In my system, we have 17 hubsites. Each of them have at least one CMTS, a couple have 4. The more homes passed, the more CMTS's. 
They're linked back to the master HE via GigE fiber networks. Every hub has redundancy.
All told we serve about a quarter million homes.
    
    Re: big systems
            There are 0 replies to this message
        
    
 
            