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User Guide
10GigaBit iBypass Switch with Heartbeat™
Doc. PUBIBPOHBSRXFPU Rev. 1, 7/07
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PLEASE READ THESE LEGAL NOTICES CAREFULLY.
By using a Net Optics iBypass Switch 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
© 2007 by Net Optics, Inc. Net Optics® is a registered trademark of Net Optics, Inc. iBypassTM is a
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 specications 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.
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Contents
Chapter 1
Introduction
About this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Bypass Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Chapter 2
Installing the iBypass Switch
Plan the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Unpack and Inspect the iBypass Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installing the XFP Monitor Port Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Rack Mount the iBypass Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Connect Power to the iBypass Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect the iBypass Switch Command Line Interface (CLI) . . . . . . . . . . . . . . . . .8
Congure the iBypass Switch with the CLI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Connect the iBypass Switch to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Connect the Management Port to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Connect a Monitoring Device to the iBypass Switch . . . . . . . . . . . . . . . . . . . . . . .15
Check the iBypass Switch Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Chapter 3
Front Panel
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Utilization Alarm LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Link LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Power LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Chapter 4
iBypass Switch Web Manager
Access Web Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Check or Change the Heartbeat Packet from Web Manager. . . . . . . . . . . . . . . . . . 24
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Chapter 5
System Manager
Install System Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Explore System Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Create a System Manager Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Delete a System Manager Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Add Devices to a System Manager Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Delete an iBypass Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Congure an iBypass Switch from System Manager . . . . . . . . . . . . . . . . . . . . . . . 34
View iBypass Switch Information from System Manager . . . . . . . . . . . . . . . . . . .37
Modify an iBypass Switch Name or Address from System Manager . . . . . . . . . . 43
Change a Heartbeat Packet from System Manager . . . . . . . . . . . . . . . . . . . . . . . . .44
Appendix A
Specications and Models
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Appendix B
Command Line Interface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
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Chapter 1
Introduction
Thank you for choosing Net Optics 10 GigaBit iBypass Switch, the most versatile
intelligent Bypass Switch available today. This guide is designed to help answer
your questions and provide an installation reference.
Net Optics iBypass Switch with Heartbeat provides a permanent access port for inline network security and monitoring. The iBypass Switch automatically switches
network trafc through added devices, or bypasses devices that are removed. The
intelligent iBypass Switch Heartbeat provides notications to protect network
trafc against both signal and power loss on an attached device.
About this Guide
This guide describes the installation and use of the following models:
Part Number Description
IBPO-HBSR-XFP GigaBit SR iBypass Switch with Heartbeat
IBPO-HBLR-XFP GigaBit LR iBypass Switch with Heartbeat
IBPO-HB50SR-XFP GigaBit SR iBypass Switch with Heartbeat, 50um
Features
Heartbeat Packet
The iBypass Switch monitors the attached device by sending a Heartbeat packet to
the device. If the iBypass Switch does not receive the Heartbeat response, it auto-
matically switches network trafc to bypass the unresponsive device—even if the
device is still receiving power. The iBypass continues to send the Heartbeat, and
will restore trafc ow through the device as soon as the link is restored.
Uninterrupted Trafc
This iBypass Switch supports fail-open monitoring with any 10 GigaBit device
when it shares the same power source as the device. As long as the iBypass Switch
is receiving power, it will divert network trafc to attached monitoring devices.
In this state, all trafc is routed directly to the monitoring device connected to the
iBypass Switch.
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When the iBypass Switch loses power, trafc continues to ow through the
network link, but is no longer routed through the iBypass Switch. This allows
network devices to be removed and replaced without network downtime. Once
power is restored to the iBypass Switch, network trafc is seamlessly diverted to
the monitoring device, allowing it to resume its critical functions.
Simply Plug It In
10 GigaBit iBypass Switches use XFP transceivers; the port kit includes the cables
you need to establish a secure network connection point for inline devices, and the
cable to connect monitoring devices. For special applications, you may customize
the Heartbeat Packet rate from the iBypass CLI (Command Line Interface).
