RE: NAT advertizing contest

From: Joel W. Ekis (jekis@xxxxxxxxx)
Date: Wed Dec 22 1999 - 10:07:57 GMT-3


   
See http://www.cisco.com/warp/public/697/6.html

At 07:55 PM 12/21/1999 -0500, Michael Wynston wrote:
>Ok,
> Looks good but...
>
>R2 has DLSW local peer id 32.6.2.2 and a remote peer 32.6.20.5 router R5
>R2 has to pass through R4 a NAT router to get to R5
>R5 is running in promiscuous mode DLSW and a local peer id of 172.16.8.5
>
>Problem
>1) NAT works easily with DLSW if R2 is promiscuous and R5 initiates to R2.
> If R5 is promiscuous and R2 initiates then the NAT router does not work
>dynamically.
> 32.6.5.5 is an address in the NAT pool not a real device.
>Solution:
> Create a static translation for 172.16.8.5:2065, 2067 to 32.6.20.5:2065,
>and 2067.
> Remove the address 32.6.20.5 dynamic translation pool to prevent
>conflicts.
>
>2) 172.16.8.5 tries to send its own TCP connection to 32.6.2.2 in response
>to the request.
> It cannot initiate a new connection out to pair with the one coming in.
>Solution:
> Recreate the NAT pool and allow 172.16.8.5 to translate out to 32.6.20.5
>
>Connection comes up and can be initiated in both directions.
>
>Agree?
>
>I have working configs that do this and I tried it without the static and
>dynamic NAT and only combined does it allow the connection both ways. Any
>suggestions?
>
>Michael Wynston
>Phone(908)413-5813
>Fax (732)549-4271
>email: wynnet@msn.com
>CCSI, CCNP, CCNA, MCSE, MCT
>CCIE on Jan 8,9 in RTP second try
>
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>Stanislav Sinyagin
>Sent: Tuesday, December 21, 1999 3:20 AM
>To: kongck; ccielab@groupstudy.com
>Subject: Re: NAT advertizing contest
>
>
>
>----- Original Message -----
>From: kongck <kongck@rocketmail.com>
>To: Stanislav Sinyagin <SSinyagin@mtu.ru>; <ccielab@groupstudy.com>
>Sent: Tuesday, December 21, 1999 04:03
>Subject: Re: NAT advertizing contest
>
>
>>
>> pay attention to DLSW with NAT,
>> look at http://www.cisco.com/warp/customer/697/6.html
>>
>
>Wow! Thanks, that's a very important issue.
>
>Stan
>



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