, as interface might be DOWN at
some moment, in that case - use loopbacks and make sure they are
reachable via primary and backup link at all times. If you dont have to
save address space, or dont have some technical reasons why you have to
use 'unnumbered' on Tunnel interface, dont use 'unnumbered', as it will
ease troubleshooting in case you need it.
Hope it helps,
Andris
#17473
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
shiran guez
Sent: Monday, September 24, 2007 4:08 PM
To: Alexander Belov
Cc: Tandou Mohamed; ccielab@groupstudy.com
Subject: Re: Tunnel Config
guys although every opinion count here I think that to give this "2 cent
advice" is the worse we can do, if we want to consider our self Experts
then
we need to act like it and understand that there are very few 2 cent
advice
and mostly are focused on tricks like making the status prompt on the
IOS
disappear.
but as far as technology there are no "2 cent advice" it is either you
understand or you do not, and if you do not understand then your "2 cent
advice" will work may be 90% if you lucky but in case you get a question
that need your full understand it will not work and you will not know
why.
I hope that more will agree with me on that view
On 9/24/07, Alexander Belov <abelov@technoserv.ru> wrote:
>
> Hi mate!
>
> I'd say - Loopback IPs for tunnel source/dest and /30 network on
tunnel
> (ip
> address 192.168.x.1/30 vs ip address 192.168.x.2/30)...
>
> My 2 cents
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Tandou Mohamed
> Sent: Monday, September 24, 2007 4:12 PM
> To: ccielab@groupstudy.com
> Subject: Tunnel Config
>
> GS,
> When configuring a tunnel interface, what is the best option to use
for
> tunnel source and tunnel destination if no direction is given? i
always
> use
> the loopback interface for tunnel source and destination and also for
> tunnel
> ip address using ip unnumbered. Some of the vendor workbooks sometimes
use
> loopback or physical ip addresses. Can someone explain if i am doing
> something wrong ?
>
> Thanks,
>
> TM
>
>
> ---------------------------------
> Moody friends. Drama queens. Your life? Nope! - their life, your
story.
> Play Sims Stories at Yahoo! Games.
>
>
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