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Multi-WAN with same gateway

Hello,

Our provider (Unitymedia, Germany) is giving us two links with IP addresses from the same network range. Gateway for both of these links is the same.
The IP assignment is done via dhcp reservation. Each link has its own cable modem, both links have the same speed.

Like this but with public IPs:

Is it posssible to use Multi-WAN with load-balancing? And how is it configured?

Greetings,
Michael

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0 lferrara over 9 years ago

MIchael,

you have 2 links and same network range. It will not does not work, I think. The only thing you can do is to create a bridge on both ports belonging to WAN zone.

Did you try to configure 2 different ports and giving them the IP as WAN zone?
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0 MichaelDegen over 9 years ago in reply to lferrara

Hello Iferrara,

thanks for the Reply. It is more a pre-buy question. Currently we have 2 routers with one internal subnet uses one link, the other the other link. Not a satisfying solution.

We're looking for a solution capable of load-balancing the 2 links. If this is possible with Sophos XG (or UTM), my next step would be the setup of a test environment.

Greetings,
Michael
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0 Ben over 9 years ago in reply to MichaelDegen

can't see a reason why this wouldn't work, i have the same setup with 2 WANs on a CGN private subnet.
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0 MichaelDegen over 9 years ago in reply to Ben

Hello Ben,

That sounds good. Do you have any special configuration?

Greetings,
Michael
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0 Ben over 9 years ago in reply to MichaelDegen

i use multipath to route one internal subnet over WAN A, and another subnet over WAN B.

Basicly using 1 Firewall for 2 Families, each using their own WAN.
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0 lferrara over 9 years ago in reply to Ben

Good to know. I never tried it.

If the XG does not complain that you can create 2 WAN interface with same IP range, after on Policy rule you have DSCP marking and WAN Link Manager also inside XG. So
you can decide how to load balance a single Rule.
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0 lferrara over 9 years ago in reply to Ben

Good to know. I never tried it.

If the XG does not complain that you can create 2 WAN interface with same IP range, after on Policy rule you have DSCP marking and WAN Link Manager also inside XG. So
you can decide how to load balance a single Rule.
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0 Ben over 9 years ago in reply to lferrara

oh sorry, i didnt realize i was on the XG Subforum, i am only using the UTM. (no-coffee-brain this morning)
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