Net Optics iTap Port Aggregator User manual

Net Optics
Brand
Net Optics
Model
iTap Port Aggregator
Type
User manual
Intelligent TapTM
The iTap Port Aggregator makes network
monitoring easier. The powerful combi-
nation of a permanent, passive access
point and remote monitoring of key traffic
indicators increases your management
options and speeds response to troubled
links. When an iTap Port Aggregator
indicates high utilization or CRC errors are
occurring on a critical network link, you
are given timely warning without relying
on other time-consuming tools.
The iTap Port Aggregator displays the link
utilization level in both directions in real
time, with the size and time of the last
peak, right on the front panel. The iTap
Port Aggregator is accessible from remote
interfaces that provide information and
control from anywhere in the network.
The iTap Port Aggregator gives you the
information and the passive access point
you need to respond quickly to network
events.
For greater flexibility and response speed,
use iTap Port Aggregators with Net
Optics’ SpyderSwitches and control the
deployment of your analyzers from one
point without disturbing a single network
connection.
Access
• Real time traffic utilization levels
• Size and time of the greatest traffic peaks
• Counters for total packets, total bytes,
CRC errors, collisions, and more
• Status for system, link, and power
Remote
• Browser-based Web Manager
• Management Information Base (MIB) for
third-party SNMP tools
• SNMP tool, System Manager
• SNMP traps indicate status changes for
system, link, power, and threshold
• Wireless option (IEEE 802.11b,11Kbps)
Control
• Turn off Management and Monitor Ports
• Set utilization alarm threshold
• Reset statistics counters and peak data
• Turn off LCD information
Easy to Use
• Uses only one monitoring device NIC
• At-a-glance monitoring from front panel
• Completely passive and device neutral
• Cables included
• Application diagram shows all connections
Aggregation + information =
network monitoring exibility
intelligent tap
®
The World’s Only Intelligent Tap
iTap 10/100/1000BaseT Port Aggregator
Best in Aggregation
The iTap Port Aggregator combines and
regenerates both directions of a full-duplex
stream, sending all aggregated traffic out
one or two separate passive monitoring
ports. Typically, full-duplex monitoring with
a network tap requires two NICs (or a
dual-channel NIC)—one interface for each
side of the full-duplex link. Net Optics’
iTap Port Aggregator enables one or two
devices to simultaneously monitor a full-
duplex link using only one NIC per device.
After the traffic has been aggregated to
a single flow, it is no longer possible to
distinguish the utilization levels of each
side of the bi-directional link. The iTap
Port Aggregator tracks the utilization
levels before aggregation, keeping this
vital information easily accessible from its
remote and command line interfaces.
With its visual display, remote interfaces,
and well-buffered aggregation, Net Optics’
iTap Port Aggregator creates an entirely
new category of passive access devices.
disponible sur
www.netwalkerstore.com
(cliquer ici)
Access Information Anywhere
The Web Manager and System Manager
allow you to remotely set parameters,
view status information, and monitor traffic
statistical data. These interfaces provide
security and performance information such
as the number of over- and under-sized
packets, packet collisions, and CRC errors.
You can remotely set the alarm thresholds,
clear the traffic data counters, and turn on
or off a Monitor Port. This access is also
available via an optional wireless link from
your wireless PDA or laptop.
Buffers Absorb Bursts
When the traffic levels exceed the capacity
of the receiving NIC, the iTap Port
Aggregator stores the overflow traffic in
buffer memory. For high-load links, the iTap
Port Aggregator is available with 1GB of
memory. The buffers clear automatically
when the traffic volume falls below the
receiving capacity
of the NIC. These
buffers allow the iTap
Port Aggregator to
absorb traffic bursts
without dropping
packets.
Trafc Monitoring
The iTap Port Aggregator monitors the
utilization levels of both sides of the full-
duplex link. Knowing the utilization levels
is critical in determining if packets could
be dropped during high-load periods.