Bypass Detect
You can set the Monitor Ports to cycle on and off while the iBypass Switch is in
bypass mode. In Bypass Detect mode, the monitor ports will cycle through ve
seconds off followed by fteen seconds on. The alternating link status can be used
to trigger attached devices to send an alarm to a management system every time
the iBypass Switch turns off the monitor ports. When the iBypass Switch returns
to bypass disabled mode, the monitor ports remain on and the on/off cycle is
discontinued.
Note ____________________________________________________________________
If XFP modules from other vendors are used with the iBypass Switch, Net Optics
cannot warranty the operation of the iBypass Switch with these modules.
__________________________________________________________________________
Passive, Secure Technology
Fail-open monitoring with any 10 GigaBit appliance at speeds of 10 Gbps
Protection against power, link, and application failure
XFP (10 Gigabit Small Form Factor Pluggable) transceivers
Increased reliability on critical network links
High-speed switching with minimal insertion loss
Custom Heartbeat packet option with congurable timeout (Heartbeat) and
Retry
Fully RoHS Compliant
Ease of Use
LED indicators show power, link, bypass and activity status
Front-mounted connectors support easy installation and operation
Optional 19-inch rack frame holds two iBypass Switches
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Compatible with all major manufacturers’ monitoring devices, including
protocol analyzers, probes, and intrusion detection/prevention systems
Support
Net Optics offers free technical support throughout the lifetime of your purchase.
Our technical support team is available from 8 am to 5 pm Pacic 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
Bypass Modes
The Bypass Switch with Heartbeat bypasses attached in-line device when one of
three events occurs:
Power loss to the switch
Link failure
Application failure
Two LEDs on the front of the iBypass Switch indicate whether the switch is
bypassing the connected appliance or not. When the Bypass ON and an indicator
is illuminated, the bypass switch has not received the heartbeat packet as expected
and is in bypass enabled mode. When the bypass OFF indicator is illuminated,
the bypass switch is in bypass disabled mode and is sending trafc through the
attached in-line device.
When the switch is in bypass enabled (ON) mode, the switch circuitry re-directs
network trafc around the in-line appliance. In bypass enabled mode Network
Ports A and B are connected (see below).
Figure 1: Bypass Mode (OFF)
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Switch
10 GigaBit
1
2
BYPASS
LINK
B
A
1
2
ON
OFF
B
A
1
2
OUT INOUT IN OUT IN OUT IN
RESET
Network
A B 1 2
Monitor
TX RX TX RX
TX RX TX RX
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When the switch is in bypass disabled (OFF) mode, the switch circuitry sends
network trafc through the in-line appliance. In bypass disabled mode, Network
Port A is connected to Monitor Port 1 and Network Port B is connected to Monitor
Port 2 (see below).
Figure 2: Bypass Mode (ON)
Power Loss Bypass
The iBypass Switch protects link integrity when the attached monitoring device
loses power. To install the iBypass Switch for this type of protection, the switch
should share the same power source as the monitoring appliance. If you are using
redundant power supplies for the bypass switch, make sure that both monitoring
devices are connected to the same power source as the iBypass device.
Heartbeat Bypass
The iBypass Switch with Heartbeat protects against both physical link failure
and application failure on the monitoring device. The bypass switch checks the
path through the montoring device by sending a packet at a predetermined rate
(for example, once every millisecond from Monitor Port 1). The iBypass Switch
validates the path when it receives the packet on the Monitor Port B. If the iBypass
Switch does not receive the packet as expected three times in a row, the bypass
switch will automatically enter bypass enabled (On) mode.You can use the CLI or
remote interfaces to change the number of the Heartbeat packets required (re-try
parameter 1-255) before the iBypass Switch enters bypass enabled mode. The
switch continues to send the bypass packet and will return to bypass disabled mode
when it receives three consecutive packets on Monitor Port 2.
