Replacing Pxm1E Sc Cables With Lc Cables Via Sc Conversion Cables; Figure 10-1 Pxm1E-4-155 Back Cards With Sc Cable - Cisco MGX 8850 (PXM1E/PXM45) Configuration Manual

Chapter 10 Switch Maintenance Procedures

Replacing PXM1E SC Cables with LC Cables via SC Conversion Cables

When performing a graceful upgrade of a PXM1E-4-155 card set that uses SC cables to a PXM1E-8-155
card set, you will need to install SC conversion cables to complete the upgrade. SC conversion cables
have an LC connector on one end, and an SC connector on the other. The LC connector fits into the FRUs
you install in the SFP-8-155 back card. The SC connector can connect to another SC cable.
Use the following procedure during a graceful PXM-8-155 upgrade if you need to install SC conversion
cables.
Figure
Step 1
This is what the configuration looks like prior to the PXM-8-155 upgrade.

Figure 10-1 PXM1E-4-155 Back Cards with SC Cable

PXM1E-4-155
back card
SC
After you have installed the first standby SFP-8-155 back card, you need to install the SC conversion
Step 2
cable or cables into the appropriate FRU or FRUS. Connect the LC end of the cable into the proper FRU
on the SFP-8-155 card. Connect the SC end of the cable to the end of the SC cable you disconnected
from the removed PXM1E-4-155 back card. The configuration should look similar to
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
10-1shows an example of a PXM1E-4-155 back card Y-cable configuration that uses SC cables.
SC cable
Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
PXM1E-4-155
back card
SC
Replacing Cards
Figure 10-2.
10-15