This information is displayed on the front
panel and is available from the remote
interfaces. The iTap Port Aggregator
allows you to set a threshold for each
side of the full-duplex link at which an
alarm is triggered. For example, the iTap
Port Aggregator can warn you when
the utilization in either direction passes
the 30% level. When a threshold level is
exceeded, the alarm LED illuminates and
the remote interfaces record the event.
The iTap Port Aggregator records the level
of the highest peak along with the date
and time. Since the iTap Port Aggregator
is monitoring the utilization levels, this
information is always available regardless
of the aggregation process.
Seeing is Believing
The display and alarm LEDs provide a
quick visual check that the utilization
levels are not exceeding the capacity of
the monitoring device or a pre-determined
threshold. From the display, you can view
the current bandwidth utilization of each
side of a full-duplex link with the size and
time of the highest peak. A quick check of
the display lets you know if there was an
event that requires further investigation.
After taking action on a utilization or
peak event, you can reset the data from
a recessed reset button on the front panel
or from a remote interface. The iTap Port
Aggregator is ready to detect and display
the next critical event.
iTap Port Aggregators form an early warning
system to detect network anomalies.
The greatest peaks are also displayed
Current utilization is available at a glance
Web Manager
The iTap Port Aggregator has
built-in support for remote control
and monitoring from any computer with
an Internet browser. Net Optics Web
Manager is the browser-based interface
that allows you to change settings, view
status, and retrieve data remotely with
simple-to-use controls. When you access
an iTap Port Aggregator with Web
Manager, all configurations, status, and
traffic data are displayed on a single
page. Changes to the configuration can
be made with a few clicks of the mouse.
System Manager
iTap Port Aggregators can be used as
a system managed via Simple Network
Management Protocol (SNMP) from
a single interface. Net Optics System
Manager is an SNMP management tool
that offers central management of all
Net Optics iTap devices in the network.
You can organize iTaps into groups
according to workgroup, location, or any
other criteria. As with Web Manager, you
can view all status, configuration, and
traffic information and make changes
quickly to any iTap in the system. The
iTap Port Aggregator generates SNMP
traps for system status, threshold alarm,
link status, and power status. If you are
already using an SNMP management
tool, iTap Port Aggregators can be
fully accessed after loading Net Optics
Management Information Base (MIB) file.
Security, Visibility, and Reliability
You have the option of setting the iTap
Port Aggregator so that it will not display
data on the LCD and the Management
Port will be disabled, thus preventing it
from being accessed from the network.
The Monitor Ports can also be turned
off to prevent unauthorized access to
the network link. The monitoring device
connected to the iTap Port Aggregator
sees all full-duplex traffic including Layer
1 and Layer 2 errors. Redundant power
connections provide uptime protection.
1Access the web for
any iTap status.
2Net Optics System Manager gives
you access to all your iTap Port
Aggregators around the world.
3Access information from wireless
PDAs and laptop computers.
Features and Benets
®
1130 Old MountainView-Alviso Road • Sunnyvale, CA 94089
+1 (408) 737-7777 • www.netoptics.com
Net Optics®, Intelligent TapTM, iTapTM, and iTap into your Network® are trademarks of Net Optics, Inc.
Copyright 2006 Net Optics, Inc. All rights reserved. Revised 10/06
OpenView is a registered trademark of the Hewlett-Packard Company. Tivoli is a registered trademark of the IBM Corporation.
