I need help with basic configuration on devices (switches, routers, and PC's) On CISCO packet tracer. Any suggestion?
I haven't worked with packet tracer but in my gns3 labs I would use a 10.10.lower routerid+higher routerid.routerid
So the interface between r1 and r3 would be 10.10.13.1 for r1 to r3 and the other side would be 10.10.13.3, on the r3 side and on r2 to r3 use 10.10.23.2 on r2 and 10.10.23.3 on r3
Then run a generic eigrp setup between them using the same setup on all of them and you are done.
router eigrp 1
network 0.0.0.0 0.0.0.0
On the switch you would use a vlan say 10 give that an IP address and then put the computer in that vlan with a switchport access vlan 10 command on that interface.
You will be able to ping then but again I use gns3 for my labs, make sure the switch to router link is a trunk on the switch side (encapsulation dot1q has to be configured on the router too to allow trunking)