Doh! Stupid typo staring me in the face. Thank you, now things seem to be working.

Can anyone help me with what I'm doing wrong in my lab? I'm trying to setup/test a CG-NAT configuration which seems to be working but when I try connecting it to my ISP router in the lab I can't get out to the internet. Yes I know I'm doing multiple NAT's but I'm trying to try test the configuration...

Ugh. For some stupid reason I thought those SFPs were SM not MM. Doh! You are correct putting the right cable in there solves the problem.

I'm trying to setup a pair of CCR2116-12G-4S+ routers in my lab to simulate the internet connection I'll have once Lumen delivers my circuit. I've put the following very basic router config on both devices. From each router I can ping it's own interface but I cannot seem to ping from router1 -> rout...