Hi @simccarthy ,
The issue is because you did not configure any route between the subnet on R1 and the one on R2.
You could configure a routing protocol or just a simple static route as follow would do.
R1:
ip route 172.16.12.0 255.255.255.0 192.168.0.2
R2:
ip route 10.10.1.0 255.255.255.0 192.168.0.1
Regards,
Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
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