Specications
Copper
Input: 100-240 VAC, 0.5A, 47-63Hz
Output: 12V, 3A
Cable Type: 22-24 AWG Unshielded, CAT5E
Connectors: RJ45, 8-pin Connectors
Electrical
Power Supply Input: 100-240VAC, 0.5A, 47-63Hz
Output: 12V, 3A
Memory
1GB buffer
Environmental
Operating Temperature: 0˚C to 55˚C
Storage Temperature: -10˚C to 70˚C
Relative Humidity: 10% min, 95% max, non-condensing
Mechanical
Dimensions: 1.125” high x 11” deep x 8.5” wide
Indicators
(1) 2x16 LCD
(3) Link LEDs
(2) Threshold Alarm LEDs
(2) Power LEDS
Software
Command Line Interface (CLI): Any terminal
emulation software
Net Optics Web Manager: Any browser
Net Optics System Manager: Windows 98,
Windows 2000, Windows XP
Wireless Option
Standard: Conforms to IEEE 802.11b, 11 Mbps
Indoor Range (typical): 50 feet
Outdoor Range: 100 feet
Available Base Models
10/100/1000BaseT Copper
Options
WiFi: IEEE 802.11b
Certifications
Fully RoHS compliant
Part Number
iTP-PAD-CU3
Front Panel Display and LEDs Real-time utilization and peak traffic information displayed on the front panel saves you time and money spent using other tools to get basic information.
Alarm LEDs indicate if traffic levels have exceeded a set threshold, allowing you to respond quickly to changing traffic conditions.
Net Optics Web Manager Without any specialized software, you can access the traffic information monitored by any iTap Port Aggregator. All you need is a computer with a browser and
access to the IP address of the iTap Port Aggregator. No matter where you are, you can control your iTap Port Aggregator and monitor traffic information.
Net Optics System Manager Net Optics’ SNMP management tool, System Manager, gives you single-point control and visibility into any link in the network with an iTap Port Aggregator
anywhere in the world. Distributed on strategic links, iTap Port Aggregators provide baseline information and early warning alarms to help you deploy your
security and monitoring devices more effectively over more links.
Command Line Interface The password-protected command line interface gives you complete access to all of iTap Port Aggregator’s functionality via an RS232 port. Most importantly,
you can use the CLI to disable the Management Port and prevent the front panel display from showing traffic information.
Net Optics Management
Information Base (MIB)
Use the iTap Port Aggregator with your current SNMP management tool. Net Optics’ MIB and SNMP traps are completely compatible with popular SNMP tools
such as OpenView and Tivoli®.
Wireless Option With the optional wireless communication, you can access your iTap Port Aggregator with any wireless enabled device, including PDAs and laptops. With this
wireless freedom, you no longer need to connect a management port to monitor your network.
Aggregation Net Optics’ proven port aggregation technology allows you to monitor traffic using a single NIC on your monitoring device. Unlike any other port aggregator
tap, the iTap Port Aggregator monitors utilization levels of both sides of the full-duplex link so this information is not lost. 512MB traffic buffers help ensure
that your monitoring device does not miss traffic during bursts.
Cables Included All cables required for installation are included. Follow the connection diagram on top of the iTap Port Aggregator and you are halfway done with the instal-
lation of your iTap Port Aggregator.
disponible sur
www.netwalkerstore.com
(cliquer ici)
The extra 400 Mbps of traffic is
stored in the 500 megabyte buffer
for Port A. Memory continues to
fill until the 500 megabyte capacity
is reached, or the burst ends.
(A separate 500 megabyte buffer is
also available to handle a burst
on Port B.)
2
Memory
Memory Once the memory has cleared, the
monitoring device begins receiving
new data directly from the link. Using
a single NIC, the monitoring device
receives all traffic from Side A and
Side B, including physical layer errors.
The Tap applies a first-in, first-out
process to all packets. Once the burst
has ended and the NIC's utilization is
again below 100 percent, the Tap first
processes the packets that were stored
in memory. As long as the NICʼs
utilization remains below 100 percent,
this process continues uninterrupted
until the memory clears.
2
1
State 1: Side A + Side B is less than or equal to 100%
of the NIC's receive capacity.
Example: On a 1000 Mbps link, Side A is at 300 Mbps and Side B is at 500 Mbps.
The NIC receives 800 Mbps of traffic (80% utilization), so no memory is required
for the monitoring device NIC to process all full-duplex traffic.
