Uni-Com USR4524 User manual

Gigabit Ethernet Aggregation TAP (USB)
USR4524 - Installation Guide
The USR4524 Gigabit Ethernet Aggregation TAP (Test Access Point) with USB monitoring will tap a single network link or
segment. Network segments may be monitored using a network analyzer, security devices or any monitoring appliance or tool
via a USB cable. Capture full-duplex traffic without dropping any packets. This USB TAP can be powered via USB 3 as well as
the included optional power supply.
Package Contents:
• USR4524 Gigabit Ethernet Aggregation TAP (USB) with mounting tabs for use with URS4522-RMK (4 unit 1U rackmount)
• 1 USB 3.0 cable
• 1 AC power supply with clips for US, UK, EU, AU
• 2 mounting screws
• Information Card
©2021 USRobotics, a Division of UNICOM Global | www.usr.com
USB 3.0
LFP LNK LFP LNK
A B
1
ON
2 3 4 5 6 7 8 Power
Connector
USB Port
RJ45
Ethernet
Ports
Rear View
Front View
LFP: Link Failure Propagation
LNK: Link Activity
A/B: RJ45 Ethernet Ports
USB 3.0 Port
DIP switches shown in default
configuration
Installation Steps
1. This product is dependent on OS drivers. If you have a Windows 10, 8, 8.1, or 7 computer this TAP will not
require you to install device drivers if the OS is up-to-date. Check www.usr.com/support/4524 for latest driver
information. Download drivers if needed.
2. Unpack the TAP and, if desired attach to the optional rack mount. Instructions are provided on page 4.
DO NOT CONNECT THE POWER/USB at this point.
3. Configure the DIP switches (located on the back side of the unit) for the operating mode of your choice.
4. Install the network TAP into the live network. This step needs to be done with no power connected to the TAP. Using
standard Ethernet cables, connect ports A and B between two live network devices where monitoring is desired.
5. Verify network traffic is flowing, confirming that network cabling is correct.
6. If your USB host is not 3.2 Gen 1 or higher, connect the power supply to the USR4524 and plug it in to an available power
source.
7. Attach the TAP to your computer/server with the provided USB 3.0 cable. Windows should immediately detect a high
speed USB hub device connected. Use the USB port to connect with monitoring tools for traditional traffic monitoring.
USB 3.0
LFP LNK LFP LNK
Live
Network
Device 1
Live
Network
Device 2
USB 3.0
LFP LNK LFP LNK
Monitor Port
Note: Anytime the configuration switches are changed, remove and then re-apply power for the changes to take effect.

Gigabit Ethernet Aggregation TAP (USB)
USR4524 - Installation Guide
Page 2
©2021 USRobotics, a Division of UNICOM Global | www.usr.com
Configuration/DIP Switch Settings
DIP switches on the back of the TAP can be used to configure speeds,
modes, and link failure propagation.
Definitions
LFP (Link Failure Propagation): Allows link state to be mirrored to the
adjacent live network interfaces.
Duplex: The AUTO setting allows auto-negotiate to advertise full
duplex operation. The FULL setting forces full duplex operation without
using auto-negotiate.
SYNC (Synchronization): Allows auto-negotiate to choose the link
speed and synchronizes the link speed of the network ports.
N/A (Not applicable): The 4 N/A DIP switches have no effect on this product.
Factory Default Sengs
Factory Default Se�ng: DIP switches 1-4 ON

1
ON
OFF
2345678
Ports A/B Speed Duplex LFP N/A
ON
OFF
12345678
FORCED FORCED AUTO LFP
ON N/A
FULLSYNCSYNC LFP
OFF N/A
N/A
N/A
N/A
N/A
N/A
N/A
Ports A/B Speed Duplex LFP N/A
Ports A/B Speed Mode
SW1 SW2
Sync Mode*
Forces AUTO Duplex
Forces LFP ON
OFF OFF
10 Mbps ON OFF
100 Mbps OFF ON
1 Gbps ON ON
* Synchronization Mode provides a plug-n-play zero configuration design. Synchronization Mode will determine the highest
supported speed of network ports [A] and [B]. Ports [A] and [B] will link, then advertise and connect at the highest supported
common network speed.
Link Failure Propagation
SW4
LFP On ON
LFP Off OFF
Duplex
SW3
Auto ON
Full Duplex OFF

