I am just curious what the typical topology of routing out to the ISP is and an example of the equipment used. See the following diagram:
It shows multiple routes summarized to the E router. So let's say I have Comcast. They provide me a modem/router. What equipment might this connect to? Multiple routers with 100's of Comcast customers in the area? If so, do they make Cisco routers that provide dozens of interfaces just for this application (ISP's)?
So to summarize, I basically want to find out how 100's of customers are consolidated into the ISP and the equipment used.