Link-Mode - Juniper EX2200 Hardware Manual

Network Interfaces for EX4300 Switches

link-mode

Syntax
Hierarchy Level
Release Information
Description
Options
200
link-mode mode;
[edit interfaces interface-name],
[edit interfaces interface-name ether-options],
[edit interfaces ge-pim/0/0 switch-options switch-port port-number]
Statement introduced before Junos OS Release 7.4.
Statement introduced in Junos OS Release 9.0 for EX Series switches.
Statement introduced in Junos OS Release 12.2 for ACX Series Universal Access Routers.
Set the device's link connection characteristic.
mode—Link characteristics:
—Link mode is auto-negotiated. This is the default for EX Series switches.
automatic
The link operates at the highest possible speed, depending on the capabilities of the
remote end.
full-duplex —Connection is full duplex.
—Connection is half duplex.
half-duplex
Default: Fast Ethernet interfaces, except the J Series ePIM Fast Ethernet interfaces, can
operate in either full-duplex or half-duplex mode. The router's management Ethernet
interface, or
fxp0 em0
and the Gigabit Ethernet ports on J Series Services Routers with uPIMs installed and
configured for access switching mode autonegotiate whether to operate in full-duplex
or half-duplex mode. Unless otherwise noted here, all other interfaces operate only
in full-duplex mode.
NOTE: On J Series ePIM Fast Ethernet interfaces, if you specify half-duplex
(or if full-duplex mode is not autonegotiated), the following message is
written to the system log: "Half-duplex mode not supported on this PIC,
forcing full-duplex mode."
NOTE:
On EX4300 switches, the interfaces operate in full-duplex mode only.
On EX Series switches, if
interface-name ether-options]
half-duplex
, the built-in Fast Ethernet interfaces on the FIC (M7i router),
no-auto-negotiation
, you can select only
. If is specified, you can select any mode.
auto-negotiation
is specified in [edit interfaces
or
full-duplex
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