Cisco routers (distribution) aggregate traffic from multiple access routers either at the same site or they collect the data from multiple sites to a major enterprise location. Cisco routers for distribution are often responsible for enforcing quality of service across the WAN. For this Cisco routers must have substantial processing intelligence.
Cisco routers provide connectivity to groups
Cisco routers provide connectivity to groups of servers or to external networks. Cisco router’s functionality must be considered very important to overall security structure.