Port speed and duplex mode configuration
The following example sets the port speed of copper interface 8 on a FastIron device to 100 Mbps operating in full-duplex mode using the speed-duplex value command.
device(config)# interface ethernet 1/1/8 device(config-if-e1000-1/1/8)# speed-duplex 100-full
Use the no form of the command to restore the default.
NOTE
On all ICX 7xxx devices,
speed-duplex 1000-full must be configured on both of the SFP sides for the front 4x10G module to link-up the port as 1G speed.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1G Cu (fixed ports) | Y (default) | Y4 | Y | Y4 | Y | Y | Y | Y | N | N | N | N | N | N | N |
| 2.5G Cu (fixed ports)5 | N | N | N | N | Y6 7 | Y | Y | Y | Y8 | Y | Y | N | N | N | N |
| 10G Cu (fixed ports) | Y (default) | N | N | N | Y | Y | Y | Y | Y8 | Y8 | Y8 | Y8 | Y8 | Y8 | Y |
| 1G Fiber + GBIC SFP | Y (default) | N | Y | N | Y | Y | N | N | N | N | N | N | N | N | N |
| 10G Fiber + GBIC SFP | N | N | N | N | N | Y (default) | N | N | N | N | N | N | N | N | N |
| 1G Fiber + 100-fx | N | N | N | N | Y (default) | N | N | N | N | N | N | N | N | N | N |
| 1G Fiber + 1G SFP | N | N | N | N | N | Y (default) | N | N | N | N | N | N | N | N | N |
| 1G Fiber + 10G SFPP (avoid) | N | N | N | N | N | Y | 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) |
1 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.
2 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.
3 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.
4 On ICX 7150 and ICX 7250, 1G copper uplink ports do not support half duplex.
5 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.
6 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.
7 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.
8
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