From: Joe Martin (jmartin@capitalpremium.net)
Date: Fri Oct 03 2003 - 13:23:55 GMT-3
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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