07-04-2011 12:46 PM - edited 02-21-2020 05:26 PM
Hi all,
trying to bring up an IPSEC VPN between a fortigate and a 3745, no success. Something is not right but I cannot tell what is it.
Looks like after they exchange Phase 1 parameters, something goes haywire and they stop talking. Any ideas?:
VPN_CONCENTRATOR#
Jul 4 16:35:51.123 GMT: ISAKMP: local port 500, remote port 500
Jul 4 16:35:51.123 GMT: insert sa successfully sa = 6608AA50
Jul 4 16:35:51.123 GMT: ISAKMP:(0:0:N/A:0):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
Jul 4 16:35:51.123 GMT: ISAKMP:(0:0:N/A:0):Old State = IKE_READY New State = IKE_R_MM1
Jul 4 16:35:51.123 GMT: ISAKMP:(0:0:N/A:0): processing SA payload. message ID = 0
Jul 4 16:35:51.123 GMT: ISAKMP:(0:0:N/A:0): processing vendor id payload
Jul 4 16:35:51.123 GMT: ISAKMP:(0:0:N/A:0): vendor ID is DPD
Jul 4 16:35:51.123 GMT: ISAKMP:(0:0:N/A:0):found peer pre-shared key matching XXX.XXX.24.253
Jul 4 16:35:51.123 GMT: ISAKMP:(0:0:N/A:0): local preshared key found
Jul 4 16:35:51.123 GMT: ISAKMP:(0:0:N/A:0):Checking ISAKMP transform 1 against priority 1 policy
Jul 4 16:35:51.123 GMT: ISAKMP: life type in seconds
Jul 4 16:35:51.123 GMT: ISAKMP: life duration (VPI) of 0x0 0x1 0x51 0x80
Jul 4 16:35:51.127 GMT: ISAKMP: encryption 3DES-CBC
Jul 4 16:35:51.127 GMT: ISAKMP: auth pre-share
Jul 4 16:35:51.127 GMT: ISAKMP: hash MD5
Jul 4 16:35:51.127 GMT: ISAKMP: default group 2
Jul 4 16:35:51.127 GMT: ISAKMP:(0:0:N/A:0):atts are acceptable. Next payload is 3
Jul 4 16:35:51.147 GMT: ISAKMP:(0:429:SW:1): processing vendor id payload
VPN_CONCENTRATOR#
Jul 4 16:35:51.147 GMT: ISAKMP:(0:429:SW:1): vendor ID is DPD
Jul 4 16:35:51.147 GMT: ISAKMP:(0:429:SW:1):Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE
Jul 4 16:35:51.147 GMT: ISAKMP:(0:429:SW:1):Old State = IKE_R_MM1 New State = IKE_R_MM1
Jul 4 16:35:51.151 GMT: ISAKMP:(0:429:SW:1): sending packet to XXX.XXX.24.253 my_port 500 peer_port 500 (R) MM_SA_SETUP
Jul 4 16:35:51.151 GMT: ISAKMP:(0:429:SW:1):Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
Jul 4 16:35:51.151 GMT: ISAKMP:(0:429:SW:1):Old State = IKE_R_MM1 New State = IKE_R_MM2
VPN_CONCENTRATOR#
VPN_CONCENTRATOR#
Jul 4 16:35:53.119 GMT: ISAKMP (0:134218157): received packet from XXX.XXX.24.253 dport 500 sport 500 XXXCUSTOMERS (R) MM_SA_SETUP
Jul 4 16:35:53.123 GMT: ISAKMP:(0:429:SW:1): phase 1 packet is a duplicate of a previous packet.
Jul 4 16:35:53.123 GMT: ISAKMP:(0:429:SW:1): retransmitting due to retransmit phase 1
Jul 4 16:35:53.623 GMT: ISAKMP:(0:429:SW:1): retransmitting phase 1 MM_SA_SETUP...
Jul 4 16:35:53.623 GMT: ISAKMP (0:134218157): incrementing error counter on sa, attempt 1 of 5: retransmit phase 1
Jul 4 16:35:53.623 GMT: ISAKMP:(0:429:SW:1): retransmitting phase 1 MM_SA_SETUP
VPN_CONCENTRATOR#
Jul 4 16:35:53.623 GMT: ISAKMP:(0:429:SW:1): sending packet to XXX.XXX.24.253 my_port 500 peer_port 500 (R) MM_SA_SETUP
VPN_CONCENTRATOR#
Jul 4 16:35:57.119 GMT: ISAKMP (0:134218157): received packet from XXX.XXX.24.253 dport 500 sport 500 XXXCUSTOMERS (R) MM_SA_SETUP
Jul 4 16:35:57.119 GMT: ISAKMP:(0:429:SW:1): phase 1 packet is a duplicate of a previous packet.
Jul 4 16:35:57.123 GMT: ISAKMP:(0:429:SW:1): retransmitting due to retransmit phase 1
Jul 4 16:35:57.623 GMT: ISAKMP:(0:429:SW:1): retransmitting phase 1 MM_SA_SETUP...
