Cisco Nexus 3048 Switch

The Cisco Nexus 3048 switch is a 1 rack unit (RU) switch that supports 48 fixed 10/100/1000 Ethernet downlink (server-facing) ports, four fixed 10-Gigabit Ethernet uplink (network-facing) ports, two fixed 100/1000 management ports, and one console port. The switch includes one or two AC or DC power supply units and one fan tray module, both of which provide either forward or reverse airflow for cooling. The switch includes a Layer 3 license. To order the appropriate Cisco Nexus 3048 switch bundle, see Table 1-4.

Chassis for the Cisco Nexus 3048 Switch

The 1-RU Cisco Nexus 3048 chassis (part number N3K-C3048TP-1GE) is 1.72 inches (4.37 cm) high, 17.3 inches (43.9 cm) wide, and 19.7 inches (50.8 cm) deep. This switch is designed for 19-inch (48.3 cm) racks. Its switch ports are at the rear of the chassis in close proximity to server ports, and the power supplies and fan tray forward airflow or reverse airflow depending on whether the front of the switch is on a cold aisle (forward airflow) or on a hot aisle (reverse airflow). You can also order the switch with AC or DC power supplies.

Fully populated with two power supplies and a fan tray, the switch weighs 20.5 pounds (9.3 kg) and can be easily installed by one or two people.

Figure 1-3 shows the front of the Cisco Nexus 3048 chassis and identifies the components that you use to install and connect the chassis. Figure 1-4 shows the rear of the chassis and identifies the components that you use to install and connect the chassis.

Figure 1-3 Front View of the Cisco Nexus 3048 Switch

Figure 1-4 Rear View of the Cisco Nexus 3048 Switch

Ports for the Cisco Nexus 3048 Switch

The Cisco Nexus 3048 switch chassis includes the following ports:

•10/100/1000 Ethernet downlink ports (48 ports)

•1- and 10-Gigabit Ethernet uplink ports

•100/1000 Ethernet management ports (2 ports)

•Console port (1 port)

•USB port (1 port)

The chassis has 48 10/100/1000 Ethernet downlink ports that you connect to servers, which are often in the same rack or a nearby rack. You use RJ-45 connectors with copper cables to connect the switch to the servers. The ports are numbered from left to right from 1 to 48 with the odd-numbered ports on top and the even-numbered ports on the bottom.

You use up to four 1- and 10-Gigabit Ethernet uplink ports to connect the switch to one to four hosts or switches. You use an SFP or SFP+ transceiver for each of these ports.

Two 100/1000 Ethernet management ports enable you to manage switch operations. You can connect to the switch through these two ports by using an RJ-45 connector on a copper cable.

One console port enables you to initially configure the switch and to perform troubleshooting operations. You use an RJ-45 connector with a copper cable to connect to this port.

One USB port enables you to save or load switch configurations.

Power Supply for the Cisco Nexus 3048 Switch

The Cisco Nexus 3000 Series switch has two slots for power supplies that are initially installed with one or two AC or DC power supplies that have forward or reverse airflow for their cooling. The switch requires only one power supply for its operations, but you can include a second one for redundancy.

To determine which part number to use when ordering replacement power supplies, see Table 1-5.