The following figure shows an invalid connection from a FEX to two separate fabric interconnects.
Figure 37: Invalid Connection for the Server Chassis and two Cisco UCS 6120XP Fabric Interconnects
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Both fabric interconnects should be wired identically: if port 1 on FEX 1 for a chassis goes to FI-A
port 5, then port 1 on FEX 2 goes to FI-B port 5.
The following figure shows valid connections from FEXes in two chassis to two separate fabric
interconnects. When you connect the server chassis to the fabric interconnect do not connect the
FEXes to the fabric interconnect's expansion modules. While similar in appearance to the other
Cisco UCS 5108 Server Chassis Installation Guide
60
Installation
Proper FEX and Fabric Interconnect Port Connectivity
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