I have a been having problems setting up a LAN-to-LAN IPSec tunnel between Cisco Router 181X and a Cisco VPN Concentrator 300. All configuration are correct but, the tunnels fails to pass IKE Phase 1. IKE status remains at MM_NO_STATE.
Viewing my debug (Cisco Router), it shows IKE phase 1 completing with QM_IDLE status, then keys gets deleted shortly after.
Partial debug out (see attachment for cisco181 & VPN Concentrator300)
*May 12 09:04:27.063: ISAKMP:(0:32:HW:2):Input = IKE_MESG_INTERNAL, IKE_PHASE1_COMPLETE
*May 12 09:04:27.063: ISAKMP:(0:32:HW:2):Old State = IKE_P1_COMPLETE New State = IKE_P1_COMPLETE
*May 12 09:04:28.235: ISAKMP (0:268435488): received packet from 220.127.116.11 dport 500 sport 500 Global (I) QM_IDLE
*May 12 09:04:28.235: ISAKMP: set new node -585097 to QM_IDLE
*May 12 09:04:28.235: ISAKMP:(0:32:HW:2): processing HASH payload. message ID = -585097
Any ideas what exactly is going on here and what might be wrong?