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.
Table 16 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
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