Alcatel-Lucent 7705 Interface Configuration Manual page 90

Card, Adapter Card, and Port Command Reference
dot1q-etype
Syntax dot1q-etype 0x0600 to 0xffff
no dot1q-etype
Context config>port>ethernet
Description This command specifies the EtherType expected when the port's encapsulation type is dot1q. Dot1q
encapsulation is supported only on Ethernet interfaces.
IEEE 802.1q (also known as VLAN tagging) defines a process to channelize a single Ethernet port
into VLANs. Each VLAN can represent a customer or an application. Up to 4096 VLANs can be
configured per port.
The EtherType specifies the protocol being carried in an Ethernet frame. In 802.1q, the EtherType is
set to the Tag Protocol Identifier (TPID) value of 0x8100, which identifies the frame as an IEE
802.1Q-tagged frame. As well, 2 bytes of Tag Control Information (TCI), followed by 2 bytes
containing the frame's original EtherType are added to the frame. Together, the TPID and TCI make
up the VLAN tag.
The no form of this command reverts the dot1q-etype value to the default.
For more information on VLANs and VLAN tagging, refer to the 7705 SAR OS Services Guide.
Default 0x8100
Parameters 0x0600 to 0xffff — specifies the EtherType to expect
duplex
Syntax duplex {full | half}
Context config>port>ethernet
Description This command configures the duplex mode of an Ethernet or Fast Ethernet port when autonegotiation
is disabled.
SFP slots hosting Ethernet or Fast Ethernet SFPs can be configured to full or half duplex mode when
autonegotiation is disabled.
Duplex autonegotiation is automatically turned off when the user sets the mode with this command.
SFP slots hosting GigE SFPs only support full duplex mode. Duplex autonegotiation is not supported,
and the mode is always full duplex.
Default full
Page 90 7705 SAR OS Interface Configuration Guide