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IPsec tunnel issue (between Cisco & Fortigate)

m_sadeghpour
Level 1
Level 1

Hi all

Im trying to install a site to site IPsec between 2 different routers (Cisco 3750 & Fortigate 100A) (R1 & Fortigate100A)

with out installing IPsec, the whole scenario is working properly.

But unfortunately the IPsec tunnel (between R1 & Fortigate100A) is not functioning properly.

(Pls look at to the jpg attached file)

The log message is received in routers are displayed below:

Cisco: R1:

%CRYPTO-6-IKMP_MODE_FAILURE: Processing of Quick mode failed with peer at 192.168.43.75

Fortigate 100A:

ike  0: no established IKE SA for exchange-type   Informational from  192.168.43.195:500->192.168.43.75 3 cookie    d3695c6cea17475a/d18e1af773e658b9, drop

ike 0:Cisco-P1:6899: authentication OK

ike  0: no established IKE SA for exchange-type   Informational from  192.168.43.195:500->192.168.43.75 3 cookie    414bd35ab92bc4ef/d18e1af78ed17bf9, drop

ike 0:Cisco-P1:6899:Cisco-P2:14802: quick-mode     negotiation failed due to retry timeout

ike 0:Cisco-P1:6900: authentication OK

I have configured both routers as follow:

Cisco:

Hostname:R1

isakmp Policy 1

Hash: sha

Authentication: pre-share

Encryption: AES128

DH group:2

Lifetime 86400

isakmp Key: cisco1 address 192.168.43.75

crypto IPsec transform-set myset esp-aes & esp-sha-hmac

Access-list:101 permit ip 10.0.0.0 0.0.0.255 10.10.10.0 0.0.0.255

Crypto map R1_to_Fortigate100A 10 IPsec-Isakmp

set Peer:192.168.43.75

Match address 101

Set transformset: myset

int fa 0/0 #  Crypto map R1_to_Fortigate100A

Fortigate:

hostname: Fortigate100A

Phase1:

     Preshared key: cisco1

     Remote gateway ip address: 192.168.43.195

     mode: agressive

     Accept any peer

P1 Proposal:

     AES 128/ SHA1

     AES 192/ SHA1

     AES192/SHA 256

     DH: 2    

     Keylife: 86400

Phase2:

     AES 128/ SHA1   

     AES 192/ SHA1

     AES192/SHA 256

     keylife:86400

     Quick mode selector:

                              Source address: 10.10.10.0/24

                              Destination address: 192.168.43.0/24

I will be very very  very thankful if you informed about my any possible mistakes an its solution

Happy new year

Moe

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