You can use a simple Tcl script to test connectivity between your devices:
foreach ip {
x.x.x.x
x.x.x.x
x.x.x.x} { ping $ip
}
For example, below is one tcl script that I had ready to check NLRI after performing an OSPFv3 lab.
tclsh
foreach ip {
2000:1:1:12::1
2000:1:1:1::1
2000:11:11:11::11
2000:1:1:23::2
2000:1:1:12::2
2000:2:2:2::2
2000:22:22:22::22
2000:1:1:34::3
2000:1:1:23::3
2000:3:3:3::3
2000:33:33:33::33
2000:1:1:34::4
2000:4:4:4::4
2000:44:44:44::44} {ping $ip rep 10}
tclquit
There is an obvious advantage when using these kind of scripts, that is you end up saving lot of time during practise and this is also a must use tool during ccie lab as well; especially when you want to check your basic network reachability before you break for lunch.
HTH