From: David Timmons (masterdt@yahoo.com)
Date: Fri Jun 30 2006 - 17:56:55 ART
Hi,
The route will get advertised to your bgp neighbor;
however, I have never tried to nat to address that is
not defined on one of my interfaces. so, I am not
really sure how the NAT process is going to work. I
have forgotten my order of operations when it comes to
NAT. Would traffic to the outside global get shredded
before it was resolved to the inside local address? I
will have to test that.
dt
--- Jens Petter <jenseike@start.no> wrote:
> Hi,
>
> I just used fictive ip addresses here... The outside
> interface is a /30 net
> (link net) and the nat address is not in that /30
> net, but on the outside of
> it..
>
> Lets just say that the outside interface has ip
> address 172.16.1.89
> 255.255.255.252
>
> And the nat overload address is 172.16.1.17
>
> Comment?
>
> Jens
>
> -----Original Message-----
> From: David Timmons [mailto:masterdt@yahoo.com]
> Sent: 30. juni 2006 22:22
> To: Jens Petter; ccielab@groupstudy.com
> Subject: Re: advertising NAT pool in to BGP
>
> Hi,
>
> This looks like it will inject the static route into
> BGp and it should be seen by the bgp peer; however,
> since it is the same subnet as your outside
> interface,
> why would you try to do this instead of advertising
> your outside interface into bgp?
>
> dt
>
> --- Jens Petter <jenseike@start.no> wrote:
>
> > I am trying to figure out how to advertise a NAT
> > configured pool in to bgp..
> >
> > Will this do the job ? :
> >
> >
> >
> > interface fastethernet 1
> > ip address 172.16.1.x 255.255.255.252
> > ip nat outside
> >
> > router bgp 1
> > neighbor 10.1.1.1 remote-as 2
> > redistribute static route-map STATIC-TO-BGP
> >
> > access-list 1 permit 172.16.1.10
> > access-list 2 permit 192.168.1.0
> >
> > route-map STATIC-TO-BGP
> > match ip address 1
> >
> > ip nat pool NAT-POOL 172.16.1.10 172.16.1.10
> PREFIX
> > 30
> >
> > ip nat inside source list 2 pool NAT-POOL overload
> >
> > ip route 172.16.1.10 255.255.255.255 null 0
> >
> > 172.16.1.10 is my nat pool address that I am
> > overloading for my inside
> > addresses... This is the NAT address I need to
> > advertise in to BGP so that
> > external host have a route back... I tried to use
> > /32 as prefix in the ip
> > nat pool command but got an error telling me that
> > /30 is the smalest prefix
> > I can use... Is this a problem..? the outside
> > interface are /30 net
> >
> > Will this advertising of that NAT address work
> well.
> > I dont have a lab to
> > test this, so any advice will be apreaciated...
> Any
> > other advices is alo
> > apreachiated..
> >
> > Jens
> >
> >
>
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