C H A P T E R
5-1
Cisco 12404 Internet Router Installation and Configuration Guide
OL-11636-01
5
Maintaining the Cisco 12404 Internet
Router
Overview
This chapter contains safety at the field replaceable unit (FRU) level, removal and
replacement instructions for FRUs and procedures to troubleshoot the FRUs.
Your Cisco 12404 Internet Router is equipped as ordered and is ready for
installation and startup when it leaves the factory. After you install and configure
your router, you will need maintenance. These procedures are designed to help
you replace a FRU and to ensure that your Cisco 12404 Internet router continues
to operate properly.
Most Cisco 12404 router FRUs can be removed and replaced with the power on
and the system operating, the online insertion and removal of components with the
power on, is known as hot swappable.
The FRU parts in
are described in this chapter.
shows the
FRUs that are hot swappable and those that are not.
Table 5-1
FRU Online Insertion and Removal Chart
FRU
Hot Swappable
DC power entry module (PEM)
Yes (if redundant PEMs installed)
DC Power distribution unit (PDU)
No
AC PEM
Yes (if redundant PEMs installed)
Air filter
Yes
todd.book Page 1 Tuesday, November 27, 2007 6:02 PM