From: Josef A (josefnet@gmail.com)
Date: Sun Feb 11 2007 - 14:55:18 ART
I think this an application of NAT redundancy. You can have a scenario with
two or more NAT outside interfaces, you can configure NAT to translate
source addresses using the currently active source interface with the
overload option. You will configure two ip nat inside statements each with
its own route-map matching the source network and outside interface, with
the overload option.
If you show ip nat translations, you will notice that NAT is overloading on
the currently active interface. If you shut down the currently active
interface, and clear all nat translations, you will notice the failover to
the other interface.
Hope this helps
Josef
On 2/11/07, Shamin <ccie.xpert@gmail.com> wrote:
>
> Hi all,
>
> I am also stuck with the same issue. I do not understand the use of two
> match statements in the route map,One for the range of IPs to match and
> the
> other for the the outgoing interface.
> And the route map is put in the ip nat statement after inside source.
>
> Please can any one explain this, I have read through all the FAQ's in the
> Cisco DOC website ,still cant get this out,.
>
> regards
> Shamin
>
>
> On 2/9/07, nhatphuc <nhatphuc@gmail.com> wrote:
> >
> > Hi Joe,
> > This is my configuration:
> > int f0/0
> > ip address 10.0.0.1 255.255.255.0
> > ip nat inside
> >
> > int s0/0
> > ip address 192.168.1.1 255.255.255.0
> > ip nat outside
> >
> > int s0/1
> > ip address 192.168.2.1 255.255.255.0
> > ip nat outside
> >
> > access-list 1 permit 10.0.0.0 0.0.0.255
> > route-map INT0
> > match ip address 1
> > match int s0/0 (versus: set int s0/0)
> >
> > route-map INT1
> > match ip address 1
> > match int s0/1 (versus: set int s0/1)
> >
> > ip nat inside source route-map INT0 interface s0/0 overload
> > ip nat inside source route-map INT1 interface s0/1 overload
> >
> > Thanks
> >
> > Phuc
> >
> > On 2/9/07, Joe Chang <changjoe@earthlink.net> wrote:
> > >
> > > Hi Phuc,
> > >
> > > Can you show me the rest of the configuration ?
> > >
> > > Thanks,
> > > Joe
> > >
> > > CCIE 16805
> > >
> > > ----- Original Message -----
> > > From: "nhatphuc" <nhatphuc@gmail.com >
> > > To: "Cisco certification" <ccielab@groupstudy.com>
> > > Sent: Thursday, February 08, 2007 7:34 AM
> > > Subject: NAT using route-map
> > >
> > >
> > > > HI Group,
> > > >
> > > > Can you give me an example to make clear the purpose of the 2
> > following
> > > > route-maps?
> > > >
> > > > route-map TEST1
> > > > match network ....
> > > > match interface ....
> > > >
> > > > route-map TEST2
> > > > match network ....
> > > > set interface ....
> > > >
> > > > This route-map used in NAT to set the outgoing interface.
> > > >
> > > > Thanks
> > > >
> > > > Phuc
> > > >
> > > >
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