IBM manual On the B24X, On the device to be connected, Connectivity to IBM System servers

Table 5 lists the methods that the B24X can use to connect to another device.

Table 5. Connectivity options

On the B24X	On the device to be connected
SFP+ port using 10 GbE SFP+ optical	The optic on the device being connected can be
transceiver: 69Y0389: 10GBASE-SR	another form-factor (that is, XFP transceiver, X2
	module, or integrated into NIC), but must have a
This optical transceiver receives a	matching optical transmission type.
duplex LC connector.
	For example, a 10GBASE-SR XFP optical
	transceiver on the device being connected must
	match a 10GBASE-SR SFP+ optical transceiver on
	the B24X within the proper wavelength and power
	specifications.
	Multi-mode or single-mode fiber as specified
	required for connectivity. See the "Network cabling
	requirements" section.
SFP+ port using 10 GbE Direct Attach	It is up to the user to decide whether the interface
SFP+ Active TwinAx cable:	on the device being connected supports the IBM
z 45W2398 or 45W2401: 1 meter	DAC used with the B24X.
z 45W2408 or 45W2409: 3 meter
z 45W3039 or 45W3042: 5 meter	Below is a list of IBM server adapters that have
	been tested for compatibility with the part numbers
Direct Attach Cables (DACs) are	in the left-hand column. If a product is not listed,
copper cables with two SFP+	that does not necessarily mean that it is
transceivers attached to either end of	incompatible--it simply has not been tested.
the cable.
	IBM server adapters:
	z 42C1820: Brocade 10Gb Converged Network
	Adapter for IBM System x
	z 49Y4250: Emulex 10Gb Virtual Fabric Adapter
	for IBM System x
	z 42C1800: QLogic 10 Gb CNA for IBM System x
10/100/1000 MbE RJ-45 port:	Connect to any RJ-45 port or TX adapter
Auto-sensing, auto-negotiating,	supporting 10, 100, or 1000 Mbps Ethernet over
auto-MDI/MDIX.	CAT5 or higher cabling up to 100 meters.

Connectivity to IBM System servers

The B24X can be deployed as a Top of Rack access switch to provide connectivity to servers within a rack. This includes servers from IBM System x, System p, and System i.

IBM System x servers typically come with on-board 1 Gbps Ethernet RJ-45 ports. Additional 1 GbE NICs can be installed to increase connectivity. These NICs might have RJ-45 ports, SFP ports requiring a transceiver, or integrated optical transceivers. Follow the guidelines in Table 5 for connectivity.

IBM Ethernet Switch B24X 10