State 2: Side A + Side B becomes greater than 100%
of the NIC's receive capacity.
Example: There is a burst of traffic, so Side A is now at 900 Mbps while
Side B remains at 500 Mbps. The NIC's utilization is at 140%, requiring
the use of memory to help prevent data loss.
State 3: Side A + Side B is once again less than 100%
of the NIC's receive capacity.
Example: On a 1000 Mbps link, Side A is again at 300 Mbps and Side B
remains at 500 Mbps. The NIC's utilization is again at 80%.
iTap GigaBit Dual Port Aggregator Memory Operation
Copyright © 1996-2006 Net Optics, Inc.
Each using a single NIC,
the monitoring devices
both receive all combined
traffic from Side A and
Side B, including physical
layer errors.
1
FirewallRouter
Monitoring
Device 1
iTap 10/100/1000 Dual
Port Aggregator
iTap 10/100/1000 Dual
Port Aggregator
iTap 10/100/1000 Dual
Port Aggregator
Monitoring
Device 2
Side B
Side A
B1 2
A
www.netoptics.com
®
RESET
Network
Monitor
1
2
B
A
Dual Port Aggregator
GigaBit Copper
TM
LINKACT LINKACT LINKACT LINKACT
Each using a single NIC,
the monitoring devices
both receive all combined
traffic from Side A and
Side B, including physical
layer errors.
1
FirewallRouter
Monitoring
Device 1
Monitoring
Device 2
Side B
Side A
Side A +
Side B
Side A +
Side B
FirewallRouter
Monitoring
Device 1
Monitoring
Device 2
Side B
Side A
B1 2
A
www.netoptics.com
®
RESET
Network
Monitor
1
2
B
A
Dual Port Aggregator
GigaBit Copper
TM
LINKACT LINKACT LINKACT LINKACT
Side A +
Side B
B1 2
A
www.netoptics.com
®
RESET
Network
Monitor
1
2
B
A
Dual Port Aggregator
GigaBit Copper
TM
LINKACT LINKACT LINKACT LINKACT
User Guide
iTap Dual Port Aggregator
Doc. PUBITPPADU Rev. 3, 11/06
disponible sur
www.netwalkerstore.com
(cliquer ici)
PLEASE READ THESE LEGAL NOTICES CAREFULLY.
By using a Net Optics iTap GigaBit Dual Port Aggregator you agree to the terms and conditions of usage
set forth by Net Optics, Inc.
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
© 2006 by Net Optics, Inc. Net Optics® is a registered trademark of Net Optics, Inc. iTapTM is a trade-
mark of Net Optics, Inc. Additional company and product names may be trademarks or registered trade-
marks 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.
iTap Dual Port Aggregator
Contents
Chapter 1
Introduction
Overview ..........................................................1
Memory ..........................................................4
Unpacking and Inspection .............................................6
Available Models ...................................................6
Chapter 2
Installing the iTap
Overview ..........................................................7
SFP Installation (Fiber Model) .........................................9
Planning the Installation .............................................10
UL Rack Mounting .................................................10
Conguring the iTap ................................................11
Using the Command Line Interface (CLI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Mounting the iTap ..................................................15
Connecting the Management Port ......................................15
Connecting to the Network ...........................................16
Connecting to the Monitoring Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Connecting Power ..................................................19
Checking the Installation ............................................19
Chapter 3
Using the Front Panel Interface
Overview .........................................................20
Display ..........................................................20
Utilization Alarm LEDs .............................................21
Link LEDs ........................................................21
Power LEDs ......................................................21
Reset Button ......................................................21
iTap Dual Port Aggregator
Chapter 4
Using Web Manager
Overview .........................................................22
Accessing Web Manager .............................................22
Viewing System Status ..............................................24
Viewing Statistics ..................................................25
Conguring the iTap ................................................26
Chapter 5
Using System Manager
Overview .........................................................28
Installing System Manager ...........................................28
Exploring System Manager ...........................................32
Creating a Group ...................................................33
Deleting a Group ...................................................34
Adding iTaps ......................................................34
Deleting an iTap ...................................................37
Conguring an iTap ................................................38
Viewing iTap Information ............................................39
Modifying an iTap ..................................................41
Appendix A
Specications and Models
Specications .....................................................42
Available Models ..................................................42
Appendix B
Command Line Interface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
iTap Dual Port Aggregator
1
Chapter 1
Introduction
Overview
Thank you for purchasing the latest innovation in Tap technology – the iTap
GigaBit Dual Port Aggregator. Net Optics' GigaBit Dual Port Aggregator Taps
provide ultra-efcient access to critical GigaBit links using only one NIC on the
monitoring device. Net Optics’ iTap is a port aggregator Tap that gives you a quick
visual reference of link performance. The iTap GigaBit Port Aggregator monitors
and displays link bandwidth utilization on its front panel so you can see exactly
what is happening on both sides of the network link.