1
2
BYPASS
LINK
B
A
1
2
ON
OFF
B
A
1
2
OUT INOUT IN OUT IN OUT IN
RESET
Network
A B 1 2
Monitor
TX RX TX RX
TX RX TX RX
Switch
10 GigaBit
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Chapter 2
Installing the 10 GigaBit
iBypass Switch
This chapter describes how to install and connect the iBypass Switch. The
procedure for installing the iBypass Switch follows these basic steps:
Plan the installation
Unpack and inspect the iBypass Switch
Install (XFP) Small Form-Factor Pluggable transceivers
Rack mount the iBypass Switch (optional)
Connect power to the iBypass Switch
Connect the CLI RS232 interface for conguration
Congure the iBypass Switch default values with the CLI
Connect the iBypass Switch to network devices
Connect the Management Port to the network
Connect iBypass Switch Ports to monitoring device(s)
Check the installation
After the iBypass Switch is installed, you can remotely monitor and control the
iBypass Switch from either Web Manager or System Manager.
Plan the Installation
Before you begin the installation of your iBypass Switch, determine the following:
IP address of the iBypass Switch or, if you are deploying multiple iBypass
Switches, a range of IP addresses
Net Mask for the iBypass Switch
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 iBypass Switch. For
power redundancy, use two independent power sources.
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Unpack and Inspect the iBypass Switch
Unpack the iBypass Switch, power supplies, and all cables that are provided. Each
iBypass Switch is delivered with the following:
2 Power supplies
2 LC ber cables
1 RJ45 CAT5e cable
1 DB-9 RS232 cable
Quick Installation Guide
CD that contains this manual and System Manager software
You may have also purchased a panel for rack mounting the bypass switch, and an
extended warranty. If any component is missing or damaged, contact Net Optics
Customer Service immediately at +1 (408) 737-7777.
Installing XFP Monitor Port Transceivers
The XFP transceivers are packaged seperately. You need to remove the temporary
plugs from the iBypass Switch monitor slots and insert the XFP connectors into the
monitor slots, as shown below, until they click into place.
1
2
BYPASS
LINK
B
A
1
2
ON
OFF
B
A
1
2
OUT INOUT IN OUT IN OUT IN
RESET
Network
A B 1 2
Monitor
Switch
10 GigaBit
Figure 3: Insert XFP Connectors in Monitor Slots
Rack Mount the iBypass Switch (optional)
The iBypass Switch is designed for rack mounting in a two-slot, 19-inch panel.
The mounting panel occupies one rack unit.
To rack mount the iBypass Switch:
1. Attach the two-slot panel to your equipment rack using the thumb screws on
the panel.
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2. Slide the iBypass Switch into one of the slots and secure the device by
tightening the thumb screws.
3. Make sure that the rack is properly grounded.
Connect Power to the iBypass Switch
For power fault protection, the iBypass Switch has redundant power supplies.
The second power supply is available to support the ow of trafc to the monitoring device in the event that the rst power supply becomes unavailable. If the
rst power supply is unavailable, the second power supply provides all power for
the iBypass Switch. Even if no power is available to the passive iBypass Switch,
network trafc ows uninterrupted.
Management
Port
RS232
Figure 4: Connecting dual power supplies
Connect the power supplies to the back of the unit. If you plan to use redundant
power, make sure that you connect the power supplies to two separate, independent
power sources. The unit should now have one or both front panel Power LEDs illuminated, depending on whether you used one power cable or two.
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Connecting to the CLI Interface
All conguration options, status, and statistics are accessible from the iBypass
Switch Command Line Interface. You will set a new username and password, IP
address for the iBypass Switch, utilization threshold levels for Port A and B, and
the current date and time. Other parameters are optional and dependent on your
installation. To do this conguration, you need to connect an RS232 DB9 cable to
the back of the iBypass Switch and to your computer.
