Connectivity Guide

S4148U-ON unied port modes—SFP+ ports 1-24 and QSFP28 ports 25-26 and 29-30:
• 10GE is an SFP+ port in Ethernet mode or a 4x10G breakout of a QSFP+ or QSFP28 port in Ethernet mode.
• 25GE is a 4x25G breakout of a QSFP28 Ethernet port.
• 40GE is a QSFP+ or QSFP28 Ethernet port that uses QSFP+ 40GE transceivers.
• 50GE is a 2x50G breakout of a QSFP28 Ethernet port.
• 100GE is a QSFP28 Ethernet port.
• 4x8GFC are breakout interfaces in an SFP+ or QSFP28 FC port group.
• 2x16GFC are breakout interfaces (subports 1 and 3) in an SFP+ or QSFP28 FC port group.
• 4x16GFC are breakout interfaces in a QSFP28 FC port group.
• 1x32GFC (subport 1) are breakout interfaces in a QSFP28 FC port group.
S4148U-ON Ethernet modes—QSFP+ ports 27-28 and SFP+ ports 31-54:
• 10GE mode is an SFP+ 10GE port or a 4x10G breakout of a QSFP+ port.
• 40GE mode is a QSFP+ port.
For example, all S4148U-ON activate support 10G speed on unied ports 1-24 and Ethernet ports 31-54, but only profile-1 and
profile-2 activate QSFP+ ports 27-28 in 40GE mode with 4x10G breakouts. Similarly, all S4148U-ON proles activate 8GFC speed on
unied ports 1-24, but only profile-1, profile-2, and profile-3 activate 2x16GFC in port groups 1-6. In QSFP28 port groups,
profile-1 and profile-2 support 1x32GFC; profile-3 and profile-4 support 4x16GFC.
*profile-1 and profile-2 activate the same port mode capability on unied and Ethernet ports. The dierence is that in
profile-1, by default SFP+ unied ports 1-24 come up in Fibre Channel mode with 2x16GFC breakouts per port group. In profile-2,
by default SFP+ unied ports 1-24 come up in Ethernet 10GE mode.
profile-1 allows you to connect FC devices for plug-and-play;
profile-2 is designed for a standard Ethernet-based data network.
**Oversubscription: Congure oversubscription to support bursty storage trac on a Fibre Channel interface. Oversubscription allows a
port to operate faster, but may result in trac loss. To support oversubscription, use the speed command in Interface Conguration mode.
This command is not supported on an Ethernet interface. In S4148U-ON port proles:
• SFP+ and QSFP28 port groups in 4x8GFC mode support 16GFC oversubscription on member interfaces.
• QSFP28 ports in 2x16GFC mode support 32GFC oversubscription. SFP+ port groups in 2x16GFC mode do not support 32GFC
oversubscription. 2x16GFC mode activates subports 1 and 3.
• QSFP28 ports in 4x16GFC mode support 32GFC oversubscription.
Breakout interfaces:
162
Interfaces