Dear Nazri, You can try this = ip route z.z.z.z <mask> <gateway> ip route w.w.w.w <mask> <gateway> and deny access to z from x and w from y using access-list to serial interface. If you can provide with exact ip add of serial int and ethernet int, it w= ould have been better. Try this because I am not very sure. Ganesh.Ch CCNA Hyderabad India "md. nazri" <[EMAIL PROTECTED]> wrote: hi all, i need some help on this, 2 routers connected over frame relay, named RouterA and RouterB. RouterA ethernet has 2 ip address, X(x,.x.x.x) as primary and Y(y.y.y.y) as secon= dary. RouterB ethernet also has 2 ip address, W(w.w.w.w) and Z(z.z.z.z). X sup= posed to communicate only with W and Y only talk to Z. There is no way that X = talk to Z or Y to W. How do i achieve this by static routing or any other ways= =2E. PLS help rgds nazri telekom malaysia _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]