To computer with
terminal emulation software
Management
Port
RS232
Figure 5: RS232 DB-9 connecting to computer
Your computer needs to have terminal emulation software such as HyperTerminal
to access the iBypass Switch CLI via the RS232 cable..
To connect the CLI:
1. Connect a PC with terminal emulation software, such as HyperTerminal, to the
iBypass Switch using the RS232 DB-9 cable supplied with the iBypass Switch.
2. Launch the terminal emulation software and set communication parameters to:
19200 baud
8 data bits
No parity
1 stop bit
Noowcontrol
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3. Power on the iBypass Switch. The Net Optics CLI banner and login prompt
appear in the Terminal Emulation software (see below). The login default is
netoptics.
4. Enter the password. The default password is netoptics.
Congure the iBypass Switch with the CLI
You should be logged into the iBypass CLI using terminal emulation software.
If you are not, see the instructions on the previous page.
The default values for this IBypass Switch are:
Management Port: Enabled
IP Address: 192.168.2.100
Netmask: 255.255.0.0
Threshold Port A: 50%
Threshold Port B: 50%
Threshold Port 1: 50%
Threshold Port 2: 50%
Username: netoptics
Password: netoptics
For security reasons, some parameters can only be set with the CLI. A complete
list of CLI commands is in Appendix B.You will use the CLI now to:
Change the login and password
Assign a new IP address
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Change utilization thresholds
Set the date and time
Display and check the CLI settings
Disable and enable the Management Port
Your terminal emulator should be displaying the Net Optics prompt shown below.
If it does not, follow the directions on the previous page.
NetOptics:
You can change most settings later from one of the remote manager interfaces (for
more information about remote interfaces, see Chapters 4 and 5).
Change the iBypass Switch Username and Password
1. Change the username by entering the following command:
set username <new username>
2. Change the password by entering the following command:
set password <new password>
3. Record the username and password in a secure location.
Assign a New iBypass Switch IP Address
Be sure that you have the correct new IP address for the iBypass Switch before you
change the IP address value from the default 10.60.0.123. To change it:
Enter set ip <new ip address>.
Example: Enter set ip 10.60.10.100 to set the iBypass Switch IP address to
10.60.10.100.
Change Port Utilization Threshold Levels
1. Enter setthresholdporta
<new level> to set a percentage of available band-
width for Port A. Exceeding this limit will trigger the alarm.
Example: Enter setthresholdporta30 to set the alarm threshold level for
trafc received on Port A to 30%.
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2. Enter setthresholdportb<new level> to set a percentage of available band-
width for Port B. (Exceeding this limit will trigger the alarm.)
Example: Enter setthresholdportb30 to set the alarm threshold level for
trafc received on Port B to 30%.
Set the Current Date and Time
Enter set time <mm/dd/yyyy-hh:mm:ss> where mm is month, dd is day of the
month, yyyy is year, hh is hour, mm is minutes of the hour, and ss is seconds.
Time is based on the 24-hour clock.
Display and Check Current Settings
Enter show set.
The CLI displays the current setting, similar to the example below.
Figure 8: Show Set command example
Using the CLI Help Command
1. Enter
Help at the NetOptics prompt. The list of help topics is displayed.
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Figure 9: iBypass Switch CLI Help Menu
2. To view the syntax for changing the iBypass Switch conguration parameters,
enter helpset.
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3. Repeat with the variable of interest to view the syntax for all commands
available from the CLI. For more information about CLI commands, see
Appendix B.
Do not disconnect the DB9 cable yet from the RS232 port. You will use it once more
to turn the iBypass Switch display on and off.
Connect the iBypass Switch to the Network
To connect the iBypass Switch to the network:
1. Connect Network Port A to the appropriate switch, server or router using an LC
type ber cable.
Figure 10: Connect the iBypass Switch to the Network
2. Connect Network Port B to the appropriate switch, server or router using an LC
type ber cable.
