CHAPTER
1-1
ATM Switch Router Software Configuration Guide
OL-7396-01
1
Product Overview
This chapter provides an introduction to the Catalyst 8540 MSR, Ca talyst 8510 MSR, and
LightStream 1010 ATM switch routers.
Note This chapter provides hardware and software information for the Catalyst8540 MSR,
Catalyst 8510 MSR, and LightStream 1010 ATM switch routers. For descriptions of software features,
refer to the Guide to ATM Technology.
This chapter includes the following sections:
•Layer 3 Enabled ATM Switch Router Hardware Overview, page 1-1
•Summary of Software Features, page 1-5

Layer 3 Enabled ATM Switch Router Hardware Overview

This section provides an overview of the hardware available for the Catalyst8540 MSR,
Catalyst 8510 MSR, and LightStream 1010 Layer 3 enabled ATM switch routers and includes th e
following sections:
•Layer 3 Enabled ATM Switch Router Hardware (Catalyst 8540 MSR)
•Layer 3 Enabled ATM Switch Router Hardware (Catalyst 8510 MSR and LightStream 1010)

Layer 3 Enabled ATM Switch Router Hardware (Catalyst 8540 MSR)

The Layer 3 enabled ATM switch router uses a 13-slot, modular chassis featuring d ual, fault-tolerant,
load-sharing AC or DC power supplies. Slots 4 and 8 are occupied by the dua l, field-replaceable route
processors, which perform central processing functions and provide redun dancy. The route processors
can also accommodate the network clock module, which features a stratum3 oscillator and two building
integrated timing supply (BITS) ports. Slots 5, 6, and 7 are occupied by either two or three switch
processors, for a 20-Gbps non-EHSA or 20-Gbps EHSA switch fabric. The switch processors also
accommodate the switch processor feature card.
The remaining slots hold either a full-width module, such as the new four-port OC-12 module, or the
carrier module, which in turn accommodates one or t wo port adapters, such as the four-port OC-3 port
adapters. Along with other available interfaces, the ATM switch router provides switched ATM
connections to individual workstations, servers, LAN segments, or other ATM switches and routers
using fiber-optic, unshielded twisted-pair (UTP), and coaxial cable.