Timeline for Dual router, Dual ISP NAT Issue
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Nov 8, 2016 at 18:59 | history | edited | Ron Maupin♦ | CC BY-SA 3.0 |
added 473 characters in body
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| Nov 8, 2016 at 18:44 | comment | added | Ron Maupin♦ | You still need traffic destined for the other router to be received on the other router through an outside interface. | |
| Nov 8, 2016 at 18:43 | comment | added | Network Samurai | I did initially have iBGP configured between them using loopback addresses advertised via EIGRP.. The 2 locations are in diff locations but there is fiber connecting them via various switches, etc...metro ethernet. | |
| Nov 8, 2016 at 18:41 | comment | added | Ron Maupin♦ | @NetworkSamurai, also, you should really have some type of link between the two routerr using iBGP. Without that, there are scenarios where you could end up sending traffic to a blackhole. You can NAT based on a loopback address, although that requires public addresses for the loopbacks, and then one router will send the traffic to the other router, but it must get to the other router on an outside interface. | |
| Nov 8, 2016 at 18:39 | comment | added | Ron Maupin♦ | You need to do some basic design work to eliminate asymmetric routing. Somehow, you need any traffic sent through one router to return on the same router. That may mean only advertising certain routes from each router, try using MED, etc. One router cannot translate traffic based on the translation table of the other router. | |
| Nov 8, 2016 at 18:36 | comment | added | Network Samurai | Hi Ron, the 2 edge routers are in geographically different locations so there isn't a link between them. Is there another workaround for your solution? | |
| Nov 8, 2016 at 18:23 | history | answered | Ron Maupin♦ | CC BY-SA 3.0 |