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masoom alam,

It’s been a little while since I’ve used the reference VPN implementation, but here are some suggestions/questions…

Can you show the ipsec-site-connection-create command used on each end?
Can you show the topology with IP addresses used (and indicate how the two clouds are connected)?
Are you using devstack? Two physical nodes? How are they interconnected?

First thing would be to ensure that you can ping from one host to another over the public IPs involved. You can then go to the namespace of the router and see if you can ping the public I/F of the other end’s router.

You can look at the screen-q-vpn.log (assuming devstack used) to see if any errors during setup.

Note: When I stack, I turn off neutron security groups and then set nova security groups to allow SSH and ICMP. I imagine the alternative would be to setup neutron security groups to allow these two protocols.

I didn’t quite follow what you meant by "Please note that my two devstack nodes are on different public addresses, so scenario is a little different than the one described here: https://wiki.openstack.org/wiki/Neutron/VPNaaS/HowToInstall”. Can you elaborate (showing the commands and topology will help)?

Germy,

I have created this BP during Juno (unfortunately no progress on it however), regarding being able to see more status information for troubleshooting: https://blueprints.launchpad.net/neutron/+spec/l3-svcs-vendor-status-report

It was targeted for vendor implementations, but would include reference implementation status too. Right now, if a VPN connection negotiation fails, there’s no indication of what went wrong.

Regards,


PCM (Paul Michali)

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On Sep 29, 2014, at 1:38 AM, masoom alam <masoom.alam at gmail.com> wrote:

> Hi Germy
> 
> We cannot ping the public interface of the 2nd devstack setup (devstack West). From our Cirros instance (First devstack -- devstack east), we can ping our own public ip, but cannot ping the other public ip. I think problem lies here, if we are reaching the devstack west, how can we make a VPN connection
> 
> Our topology looks like:
> 
> CirrOS --->Qrouter---->Public IP -------publicIP---->Qrouter----->CirrOS
> _________________________             _____________________________
>        devstack EAST                                        devstack WEST
> 
> 
> Also it is important to note that we are not able to ssh the instance private ip, without sudo ip netns qrouter id so this means we cannot even ssh with floating ip.
> 
> 
> it seems there is a problem in firewall or iptables. 
> 
> Please guide
> 
> 
> 
> On Sunday, September 28, 2014, Germy Lure <germy.lure at gmail.com> wrote:
> Hi,
> 
> masoom:
> I think firstly you can just check that if you could ping from left to right without installing VPN connection.
> If it worked, then you should cat the system logs to confirm the configure's OK.
> You can ping and tcpdump to dialog where packets are blocked.
> 
> stackers:
> I think we should give mechanism to show the cause when vpn-connection is down. At least, we could extend an attribute to explain this. Maybe the VPN-incubator project is a chance?
> 
> BR,
> Germy
> 
> 
> On Sat, Sep 27, 2014 at 7:04 PM, masoom alam <masoom.alam at gmail.com> wrote:
> Hi Every one, 
> 
> I am trying to establish the VPN connection by giving the neutron ipsec-site-connection-create.
> 
> neutron ipsec-site-connection-create --name vpnconnection1 --vpnservice-id myvpn --ikepolicy-id ikepolicy1 --ipsecpolicy-id ipsecpolicy1 --peer-address 172.24.4.233 --peer-id 172.24.4.233 --peer-cidr 10.2.0.0/24 --psk secret
> 
> For the --peer-address I am giving the public interface of the other devstack node. Please note that my two devstack nodes are on different public addresses, so scenario is a little different than the one described here: https://wiki.openstack.org/wiki/Neutron/VPNaaS/HowToInstall
> 
> The --peer-id is the ip address of the Qrouter connected to the public interface. With this configuration, I am not able to up the VPN site to site connection. Do you think its a firewall issue, I have disabled both firewalls with sudo ufw disable. Any help in this regard. Am I giving the correct parameters?
> 
> Thanks
> 
> 
> 
> 
> 
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