Hello,first time, sorry for my english.so i explain my problem.i have An ipsec vpn with 2 pix 515 and a router on 1 of this site.lan_a-->Pix_a--ISP--Pix_b<--Lan_b<--router<--Lan_b2traffic for lan_a and lan_b, no problem.traffic for lan_b and lan_b2, ...