SmartEdge 800路由器硬件指南v5.0.7：全面解析

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本指南是SmartEdge 800路由器的硬件用户手册，版本为5.0.7，由Redback Networks Inc.发布。该公司位于美国加利福尼亚州圣何塞，其官方网站为<http://www.redback.com>，联系电话为+1 (408) 750-5000。SmartEdge 800 Router是一款专业的企业级网络设备，它在企业级通信和网络管理领域占据重要地位。 SmartEdge 800 Router的硬件指南提供了详尽的技术信息，包括但不限于路由器的硬件配置、安装步骤、功能特性、以及维护和升级指导。这些信息旨在帮助用户充分利用该设备的性能，实现高效、安全的网络连接。该路由器可能支持AOS（Advanced Operating System）、NetOp（网络操作）和SMS（Service Management Suite）等高级功能，这些都是Redback Networks Inc.的注册商标和服务标记，体现了其在用户智能网络技术方面的专业知识。作为一款用户智能网络产品，SmartEdge 800 Router强调了对版权的尊重，所有关于软件的部分必须获得第三方开发商的书面许可才能用于推广或宣传基于此软件的衍生产品。此外，手册中还包含了关于权利和限制的条款，确保用户在使用过程中遵守法律和规定，尊重知识产权。本5.0.7版硬件指南不仅适用于现有SmartEdge 800 Router的用户，也可能是新购设备的安装指南，或者是为系统管理员、技术支持人员和网络工程师提供更新和故障排查参考的重要文档。通过阅读和遵循这份手册，用户可以了解如何优化设备性能，解决可能出现的问题，并确保网络环境的稳定性和安全性。 SmartEdge 800 Router Hardware Guide Release 5.0.7是一份全面的指南，涵盖了从路由器的基础信息到高级功能应用的详细介绍，对于理解和操作SmartEdge 800路由器的用户来说，它是必不可少的技术参考资源。

System Components

1-4 SmartEdge 800 Router Hardware Guide

• Redundant controller cards and redundant file systems

• Redundant external timing sources, such as building integrated timing supply (BITS) or

synchronization supply unit (SSU), with internal timing if both sources should fail

Alarms

The SmartEdge 800 router supports three levels of alarms—critical, major, and minor:

• A critical alarm alerts the operator to a severe, service-affecting condition. It requires immediate

corrective action, regardless of time; for example, a fire.

• A major alarm alerts the operator to a service-affecting hardware or software condition, such as a

serious disruption of service, or the malfunction or failure of important circuits. It requires immediate

corrective attention and the response of a service engineer; for example, a link failure.

• A minor alarm alerts the operator to a condition that does not have a serious affect on service or on

circuits that are not essential to network operation; for example, a carrier line problem for which

transmission has been switched to another line.

System Components

This section describes the following system components:

• SmartEdge 800 Chassis

• Controller Cards

•Traffic Cards

Note Protection for cards and ports is configurable on a port basis; a mix of unprotected ports is

supported. Protection features and the types of ports that support APS are dependent on the release

of the software.

System Components

System Description 1-5

SmartEdge 800 Chassis

The SmartEdge 800 chassis has 14 slots with 2 slots dedicated to the controller cards and 12 slots available

for a flexible combination of traffic cards. A separate area of the chassis has fans for forced-air cooling.

The SmartEdge 800 chassis is designed for mounting in a standard 19- or 23-inch rack.

All cards are installed at the front of the chassis. With the exception of the traffic cards that use BNC

connectors, the cards have port connectors on their front panels. Connectors for the cards that use BNC

connectors are installed in slots 1 to 5 and 10 to 14. These BNC connectors are not available on the

SmartEdge 800s chassis.

A cable tray is located below the card slots. This unit provides the means to route the cables from the front

of the chassis to the external equipment. The adjustable cable tray provides separators that separate the

copper from the fiber-optic cables; the separators are adjustable to allow different mixes of cable types. The

extended cable tray requires no adjustments regardless of the number and types of installed cables.

The fan and alarm unit has the system LEDs mounted on it at the front of the chassis; system LEDs include

power status (A and B sources), alarm status (critical, major, minor), a failure LED for the fan and alarm

unit itself, and an alarm cutoff (ACO) button and its associated LED.

The ACO button provides one means of silencing an audible alarm; pressing the ACO button silences an

audible alarm and lights the ACO LED; pressing the button again turns off the ACO LED and, if the alarm

condition has not been corrected, sounds the alarm.

Cable brackets at the rear of the chassis provide the means for routing BNC cables and keeping them

orderly.

The chassis is cooled with six fans contained in the fan and alarm unit. A single fan failure does not impact

the operation of the system; however, to prevent overheating, the unit must be replaced as soon as possible.

To maintain the air flow through the chassis, empty slots have blank cards installed.

