Replacing A Cable On An Mx2020 Mpc Or Mic; Removing A Cable On An Mx2020 Mpc Or Mic; Figure 180: Alarm Relay Contacts; Table 96: Connecting Alarm Relay Contacts - Juniper MX2020 Hardware Manual

MX2020 3D Universal Edge Router Hardware Guide

Replacing a Cable on an MX2020 MPC or MIC

Removing a Cable on an MX2020 MPC or MIC

424

Figure 180: Alarm Relay Contacts

1
M/S CHASSIS NUM
LC
17 18 19
6 SFB 7 CB-RE 1
7 8 LC 9

Table 96: Connecting Alarm Relay Contacts

Function No. Label
1 MINOR ALARM—[NC C NO]
MAJOR ALARM—[NC C NO]
1. Removing a Cable on an MX2020 MPC or MIC on page 424
Installing a Cable on an MX2020 MPC or MIC on page 425
2.
Removing and installing cables on an MPC or a MIC does not affect router function, except
that the component does not receive or transmit data while its cable is disconnected.
To remove a fiber-optic cable:
If the component connects to fiber-optic cable, have ready a rubber safety cap for
1.
each cable and transceiver.
If removing all cables connected to the component, use one of the following methods
2.
to take the component offline:
To take an MPC offline:
Press and hold the corresponding online button on the craft interface. The green
OK LED next to the button begins to blink. Hold the button down until the LED
goes off.
Issue the following CLI command:
user@host>request chassis fpc slot slot-number offline
For more information about the command, see the
Services Command Reference
Description
The alarm relays consist of three
terminal contacts with a normal
closed (NC), common (C), and
normal open (NO) relays that
signal a minor or major alarm when
broken.
Junos OS System Basics and
.
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