Cisco 2521LF - 2521LF Router Manual de usuario Pagina 26

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Copyright © 1997 Cisco Systems, Inc.
© 1999, Cisco Systems, Inc.
www.cisco.com
Cisco Router
Architecture
Cisco Router
Architecture
6-52CSE: Networking Fundamentals WAN Basics
© 1999, Cisco Systems, Inc.
www.cisco.com
List of ReachableList of Reachable
NetworksNetworks
Layer 3
Switch
Packet
Packet
Frame
Frame
Frame
OSPF, EIGRP,BGP
Static Routes, Etc…
OSPF, EIGRP,BGP
Static Routes, Etc…
Layer 2 Encapsulation
TTL-1
Layer 3 Checksum
What Is a Router?
What Is a Router?
Routers perform
two main
functions
Control path
routines
Data path control
(switching)
Packet
Packet
Packet
Packet
Packet
Packet
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