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Posted to users@cloudstack.apache.org by Fariborz Navidan <md...@gmail.com> on 2024/01/13 23:29:43 UTC
GRE tunnel between user VM and a outside server not working after KVM host reboot
Hi Friends,
We have a client who is running two VMs on our cloud. They are running GRE
tunnel between their VMs and a server outside our network. After last
reboot of KVM hosts, their GRE tunnel stopped working. The GRE tunnel is
established and private IPs are assigned to both peers buy peers are not
able to reach each other using their private IP addresses.
We have already added all protocols and CIDRs (0.0.0.0/0) into the security
groups belonging to the VMs.
Should we do something on hosts to allow GRE tunneling?
Please advise.
Kind Regards.
Fwd: GRE tunnel between user VM and a outside server not working after KVM host reboot
Posted by Fariborz Navidan <md...@gmail.com>.
---------- Forwarded message ---------
From: Fariborz Navidan <md...@gmail.com>
Date: Sun, 14 Jan 2024, 02:59
Subject: GRE tunnel between user VM and a outside server not working after
KVM host reboot
To: <us...@cloudstack.apache.org>
Hi Friends,
We have a client who is running two VMs on our cloud. They are running GRE
tunnel between their VMs and a server outside our network. After last
reboot of KVM hosts, their GRE tunnel stopped working. The GRE tunnel is
established and private IPs are assigned to both peers buy peers are not
able to reach each other using their private IP addresses.
We have already added all protocols and CIDRs (0.0.0.0/0) into the security
groups belonging to the VMs.
Should we do something on hosts to allow GRE tunneling?
Please advise.
Kind Regards.
Re: GRE tunnel between user VM and a outside server not working after KVM host reboot
Posted by Wei ZHOU <us...@gmail.com>.
Hi,
Can you add a security group rule with protocol number 47 (GRE) ?
-Wei
On Sun, 14 Jan 2024 at 00:30, Fariborz Navidan <md...@gmail.com>
wrote:
> Hi Friends,
>
> We have a client who is running two VMs on our cloud. They are running GRE
> tunnel between their VMs and a server outside our network. After last
> reboot of KVM hosts, their GRE tunnel stopped working. The GRE tunnel is
> established and private IPs are assigned to both peers buy peers are not
> able to reach each other using their private IP addresses.
>
> We have already added all protocols and CIDRs (0.0.0.0/0) into the
> security
> groups belonging to the VMs.
>
> Should we do something on hosts to allow GRE tunneling?
>
> Please advise.
>
> Kind Regards.
>