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Ixiasoft
Visible to Intel only — GUID: xks1529525835158
Ixiasoft
5.1.3. Supported RS-FEC Modes in E-Tile Devices
Client Type | FEC Code | Number of Physical Lanes | Marker Size (bits) | Synchronization Type |
---|---|---|---|---|
100GbE | RS528 | 4 | 1285 | AM |
100GbE with KP-FEC | RS544 | 2 | 1285 | AM |
128GFC | RS528 | 4 | 514 | AM |
25GbE | RS528 | 1 | 257 | CWM |
32GFC | RS528 | 1 | — | SnT |
Legend:
- RS528 = RS(528, 514)
- RS544 = RS(544, 514)
- AM = Alignment Markers
- CWM = Codeword Marker
- SnT = Scramble-and-Test
The RS-FEC core supports the following standards:
- 100GbE: IEEE 802.3 Clause 91
- 100GbE with KP-FEC: IEEE 802.3 Clause 91
- 128GFC: Fibre Channel Framing and Signaling - 4 (FC-FCS-4) Clause 5.6
- 25GbE: IEEE 802.3 Clause 108
- 32GFC: Fibre Channel Framing and Signaling - 4 (FC-FCS-4) Clause 5.4
100GbE with KP-FEC uses two physical PAM4 coded lanes, also called, 100 Gigabit Attachment Unit Interface (CAUI-2). It uses the RS(544,514). The two physical lanes are supported by bit-multiplexing the RS-FEC Core’s four PMA lanes pairwise outside of the RS-FEC Core. The remaining defined clients use the RS(528,514) FEC.
In the CPRI standard, the CPRI FEC refers to 32GFC. CPRI is like 32GFC except for the line rate, which is 24 Gbps.