Auto-negotiation
Port speed matrix
| auto1 | 10-half | 10-full2 | 100-half | 100-full | 1000-full | 1000-full-master3 | 1000-full-slave3 | 2500-full | 2500-full-master3 | 2500-full-slave3 | 5G-full | 5G-full-master | 5G-full-slave | 10G-full | 10G-full-master | 10G-full-slave | 25G-full4 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1G Cu (fixed ports) | Y (default) | Y5 | Y | Y5 | Y | Y | Y | Y | N | N | N | N | N | N | N | N | N | N |
| 2.5G Cu (fixed ports)6 | Y | N | N | N | Y789 | Y | Y | Y | Y10 | Y | Y | N | N | N | N | N | N | N |
| 10G Cu (fixed ports) | Y (default) | N | N | N | Y | Y | Y | Y | Y10 | Y 10 | Y10 | Y10 | Y10 | Y10 | Y | Y | Y | N |
| 1G Fiber + GBIC SFP | Y (default) | N | Y | N | Y | Y | N | N | N | N | N | N | N | N | N | N | N | N |
| 10G Fiber + GBIC SFPP | N | N | N | N | N | N | N | N | N | N | N | N | N | N | Y(default) | N | N | N |
| 1G Fiber + 100-fx | N | N | N | N | Y (default) | N | N | N | N | N | N | N | N | N | N | N | N | N |
| 1G Fiber + 1G SFP | Y | N | N | N | N | Y (default) | N | N | N | N | N | N | N | N | N | N | N | N |
| 1G Fiber + 10G SFPP (avoid) | N | N | N | N | N | N11 | N | N | N | N | N | N | N | N | N | N | N | N |
| 10G Fiber + 1G SFP | Y | N | N | N | N | Y (default) | N | N | N | N | N | N | N | N | N | N | N | N |
| 10G Fiber + SFPP | N | N | N | N | N | N | N | N | N | N | N | N | N | N | Y (default) | N | N | N |
| 25G Fiber + 1G SFP | Y12 | N | N | N | N | Y | N | N | N | N | N | N | N | N | N | N | N | N |
| 25G Fiber + GBIC, SFP | N | N | N | N | N | Y | N | N | N | N | N | N | N | N | N | N | N | N (default) |
| 25G Fiber + SFPP | N | N | N | N | N | N | N | N | N | N | N | N | N | N | Y | N | N | N (default) |
| 25G Fiber + SFP28 | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | Y (default) |
| 40G Fiber | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| 100G Fiber | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
- If a port is configured with speed auto and the peer port is configured for (non autoneg) full-duplex, "duplex mismatch" occurs resulting in the local port selecting half-duplex mode. In this case, packet collisions and receive errors will occur. In the case of ICX 7250, in the event of a duplex mismatch, the local port will force to full duplex instead of half duplex. ↩
- In the case of speed mismatch i.e. connecting ports are set to different forced mode speeds like (100-full and 10-full) or (100-half and 10-half), the ports might not come up. This configuration is invalid. ↩
- In the case of specific master/slave selection, if the local port is selected as master, the peer port should either be set to slave (and vice-versa) or auto. ↩
- 25G ports are supported on ICX7850-48F. These ports can be configured at 25G speed only in groups of 4 ports or sets of groups of 4 ports e.g. 1/1/1-1/1/4, 1/1/1-1/1/8. ↩
- On ICX
7150 and ICX 7250, 1G copper uplink ports do not support half
duplex.
ICX 7550-24ZP and ICX 7550-48ZP 1G copper ports does not support 100M half-duplex.
↩ - In ICX 7450-32ZP, 2.5G ports can be configured only in pairs or set of pairs e.g. (1/1/25 -1/1/26) (1/1/27 -1/1/28) (1/1/25-1/1/32) etc. ↩
- ICX MultiGig ports can connect to other ICX MultiGig ports at 100 Mbps when "speed-duplex 100-full" is configured on both sides. MultiGig ports are copper ports that support 2.5G and or 5G speeds. ↩
- ICX MultiGig ports can connect to 1G copper ports on ICX switches at 100 Mbps when "speed-duplex 100-full" is configured on both sides and the 1G copper ports have EEE enabled. ↩
- ICX 7150-C08 doesn't support EEE feature, hence 100 Mbps speed configuration is not supported on this device when it is connected to MultiGig ports. ↩
On ICX 7450-32ZP, default speed is 2500-full on MultiGig ports. Support NBaseT.
On ICX 7150-48ZP, default speed is auto on MultiGig ports and they advertise 100/1000/2500Mbps speeds by default. Support 802.3bz and NBase-T
On ICX 7650-48ZP, default speed is auto on MultiGig ports and they advertize 100Mbps/1G/2.5G/5G/10G speeds by default. Support 802.3bz and NBaseT.ICX 7650-24ZP has 6 full Multigig ports and 18 ports of speed 100/1000/2500Mbps supporting 802.3bz and NBase-T.
ICX 7650-48ZP has 12 full Multigig ports and 36 ports of speed 100/1000/2500Mbps supporting 802.3bz and NBase-T.
↩- To be supported, use 10Gb optics at 10Gb and 1Gb optics at 1Gb. ↩
- 25G ports in ICX
7850-48F requires the remote end to disable the auto-neg using the
command
gig-default, which is applicable only for fiber ports with 1G optic. ↩