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By performing a simple Cisco Express Forwarding table lookup , the switch forwards packets at wire rate , independent of the number of flows transiting the switch . Air Europe operates long-haul charter and scheduled flights from Italy to holiday destinations and AOM operates scheduled flights in France , to European destinations and to the French overseas departments . The Cisco Catalyst 2960 Series can classify , reclassify , police , mark , queue , and schedule incoming packets and can queue and schedule packets at egress . How do we live well without undermining the natural systems on which we fundamentally depend ? Multilevel access security on the switch console and the Web management interface prevents unauthorized users from accessing or altering switch configurations and can be implemented using an internal user database on each switch or a centrally administered TACACS + or RADIUS server . Given the breadth of opinions on teaching , I am sure that I have plenty of ground to cover in my quest to explore the frontiers of instruction . The Cisco Catalyst 3560 can classify , reclassify , police , mark , queue , and schedule incoming packets , and can queue and schedule packets at egress .