RE: LAB 3 IOS and IP Features - Practice Labs

From: john matijevic (matijevi@bellsouth.net)
Date: Wed Oct 27 2004 - 15:13:11 GMT-3


Hello Tim and Gladston,
This is the lab in the new cisco press lab book.

Gladston, please excuse if I don't have your name right. What exactly
don't you understand about the nat being used here. Can you be more
specific as to what part you don't understand? From what you described
below seems to me that you have this understanding, have you actually
try using an extended ping with the source address to 10.60.60.1 and
destination to 10.80.80.12 on R6, and use debug ip nat on R8, that
should help clarify.

Sincerely,

John Matijevic, CCIE #13254, MCSE, CNE, CCEA
CEO
IgorTek Inc.
151 Crandon Blvd. #402
Key Biscayne, FL 33149
Hablo Espanol
305-321-6232
http://home.bellsouth.net/p/PWP-CCIE
 

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ccie2be
Sent: Wednesday, October 27, 2004 1:51 PM
To: gladston@br.ibm.com; ccielab@groupstudy.com
Subject: Re: LAB 3 IOS and IP Features - Practice Labs

Who's lab 3 are you referring to?

IE? IPExpert? NMC? Cisco Press? etc

----- Original Message -----
From: <gladston@br.ibm.com>
To: <ccielab@groupstudy.com>
Sent: Wednesday, October 27, 2004 12:11 PM
Subject: LAB 3 IOS and IP Features - Practice Labs

> What is that NAT mess on Lab3? (eheh, sorry, could avoid it).
>
> Have you tried the NAT configuration on Lab3?
>
> int fa 0/0
> ip ad 10.80.80.3 255.255.255.0
> ip nat outside
> !
> ip nat pool test 10.8.82 10.8.8.2 netmask 255.255.255.240
> ip nat inside source static 10.90.90.90.1 10.80.80.12
> ip nat inside source static 10.60.60.1 10.8.8.2
> ip nat outside source list 199 pool list
> access-list 199 permit ip host 10.60.60.60.1 host 10.80.80.12
>
> Having difficult time trying to follow the logic used. Any
clarification?
>
> As I see it:
>
> ip nat inside source static 10.90.90.90.1 10.80.80.12
> >>means that packet coming on the outside interface (fa0/0)
destinated to
10.80.80.12 will have the destination address translated to 10.90.90.1
>
> ip nat inside source static 10.60.60.1 10.8.8.2
> >>means that packet coming on the outside interface (fa0/0) with
destination 10.8.8.2 will have the destination address translated to
10.60.60.1
>
> ip nat pool test 10.8.8.2 10.8.8.2 net 255.255.255.0
> ip nat outside source list 199 pool list
> access-list 199 permit ip host 10.60.60.60.1 host 10.80.80.12
> >>means that packet coming on the outside interface (fa0/0) that are
sourced by 10.60.60.60.1 and destinated to 10.80.80.12 will have the
source
address translated from 10.60.60.60.1 to 10.8.8.2
>
> Seems to work but it is kind of confusing.
>
>



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