Intelligent TapTM
The iTap Port Aggregator displays the link utilization level, last peak with time
right on the front panel so you can see real-time utilization on both directions of
the network link. The iTap Port Aggregator is accessible from remote interfaces
that provide information and control from anywhere in the network. The iTap gives
you the information and the access point you need to respond quickly to network
events.
Performance Aggregation
The iTap Port Aggregator combines and regenerates both directions of a full-
duplex stream, sending all aggregated trafc out one or two separate monitoring
ports. Typically, full-duplex monitoring with a network tap requires two NICs (or a
dual channel NIC)–one interface for each side of the full-duplex link. Net Optics’
iTap Port Aggregator enables one or two devices to simultaneously monitor a full-
duplex link using only one NIC per device.
After the trafc has been aggregated to a single ow, it is no longer possible to
distinguish the utilization levels of each side of the bi-directional link. The iTap
Port Aggregator tracks the utilization levels before aggregation, keeping this vital
information easily accessible from its remote and command line interfaces.
Buffers Absorb Bursts
When the trafc levels exceed the capacity of the receiving NIC, the iTap Port
Aggregator stores the overow trafc in buffer memory. For high-load links, the
iTap Port Aggregator has 1GB (256MB on Gigbit only models) of buffer memory.
iTap Dual Port Aggregator
2
The buffers clear automatically when the trafc volume falls below the receiving
capacity of the NIC. These buffers allow the iTap Port Aggregator to absorb trafc
bursts without dropping packets.
Trafc Monitoring
The iTap Port Aggregator monitors the utilization levels of both sides of the full-
duplex link. This information is displayed on the front panel and is available from
the remote interfaces. The iTap Port Aggregator allows you to set a threshold for
each side of the full-duplex link at which an alarm is triggered. For example, the
iTap Port Aggregator can warn you when the utilization in either direction passes
the 30% level. When a threshold level is exceeded, the alarm LED illuminates and
the remote interfaces record the event. The iTap Port Aggregator records the level
of the highest peak along with the date and time. Since the iTap Port Aggregator is
monitoring the utilization levels, this information is always available regardless of
the aggregation process.
Seeing is Believing
The display and alarm LEDs provide a quick visual check that the utilization
levels are not exceeding the capacity of the monitoring device or a pre-determined
threshold. From the display, you can view the current bandwidth utilization of each
side of a full-duplex link with the size and time of the highest peak. A quick check
of the display lets you know if there was an event that requires further investiga-
tion. After taking action on a utilization or peak event, you can reset the data from
a recessed reset button on the front panel or from a remote interface.
Access Information Anywhere
The Web Manager and System Manager allow you to remotely set parameters,
view status information, and monitor trafc statistical data. These interfaces
provide security and performance information such as the number of over- and
under-sized packets, packet collisions, and CRC errors. You can remotely set the
alarm thresholds, clear the trafc data counters, and turn on or off a Monitor Port.
