Cisco ASR 9901 Hardware Installation Guide

Online Insertion and Removal
Some field-replaceable units (FRUs) for the Cisco ASR 9000 Series Routers can be removed and replaced
with the power on and the system operating. This facility is known as online insertion and removal (OIR).
Unless otherwise noted, the maintenance tasks described in this chapter can be performed while the router
remains powered on.
Powering Off the Router
Do not turn off the switch on the power tray to remove individual power modules. Power modules support
OIR, so they can be removed and replaced with the power on and the system operating.
Caution
If it becomes necessary to turn all power off to the router, follow these steps:
Procedure
Step 1 Set the power switch on the chassis to the off (0) position.
Figure 106: Power Switch on the Cisco ASR 9901
Cisco ASR 9901, ASR 9001, and ASR 9001-S Routers Hardware Installation Guide
132
Replacing Router Components
Online Insertion and Removal

Cisco ASR 9901 Specifications

General

Brand	Cisco
Model	ASR 9901
Category	Network Router
Language	English