VPN between juniper SSG 550 - Cisco 1841
After succesfully setting op a route based VPN with on the other side a cisco 1841 device - ping replies were received on both sides of the tunnel - the VPN suddenly went down.
I tried rebuilding it by switching the tunnel on and off but it doesn’t seem to get up again.
the log shows me IKE <ip>Phase 1: Retransmission limit has been reached.
Did anyone experience likewise behaviour?
Here it goes, apparently the cisco device had some ACL which were blocking!!!
So the problem has been solved, but actually no change on the juniper side was needed
You cant force the device to be a responder. But, if it receives VPN message1 and given that the VPN is not already established, it will respond.
That can be a possibility and I tought of it.
But how can I set the juniper as responder side?
It is not necessary to be able to ping the peer. I suggested it as a test, to confirm there was connectivity between them.
From the debug, you can see that message 1 sent @ 2012-10-11 11:51:50 does not get a response from 126.96.36.199. Then we are re-sending @ 11:51:54. Why not check the logs on Cisco?
You can also try initiating the VPN from the Cisco end and look at the event logs - debug IKE for more information.
Thanks for your reply:
The remote peer is a fixed IP and when I try to ping it from the juniper device I get a 100% packet loss.
2012-10-11 11:51:50 : IKE <ip>re-trans timer expired, msg retry (8) (0001/0)
2012-10-11 11:51:50 : IKE <ip>Initiator sending IPv4 IP 188.8.131.52/port 500
2012-10-11 11:51:50 : IKE <ip>Send Phase 1 packet (len=156)
2012-10-11 11:51:54 : IKE <ip>re-trans timer expired, msg retry (9) (0001/0)
2012-10-11 11:51:54 : IKE <ip>Initiator sending IPv4 IP 184.108.40.206/port 500
2012-10-11 11:51:54 : IKE <ip>Send Phase 1 packet (len=156)
Is it needed to be able to ping the remote peer?
As the VPN was already up some time ago?</ip></ip></ip></ip></ip></ip>
Hi, ‘Retransmission limit has been reached’ usually points to not receiving a response from the peer.
How have you defined the peer? Is it a static IP or hostname or a dynamic peer? See if you can just ping the Cisco public IP from the juniper FW.
Also, a ‘debug ike basic’ will help you here.