I have a IPsec VPN problem. We have a ASA 5580 to build site to site VPN with ALU VPN gateway (from Partner). The VPN connection is not established at all. We checked pair devices configurations but cannot found any problem so far. I tried to do debug crypto isakmp 127 and got log as below. We are still trying to find out the root cause of it and could I have your advice to this problem please? Thanks. (Actual IP address are changed for confidentialty)
Apr 08 10:43:45 [IKEv1 DEBUG]: IP = 184.108.40.206, IKE SA Proposal # 1, Transform # 1 acceptable Matches global IKE entry # 2
Apr 08 10:43:45 [IKEv1 DEBUG]: IP = 220.127.116.11, constructing ISAKMP SA payload
Apr 08 10:43:45 [IKEv1 DEBUG]: IP = 18.104.22.168, constructing Fragmentation VID + extended capabilities payload
Apr 08 10:43:45 [IKEv1]: IP = 22.214.171.124, IKE_DECODE SENDING Message (msgid=0) with payloads : HDR + SA (1) + VENDOR (13) + NONE (0) total
length : 104
Apr 08 10:43:45 [IKEv1]: IP = 126.96.36.199, IKE_DECODE RECEIVED Message (msgid=0) with payloads : HDR + KE (4) + NONCE (10) + NONE (0) total
length : 180
Apr 08 10:43:45 [IKEv1 DEBUG]: IP = 188.8.131.52, processing ke payload
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...