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System Overview

System Description 1-3

Specification Summary

Table 1-2 summarizes the general specifications for the SmartEdge 1200 router.

Traffic Card Interfaces

The SmartEdge 1200 router supports a wide variety of interfaces, such as:

• Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) OC-192c/STM-64c

• Asynchronous Transfer Mode (ATM) using SONET/SDH OC-3c/STM-1c, OC-12c/STM-4c

• 10Base-T, 100Base-TX, 1000Base-LX, 1000Base-SX, 1000Base-T, and 1000Base-ZX; and

10000Base-ER, 10000Base-LR, and 10000Base-SR

Packet Mesh Architecture

The SmartEdge 1200 router implements a grid of cross connections in its backplane that allows any traffic

card to communicate directly to any other traffic card in the chassis. The feature allows incoming packets

to be directly routed from the receiving traffic card to the traffic card that will transmit them to the network.

Each traffic card uses a combination of a Packet Mesh ASIC (PMA) and Packet Processing ASICs (PPAs)

to perform this function.

Redundancy

The architecture of the system is fully redundant for all traffic-affecting components. Redundancy features

include:

• Dual power connections, each with separate A-side and B-side power connections

• 1+1 Automatic Protection Switching (APS) protection for ATM second-generation traffic cards: 4-port

ATM OC-3c/STM-1c and Enhanced ATM OC-12c/STM-4c

Table 1-2 General Specifications

Specification Value

Synchronization • Line timing mode (various traffic cards)

• Internal timing mode

• External timing mode

Protection type • Power: independent dual-feed

• XCRP, XCRP3, XCRP4 Controllers: 1:1

• External timing: 1:1

Operations

connections

• Management workstation (ENET): 10/100Base-T

• Console terminal (Craft): RS-232

• Alarms: audible and visual: critical, major, minor, ACO

Note Protection for cards and ports depends on the release of the SmartEdge OS.

Note Neither SmartEdge 1200 chassis provides support for traffic cards that require BNC

connections. For a list of traffic cards, see Table 1-5.

Ericsson Redback Networks SmartEdge 1200 User Manual

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