> CM500V router [...]
A CM500V is a modem, not a router. Have you a router, too? Which
device has the problem?
> I cannot get my router online. [...]
"cannot" is not a useful problem description. It does not say what
you did. It does not say what happened when you did it. As usual,
showing actual actions (commands) with their actual results (error
messages, LED indicators, ...) can be more helpful than vague
descriptions or interpretations.
