NAT Advertisement through EIGRP
All,
Another scenario where I need help.
I am performing NAT on a router and would like to know how can I advertise NAT IP address through EIGRP?
R1
R2 (NAT)
R2 real IP -192.168.1.1
R2 NAT IP - 10.10.1.1
Question is how to receive 10.10.1.1 on R1 through EIGRP.
Another scenario where I need help.
I am performing NAT on a router and would like to know how can I advertise NAT IP address through EIGRP?
R1
R2 (NAT)
R2 real IP -192.168.1.1
R2 NAT IP - 10.10.1.1
Question is how to receive 10.10.1.1 on R1 through EIGRP.
Comments
CCIE Progress - Hours reading - 15, hours labbing - 1
Thanks, I was thinking the same, and actually loopback interface doesn't need any NAT configuration. I can just advertise that interface in EIGRP.
Does anyone have any other experience?
So where are you NATTING to and what are you trying to achieve, is there a 3rd router involved in this? Are you NATTING from 10 network to 192, if so there is no need for router 1 to know about network 10.
I am NATTING from 192.x network to 10.x network and wants to receive 10.x network onto R1 through EIGRP.
No other router is involved in this environment.
Do you have the two routers in different subnets is that what you mean?
Can you advise what ip addresses are used for R1?
Thanks
router.png
Diagram shows the IP addressing scheme, I am performing NAT on R2 router to move 192.168.1.x network to 10.10.1.x network.
1. Create loopback interface and assign it to the same IP range, than advertise the range through EIGRP
2. Create static route pointing to null, and advertise it through EIGRP by network statement.
3. Create static route pointing to null, than redistribute static route to EIGRP. Only problem is you will end up redistributing all static routes and to restrict the same you have to use route-map.
My personal fav is 2nd step, as it require minimum configuration and less admin work.