We have a reoccuring problem with a site to site tunnel. It will work for 1 to 15 days, then drop and both sides will then stop at MSG2. It seems like both sides don't see eachother. Ping and other protocols work during this. Sometimes it help to reboot one of the sides.
Site A (we have tried Cisco ASA 5550 and 5555x on two diffrent fiber connections) Site B (using Palo Alto, also tried Fortigate, used the same ISP provider the hole time).
We have also used AES, 3DES, MD5.
When the sites reconnect, all logs and negotiating seems normal.
I have researched this for months without luck, can anyone help me?
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Please rate as helpful, if that would be the case. Thanx
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