From: Alvarez, Rolando [NCSUS] (RAlvare5@NCSUS.JNJ.COM)
Date: Fri Oct 03 2003 - 13:44:43 GMT-3
Well, in that case, just redistributing the connected subnet on R3 and a NAT
overload on R3 will do.
-----Original Message-----
From: W. Alan Robertson [mailto:warobertson@earthlink.net]
Sent: Friday, October 03, 2003 12:42 PM
To: CCIE GroupStudy
Cc: Alvarez, Rolando [NCSUS]
Subject: Re: Possible NAT?
From the diagram, it doesn't appear that R4 has any additional interfaces or
subnets. The wording of the question doesn't indicate that you need to be
able to ping more than one interface.
It simply says you need to be able to ping R4.
Don't make the problem worse than it really is. Verbage is part of the game
(A HUGE part!).
----- Original Message -----
From: "Joe Martin" <jmartin@capitalpremium.net>
To: "Alvarez, Rolando [NCSUS]" <RAlvare5@NCSUS.JNJ.COM>; "Ozgur Guler
(Garanti Teknoloji)" <OzgurG@garanti.com.tr>; "Cezar Fistik"
<cfistik@moldovacc.md>; "CCIE GroupStudy" <ccielab@groupstudy.com>
Sent: Friday, October 03, 2003 12:23 PM
Subject: RE: Possible NAT?
> RE: Possible NAT?Question didn't ask that but the only way to do that with
> NAT would be to add ststic routes on R3 and redistribute into the rest of
> the network.
> -----Original Message-----
> From: Alvarez, Rolando [NCSUS] [mailto:RAlvare5@NCSUS.JNJ.COM]
> Sent: October 03, 2003 10:20 AM
> To: 'Joe Martin'; Ozgur Guler (Garanti Teknoloji); Cezar Fistik; CCIE
> GroupStudy
> Subject: RE: Possible NAT?
>
>
> How do we get the other routers to know about all the subnets off of R4?
> Say for example, the loopback of R4?
>
> Rolando
>
> -----Original Message-----
> From: Joe Martin [mailto:jmartin@capitalpremium.net]
> Sent: Friday, October 03, 2003 12:13 PM
> To: Ozgur Guler (Garanti Teknoloji); Cezar Fistik; CCIE GroupStudy
> Cc: ccielab@groupstudy.com
> Subject: RE: Possible NAT?
>
>
>
> Ozgur,
>
> The interface on R3 connected to R4 is set as the NAT outside interface.
> All packets going to R4 will have R3 outside interface as the source IP.
> R4
> needs no routing protocol or default route. All the packets coming from
> the
> rest of the network will appear to R4 to be sourced from a network to
> which
> it is directly connected. The requirement said the other routers needed
> to
> ping R4, not that R4 needed to be able to ping any router in the
network.
>
> HTH,
>
> Joe Martin
> CCIE #12035
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Ozgur
> Guler (Garanti Teknoloji)
> Sent: October 03, 2003 10:01 AM
> To: Cezar Fistik
> Cc: ccielab@groupstudy.com
> Subject: RE: Possible NAT?
>
>
>
> how should nat work if the problem is r4,
> not being able to route the packets back?
>
> Ozgur
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Cezar Fistik
> Sent: Friday, October 03, 2003 6:51 PM
> To: ccielab@groupstudy.com
> Subject: Re: Possible NAT?
>
>
>
> Hello Ray,
>
> Friday, October 3, 2003, 5:23:58 PM, you wrote:
>
> BR> R1----OSPF----R2----OSPF----R3----No routing protocol running----R4
>
> BR> Do not run a routing protocol between R3 and R4; however you
> BR> should be able to ping R4 from any other router on the network.
> BR> My thought was to redistribute the connected network between
> BR> R3 and R4 into ospf and then do a static nat between R3 and R4.
>
> NAT should work, you porbably missconfigured it.
>
> Here's another solution:
>
> The problem here is that packets arrive to R4, but R4 doesn't know
> where to send them, since no routing protocol is running and I assume
> static routes are not allowed as well.
>
> You could try to implement a route-map on R4 that will forward any
> locally originated ip packet to R3 and from there to the rest of the
> network.
>
> BTW, someone please tell me if a route map with a default next-hop is
> considered a static route or not? If yes then my solutin sucks.
>
> --
> Best regards,
> Cezar mailto:cfistik@moldovacc.md
>
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