Perle Systems P840 User Manual download pdf (Page 2)

1 Introduction

The P840 Router

The P840 router provides IP routing combined with a protocol transparent bridge. This bridge/router combination is often

the best solution to linking remotely located LANs where most of the traffic is IP with smaller amounts of traffic from other

protocols such as NetBIOS or DEC LAT.

The P840 router supports the widely implemented Routing Information Protocol, otherwise known as RIP. RIP support

allows the P840 router to interoperate with other vendors’ routers.

The P840 router will operate as delivered, providing increased LAN performance directly out of the box without the need for

complex pre-configuration. However, in those situations where specific customization is required, an easy-to-use “hotkey”

menuing Bridge/Router Manager console provides access to LAN and Link statistical information, and control of the

network configuration.

With increased LAN and Link management capability, you will be able to detect LAN and Link problems, determine

utilization patterns, and plan for future expansion that will optimize your existing data-communication resources.

The P840 router can be thought of as a group of discrete functions combined in a single box. The first functional module is

the LAN interface, which receives all LAN traffic and then decides where individual frames should be sent: to the IP router,

to the bridge, to the management system, or discarded altogether. After the LAN interface there are several functional units

including the IP router, the bridge, and the management system. Any traffic that these modules need sent across a link is then

sent to the link modules, which control data coming and going on the WAN ports. The following figure illustrates the

relationships between the various component modules in a P840 router.

LAN Interface

Module

Bridge

Module

Management

Module

Link #1

Module

Link #2

Module

IP Router

Module

Figure 1 —1 P840 Router Block Diagram

The P840 menu system provides a method to control whether IP traffic is routed through the router modules, or bridged

through the bridge module along with all other bridged data.

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Perle Systems P840 User Manual Page 2