Setting Up Ports

• Green: The port is up and running.
• Blue: Indicates that a signal is detected, but that the protection mode for the parent LAG port is "Link-status" and the port is not the working connector.
• Red: The port is enabled, but the physical link is down and no signal is detected.
• Yellow: The port is not totally functional.
• Gray: The port is disabled.

• SFP
• RJ45
• Management

By default, Skylight element: LX-S ports are named as follows: PORT-5, PORT-6, PORT-7, PORT-8, Management, LAG-3 andLAG-4 .

Auto-negotiation: The unit automatically negotiates port speed and duplex type with the device to which it is connected. For autonegotiation to be successful, the other device must also be set up for auto-negotiation.

On other devices, if Auto-Negotiation is not in use, you can manually define the port speed:

• 10 Mbps
• 100 Mbps
• 1 Gbps

Auto-negotiation is mandatory for 1000 BASE-T.

If you are using a LAG port with the protection mode set to link status, you must enable auto-negotiation on the physical port associated with the LAG port.

Turn Laser Mode Off when the SFP fiber on the traffic port is only receiving, and not transmitting.

Available on traffic ports only.

Note: If you turn off Laser Mode while auto-negotiation is enabled, auto-negotiation will be disabled since it requires twoway communication.

By default, Skylight element: LX-S ports are named as follows: PORT-5, PORT-6, PORT-7, PORT-8, Management, LAG-3 andLAG-4.

When a LAG port is enabled, the physical ports enslaved by the LAG port must have the same MTU settings to ensure error-free transmission.

Supported values: 64–10240

Default value: 2000

Notes: Setting the MTU to a value smaller than 1518 bytes on a port used for management may cause a loss of access to the unit.

The MTU size supports up to 12 additional bytes over and above the defined value to account for a VLAN stack of up to three tags.

Available options are:

• SFP
• RJ45
• Management

One-Way EVC: Propagate faults in one direction based on the link status of the opposite port or based on the EVC status.

Link Speed

Auto-negotiation: The unit automatically negotiates port speed and duplex type with the device to which it is connected. For autonegotiation to be successful, the other device must also be set up for auto-negotiation.

On other devices, if Auto-Negotiation is not in use, you can manually define the port speed:

• 10 Mbps
• 100 Mbps
• 1 Gbps

• Half-Duplex: Transmission in one direction at a time.
• Full-Duplex: Transmission in both directions at the same time.

In 1G mode, auto-negotiation may be selected (advertises 1000 Mbps, full-duplex only). On the Skylight element Skylight element: LX-SAuto-negotiation is mandatory for 1000 BASE-T.

Note: (SFP fiber ports only)

• For 1000BASE-X links, a Remote Fault Indicator (RFI) using auto-negotiation advertisement is sent to the link partner.
• For 100BASE-FX links, the Far End Fault Indication (FEFI) idle pattern is sent to the link partner.

Entering a value of 0 puts the laser into a disabled state waiting for the opposite side to send a light pulse to re-establish the link. Consequently, a value of 0 should not be configured on both sides, otherwise the link will never be re-established.

Timeout value has a range of 0–60 minutes. The default is 5 minutes.

Note: This parameter is only available on LAG ports. When using Fault propagation with LAG port protection, you must enable the protection on both LAG ports for the fault propagation to work correctly.

If you select LACP status, you must create an L2PT rule with an operation mode of Peer and protocol LACP on this port in order to terminate LACP frames.

If you select LACP status, you must also set up LAG protection in the page Protection ▶LACP ▶Configuration.

If you select link status for a LAG port, you must enable autonegotiation on the physical port associated with the LAG port.

If you select ERP status, you must also set up ERP protection in the page Protection ▶ERP ▶Configuration.

Note: This parameter is only available on LAG ports.

Note: This parameter is only available on LAG ports with the Protection Mode set to link status or LACP status.

Note: This parameter is only available on LAG ports with protection mode set to link status or LACP status.

Notes: The timer is restarted if a signal loss is detected during this period.

This parameter is only available on LAG ports with protection mode set to Link Status or LACP Status.

• 1: ERP version 1. Only one instance of ERP is supported per LAG port.
• 2: ERP version 2. Multiple instances of ERP can be set up per LAG port.

• Disable: Pause frames are disabled.
• Local: Pause frames are processed locally.

Notes: This parameter is available on Auxiliary ports only.

This parameter is not available on LAG ports.

Range: 1–3,600

Note: This parameter is not available on LAG ports.

Note: This parameter is not available on LAG ports.

• Current Connector Configuration: If the link partner is also using Auto MDI, the resulting connector configuration is correct but random. A cross-over cable present on the cabling plant results in both partners using the same connector configuration.
• Mastership Mode: On 1-Gbps copper ports, this reports the clock mastership mode. In auto mode, the clock master is determined by the auto-negotiation process. In forced mode, the clock is forced into slave if the port is a clock reference for the system, otherwise it is master.

• Link Down: The physical link is down and no signal is detected (when a port is disabled, Current Status will also show Link Down).
• Link Dormant: The port is enabled and a signal is detected but the port cannot forward traffic, as it is in a "stand-by" state.