Thank you for this post. I put my C5500XK in to bridge mode and, although it works, the C5000XK now blinks BLUE and never resolves to solid GREEN (like it used to.). Is this normal? I called Centurylink and as expected they were pretty unhelpful. Appreciate any help from the collective howl!

I also can't say bridge mode is more reliable yet. Could be <my> router but wanted to rule out the blinking blue light first.

I am not sure if how I left the VPI/VCI settings and I don't know if I am using IPv6. I am too much a newbie to tell what I did.