Link problem determination using MAPs
Begin at 0310: Testing a link to perform step-by-step problem determination or verification of a link segment or component. Before you begin, see Common link failures for additional information.
| Link/Fiber type | Maximum loss | Maximum length | Trunk size |
|---|---|---|---|
| ESCON | |||
| Multi-mode | 7.0 dB (Note 1) | 2.0 km (1.24 miles) | 62.5 μm (500 MHz•km) |
| Multi-mode | 6.5 dB (Note 1) | 2.0 km (1.24 miles) | 50.0 μm |
| Multi-mode | 7.0 dB (Note 1) | 3.0 km (1.86 miles) | 62.5 μm (800 MHz•km) |
| Single-mode (discontinued) | 14.0 dB | 20 km (12.4 miles) | 9 to 10 μm |
| Coupling Links | |||
| Single-mode 1.06 Gbps or 2.1 Gbps | 7.0 dB | 10 km (6.2 miles) | 9 to 10 μm |
| Single-mode card with 50 micron optical mode conditioner over multi-mode fiber | 5.0 dB | 550 meters (0.34 miles) | 50.0 μm |
| FDDI | |||
| Multi-mode (discontinued) | 9.0 dB | 2.0 km (1.24 miles) | 62.5 μm |
| ATM | |||
| Multi-mode (discontinued) | 11.0 dB | 2.0 km (1.24 miles) | 62.5 μm |
| Single-model (discontinued) | 15.0 dB | 20.0 km (12.4 miles) | 9 to 10 μm |
| FICON® | |||
| Multi-mode with 50 micron optical mode conditioner on an LX link | 5.0 dB | 550 meters (0.34 miles) | 50.0 μm (Note 3) |
| Multi-mode with 62.5 micron optical mode conditioner on an LX link | 5.0 dB | 550 meters (0.34 miles) | 62.5 μm (Note 3) |
| Single-mode LX 1gbps (100-SM-LC-L) | 7.8 dB | 10 km (6.2 miles) | 9 to 10 μm |
| Single-mode LX 2gbps (200-SM-LC-L) | 7.8 dB | 10 km (6.2 miles) | 9 to 10 μm |
| Single-mode LX 4gbps 10km (400-SM-LC-L) | 7.8 dB | 10 km (6.2 miles) | 9 to 10 μm |
| Single-mode LX 4gbps 4km (400-SM-LC-M) | 4.8 dB | 4 km (2.5 miles) | 9 to 10 μm |
| Single-mode LX 8gbps 10km (800-SM-LC-L) | 6.4 dB | 10 km (6.2 miles) | 9 to 10 μm |
| Single-mode LX 16gbps 10km (1600-SM-LC-L) | 6.4 dB | 10 km (6.2 miles) | 9 to 10 μm |
| Single-mode LX 32gbps 10km (3200-SM-LC-L) | 6.34 dB | 10 km (6.2 miles) | 9 to 10 μm |
| Multi-mode SX 1gbps (100-M6-SN-I) | 2.76 dB | 250 meters (0.155miles) | 62.5 μm (160 MHz•km) |
| Multi-mode SX 2gbps (200-M6-SN-I) | 1.98 dB | 120 meters (0.075 miles) | 62.5 μm (160 MHz•km) |
| Multi-mode SX 4gbps (400-M6-SN-I) | 1.72 dB | 55 meters (0.034 miles) | 62.5 μm (160 MHz•km) |
| Multi-mode SX 1gbps (100-M6-SN-I) | 3.00 dB | 300 meters (0.186 miles) | 62.5 μm (200 MHz•km) |
| Multi-mode SX 2gbps (200-M6-SN-I) | 2.10 dB | 150 meters (0.093 miles) | 62.5 μm (200 MHz•km) |
| Multi-mode SX 4gbps (400-M6-SN-I) | 1.78 dB | 70 meters (0.043 miles) | 62.5 μm (200 MHz•km) |
| Multi-mode SX 8gbps (800-M6-SN-I) | 1.58 dB | 21 meters (0.013 miles) | 62.5 μm (200 MHz•km) |
