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RE: Possible NAT? posted 10/03/2003
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I would assume nothing is enabled in R4 (CDP, etc) and it is behaving like a host without a gateway. How would you solve this? I believe NAT overload is the answer.
 
Phil

Kenneth Wygand <KWygand@xxxxxxxxxxxxxxxx> wrote:
Ray,

I forgot all about it - it's "On Demand Routing". You enable ODR on R3
and redistribute ODR into OSPF. A default route is sent to R4 through
CDP which is not considered a routing protocol in the context of your
question. No configuration is required on R4 other than leaving CDP
enabled (which is enabled by default).

Try it out, it's pretty neat. Here's a link to get your started:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/
fipr_c/ipcprt2/1cfodr.htm

Kenneth E. Wygand 
Systems Engineer, Project Services
CISSP #37102, CCNP, CCDP, MCP 2000, CNA 5.1, Network+, A+
Custom Computer Specialists, Inc. 
"It's not just about ending up where you want to be, it's about making
the most of the trip there."
-Anonymous

-----Original Message-----
From: Kenneth Wygand 
Sent: Friday, October 03, 2003 10:52 AM
To: Barker, Ray; ccielab@xxxxxxxxxxxxxx
Subject: RE: Possible NAT?

Ray,

Does the question specifically forbid you from using static routes?
It's easy to overlook the obvious and make something really complex when
in "CCIE Crunch Mode".

Kenneth E. Wygand 
Systems Engineer, Project Services
CISSP #37102, CCNP, CCDP, MCP 2000, CNA 5.1, Network+, A+
Custom Computer Specialists, Inc. 
"It's not just about ending up where you want to be, it's about making
the most of the trip there."
-Anonymous

-----Original Message-----
From: Barker, Ray [mailto:Ray.Barker@xxxxxxxxxxxxx] 
Sent: Friday, October 03, 2003 10:24 AM
To: ccielab@xxxxxxxxxxxxxx
Subject: Possible NAT?

R1----OSPF----R2----OSPF----R3----No routing protocol running----R4

Do not run a routing protocol between R3 and R4; however you should be
able to ping R4 from any other router on the network. 
My thought was to redistribute the connected network between R3 and R4
into ospf and then do a static nat between R3 and R4.

That did not work and I'm having trouble coming up with another
solution. Anyone have any ideas?

Thanks,
Ray



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