I'd say 5000 is the model number, not the amount of router. With only 500+ servers, if they have 5000+ (amount) router, things don't look quite right...
dennis2(dennis2)
BTW, this position is more suitable for a ccie if they really have 5000+ (amount) routers, but the salary doesn't look quite right for ccie...so I'd say they don't have 5000+ routers