[ovs-discuss] tunnel between open vswitch on xenservers

Justin Pettit jpettit at nicira.com
Mon Oct 10 00:54:19 UTC 2011


On Oct 9, 2011, at 4:38 PM, terryxing wrote:

> I want to tunnel two openvsiwtch on two physical xenserver  behind the firewall. Only two firewalls at each site have the public ip.  If there any way I can make that work ?
> 
> I heard that the GRE is using port 47 and I enable the NAT on the firewall for port 47. But It does not work. Any idea ?

It's using IP protocol 47, not a TCP or UDP port.  So, you will need to write the appropriate rule to allow it to pass.  If you're using NAT, you'd also need to configure forwarding for that as well.

--Justin





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