Originally Posted by nkad
I have one fiber line and now I want to add a second one for redundancy. Our ISP has a second fiber network that's completely separate from the one we are currently using. Is there any unforeseen issues going though the same company for the second line?
It really depends on what your availability requirements are.
It's good that the provider has two separate fibre networks, but if all transit traffic ends up on the same core network then it doesn't provide you with very useful redundancy. If your BGP sessions will be to two separate *** (even if they are owned by one provider) then that is somewhat better.
If at all possible you are better off with two (or more) totally separate upstreams. This is why it is to important to be located in a carrier-neutral colo facility - it makes having multiple upstreams much easier and cheaper.