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MX2020 Craft Interface Description

 

The craft interface allows the user to view status and troubleshooting information at a glance and to perform many system control functions. It is hot-insertable and hot-removable.

An extended craft interface is also available for use with the extended cable manager. The extended craft interface functions the same as the standard craft interface but provides additional clearance for maintenance on the extended cable manager.

The craft interface is located on the front of the router above the upper fan tray and contains LEDs for the router components, the alarm relay contacts, and alarm cutoff button.

Refer to Figure 1, Figure 2 and Table 1 for a description of the LEDs, buttons, and connectors for the craft interface.

Figure 1: Craft Interface Components
Craft Interface
Components
Figure 2: Extended Craft Interface
Extended Craft Interface

Table 1: Craft Interface LEDs, Buttons, and Connectors

Function No.

Label

Description

1

PSM

Status LEDs for PSMs 0 through 8 and 9 through 17

2

FANTRAYS

Status LEDs for fan trays 0 through 3

3

RE0 (MASTER, ONLINE, and OFFLINE)

RE1 (MASTER, ONLINE, and OFFLINE)

Two sets of status LEDs per host subsystem. There are three LEDs per Routing Engine.

4

MINOR ALARM

Minor Alarm LED for monitoring or maintaining the MX2020

5

MAJOR ALARM

Major Alarm LED for critical conditions, that can result in system shutdown

6

ACO/LT

Alarm Cutoff/ Lamp Test Button. Turns off both minor and major alarms and deactivates the device attached to the corresponding alarm relay contact on the craft interface

7

M/S CHASSIS NUM

Chassis ID and Standalone Dial. These two dials are used. One dial is used to indicate the chassis number for multi-chassis configurations. The second dial is used to indicate whether the chassis is operating in standalone mode or as part of a multi-chassis system.

8

MINOR ALARM–[NC C NO]

MAJOR ALARM–[NC C NO]

Two sets of alarm terminal contacts. Each consisting of normal open and normal closed relays that signal a minor or major alarm when broken.

9

LC 10 through LC 19

Online and Offline buttons located next to each line card allows you to take individual line cards offline or online.

Status LEDs for the upper ten line cards.

10

CB-RE 0 and CB-RE 1

Online and Offline buttons located next to each Control Board and Routing Engine (CB-RE) allows you to take individual CB-REs offline or online.

Status LEDs for the two CB-REs cards.

11

LC 0 through LC 9

Online and Offline buttons located next to each line card allows you to take individual line cards offline or online.

Status LEDs for the lower ten line cards.

12

SFB 0 through SFB 7

Online and Offline buttons located next to each SFB allows you to take individual SFBs offline or online.

Status LEDs for eight SFBs.