@stephenw10
hello stephenw10,
sorry for the delay i was not at the office for testing.
I feel so stupide to haven't think about that alone, you were completly right as soon as ii changed serial to vga i could see all the boot.
i steel have a lot a difficult to access my web interface cause it take ages to change page, i suppose it's because i have only one router with the Ha and no internet cause the old routeur is still in production. i suppose that the fact the the routeur hang several minute on ipsec when booting is du too that cause too. i will switch the routeur next week if everything is ok.
Anyway thanks a lot for your help.
have a nice week end