To Switch, Server, or Router (DCE)
To Switch, Server, or Router (DTE)
1
2
BYPASS
LINK
B
A
1
2 ON
OFF
B
A
1
2
OUT INOUT IN OUT IN OUT IN
RESET
Network
A B 1 2
Monitor
Switch
10 GigaBit
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Connect the Management Port to the Network
To use either of the remote interfaces you must connect the Management Port on the
back of the unit to the network.
To connect the Management Port:
1. Connect a CAT5 cable to the Management Port as shown in the following gure.
Figure 11: Connecting the Management Port
2. Connect the other end to a network switch or hub.
Disable, Enable and Check the Management Port
The CLI display command toggles the display on and off. From the terminal
emulation software, do the following:
1. Enter showdisplay
to view the current setting. The default value is ON.
2.
Enter display. Now look at he front of the iBypass Switch. Access from the
Management Port is blocked and the iBypass Switch front panel does not display
utilization or peak information.
3. Enter display again to restore the display and remote interfaces.
To network switch or hub
Management
Port
RS232
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Connect a Monitoring Device to the iBypass Switch
The iBypass Switch is delivered with two monitor cables for monitoring device
installation. Connect the cables to the monitoring device.
1. Connect Monitor Port 1 to the appropriate port on the monitoring device using
the LC type ber cable.
2. Connect Monitor Port 2 to the appropriate port on the monitoring device using
the LC type ber cable.
Figure 12: Connecting the Monitoring Devices
1
2
BYPASS
LINK
B
A
1
2 ON
OFF
B
A
1
2
OUT INOUT IN OUT IN OUT IN
RESET
Network
A B 1 2
Monitor
To Monitoring Device
To Monitoring Device
Switch
10 GigaBit
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Check the Installation
You have connected the iBypass Switch to the network, to the monitoring device and
to power. It should be functioning correctly now. Check the status of the following:
Check that at least one power LED is illuminated.
Check the link status LEDs located on the front panel to verify that trafc is pass-
ing through the switch.
Check the display for utilization and peak information.
Verify that the monitoring device is receiving trafc from the iBypass Switch.
Verify that the Management Port is functional by typing the iBypass Switch's
IP address in your Web browser. Net Optics' Web Manager should appear. If it
does not, check the Management Port cables and connections and verify that the
Display option in the CLI is set to ON.
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Chapter 3
Front Panel
The utilization data on the display is refreshed every second. Network peaks are
given as a percent of utilization and reect the highest peak recorded since the last
reset. The day and time information reects the highest peak event since reset. You
can set the iBypass Switch 24-hour clock through the CLI or by using the remote
manager interfaces.
Figure 13: Front Panel of a 10 GigaBit iBypass Switch
Forexample:
If you set the thresholds for 30% utilization on Friday and over the weekend
six peaks over 30% occur, the iBypass Switch provides information only on the
highest peak.
If data is not displaying as expected, check the Network Port connectors for link
status and activity. Also check the status of the display command using the CLI
(see Using the Command Line Interface in chapter 2).
Utilization Alarm LEDs
Four LEDs indicate that utilization levels have exceeded the threshold. There is
one LED for incoming trafc on the front panel. When a Utilization Alarm LED
is red, it indicates that the threshold level was exceeded for that port since the
last reset. The LEDs remain illuminated until reset via the reset button or remote
interfaces.
Threshold
Alarms
Bypass
Mode
Power
Reset
Link
Display
1
2
BYPASS
LINK
B
A
1
2 ON
OFF
B
A
1
2
OUT INOUT IN OUT IN OUT IN
RESET
Network
A B 1 2
Monitor
XFP Slots
Switch
10 GigaBit
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Link LEDs
Four LEDs indicate link status. If a good link is established, the LED illuminates a
steady green. If there is no current activity on this link, the LED ashes.
Power LEDs
If the iBypass Switch is deployed with both power supplies, both power LEDs
will illuminate when connected to power. If a power LED is off, the corresponding
power supply is not functioning or connected.
