Manual Allied Telesis AT-GS950-16 (page 45 of 50) (English)

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AT-GS950/8, AT-GS950/16 and AT-GS950/24 Switches Installation Guide

 If the remote network device is a management device,

use its management firmware to determine whether its

port is enabled.

 Test the attenuation on the fiber optic cable with a fiber

optic tester to determine whether the optical signal is

too weak (sensitivity) or too strong (maximum input

power).

Problem 5: Network performance between a twisted pair port on the

switch and a network device is slow.

Solution: There might be a duplex mode mismatch between the port and

the network device. This occurs when a twisted pair port using Auto-

Negotiation is connected to a device with a fixed duplex mode of full

duplex. If this is the cause of the problem, adjust the duplex mode of the

port on the network device or on the switch so that both ports are using the

same duplex mode.

Problem 6: A port’s LINK/ACT LED is blinking.

Solutions: The link between the port and the network device is

intermittent. Try the following:

 Connect another network device with a different cable

to the port. If the Link LED remains steady on, then the

problem is with the original cable or the network

device.

 If the problem is with an SFP transceiver, check that

the transceiver is fully inserted in the slot.

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Allied Telesis AT-GS950-16 Manual

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