| Multi-mode SX 16gbps (1600-M6-SN-S) | 1.56 dB | 15 meters (0.009 miles) | 62.5 μm (200 MHz•km) |
| Multi-mode SX 1gbps (100-M5-SN-I) | 3.85 dB | 500 meters (0.311 miles) | 50 μm (500 MHz•km) |
| Multi-mode SX 2gbps (200-M5-SN-I) | 2.62 dB | 300 meters (0.186 miles) | 50 μm (500 MHz•km) |
| Multi-mode SX 4gbps (400-M5-SN-I) | 2.06 dB | 150 meters (0.093 miles) | 50 μm (500 MHz•km) |
| Multi-mode SX 8gbps (800-M5-SN-I) | 1.68 dB | 50 meters (0.031 miles) | 50 μm (500 MHz•km) |
| Multi-mode SX 16gbps (1600-M5-SN-S) | 1.63 dB | 35 meters (0.021 miles) | 50 μm (500 MHz•km) |
| Multi-mode SX 32gbps (3200-M5-SN-S) | 1.57 dB | 20 meters (0.012 miles) | 50 μm (500 MHz•km) |
| Multi-mode SX 1gbps (100-M5-SN-I) | 4.62 dB | 860 meters (0.534 miles) | 50 μm (2000 MHz•km) |
| Multi-mode SX 2gbps (200-M5-SN-I) | 3.31 dB | 500 meters (0.311 miles) | 50 μm (2000 MHz•km) |
| Multi-mode SX 4gbps (400-M5-SN-I) | 2.88 dB | 380 meters (0.236 miles) | 50 μm (2000 MHz•km) |
| Multi-mode SX 8gbps (800-M5-SN-I) | 2.04 dB | 150 meters (0.093 miles) | 50 μm (2000 MHz•km) |
| Multi-mode SX 16gbps (1600-M5E-SN-S) | 1.86 dB | 100 meters (0.062 miles) | 50 μm (2000 MHz•km) |
| Multi-mode SX 32gbps (3200-M5E-SN-S) | 1.75 dB | 70 meters (0.043 miles) | 50 μm (2000 MHz•km) |
| Multi-mode SX 4gbps (400-M5F-SN-S) | 2.95 dB | 400 meters (0.248 miles) | 50 μm (4700 MHz•km) |
| Multi-mode SX 8gbps (800-M5F-SN-S) | 2.19 dB | 190 meters (0.118 miles) | 50 μm (4700 MHz•km) |
| Multi-mode SX 16gbps (1600-M5F-SN-S) | 1.95 dB | 125 meters (0.077 miles) | 50 μm (4700 MHz•km) |
| Multi-mode SX 32gbps (3200-M5F-SN-S) | 1.86 dB | 100 meters (0.062 miles) | 50 μm (4700 MHz•km) |
| Gigabit Ethernet (GbE) LX | |||
| Multi-mode with 50 micron optical mode conditioner | 2.4 dB | 550 meters (0.340 miles) | 50 μm |
| Multi-mode with 62.5 micron optical mode conditioner | 2.4 dB | 550 meters (0.340 miles) | 62.5 μm |
| Single-mode | 4.6 dB | 5 km (3.1 miles) | 9 to 10 μm |
| Gigabit Ethernet (GbE) SX | |||
| Multi-mode 50 micron | 3.6 dB | 550 meters (0.34 miles) | 50 μm |
| Multi-mode 62.5 micron | 2.6 dB | 275 meters (0.17 miles) | 62.5 μm |
| 10 Gigabit Ethernet (10GbE) LR | |||
| 10 Gigabit Ethernet (10GbE) Single-mode | 6.0dB | 10 km (6.2 miles) | 9 to 10 μm |
| 25 Gigabit Ethernet (25GbE) LR | |||
| 25 Gigabit Ethernet (25GbE) Single-mode | 6.3dB | 10 km (6.2 miles) | 9 to 10 μm |
| RoCE (10GbE) SR | |||
| Multi-mode 50 micron (OM4) | 2.9 dB | 400 meters (0.248 miles) | 50 μm |
| Multi-mode 50 micron (OM3) | 2.6 dB | 300 meters (0.19 miles) | 50 μm |