The rear of the chassis has connectors for power (A and B sides), alarm outputs, status inputs, dual external

timing inputs for synchronization, and dual RS-232 ports for local connections.

Electrostatic discharge (ESD) jacks are conveniently located on both the front and the rear of the chassis.

Note Support for the ACO button is dependent on the release of the SmartEdge OS.

Note Support for the alarm, status, and RS-232 dial-up modem ports is dependent on the release of the

SmartEdge OS.

System Components

System Description 1-7

Controller Cards

A controller card manages the system; it is responsible for the packet routing protocols, the SmartEdge OS

command-line interface (CLI), and communications with a network management system running the

NetOp™ Element Manager System (EMS) software. The controller card also loads all configuration

information necessary for the traffic cards. Controller cards are installed in slots7 and 8 in the

SmartEdge 800 chassis. The following versions are supported:

• XCRP Controller card

Two versions of the card support either a DS-1 interface for BITS equipment (labeled “XCRP-T1

BITS”) or an E1 interface for SSU equipment (labeled “XCRP-E1 SSU”).

• XCRP3 Controller card

The XCRP3 incorporates a faster next-generation processor. Two versions of this card differ only in the

total size of main memory. Support for BITS or SSU equipment is software selectable.

Table 1-4 lists the differences between the XCRP and XCRP3 Controller cards.

A controller card has these features and functions:

• Memory—768 or 1,280 MB of synchronous dynamic RAM (SDRAM), depending on the version of the

controller card, in which to run the SmartEdge OS and provide for shared databases that are accessed

by the traffic cards.

• Nonvolatile RAM (NVRAM) with battery

The XCRP3 Controller cards each include 512 KB of NVRAM, which stores the current state of the

system; because it is not affected by power failures or system shutdown, the system can restore

operations.

Table 1-4 Controller Card Comparison

Feature XCRP XCRP3

Main memory (total) 768 MB 768 or 1,280 MB

NVRAM No Yes

System image and file storage 192 or 256 MB 512 MB

Real-time clock No Yes

External timing implementation Separate hardware versions Software selectable

Note A second internal-storage device is also installed on all versions of the controller cards for low-level

software.

Note The capacity of the internal- and external-storage devices can vary on XCRP and XCRP3

Controller cards, but the devices installed in the active and standby controller cards need not have

the same capacity.

Note In a chassis with two controller cards, both cards must have the same memory configuration.

Note Support for NVRAM is dependent on the release of the SmartEdge OS.

System Components

1-8 SmartEdge 800 Router Hardware Guide

• Storage for SmartEdge OS files

A controller card has two internal-storage devices (Type I), one of which is used to store SmartEdge OS

images and files. (The other internal-storage device is used to store low-level system software.)

SmartEdge OS storage is organized into three partitions: p0, p1, and /flash. The p0 and p1 partitions

each store a system image and its files; the memory on a controller card can be loaded from either of

these partitions. The third partition, /flash, stores SmartEdge OS configuration files and other system-

and user-created data files.

• Optional external-storage device

A controller card has an external slot on the front panel in which you can install an optional Type I or

Type II external-storage device. When installed (the system is shipped with this front panel slot empty),

this device is used to capture crash dumps and to provide an alternate source for loading SmartEdge OS

software, when it is not possible to download it over the network.

• Support for an external timing connection

A controller card supports a BITS (DS-1) or SSU (E1) interface for external timing inputs. For the

XCRP Controller cards, the type of interface is denoted in the label suffix on the card: “T1 BITS” for

DS-1 and “E1 SSU” for E1; for the XCRP3 Controller cards, the type of interface is software selectable.

• Internal clock

The system clock for a SmartEdge router can provide synchronization using external equipment

(external timing mode), the received clock of an optical traffic card (line timing mode), or by the

internal clock, a Stratum 3 oscillator, on the controller card (internal timing mode). The external timing

interfaces allow the system clock operation to be independent of the type of external equipment and the

framing of the external line.

By default, each port on a traffic card uses the system clock for its transmit clock. However, for some

cards, you can selectively configure their ports or channels to use the clock derived from its received

signal for its transmit clock. Because a port does not interface to external timing equipment directly,

traffic card synchronization is independent of the type of external timing equipment and the version of

the controller card installed in the chassis.

• Real-time clock with battery

The XCRP3 Controller cards each support a real-time clock that is set through the SmartEdge OS and

is not affected by power failures, system shutdown, or reload.

Caution Risk of data loss. You can corrupt the system if you attempt to install an external- or

internal-storage device not obtained from Redback

, because these items have not been tested

with the SmartEdge router. To reduce the risk, use only the internal-storage devices provided by

Redback.

Note If an external-storage device is installed in the active controller card, the standby controller card,

if installed, must also have an external-storage device installed; however, the device types

(Type I or Type II) need not match.

Note Support for the real-time clock is dependent on the release of the SmartEdge OS.

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