This access is also available via an optional wireless link from your wireless PDA
or laptop.
Web Manager
Net Optics' Web Manager is the browser-based interface that allows you to change
settings, view status, and retrieve data remotely with simple-to-use controls. When
you access an iTap Port Aggregator with Web Manager, all congurations, status,
and trafc data are displayed on a single page. Changes to the conguration can be
made with a few clicks of the mouse.
iTap Dual Port Aggregator
3
System Manager
iTap Port Aggregators can be used as a system managed via Simple Network Man-
agement Protocol (SNMP) from a single interface. Net Optics' System Manager
is an SNMP management tool that offers central management of all Net Optics
iTap devices in the network. You can organize iTaps into groups according to
workgroup, location, or any other criteria. As with Web Manager, you can view all
status, conguration, and trafc information and make changes quickly to any iTap
in the system. The iTap Port Aggregator generates SNMP alarm traps for system
status, threshold alarm, link status, and power status. If you are already using an
SNMP management tool, iTap Port Aggregators can be fully accessed after loading
Net Optics' Management Information Base (MIB) le.
Security, Visibility, and Reliability
You have the option of setting the iTap Port Aggregator so that it will not display
data on the LCD and you can turn off the Management Port, thus preventing it
from being accessed from the network. The Monitor Ports can also be turned off to
prevent unauthorized access to the network link. The monitoring device connected
to the iTap Port Aggregator sees all full-duplex trafc including Layer 1 and Layer
2 errors. Redundant power connections provide uptime protection.
Ease of Use
Display alternately shows link utilization, highest peak, and when the
highest peak occurred
LED indicators show redundant power, link status, and utilization alarm
IEEE 802.11b wireless communication optional
Fiber models feature SFP monitor ports for increased exibility
Silk-screened application diagram illustrates all connections for easy
deployment
All necessary network and monitor cables included
Optional 19-inch rack frames hold up to two iTaps
Tested and compatible with all major manufacturers’ monitoring devices, includ-
ing protocol analyzers, probes, and intrusion detection/prevention systems
Fully RoHS Compliant
Support
Net Optics offers free technical support throughout the lifetime of your pur-
chase. Our technical support team is available from 8 am to 5 pm Pacic Time,
Monday through Friday at +1 (408) 737-7777 and via email at ts-support@
netoptics.com. FAQs are also available on Net Optics' website at www.netoptics.
com.
•
•
•
•
•
•
•
•
•
•
iTap Dual Port Aggregator
4
Memory
All trafc that passes through the iTap is sent to the monitoring device NIC on
a rst-in-rst-out basis, including trafc that is temporarily stored in memory. If
two packets enter at the same time then one packet is processed while the other is
stored briey in memory, preventing collisions.
When there is a burst of data, trafc in excess of the NIC’s capacity is sent to the
iTap’s memory. Memory continues to ll until its capacity is reached, or the burst
ends, whichever comes rst. For controlling bursts, the iTap has 1GB (256MB on
GigaBit only models) of total memory.
In both cases, the iTap applies a rst-in-rst-out procedure, processing stored data
before new data from the link. If memory lls before the burst ends, the memory
stays lled as the stored data is processed – data that leaves the buffer is immedi-
ately replaced. If the burst ends before the memory lls, memory clears until the
full memory capacity is available, or until another burst in excess of the NIC’s
capacity requires additional memory.
The following diagrams illustrate a simple example of a 1000 Mbps NIC mov-
ing from 80% utilization to 140% utilization, then back to 80% utilization. In this
example, Side A begins as 300 Mbps and Side B is at 500 Mbps, The aggregated
trafc is 800 Mbps, well below the capacity of the 1000 Mbps NIC.
Figure 1: Side A plus Side B is less or equal to 100% of the NIC’s receive capacity
Each using a single NIC,
the monitoring devices
both receive all combined
traffic from Side A and
Side B, including physical
layer errors.
