half ipsec-vpn down

[kh_atta]

I tried to configure a ipsec vpn with a remote site beteween fortigate and cisco firewall but the vpn status as mentioned in the below screenshoot, and no traffic pass to the remote site, are there any idea for this issue. 

[boneyard]

it can be quite a number of things, i would follow these articles:

https://docs.fortinet.com.../5.4.0/cookbook/168495

https://kb.fortinet.com/k....do?externalID=FD46611

if it doesn't solve it for you then sharing the anonymized version of the ike debug would be useful to share here.