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| Link Modes (for advertise and speed properties) | Description | Supported FEC modes |
|---|---|---|
10M-baseT-half | 10M twisted-pair half-duplex | |
| 10M-baseT-full | 10M twisted-pair full-duplex | |
| 100M-baseT-half | 100M twisted-pair half-duplex | |
| 100M-baseT-full | 100M twisted-pair full-duplex | |
| 1G-baseT-half | 1G twisted-pair half-duplex | |
| 1G-baseT-full | 1G twisted-pair full-duplex | |
| 1G-baseX | 1G optical-fiber | |
| 2.5G-baseT | 2.5G twisted-pair full-duplex | |
| 2.5G-baseX | 2.5G optical-fiber | |
| 5G-baseT | 5G twisted-pair full-duplex | |
| 10G-baseT | 10G twisted-pair full-duplex | |
| 10G-baseCR | 10G twinaxial-copper | |
| 10G-baseSR-LR | 10G optical-fiber | |
| 25G-baseCR | 25G twinaxial-copper | fec74, fec91* |
| 25G-baseSR-LR | 25G optical-fiber | fec74, fec91* |
| 40G-baseCR4 | 4x10G twinaxial-copper | fec74 |
| 40G-baseSR4-LR4 | 4x10G optical-fiber | fec74 |
| 50G-baseCR2 | 2x25G twinaxial-copper | fec74, fec91 |
| 50G-baseSR2-LR2 | 2x25G optical-fiber | fec74, fec91 |
| 100G-baseCR4 | 4x25G twinaxial-copper | fec91 |
| 100G-baseSR4-LR4 | 4x25G optical-fiber | fec91 |
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| Info | ||
|---|---|---|
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The first number followed by M or G (e.g. 10M, 100M, 1G) represent the data transmission rates. The symbols after "base" indicate the interface types. The T stands for twisted pair followed by duplex mode (either half or full). The SR-LR is shorthand for "short-range" and "long-range" optical modules, it also includes all other variants like LRM, ER, ZR, etc. These link modes should be used with optical modules. The CR stands for twinaxial copper and should be used with direct attach cable (DAC). For 1Gbps DAC the 1G-baseT-full link mode is appropriate. The last digit represent the number of lines, with "CR2" meaning two lines and "CR4" indicating four lines. The CCR2004-1G-2XS-PCIe device does not support fec91 on SFP28 interfaces. |
Each interface expose all the supported link mode capabilities. They can be monitored by the "/interface ethernet monitor" command:
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