Patton electronic 2800 user manual Serial port configuration task list, Disabling an interface

OnSite 2800 Series User Manual 4 • Serial port configuration

Introduction

This chapter provides an overview of the serial port and describes the tasks involved in its configuration through the OnSite router, it includes the following sections:

•Serial port configuration task list

•Configuration tasks

•Examples

The V.35 standard is recommended for speeds up to 48 kbps, although in practice it is used successfully at 4 Mbps. The X.21 standard is recommended for data interfaces transmitting at rates up to 2 Mbps and is used primarily in Europe and Japan.

The synchronous serial interface supports full-duplex operation and allows interconnection to various serial network interface cards or equipment.

The OnSite device supports the Frame Relay protocol on the synchronous serial interface. Frame Relay is an example of a packet-switched technology. Packet-switched networks enable end stations to dynamically share the network medium and the available bandwidth. Variable-length packets are used for more efficient and flex- ible transfers. These packets are then switched between the various network segments until the destination is reached. Statistical multiplexing techniques control network access in a packet-switched network. The advan- tage of this technique is that it provides more flexibility and more efficient use of bandwidth.

Serial port configuration task list

Perform the tasks in the following sections to configure a synchronous serial interface:

•Disabling an interface (see page 45)

•Enabling an interface (see page 46)

•Configuring the serial encapsulation type (see page 47)

•Entering Frame Relay mode (see page 48)

•Configuring the LMI type (see page 48)

•Configuring the keep-alive interval (see page 49)

•Entering Frame Relay PVC configuration mode (see page 49)

•Configuring the PVC encapsulation type (see page 50)

•Binding the Frame Relay PVC to IP interface (see page 50)

•Disabling a Frame Relay PVC (see page 52)

•Displaying Frame Relay information (see page 54)

Disabling an interface

Before you replace a compact serial cable or attach your OnSite to other serial equipment, use the shutdown command to disable the serial interfaces. This prevents anomalies and hardware faults. When you shut down an interface, it has the state CLOSED in the show port serial command display.

Introduction 45