Bridge/Router Installation Guide

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Cisco CRS-1 Carrier Routing System 4-Slot Line Card Chassis Installation Guide
OL-10971-07
Chapter 4 Installing and Removing SFCs, RPs, MSCs, PLIMs, and Associated Components
How to Install or Remove a Physical Layer Interface Module
Warning Class 1 Laser Product. Statement 113
Warning Class 1 LED product. Statement 126
Warning For diverging beams, viewing the laser output with certain optical instruments within a distance of
100 mm may pose an eye hazard. For collimated beams, viewing the laser output with certain optical
instruments designed for use at a distance may pose an eye hazard. Statement 282
Warning Laser radiation. Do not view directly with optical instruments. Class 1M laser product. Statement 283
Removing a PLIM
This section describes how to remove a PLIM from the Cisco CRS-1 4-slot line card chassis.
A physical layer interface module (PLIM) is paired with an MSC through the midplane of the chassis.
A PLIM provides the ability to choose several interfaces (for example, Packet-over-SONET/SDH
[POS]).
Figure 4-28 shows a typical PLIM (in this case, a 16 x OC-48c/STM-16c Packet-over-SONET/
SDH [POS]).
If you need to remove a Cisco CRS-1 SIP-800, refer to the “Removing a SIP” section in the “Installing
and Removing a SIP” chapter of the Cisco CRS-1 SIP and SPA Hardware Installation Guide on
www.cisco.com.
Note To prevent anomalies when you reinstall a new or reconfigured PLIM, we strongly recommend that you
use the shutdown command before removing a PLIM. For instructions, refer to the latest release of the
Cisco IOS XR Getting Started Guide.