1
FirewallRouter
Monitoring
Device 1
iTap GigaBit Dual
Port Aggregator
Monitoring
Device 2
Side B
Side A
Side A +
Side B
B1 2
A
www.netoptics.com
®
RESET
Network
Monitor
1
2
B
A
Dual Port Aggregator
GigaBit Copper
TM
LINKACT LINKACT LINKACT LINKACT
iTap Dual Port Aggregator
5
The NIC receives 800 Mbps (80% utilization), so no memory is required for the
monitoring device's NIC to process all full-duplex trafc.
If there is burst of trafc on Side A of 900 Mbps and Side B remains at 500 Mbps,
the aggregated trafc equals 1400 Mbps, 400 Mbps over the capacity of the NIC.
The excess trafc is put in memory on a rst-in-rst-out basis until either the buf-
fer is full or the burst passes.
Figure 2: Side A plus Side B becomes greater than 100% of the NIC’s receive
capacity
After the burst has passed and the buffers have passed all the stored trafc, each
monitoring device resumes receiving trafc directly from the link.
Note: ____________________________________________________________________
Utilization statistics and alarms are monitored before buffering and aggregation.
__________________________________________________________________________
FirewallRouter
Monitoring
Device 1
iTap GigaBit Dual
Port Aggregator Tap
Monitoring
Device 2
Side B
Side A
Side A +
Side B
The extra 400 Mbps of traffic
is stored in buffer memory.
Memory continues to fill until
capacity is reached, or the
burst ends.
2
Memory
B1 2
A
www.netoptics.com
®
RESET
Network
Monitor
1
2
B
A
Dual Port Aggregator
GigaBit Copper
TM
LINKACT LINKACT LINKACT LINKACT
iTap Dual Port Aggregator
6
Unpacking and Inspection
Carefully unpack the iTap GigaBit Dual Port Aggregator and check for damaged or
missing parts. The iTap ships with the following:
iTap GigaBit Dual Port Aggregator
Two power supplies with cords
iTap Dual Port Aggregator User Guide
iTap Software CD
Pads for surface mounting
Network and monitor cables
RS232 DB-9 cable for use with the Command Line Interface
You may have also ordered a one rack unit panel for rack mounting the iTap
GigaBit Port Aggregator and an extended warranty. Carefully check the packing
slip against parts received.
If any part is missing or damaged, contact Net Optics' Customer Service immedi-
ately.
•
•
•
•
•
•
•
Part Number Description
ITP-PAD-CU3 iTap 10/100/1000 Dual Port Aggregator
ITP-PAD-GCU iTap GigaBit Dual Port Aggregator
ITP-PAD-SX5-SFP iTap GigaBit Fiber Dual Port Aggregator with SFP
ITP-PAD-LX5-SFP iTap GigaBit Fiber Dual Port Aggregator with SFP
(singlemode)
Available Models
iTap Dual Port Aggregator
7
Chapter 2
Installing the iTap
Overview
This chapter describes how to install and connect the iTap GigaBit Dual Port
Aggregator. The procedure for installing the iTap follows these basic steps:
Plan the installation
Congure iTap parameters
Mount the iTap
Connect the Management Port
Connect iTap to the network
Installing the SFP monitor ports (Fiber Model)
Connect iTap to the monitoring device(s)
Apply power to the iTap
Check the installation
After the iTap is installed, you can remotely monitor and control the iTap from
Web Manager or System Manager.
iTap Physical Features
Figures 3, 4 and 5 show the front panels of the ber and copper versions of the
iTap GigaBit Dual Port Aggregator. Figure 6 shows the rear panel of both models.
Figure 3 : ITP-PAD-SX-SFP Front Panel Features
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iTap Dual Port Aggregator
8
Figure 4: ITP-PAD-GCU Features
Figure 5: ITP-PAD-CU3 Features
Figure 6: Rear panel features
iTap Dual Port Aggregator
9
iTap Port Aggregator LEDs
Link Indicators: If a good link is established, the LED illuminates a steady
green.
