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Re: NAT on PE router

  • From: "sylvia" <sylvia_xys@hotmail.com>
  • Date: Tue, 17 Dec 2002 13:24:56 -0500
  • Cc: <mpls-ops@mplsrc.com>
  • Resent-Date: Tue, 17 Dec 2002 14:47:39 -0500
  • To: "Ridolfi Stefano" <s_ridolfi@yahoo.it>
  • X-OriginalArrivalTime: 17 Dec 2002 18:25:37.0306 (UTC) FILETIME=[B21697A0:01C2A5F9]
  • X-Originating-IP: [216.221.81.97]

I think, your solution will work well when there are servers in A and clients in B and C, because the NAT will remember the clients when they send the requests.
But how will it be, for example, when a simple PC in A wants to talk with another PC in B?
I am not familiar with NAT. If I made a mistake, your correction is welcome. Thank you.
 
----- Original Message -----
Sent: Tuesday, December 17, 2002 1:08 PM
Subject: Re: [MPLS-OPS]: NAT on PE router

In VRF A there aren't  original IP address of B (or C) but the IP address cofigured  for NAT in B (or C).

VRF in B (or C) advertise NOT original IP but only  NAT pool IP Address !

 sylvia <sylvia_xys@hotmail.com> wrote:

Hi Ridolfi,
 
Yes, it is possible that the traffics are only between A-B and A-C. But, if B and C have the same IP space, when a terminal in A want to send a packet to 10.0.0.2, how can it tells it's the 10.0.0.2 in B or 10.0.0.2 in C? It has no idea of VPN.
 
Sylvia
 
----- Original Message -----
Sent: Tuesday, December 17, 2002 12:08 PM
Subject: Re: [MPLS-OPS]: NAT on PE router

Hi Sylvia,

for extranet service we have 3 VPNs; VPN A is the central office,  B and C are 2 branch , and 2 VPNs  whit same IP space; it's possible only the traffic A-B, and A-C; In the VRFof VPN A  is not possible to have   the same network for VPNs B and C.

The idea is to use NAT in B or C and to advertise the NAT Pool from B or C to A.

By

  

 sylvia <sylvia_xys@hotmail.com> wrote:

Hi,
 
Sorry, what do you mean by "natting IP between 2 VPN"?
 
The private IP addresses are seen only inside VPNs. One VPN has no any idea about the IP address in the other VPN.
For the PE router, it only knows VPN-IPV4 address family.
 
----- Original Message -----
Sent: Tuesday, December 17, 2002 9:21 AM
Subject: [MPLS-OPS]: NAT on PE router

Hi all,

Is it possible to use NAT feature for natting IP between 2 VPN ?

Any idea about the restriction on cisco site:"Inside VPN to VPN with NAT is not supported" ?

 

rgds

 


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