Cisco VPN Client Interface

The Cisco VPN Client for Windows supports two interfaces: CLI and GUI. This book will focus on the GUI interface of the 4.6 client. Once you have installed the client, go to Start > Programs > Cisco VPN Software Client > VPN Client to access the GUI. Sometimes the application is referred to...

PPP over Frame Relay

To configure PPP over Frame Relay, you need to associate the DLCI with a Virtual Template, which will carry the Layer 3 information. Because PPP fundamentally involves a single connection between two devices, it is most natural to use this feature on point-to-point subinterfaces: Router1#configur...

Adjusting NAT Timers

The router will keep NAT entries in the translation table for a configurable length of time. For TCP connections, the default timeout period is 86,400 seconds, or 24 hours. Because UDP is not connection based, the default timeout period is much shorteronly 300 seconds, or 5 minutes. The router will...

Enabling Frame Relay Encapsulation

On a Cisco router, Frame Relay can be configured only on the supported interfaces; it's most commonly supported on synchronous serial interfaces. A single Cisco IOS command is all that is required to enable Frame Relay on the serial interface. The encapsulation frame-relay interface configuration co...

The Origins of Frame Relay: X.25

v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Frame Relay has its roots in the X.25 protocol, a robust packet-switched WAN protocol widely deployed in the early 1970s to connect geographically...

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