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- Description
- Specifications
IBM feature #EB47 is a 25 Gb SFP28 optical transceiver for IBM Power Systems servers, a 25GBASE-SR shortwave part. In the PCIe3 2-port 25/10 Gb NIC & RoCE SFP28 adapter (FC EC2T and EC2U, CCIN 58FB), it is qualified for the adapter's two SFP28 ports, and either one or both ports can be populated.
At 25 Gb/s the transceiver runs up to 100 m through OM4 multimode cable and up to 70 m through OM3 cable; OM2 cable is supported from 0.5 m to 20 m. Cabling for the link is multimode 50/125 micron fiber with shortwave lasers, with 2000 MHz x km bandwidth for OM3 and OM4. The far end uses a SFP28 optical transceiver of its own.
In the PCIe4 x16 4-port 25/10/1 GbE RoCE SFP28 adapter (FC EAPC and EAPD) and in the FC EN24 and EN26 adapters, RS-FEC error correction is the only supported setting for #EB47 and any other 25GBASE-SR optical transceiver; other error correction types, or none, are not supported there. The 10 Gb SFP+ transceiver EB46 and the 1 Gb RJ45 transceiver EB48 are the sibling options for the same adapter family.
| Feature code | #EB47 |
| Description | 25GbE Optical Transceiver SFP28 |
| Standard | 25GBASE-SR |
| Form factor | SFP28 |
| Speed | 25 Gb/s |
| Reach | up to 100 m on OM4 or 70 m on OM3 multimode fiber; 0.5 m to 20 m on OM2 |
| Ports per adapter | one or both of the two SFP28 ports (FC EC2T and EC2U) |
| Error correction | RS-FEC only on FC EAPC, EAPD, EN24 and EN26 adapters |
| Host | IBM Power Systems |