For 100G, IBM
®
offers either Direct Attach Copper (DAC) cables up to 2 M or Active Optical
Cables (AOC) up to 100 M. QSFP28 based transceivers are included on each end of these cables.
For more information about adapter cabling, see the “Cable and Transceiver Matrix.”
Note: For 40G, IBM
®
offers DAC cables up to 5 M. QSFP+ base transceivers are included on each
end of these cables. See FC EB2B, EB2H, and ECBN for a 1 M, 3 M, and 5 M copper cables.
Transceivers
IBM qualifies and supports QSFP28 optical transceiver (FC EB59) to install into the adapter.
Customers can also use their own optical cabling and QSP28 optical transceiver for the other end.
This is a 100Gbase-SR4 based active optical transceiver capable up to 100 M through the OM4
cable or 70 M through OM3 cable. Either one or both of the adapter's two QSP28 ports can be
populated. When two ports are filled, both can have copper cables or optical cables. Additionally,
one of the cables can be copper and the other can be optical. IBM
®
also offers QSFP+ optical
transceiver (FC EB27) to install into the adapter and allowing the customer to use their own
optical cabling and QSP28 optical transceiver for the other end.
Cable and Transceiver Matrix
Feature code Description
EB59 100Gbase-SR4 Optical Transceiver MTP/MPO cable
(purchased separately)
v FC EB2J - 10 M
v FC EB2K - 30 M
EB5J QSFP28 Passive Copper 100 Gb Ethernet Cable - .5 M
EB5K QSFP28 Passive Copper 100 Gb Ethernet Cable - 1 M
EB5L QSFP28 Passive Copper 100 Gb Ethernet Cable - 1.5 M
EB5M QSFP28 Passive Copper 100 Gb Ethernet Cable - 2 M
EB5R QSFP28 AOC 100 Gb Ethernet Cable - 3 M
EB5S QSFP28 AOC 100 Gb Ethernet Cable - 5 M
EB5T QSFP28 AOC 100 Gb Ethernet Cable - 10 M
EB5U QSFP28 AOC 100 Gb Ethernet Cable - 15 M
EB5V QSFP28 AOC 100 Gb Ethernet Cable - 20 M
EB5W QSFP28 AOC 100 Gb Ethernet Cable - 30 M
EB5X QSFP28 AOC 100 Gb Ethernet Cable - 50 M
EB5Y QSFP28 AOC 100 Gb Ethernet Cable - 100 M
EB2B 1 M Passive QSFP+ to QSFP+
EB2H 3 M Passive QSFP+ to QSFP+
ECBN 5 M Passive QSFP+ to QSFP+
EB27 QSFP+ 40G BASE-SR transceiver
Attributes provided
The adapter is based on the Mellanox ConnectX-4 adapter, which uses the ConnectX-4 EN
Network Controller
Ethernet only supported in Ethernet or RoCE mode
PCIe3 compliant (1.1 and 2.0 compatible)
RDMA over Converged Ethernet (RoCE)
NIC and RoCE are concurrently supported
RoCE supported on Linux and AIX (7.2, and later)
Managing PCIe adapters 61
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