Activity Indicators: If there is current activity on this link, the LED ashes.
Utilization Alarms A and B: These LEDs illuminate red when the threshold
utilization level exceeds the set threshold level. The Utilization Alarm LEDs
remain illuminated until reset with the Reset button or remotely reset via Web
Manager or System Manager.
PWR 1/ PWR 2: Main and Redundant Power. If the iTap is deployed with
both power supplies, both LEDs illuminate when the iTap is connected to
power. An off power LED indicates that the corresponding power supply is
not functioning or not connected.
Changing the SFP Monitor Port Connector
You have the option to change the interface on the Monitor Port by changing
the small form-factor plug (SFP) on the Monitor Port. You can order conver-
sion kits which include the singlemode ber, multimode ber, GigaBit copper
SFP and appropriate cable from Net Optics. For ordering information, see
Specications on page 42.
To change the SFP:
1. Turn off power to unit.
2. Remove the cable from the SFP on the Port Aggregator Tap.
3. Lower the wire clip to release the SFP connector.
4. With the clip on the lowered position, pull gently on the clip to free the
SFP.
5. Insert the new SFP until you hear it click into place.
6. Connect the cable supplied with the kit.
7. Power on unit.
iTap Dual Port Aggregator
10
Planning the Installation
Before you begin the installation of your iTap, you should determine the following
information:
IP address of the iTap or, if you are deploying multiple iTaps, a range of
IP addresses.
Net Mask for the iTaps.
IP address of the remote management console, if deployed over a WAN.
Gateway to the remote management console, if deployed over a WAN.
Also make sure you have a suitable location to install the iTap(s). For maximum
power redundancy, use two independent power sources.
Net Optics Equipment Rack Installation Instructions
The following precautions should be observed when installing Net Optics
products in a rack mount conguration.
Elevated Operating Ambient Temperature
If a Net Optics device is installed in a closed or a multi-rack assembly, the operat-
ing ambient temperature of the rack environment may be greater than the operating
ambient temperature of the room.
Air Flow
Installation of a device in a rack must provide sufcient air ow for the safe opera-
tion of the device.
Mechanical Loading
Mounting the device in a rack must be achieved in a manner that prevents uneven
mechanical loading.
Circuit Overload
Equipment must be connected to a device with caution, due to the effect that over-
loading circuits may have on over current protection and supply wiring.
Reliable Grounding
Rack-mounted equipment must be grounded. Particular attention must be made to
connections such as power bars and other indirect connections the branch circuit.
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iTap Dual Port Aggregator
11
Conguring the iTap
The iTap is congured with default values that allow you to install the iTap and
then modify parameters from Web Manager or System Manager.
The defaults values are:
IP Address: 10.60.0.123
Netmask: 255.255.0.0
Threshold Port A: 50%
Threshold Port B: 50%
Port A: Gigabit
Port B: Gigabit
CLI username: netoptics
CLI password: netoptics
You can set all parameters, check status, and view statistics from the Command
Line Interface. You can change most settings later from one of the remote inter-
faces (for more information on remote interfaces, see Chapters 4 and 5).
Using the Command Line Interface (CLI)
All conguration options, status, and statistics are accessible from the iTap's
Command Line Interface. You must set a new username and password, IP address
for the iTap, utilization threshold levels for Port A and B, and the current date and
time. Other parameters are optional and dependent on your installation.
For security reasons, some parameters can only be set with the CLI.
Figure 7: Login and Password Prompts
Use these commands to:
Set CLI username and password
Enable or disable the remote interfaces and display
Turn character echo to the terminal emulation software on or off
You will nd a complete list of CLI commands in Appendix B.
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Net Optics iTap Port Aggregator User manual

Net Optics
Brand
Net Optics
Model
iTap Port Aggregator
Type
User manual
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