RE: Possible NAT?

From: Danny.Andaluz@triaton-na.com
Date: Fri Oct 03 2003 - 13:08:14 GMT-3


If you NAT on R3, when these packets hit R4 they source form the serial of
R3. It knows this as a directly connected network so it sends it back to
R3. R3 knows this is NAT'ed traffic so it sends it back to the "real"
source. This works if the requirement doesn't need r4 to initiate any
traffic. Otherwise, I'm not sure.

Danny

-----Original Message-----
From: Ozgur Guler (Garanti Teknoloji) [mailto:OzgurG@garanti.com.tr]
Sent: Friday, October 03, 2003 12:01 PM
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 should
BR> be able to ping R4 from any other router on the network. My thought
BR> was to redistribute the connected network between R3 and R4 into
BR> 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

***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***



This archive was generated by hypermail 2.1.4 : Mon Nov 24 2003 - 07:52:56 GMT-3