Cisco Systems N3KC3524P10G manual Port Connections for the Cisco Nexus 3548 Switch

Chapter 1 Overview of the Cisco Nexus 3000 Series Switches

Cisco Nexus 3548 Switch

Se n d d o c u m e n t c o m m e n t s t o n ex u s 3 k - d o c f e e d b a ck @ c i sc o . c o m

Both forward (port-side exhaust) and reversed (port-side intake) airflow schemes are supported. The port-side exhaust scheme is used when the cold air flows in through the side having the fans (facing the cold aisle) and exhausts out of the side having the ports (facing the hot aisle). Port-side intake scheme is used when the air flows in through the ports (facing the cold aisle) and leaves through the side having the fans (facing the hot aisle). Figure 1-9shows the Cisco Nexus 3548 with blue handles indicating forward airflow

Figure 1-9Cisco Nexus 3548 with blue handles indicating forward airflow

Figure 1-10shows the Cisco Nexus 3548 with red handles indicating reversed airflow

Figure 1-10Cisco Nexus 3548 with red handles indicating reversed airflow

Caution You can order a replacement fan tray with forward airflow or reverse airflow. Be sure to order the same direction of airflow that is used with the switch.

Caution The switch must run with all of its power supply and fan tray modules taking in air from a cold aisle and exhausting air to the hot aisle. If they take in air from a hot aisle, an overtemperature condition can occur and the switch will shut down. If the airflow directions are mixed in the same switch, you will see an error.

Port Connections for the Cisco Nexus 3548 Switch

The Cisco Nexus 3548 supports a wide variety of 1 and 10 Gigabit Ethernet connectivity options. For in-rack or adjacent-rack cabling, the Cisco Nexus 3548 supports SFP+ direct-attach 10 Gigabit Ethernet copper, an innovative solution that integrates transceivers with Twinax cables into an energy-efficient and low-cost solution. For longer cable runs, multimode and single-mode optical SFP+ transceivers are supported.

Table 1-14describes the 10 Gigabit Ethernet transceivers you can use.

	Cisco Nexus 3000 Series Hardware Installation Guide
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