Table of Contents
6 7750 SR-a4 and SR-a8 Installation Guide
Port Line Rate .............................................................................................................................................154
Technical Specifications..............................................................................................................................155
Power Consumption ....................................................................................................................................155
4-port 10GigE SFP+ MDA-a LEDs ..............................................................................................................155
6-Port 10GigE SFP+ and 1-Port 40GigE QSFP+ Combo MDA-aXP ...............................................................157
Technical Specifications..............................................................................................................................158
Power Consumption ....................................................................................................................................158
6-Port 10GigE SFP+ and 1-Port 40GigE QSFP+ Combo MDA-aXP LEDs ................................................158
10-port 10GigE SFP+ MDA-aXP Overview ......................................................................................................160
Technical Specifications..............................................................................................................................160
Power Consumption ....................................................................................................................................161
10-port 10GigE SFP+ MDA-aXP LEDs .......................................................................................................161
20-port 10/100/1000 TX RJ-45 MDA-a Overview.............................................................................................163
Technical Specifications..............................................................................................................................164
Power Consumption ....................................................................................................................................164
20-port 10/100/1000 TX RJ-45 MDA-a LEDs..............................................................................................164
44-port 1GigE CSFP/SFP MDA-a Overview ....................................................................................................166
Port Allocation .............................................................................................................................................167
Port Line Rate .............................................................................................................................................167
Technical Specifications..............................................................................................................................168
Power Consumption ....................................................................................................................................168
44-port 1GigE CSFP/SFP MDA-a LEDs .....................................................................................................168
Appendix C: Field-Replaceable Units............................................................................................... 171
In This Chapter .................................................................................................................................................171
Removing and Replacing a PSU ......................................................................................................................172
Warnings and Notes....................................................................................................................................172
7750 SR-a AC PSU.....................................................................................................................................173
Removing an AC PSU.................................................................................................................................173
Replacing an AC PSU .................................................................................................................................175
7750 SR-a –48 VDC PSU ...........................................................................................................................177
Removing a –48 VDC PSU .........................................................................................................................178
Replacing a –48 VDC PSU .........................................................................................................................181
Removing and Replacing a Fan Tray ...............................................................................................................185
Warnings and Notes....................................................................................................................................185
Removing a Fan Tray..................................................................................................................................186
Replacing a Fan Tray ..................................................................................................................................187
Removing and Replacing an Air Filter ..............................................................................................................189
Air Filter Routine Maintenance ....................................................................................................................189
Removing the Air Filter................................................................................................................................189
Replacing the Air Filter ................................................................................................................................190
Removing and Replacing a CPM-a ..................................................................................................................192
Warnings and Notes....................................................................................................................................192
Removing a CPM-a .....................................................................................................................................193
Replacing a CPM-a .....................................................................................................................................194
Replacing the Internal Compact Flash Card on the CPM-a ........................................................................195
Removing and Replacing an IOM-a .................................................................................................................198
Warnings and Notes....................................................................................................................................198
Shutting Down and Modifying an IOM-a Configuration ...............................................................................199
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