as i'll see the base router of R2 it's an 3825, and this one has a pair of Gig interfaces, and on CAT1 has 2 gig interfaces, their choice those interfaces to connecto to CAT2 and to R2.
and if you don't had the router 3825 or 3845, you'll use fastethernet interfaces on your router connected to fastethernet interface on CAT1. cheers. edgar _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