| Multi-mode 50 micron (OM2) | 1.8 dB | 82 meters (0.05 miles) | 50 μm |
| Multi-mode 62.5 micron (OM1) | 1.6 dB | 33 meters (0.02 miles) | 62.5 μm |
| RoCE (25GbE) SR | |||
| Multi-mode 50 micron (OM4) | 1.9 dB | 100 meters (0.062 miles) | 50 μm |
| Multi-mode 50 micron (OM3) | 1.8 dB | 70 meters (0.043 miles) | 50 μm |
| Parallel Sysplex® using InfiniBand | |||
| 1x IFB | 5.66 dB | 10 km (6.2 miles) | 9 to 10 μm |
| 12x IFB | 2.06 dB | 150 meters (0.93 miles) | 50 μm |
| Integrated Coupling Adapter (ICA) and zHyperLink Express | |||
| 24x PCIe (OM3) | 1.9 dB | 100 meters (0.062 miles) | 50 μm (2000 MHz•km) |
| 24x PCIe (OM4) | 1.5 dB | 150 meters (0.093 miles) | 50 μm (4700 MHz•km) |
Notes:
- This value does not include the higher-order-mode loss because the MAPs use the OMC tool for multi-mode link measurements.
- Multi-mode coupling links operate at wavelengths of 770 - 850 nm; their maximum distance is 1 km (0.62 miles) using 50 micron fiber, with a maximum allowable loss of 3 dB/km measured at 850 nm.
- The use of MCP cables is not supported over 1 gb.
| Fiber type | Cable length in meters (ft.) | Maximum loss |
|---|---|---|
| ESCON, ATM, FICON LX, FDDI, GbE LX | ||
| Multi-mode | 4 to 85 (12 to 279) | 1.0 dB at 1300 nm |
| Multi-mode | 86 to 143 (280 to 469) | 1.1 dB at 1300 nm |
| Multi-mode | 144 to 200 (470 to 656) | 1.2 dB at 1300 nm |
| Multi-mode | 201 to 257 (657 to 843) | 1.3 dB at 1300 nm |
| Multi-mode | 258 to 314 (844 to 1030) | 1.4 dB at 1300 nm |
| Multi-mode | 315 to 371 (1031 to 1217) | 1.5 dB at 1300 nm |
| Multi-mode | 372 to 428 (1218 to 1404) | 1.6 dB at 1300 nm |
| Multi-mode | 429 to 485 (1405 to 1591) | 1.7 dB at 1300 nm |
| Multi-mode | 486 to 500 (1592 to 1640) | 1.75 dB at 1300 nm |
| Coupling link, FICON SX, GbE SX | ||
| Multi-mode | 4 to 50 (12 to 164) | 1.0 dB at 850 nm |
| Multi-mode | 51 to 117 (165 to 384) | 1.2 dB at 850 nm |
| Multi-mode | 118 to 183 (385 to 600) | 1.4 dB at 850 nm |
| Multi-mode | 184 to 250 (601 to 820) | 1.6 dB at 850 nm |
| Multi-mode | 251 to 317 (821 to 1040) | 1.8 dB at 850 nm |
| Multi-mode | 318 to 383 (1041 to 1257) | 2.0 dB at 850 nm |
| Multi-mode | 384 to 450 (1258 to 1476) | 2.2 dB at 850 nm |
| Multi-mode | 451 to 500 (1476 to 1640) | 2.35 dB at 850 nm |
| ESCON, coupling link, ATM, FICON, GbE | ||
| Single-mode | 4 to 300 (12 to 984) | 1.0 dB at 1300 nm |
| Single-mode | 301 to 500 (985 to 1640) | 1.1 dB at 1300 nm |
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Note: Use supplier attenuation values if jumpers are not supplied by IBM®.
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