ZyXEL Communications IES-2000, User Manual

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IES-2000/3000 User’s Guide
10/100M Fast Ethernet Port Commands 9-1
Chapter 9
10/100M Fast Ethernet Port Commands
The Ethernet subsystem allows you to configure and monitor the 10/100M fast Ethernet port.
9.1 10/100M Auto-Sensing Ethernet
The ALC1024 and SLC1024 support connections to a 10/100Mbps auto-sensing Ethernet. There are two key
factors in connecting to a peer’s Ethernet port: speed and duplex mode. In a 10/100Mbps fast Ethernet, the speed
can be 10Mbps or 100Mbps and the duplex mode can be half or full. Auto-negotiation allows one Ethernet port to
negotiate with a peer automatically to obtain the optimal connection speed and duplex mode.
When auto-negotiation is turned on, the ALC1024 and SLC1024 negotiate with the peer’s Ethernet port
automatically to determine the optimal connection speed and duplex mode. If the peer’s Ethernet port does not
support auto-negotiation or turns off this feature, the line card determines the connection speed by detecting the
signal on the cable and using half-duplex mode. When the ALC1024 or SLC1024’s auto-negotiation is turned off,
the Ethernet uplink port uses the pre-configured speed and duplex mode settings when making a connection, thus
requiring you to check the settings of the peer’s Ethernet port in order to connect.
9.2 Ethernet Commands
9.2.1 Set Auto Command
Syntax:
192.168.1.1 ethernet> set auto <ON/OFF>
where
<ON/OFF> = on or off
This command sets the auto-negotiation of the Ethernet uplink port either on or off.
9.2.2 Set Duplex Command
Syntax:
192.168.1.1 ethernet> set duplex <mode>
where
<mode> = full or half
This command sets the duplex mode used when auto-negotiation is turned off.