02-03-2017 07:35 PM - edited 03-05-2019 07:58 AM
hi guys
I need help with a proyect. I have 3 ISP, and 3 networks that needs to be nat overload to internet.
network 1 nat-overload to isp1
network 2 nat-overload to isp2
network 3 nat-overload to isp3
when isp1 fails the network shall work to this manner.
network 1 nat-overload to isp2
network 2 and 3 nat-overload to isp3
i know i should track my isp uplinks but i dont know how to make the change of network 1 from isp1 to isp2
Thanks
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02-03-2017 08:42 PM
Hi
To accomplish that task I see 2 different ways:
- tracking interfaces and running EEM script to change the configuration
- using PBR in combination with tracking next hop
These 2 ways are valid but one of them can make more sense based on your design
Thanks
PS: Please don't forget to rate and mark as correct answer if this answered your question
02-03-2017 08:42 PM
Hi
To accomplish that task I see 2 different ways:
- tracking interfaces and running EEM script to change the configuration
- using PBR in combination with tracking next hop
These 2 ways are valid but one of them can make more sense based on your design
Thanks
PS: Please don't forget to rate and mark as correct answer if this answered your question
02-04-2017 07:56 AM
Hi Francesco
I shall use EEM maybe, since I will have 3 interfaces VLANS, each destined to nat over a diferrent ISP.
but when the track of the first 1 isp comes up, the config will become normal or should i make another config to make a copy startup-config running
Thanks
02-04-2017 08:17 AM
With EEM you will need to have a script for each situation that means even a script for the standard nat.
That's why I proposed pbr tracking because it could be easier but this depends on your design
02-05-2017 07:38 PM
Hi Maham,
I see some issue here, if you have 3 ISP, why you are terminating all 3 ISP to one router. For redundancy, you should distribute it to different router.
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