Gigabit Ethernet Aggregation TAP (USB)
USR4524 - Installation Guide
©2021 USRobotics, a Division of UNICOM Global | www.usr.com
Page 3
Link Failure Propagation (LFP) :
• LFP is used mostly for High Availability (HA) designed networks.
• LFP applies to Network ports only.
• When enabled, LFP can sense a network failure and reflect the failure to the adjacent port of the live network allowing the
network’s failover mechanism to switch over to the secondary network path.
• LFP ensures an instant switch to the secondary link to maintain 100% uptime.
Configuration/DIP Switch Example
• This TAP operates in Aggregation mode, which
combines traffic from both port A and port B and
transmits an aggregated copy from the USB monitor
port.
LEDs
The USR4524 has 4 LED indicators - 2 for each port as
shown to the right.
LED Status Meaning
LNK
ON Link is active
FLASHING Link is active and packets are flowing
OFF Link is not active
LFP A LFP B
LFP
Sync enabled
ON OFF Network speed of ports A/B is 1G
OFF ON Network speed of ports A/B is 100M
OFF OFF Network speed of ports A/B is 10M
Sync disabled
LFP enabled
ON OFF Link A failure is detected
OFF ON Link B failure is detected
OFF OFF Link failure is not detected
Sync disabled
LFP disabled OFF OFF LFP is disabled
USB 3.0
LFP LNK LFP LNK
A B
USB 3.0
LFP LNK LFP LNK
C
Monitor Tool
Router Switch
A B
Network Ports

Gigabit Ethernet Aggregation TAP (USB)
USR4524 - Installation Guide
©2021 USRobotics, a Division of UNICOM Global | www.usr.com
Page 4
Operating Notes:
• The USR4524 operates in aggregation mode, it is important to consider the link utilization on the network links. If the
combined bidirectional traffic over the network ports exceeds the speed of the monitoring devices, loss of the traffic through
the monitoring ports will occur.
• At the default settings, the network ports on the USR4524 are set to 1G speed. If these ports are connected to networking
devices with manual speed settings, confirm that the devices on either side of the TAP are at the same speed. For optimal
results set all connected networking devices to AUTO speed negotiation.
• For up to 1 Gbps speeds, use Cat 5 or better cable with a maximum length between
network devices (not including the TAP) of 100 meters.
• The TAP ethernet ports use Auto-MDI/MDI-X, so either crossover cables or straight
cables may be used.
• If power is lost on the USR4524, internal relays on the network ports will close
and allow traffic to continue to pass through. Monitor ports will not transmit traffic
while the device is powered off.
• Supports jumbo frame sizes up to 9,216 bytes.
Rackmounting the USR4524 Aggregation TAP
The USR4522-RMK rackmount kit is available separately to mount 4 units horizontally.
Installing the USR4524 Aggregation TAP into the USR4522-RMK Rackmount unit:
1. Insert the TAP into any available slot of the installed rackmount.
2. Align the rackmount tabs.
3. Insert and tighten included screws to secure the TAP to the rack.
4. Install into a 1U space in a standard 19” rack. Mounting screws are included with the USR4522-RMK.
Warranty and Support Information:
This product is subject to the U.S. Robotics Corporation Limited Warranty. To view a copy of the Limited Warranty, please see:
www.usr.com/support/4524
For information on how to contact USR Technical Support, please see the USR corporate website at: www.usr.com/support
Regulatory Information:
CE Compliance Declaration of Conformity
Hereby, USRobotics declares that this TAP, USR Gigabit Ethernet Aggregation TAP (USB), is in compliance with the essential
requirements and other relevant provisions of RoHS Directive EU 2015/863; EMC Directive 2014/30/EU; Low Voltage Directive
2014/35/EU and ErP Directive 2009/125/EC. An electronic copy of the original CE Declaration of Conformity is available at the USR
website: www.usr.com/support/4524
This product is subject to Directive 2012/19/EU of the European Parliament and the Council of the European Union on waste
electrical and electronic equipment (WEEE) and, in jurisdictions adopting that Directive, is marked as being put on the market after
August 13, 2005, and should not be disposed of as unsorted municipal waste. Please utilize your local WEEE collection facilities
in the disposition of this product and otherwise observe all applicable requirements. For further information on the requirements
regarding the disposition of this product and collection facilities that may be available to you, please visit: www.usr.com/weee
www.usr.com/regulatory-compliance-export/
Network Failsafe
USB 3.0
LFP LNK LFP LNK
C
Monitor Port
A B
Network Ports
USB 3.0
LFP LNK LFP LNK
A B