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Sharing IP's from one data center to another via GRE Tunnel
| Posted by Dovid, 03-31-2014, 03:05 PM | | Hi. Is it possible to do this with Linux?
Server A:
eth0: 69.100.100.10/24 Default GW: 69.100.100.1/24
gre0: 69.100.100.11/24
Server B:
eth0: 200.200.200.10/27 Default GW: 200.200.200.1
gre0: gre0: 69.100.100.20/24
I want that if some one from the open internet tries to connect to 69.100.100.20 that they will be able. Is this possible? Should I be creating a bridge on the tunnel?
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| Posted by nkawit, 04-01-2014, 07:20 PM | | Bridge your uplink ports to a virtual ethernet device and bridge both ethernet devices between the DC's ... we do this all the time and it works fine
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| Posted by Dovid, 04-04-2014, 01:37 PM | | I don't know if I follow. Do you mind posting sample configs?
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| Posted by nkawit, 04-04-2014, 01:40 PM | | Create a tap on both sides, socat is useful for this. We use tinc for multiple locations.
Bridge the tap to eth0 on both sides
You can now use the IP's in both DC's on both machines
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| Posted by Dovid, 04-06-2014, 11:39 AM | | Way above my head. Do you mind "dumbing it down"? If I have eth0 on both devices what else do I need to do and what should be in the config files?
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| Posted by Dovid, 04-07-2014, 12:47 AM | | It seems like the person tried to do the same....
http://www.unix.com/ip-networking/11...tun0-eth0.html
I assume that the issue is that the return packet is going through the servers eth0 instead of interface tun0?
Last edited by Dovid; 04-07-2014 at 12:51 AM.
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