Step 7 Replacethe terminal cover as shown. This cover should always be in place when power is applied to the
terminals.
Step 8 Connectthe other end of the power wires to aDC-power input source.
Step 9 Setthe DC disconnect switch in the circuit to ON.
Ina systemwith multiple power supplies, connect each power supplyto a separateDC power
source.In the event of a power source failure, if the second source is still available, it can maintain
systemoperation.
Caution
Step 10 Verify power supply operation by checking the power supply's front-panel LEDs. Youshould see the following:
•TheLED labeledINPUT OK isgreen.
•TheLED labeledOUTPUT FAIL is not lit.
Step 11 Check the power supply and system status from the UCS console by entering the show system command or
theshow power command, do using the GUI. For more information on these commands, refer to the command
referencefor your software.
Cabling Considerations for Fabric Port Channels
Whenyou configure the links between the Cisco UCS 2200 Series FEX and a Cisco UCS 6200 series fabric
interconnectin fabric port channel mode, the available VIF namespace on the adapter varies depending on
wherethe FEX uplinks are connected to the fabric interconnect ports.
Insidethe 6248 fabric interconnect there are six sets of eight contiguous ports, with each set of ports managed
bya single chip. When uplinks are connected such that all of the uplinks from an FEX are connected to a set
ofports managed by a single chip, Cisco UCS Manager maximizes the number of VIFs used in service profiles
deployedon the blades in the chassis. If uplink connections from an IOM are distributed across ports managed
byseparate chips, the VIF count is decreased.
Figure 27: Port Groups for Fabric Port Channels
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
26 28 30 3218 20 22 2410 12 14 162 4 6 8
1 3 5 7 9 11 13 15
10 12 14 162 4 6 8
1 2 3 4 5 6
330345
Addinga second link to a fabric port channel port group is disruptive and will automatically increase the
availableamount of VIF namespace from 63 to 118. Adding further links is not disruptive and the VIF
namespacestays at 118.
Caution
Cisco UCS 5108 Server Chassis Installation Guide
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Installation
Cabling Considerations for Fabric Port Channels