Net Optics GigaBit Fiber SFP Port Aggregator Tap User Manual

Installation Guide for

GigaBit Fiber Port Aggregator Tap

with SFP Monitor Ports

(800-0037) Doc. PUBTPASXSFPU Rev. 1, 07/08

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Product Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Application Diagrams: Memory Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Connecting to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

GigaBit Fiber Port Aggregator Tap

Connecting the Monitoring Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Changing the SFP Monitor Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Connecting Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Limitation on Warranty and Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

GigaBit Fiber Port Aggregator Tap

PLEASE READ THESE LEGAL NOTICES CAREFULLY.

By using a Net Optics Port Aggregator Tap you agree to the terms and conditions of usage set forth
by Net Optics, Inc., the Tap manufacturer.

No licenses, express or implied, are granted with respect to any of the technology described in this
manual. Net Optics retains all intellectual property rights associated with the technology described in
this manual. This manual is intended to assist with installing Net Optics products into your network.

Trademarks and Copyrights

© 2010 by Net Optics, Inc. Net Optics® is a registered trademark of Net Optics, Inc. Additional com­pany and product names may be trademarks or registered trademarks of the individual companies and
are respectfully acknowledged.

Additional Information

Net Optics, Inc. reserves the right to make changes in specications and other information contained

in this document without prior notice. Every effort has been made to ensure that the information in
this document is accurate.

Introduction

Net Optics GigaBit Port Aggregator Taps with SFP Monitor Ports provide
ultra-efcient access to critical GigaBit links. This pioneering technology en­ables any two devices to simultaneously monitor a full-duplex link using only
one NIC per monitoring device. Small Form Factor Pluggable (SFP) connec­tors on the Monitor Ports allow these Port Aggregators to also perform media

conversion from ber to copper.

Typically, full-duplex monitoring with a network tap requires two NICs (or
a dual channel NIC) – one interface for each side of the tapped full-duplex
connection. The Gigabit Port Aggregator Tap combines and regenerates these
streams, sending all aggregated data out one or two passive monitoring ports.

The best part of this innovation is the onboard memory that ensures trafc

isn't dropped during bursts.

The GigaBit Port Aggregator Tap is designed to handle the combined trafc of
a single full-duplex link. Normally, the trafc should be below the receiving

capacity of the NIC, that is, less than 1 Gbps.

When the trafc queue exceeds the capacity of the NIC, the Tap buffers the
overow up to 1GB. The buffers clear automatically when the trafc volume
falls below the receiving capacity of the NIC. For example, if there is a trafc

burst and a Tap connected to a 1 Gbps network port on a monitoring device is

now receiving 1.2 Gbps of trafc, the Tap buffers data until the burst is over.

The Tap then sends the buffered data to the monitoring device until the buffer
is cleared.

GigaBit Fiber Port Aggregator Tap

Key Features

Technology

• Supports full-duplex monitoring with a single NIC, increasing monitoring
efciency

• Regeneration Tap technology enables two devices to simultaneously moni-
tor all aggregated trafc – using only one NIC per device

• 1GB of buffer memory prevents data loss during excessive trafc loads

• Provides complete full-duplex visibility at 1 Gbps without data stream

interference or introducing a point of failure

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