Using Two Public IP/ISPs on one V2 2

[lleeNC]

I have a bit of a strange scenario and request from a customer. Want to see if anyone has done this before.

We have a hosted server edition connecting to another V2 that is at a customer site VIA Public IP set in the Lan1 of the V2, if that makes sense.

This customer had a fiber incident recently and the connection to the V2 was lost since the public ip was provided by Verizon, whose fiber was cut.

Customer has two ISPs, Verizon and Comcast. They want to setup a failover in case one ISP goes down.

So I was thinking of setting up another Public IP from Comcast and putting it on Lan 2. Then I would create another set up IP Office lines between the systems for the Lan 2 Public IP. I would also add a IP Route for it.

Customer has PRI so we don't need to worry about inbound/outbound calls. The V2 just needs to be able to connect back to the Primary server in the event that one of the ISPs goes down.

Has anyone done this before?

Or,

Maybe we can setup the V2 with a private address. Have the customer point the public ips to the private ip address of the V2. Create IPO lines that point to the Public IPs along with IP routes.

 

[Westi]

2 things come to mind
1 IPO on a public IP is not the best way to connect a system
2 why not use a VPN router and connect the systems that easy which then can have a backup tunnel in case the main one goes down and no change in IP because it will need an internal IP that doesn't need to change.
It is a bit of networking to get this all done but should be doable

Joe
FHandw, ACSS, ACIS

"Dew knot truss yore Spell Cheque

 

[ipohead]

There are routers with dual WAN (ISP) ports and you can chose to fallover from one to another.

As Westi says you should not use a public IP and a router with the above would usually support VPNs.

 

[lleeNC]

Thanks for the replies. And yea, I think we stuck with Public IP (in their DMZ) due to technical issues on their end.

I'll bring up the VPN solution again.

 

[aarondyck]

If they insist on using Public IP you can use the LAN2 port for the second connection and put in two IP routes - the primary route pointing to LAN1 with a metric of 0 and the backup route pointing to LAN2 with a metric of anything higher than 0. The system should prioritize the interface with the lowest metric whenever it is available.

https://bovaird.ca/