// NEOX
PacketRaven
QUICK USER GUIDE
6.1 Link Loss Detection (LLD)
Link Loss Detection is a function that checks whether the link has failed on either network port A or network
port B. If the link has failed on network port A when LLD is activated, the TAP also shuts down the link on
network port B, and vice versa. When the LLD function is selected (
switch 1
), the configuration is as follows:
• Activate LLD: Switch value
1
• Deactivate LLD: Switch value
0
6.2 Operating Mode Configuration
(may not be modifiable in the case of fixed pre-configured models!)
When selecting the operating mode (
switches 2 & 3
), the configuration is as follows:
The desired configuration should be set before plugging in the mains cable.
If an invalid configuration has been selected, all LEDs on the unit light up and the relay switches will not be
activated. In this case, switch off the unit and check the DIP switches.
When changing the configuration via DIP switches, it is always necessary to perform a restart by disconnecting
the power supply so that the new settings are activated!
• Breakout:
Each Ethernet packet transmitted via the network line is mirrored separately in
this mode while maintaining data integrity in the TAP. The send and receive directions are
output separately on the two monitoring ports so that the network traffic can be analysed per
data direction in this case. Another great advantage of the Breakout mode is the visibility of
the network traffic even with a fully loaded network connection. In this mode, the set network
speed is transferred to the monitoring ports.
For example, if the TAP is configured for 100Base-T, then both monitoring ports will also com-
municate on 100Base-T accordingly.
Switch value 00
• Aggregation
: In this mode, the data streams are bundled and output aggregated on both of
the monitoring ports. This allows you to evaluate the network data of a full duplex line simul-
taneously with a single network interface on your analyzer. Due to the aggregation in hard-
ware (FPGA), faulty packet sequences during recording are a thing of the past in this mode.
For example, you can analyse the entire data traffic aggregated in 100Base-Tx lines without
loss.
The monitoring ports will always boot the link with 1000Base-TX, no matter what is negotiated
on the network side.
Switch value 01
• Regeneration
: Regeneration is used to capture 100% full duplex traffic that can be sent to
multiple monitoring devices (up to 3 in this case) for analysis of your network. In this mode, the
network speed settings are synchronised as in Breakout mode and the setting on the DIP switch
is applied to all ports.
Switch value 10
As shown in the illustration on the left, the first
switch is used as the LLD on/off switch, the se-
cond and third are used to select the operating mode,
and the fourth and fifth are used to select the speed.
The switches numbered 6, 7 and 8 are ignored and left for
future use.
6. Configuration via DIP switch
Fail-Safe Mode
: Since Network TAPs are usually installed in critical network lines, it must be ensured that
TAPs do not affect the line in any way.
By means of fail-safe, the TAP behaves like a cable bridge in the event of a failure or arbitrary deactivation
and ensures that the active network connection is not interrupted or at least continues to function without
the TAP function and thus does not negatively affect the active line.
