PLANET WGSW-50040 - Manual (Page 105)

duplex mode, the speed and duplex mode must be the same as the setting of the remote end, i.e., if
the remote device is set to auto-negotiation, then auto-negotiation should be set at the local port. If
the remote end is in forced mode, the same should be set in the local end.
1000Gb ports are by default master when configuring nonegotiate mode. If one end is set to
master mode, the other end must be set to slave mode.
force1g-half is not supported yet.
Example:
Port 1 of SwitchA is connected to port 1 of SwitchB, the following will set both ports in forced
100Mbps at half-duplex mode.
SwitchA(config)#interface ethernet1/1
SwitchA(Config-If-Ethernet1/1)#speed-duplex force100-half
SwitchB(config)#interface ethernet1/1
SwitchB(Config-If-Ethernet1/1)#speed-duplex force100-half