can any one help me out , i have 2 router each at 2 diffrent AS, they are connectd through 2 diffrent service providers.the dia is enclosed, on router A i want to route seg 1 traffic on normal senirio and seg 1 & 2 traffic only when SP2 fails.
on router B , seg 2 and 1 & 2 on failing SP1 .
also on routers C ,i want to route seg 3 traffic in normal condition and seg 3 & 4 traffic only when sp2 fails.
Router D , segment 4 on normal confition & 3&4 on SP1 FAIL.
Ebgp - external protocal
Ibgp - b/n rourers in same AS.
THANKS IN ADVANCE