Jul 4 16:35:57.623 GMT: ISAKMP (0:134218157): incrementing error counter on sa, attempt 2 of 5: retransmit phase 1
Jul 4 16:35:57.623 GMT: ISAKMP:(0:429:SW:1): retransmitting phase 1 MM_SA_SETUP
VPN_CONCENTRATOR#
Jul 4 16:35:57.623 GMT: ISAKMP:(0:429:SW:1): sending packet to XXX.XXX.24.253 my_port 500 peer_port 500 (R) MM_SA_SETUP
VPN_CONCENTRATOR#
Jul 4 16:36:05.123 GMT: ISAKMP (0:134218157): received packet from XXX.XXX.24.253 dport 500 sport 500 XXXCUSTOMERS (R) MM_SA_SETUP
Jul 4 16:36:05.123 GMT: ISAKMP:(0:429:SW:1): phase 1 packet is a duplicate of a previous packet.
Jul 4 16:36:05.123 GMT: ISAKMP:(0:429:SW:1): retransmitting due to retransmit phase 1
Jul 4 16:36:05.623 GMT: ISAKMP:(0:429:SW:1): retransmitting phase 1 MM_SA_SETUP...
Jul 4 16:36:05.623 GMT: ISAKMP (0:134218157): incrementing error counter on sa, attempt 3 of 5: retransmit phase 1
Jul 4 16:36:05.623 GMT: ISAKMP:(0:429:SW:1): retransmitting phase 1 MM_SA_SETUP
VPN_CONCENTRATOR#
Jul 4 16:36:05.623 GMT: ISAKMP:(0:429:SW:1): sending packet to XXX.XXX.24.253 my_port 500 peer_port 500 (R) MM_SA_SETUP
VPN_CONCENTRATOR#
Jul 4 16:36:15.623 GMT: ISAKMP:(0:429:SW:1): retransmitting phase 1 MM_SA_SETUP...
Jul 4 16:36:15.623 GMT: ISAKMP (0:134218157): incrementing error counter on sa, attempt 4 of 5: retransmit phase 1
Jul 4 16:36:15.623 GMT: ISAKMP:(0:429:SW:1): retransmitting phase 1 MM_SA_SETUP
Jul 4 16:36:15.623 GMT: ISAKMP:(0:429:SW:1): sending packet to XXX.XXX.24.253 my_port 500 peer_port 500 (R) MM_SA_SETUP
VPN_CONCENTRATOR#
Jul 4 16:36:21.123 GMT: ISAKMP (0:134218157): received packet from XXX.XXX.24.253 dport 500 sport 500 XXXCUSTOMERS (R) MM_SA_SETUP
Jul 4 16:36:21.123 GMT: ISAKMP:(0:429:SW:1): phase 1 packet is a duplicate of a previous packet.
Jul 4 16:36:21.123 GMT: ISAKMP:(0:429:SW:1): retransmitting due to retransmit phase 1
Jul 4 16:36:21.623 GMT: ISAKMP:(0:429:SW:1): retransmitting phase 1 MM_SA_SETUP...
Jul 4 16:36:21.623 GMT: ISAKMP (0:134218157): incrementing error counter on sa, attempt 5 of 5: retransmit phase 1
Jul 4 16:36:21.623 GMT: ISAKMP:(0:429:SW:1): retransmitting phase 1 MM_SA_SETUP
VPN_CONCENTRATOR#
Jul 4 16:36:21.623 GMT: ISAKMP:(0:429:SW:1): sending packet to XXX.XXX.24.253 my_port 500 peer_port 500 (R) MM_SA_SETUP
VPN_CONCENTRATOR#
VPN_CONCENTRATOR#
Jul 4 16:36:31.622 GMT: ISAKMP:(0:429:SW:1): retransmitting phase 1 MM_SA_SETUP...
Jul 4 16:36:31.622 GMT: ISAKMP:(0:429:SW:1):peer does not do paranoid keepalives.
Jul 4 16:36:31.622 GMT: ISAKMP:(0:429:SW:1):deleting SA reason "Death by retransmission P1" state (R) MM_SA_SETUP (peer XXX.XXX.24.253)
Jul 4 16:36:31.622 GMT: ISAKMP:(0:429:SW:1):deleting SA reason "Death by retransmission P1" state (R) MM_SA_SETUP (peer XXX.XXX.24.253)
Jul 4 16:36:31.622 GMT: ISAKMP:(0:429:SW:1):Input = IKE_MESG_INTERNAL, IKE_PHASE1_DEL
Jul 4 16:36:31.622 GMT: ISAKMP:(0:429:SW:1):Old State = IKE_R_MM2 New State = IKE_DEST_SA
07-04-2011 12:49 PM
by the way, I am using
Cisco IOS Software, 3700 Software (C3745-ADVENTERPRISEK9-M), Version 12.4(25c), RELEASE SOFTWARE (fc2)
07-04-2011 05:49 PM
You might want to clear the tunnel on both end and try to re-establish the tunnel. From the debug output, it seems that Fortiget is sending duplicate packet, hence the 3745 complains.
07-04-2011 05:52 PM
We've tried that couple of times, I even had the 3745 reloaded and it still gives me the same messages. Any other ideas?
02-14-2012 09:03 PM
Did you get a resolution for this?
02-21-2012 02:10 AM
try to configure
no crypto ipsec nat-transparency udp-encaps
on 3745 if possible.
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