Lecture Notes on Wide Area Networks

 

NETW-208 Accessing the WAN The Fourth Cisco Academy Course

Connecting Point A to Point B Using a WAN

What is a WAN
What Does a WAN Look Like

Methods Used to Connect Point A to Point B in LANs, CANs, MANs, and WANs

A Summary of All of the Possible Ways to Connect Point A to Point B
SONET
Analog
DDS
Switched 56K
ISDN
T Carrier
Dark Fiber
Packet Over SONET
Cable
DSL
ATM
Frame Relay
SMDS
HDLC
PPP
PPPoE
VLAN
FDDI
Ethernet
Satellite
Radio Frequency CAN
Free Space Optics CAN
Radio Frequency MAN
X.25
VPN
MPLS
SIP Trunking
FTTP
Powerline Distribution

Layer 1 Devices Used in WANs

Demarc
CSU/DSU
Analog Modem
ISDN Modem
Satellite Equipment
EWAN Equipment
IAD
ADM

Layer 2 Encapsulation Methods Used in WANs

PPP
Frame Relay

Securing the Connection Between Point A and Point B

Basic Network Security Considerations
Details on ACLs
Details on VPNs

Layer 3 Addressing for Point A and Point B

Assigning Addresses Using DHCP
Translating Addresses Using NAT
Moving to IPv6 Addresses

Repairing the Connection Between Point A and Point B

Basic WAN Troubleshooting