Viavi 10/100 Copper nTAP, Руководство пользователя

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6
Chapter 6: LEDs and
connection sequence
The 10/100 Copper nTAP is passive. The 10/100 Copper nTAP supports Power over
Ethernet (PoE).
When the 10/100 Copper nTAP experiences power loss, the following occurs:
♦
If you are using a redundant power supply or the TAP is attached to an
uninterruptible power supply (UPS), it provides power with no loss of
network connection.
♦
If you are not using a redundant power supply or UPS, or power to both
power supplies is lost, then:
●
The Analyzer ports stop working and the analysis device(s) connected
to the TAP will go “dark.”
●
The TAP continues to pass data between the network devices
connected to it (firewall/router/switch to server/switch). In this sense
the TAP is passive.
●
The network devices connected to the TAP on the Link ports must
renegotiate a connection with each other because the TAP has dropped
out. This may take a few seconds.
When turned on, the TAP performs a sequence of steps to determine whether its
link ports are connected to any devices, and what speeds and other capabilities
those devices have. The blinking pattern of the LEDs indicate which step of the
connection process the TAP is performing. The duration of each state depends on
the type of equipment attached to each port of the TAP. Here are the connection
steps, listed in the order they occur:
1. Capabilities search . Both link ports/connections on the TAP are attempting
to attach to their respective devices and determine a common speed and
other capabilities. The LED pattern is that the Speed LEDs flash (slower) and
the Link LEDs flicker (faster).