Specifications

10-14
Cisco MGX 8800/8900 Series Software Configuration Guide
Release 5.1, Part Number OL-6482-01, Rev. A0, January 25, 2005
Chapter 10 Switch Maintenance Procedures
Replacing Cards
Step 8 Replace SC cables that will be connected to the FRUs in the installed PXM1E-8-155 card with
appropriate LC cables or SC conversion cables.
Note If the LC cable will be linked to an SC cable on the far-end, you will need a cable with and LC
connector on one end and SC connector on the other end. If the LC cable will be linked to another
LC connector on the far end, you will need a cable with an LC connector on both ends.
Step 9 Log into the switch and configure boot parameters on the new PXM1E-8-155 card, as described in the
“Setting the LAN IP Addresses” section in Chapter 2, “Configuring General Switch Features.”‘
Step 10 Enter the dspcds command to verify that the PXM1E-8-155 comes up in the active-ready state.
Step 11 FTP the original PXM1E-4-155 configuration file onto current switch. This is the file that you saved to
a remote location in Step 2.
Step 12 Enter the restoreallcnf command to restore the old configurations on the current switch.
Step 13 Enter the commithw <Slot Number> 1 command to commit the hardware upgrade on the switch. Replace
<Slot Number> with the slot number for the active PXM1E-8-155 card. In a Cisco MGX 8850 (PXM1E)
switch, the <Slot Number> parameter can be 7 or 8. In a Cisco MGX 8830 switch, the <Slot Number>
parameter can be 1 or 2. The number 1 specifies that this card has been upgraded from a PXM1E-4-155
to a PXM1E-8-155.
In the following example, the user commits the hardware upgrade on the PXM1E-8-155 in slot 2 of an
MGX 8830 switch.
pxm1e.2.PXM.a > commithw 2 1
Step 14 Enter the dspcd <slotnumber> command to verify that the reserved front card is a PXM1E-8-155.
Replace <slotnumber> with the slot number of the active PXM1E card.
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.
Step 1 Figure 10-1shows an example of a PXM1E-4-155 back card Y-cable configuration that uses SC cables.
This is what the configuration looks like prior to the PXM-8-155 upgrade.