So here's a problem I need to solve and I am having issues researching for an answer.
I have an optical cable that's coming in through SFP and it is forced to be connected to a switch before going to the router. This link is actually a trunk and it holds a few VLANs. The problem is, the switch will take this link and connect to the router with PPPoE, and then the router will have a connection going back into the switch with dot1Q (for VLANs).
So the current scenario is this:
Switch receives an optical trunk link, switch is connected to router (PPPoE), router connects back to switch (dot1Q) in order to distribute to the rest of the network.
So is it possible? If I am not mistaken, the router on hand is the Cisco 1800 router.
And if this is not possible, any suggestions on how to deal with this? The router is not able to take the optical trunk link, which is why this whole problem is created.