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Why not just create the null route then add a network statement into BGP instead of all that redistributing with a filter?
—–Original Message—– From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Jens Petter Sent: Friday, June 30, 2006 4:28 PM To: masterdt@yahoo.com; ccielab@groupstudy.com Subject: RE: advertising NAT pool in to BGP
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 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 > >