Allied Telesis AT-GS950/10PS, Руководство по установке

Страница: 67 / 72

GS950/PS Series Switches Installation Guide
67

Try connecting another network device to the fiber optic port using
a different cable. If the port is able to establish a link, then the
problem is with the cable or with the other network device.

Use the switch’s management software to verify that the port is
enabled.

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.