UNICOM USRobotics USR4503 Installation Manual

10/100/1000 Copper Aggregation Tap

Package Contents:

• USR4503 10/100/1000 Copper Aggregation Tap with attached mounting bracket for use with URS4500-RMK
• 1 AC Power supply with power cords for US, UK/IRE, Europe
• Information Card
The USR4503 Aggregation Tap will tap a single network link and make copies of traffic. These copies can be kept separate and sent out two
ports, or they can be combined to allow full duplex monitoring out each port. In our example below, we show a tapped connection between
a firewall and router.

Installation

The USR4503 Network ports A and B are inserted between two directly connected network devices (i.e. firewall and router). Traffic will flow
between these network ports even if the tap is now powered.
• Connect your monitoring device to TAP (Monitor) port A. This port will transmit incoming traffic on Network Port A, or a combination of
both Network ports.
• Connect your monitoring device to TAP (Monitor) port B. This port will transmit incoming traffic on Network port B, or a combination of
both Network ports.
Copy from Firewall

Switch Settings

A convenient switch on the back of the tap can be used to toggle aggregation
on or off. When set to "NON," Monitor port A will only transmit a copy of the
recieved traffic on Network port A, and Monitor port B will only transmit a copy
of recieved traffic on Network port B.
When the device is set to "AGG" mode, the tap combines traffic from both
Network port A and Network port B and transmits an aggregated copy from
each monitor port.
Additional features
• The USR4503 supports dual redundant power supplies. One power supply is provided, a second can be sourced from USRobotics. When
used with two power supplies the tap will remain powered even if one power supply fails. It is recommended that each power supply is
connected to a separte circuit breaker to minimize the risk of power loss.
• If power is lost on the USR4503, 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.
• The URS4503 supports passing Power-Over-Ethernet (PoE) over the network ports.
• Supports frame sizes up to 10,240 bytes
10/100/1000 Copper Aggregation Tap
1
Firewall
USR4503 - Installation Guide
AGGREGATION
NON-AGGREGATION
2
Copy from Router
Selectable Switch
Router