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auto-negotiation

See the following sections:

auto-negotiation (Gigabit Ethernet)

Syntax

(auto-negotiation | no-auto-negotiation) remote-fault <local-interface-online | local-interface-offline>;

Hierarchy Level

[edit interfaces interface-name gigether-options]

Release Information

Statement introduced in JUNOS Release 7.6.

Description

For Gigabit Ethernet interfaces only, explicitly enable autonegotiation and remote fault. In this mode, you can manually configure remote fault options. Include the no-auto-negotiation statement to disable autonegotiation. When you configure the Tri-Rate Ethernet copper interface to operate at 1 Gbps, autonegotiation must be enabled.

Default

Autonegotiation is automatically enabled. No explicit action is taken after the autonegotiation is complete or if the negotiation fails.

Options

no-auto-negotiation—Disables explicit autonegotiation.

remote-fault local-interface-online | local-interface-offline—(Optional) Manually configure remote fault on an interface. Specify remote fault as online or offline.

Default: online

Usage Guidelines

See Configuring Gigabit Ethernet Autonegotiation.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

auto-negotiation (J-series uPIM)

Syntax

(auto-negotiation | no-auto-negotiation);

Hierarchy Level

[edit interfaces ge-pim/0/0 switch-options switch-port port-number]

Release Information

Statement introduced in JUNOS Release 8.4.

Description

For universal Physical Interface Modules (uPIMs) on J-series Services Routers only, explicitly enable autonegotiation. If the link speed and duplex are also configured, the interfaces use the values configured as the desired values in the negotiation. Include the no-auto-negotiation statement to disable autonegotiation.

If autonegotiation is disabled, the link speed and link mode must be configured.

Default

Autonegotiation is enabled by default.

Options

auto-negotiation—Enables autonegotiation.

no-auto-negotiation—Disables autonegotiation.

Usage Guidelines

See Configuring J-series Services Router Switching Interfaces.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

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