SYNCHRONOUS (LEASED-LINE) WAN

PPP is the DATA-LINK of choice. The reason this is so, is that PPP is the standard protocol for data transmission over WAN links. PPP is the default.

For PPP to work with a new unit:

• Power-on the unit.
• Attach the cable between the router and the CSU/DSU.
• Attach the console cable between the COM port on the PC that will be used to configure the router and the router's console connector and use some terminal emulation package (WlNTerm, HyperTerm) on your PC.
• This will be a 'direct connect' with 8 data-bits, 1 stop-bit, no parity and hardware flow control.

Facts:

The ISP told you your end of the WAN link has an Internet Protocol (IP) address. The IP address is in two parts:
• IP address 206.51.17.1
• IP mask 255.255.255.0

The IP address for the other end of the WAN link is

• 206.51.17.2, mask: 255.255.255.0 You know that there is a unique IP address available for use on your Ethemet port. The IP address for your Local Area Network (LAN) is
• 128.133.15.6 The mask is 255.255.255.0 Let us begin: Addressing for the Protocol Layer

*t 6

Config>PROTOCOL ip

• In this case, we are using IP. We need to tell the protocol where we are. Internet protocol user configuration

IP config>ADD ADDRESS 0 128.133.15.6 255.255.255.0

• Interface #0 is our LAN port.

IP config>ADD ADDRESS 1 206.51.17.1 255.255.255.0

• Interface #1 is our WAN port.

IP config>rip

• How will we learn about other networks? Will we use RIP?

RIP config>ENABLE rip

• If we will use RIP (this alone may make the link stay active) we must enable it.

RIP config>ex

• If we don't want to use a routing protocol, we can merely use a static route, instead.

IP config>SET DEFAULT NETWORK-GATEWAY 206.51.17.1

• This will be the address at the other end of the WAN link. gateway's cost [0]?

IP Config> ^p