Reset Button
Press the Reset button to reset the trafc peak and time on the display and the
Utilization Alarm LEDs. To prevent accidental resets, the Reset button is recessed
from the front panel. To push the Reset button, use a thin, rigid tool such as an
unbent paperclip.
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Chapter 4
Web Manager
This chapter describes how to monitor and control individual iBypass Switches
using Web Manager. The following topics are covered:
Accessing Web Manager
Viewing iBypass Switch Status
Controlling iBypass Switch Connections
Using the iBypass Switch Web Manager
The Web Manager browser-based interface allows you to change conguration
settings, view status, and to control which Network ports are connected to the
monitoring devices.
Note: ____________________________________________________________________
To access Web Manager, Display must be set to ON from the CLI. For more information, see Using the Command Line Interface in Chapter 2.
__________________________________________________________________________
Access Web Manager
Web Manager is a browser-based interface that provides access to any iBypass
Switch with an IP address. Web Manager supports all common browsers.
To access Web Manager:
1. Open an Internet browser on your computer.
2. Enter the iBypass Switch IP address in the URL. The default IP address is
192.168.2.100. Web Manager displays, as shown in the following gure.
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Figure 14: Web Manager Window
3. Change any available elds. The following table describes the elds on the Web
Manager window.
Field Name Description
Bypass System Status
Bypass Status Indicates the current status of the iBypass, UP or DOWN.
Port A Link Status Indicates the current status of the Port A Link, UP or DOWN.
Port 1 Link Status Indicates the current status of the Port 1 Link, UP or DOWN
Port A Port Speed Indicates the speed for Port A, 10 Gigabit
Port 1 Port Speed Indicates the speed for Port 1, 10 Gigabit.
Power Supply 1
Status
Indicates whether power is , ON or OFF for this power supply.
Bypass State Indicates the bypass state, ON or OFF
Bypass Model Indicates the iBypass model number.
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10 GigaBit iBypass Switch with Heartbeat
21
Field Name Description
Port B Link Status Indicates the current status of the Port B Link, UP or DOWN.
Port 2 Link Status Indicates the current status of the Port 2 Link, UP or DOWN.
Port B Port Speed Indicates the speed for Port B, 10 Gigabit..
Port 2 Port Speed Indicates the speed for Port 2, 10 Gigabit.
Power Supply 2
Status
Indicates whether or not power is On for this power supply
ON or OFF.
Check HB Packet
(BUTTON)
Click to display the Heartbeat Packet window.
Bypass Port A/ Port 1 Statistics
Port A/Port 1 Peak
Rate
Peak trafc rate on Port A/Port 1.
Port A/Port 1 Peak
Date and Time
Time of the peak trafc, formatted as:
mm/dd/yyyy hh:mm:ss
Port A/Port 1
Current Utilization
Rate %
The current utilization rate on Port A/Port 1.
Port A/Port 1 Total
Packets
The total number of packets traversing this port since the
last device reset.
Port A/Port 1 Total
Bytes
The total number of bytes traversing this port since the last
device reset.
Port A/Port 1 CRC
Errors
The number of Cyclical Redundancy Check errors on this
port since the last device reset.
Port A/Port 1 Oversize Packets
The total number of oversize packets traversing this port
since the last device reset.
Bypass Port B/Port 2 Statistics
Port B/Port 2 Peak
Rate
Peak trafc rate on Port B/Port 2.
Port B/Port 2 Peak
Date and Time
Time of the peak trafc, formatted as:
mm/dd/yyyy hh:mm:ss
Port B/Port 2
Current Utilization
Rate %
The current utilization rate on Port B/Port 2.
Port B/Port 2 Total
Packets
The total number of packets traversing this port since the
last device reset.
Port B/Port 2 Total
Bytes
The total number of bytes traversing this port since the last
device reset.
Port B/Port 2 CRC
Errors
The number of Cyclical Redundancy Check errors on this
port since the last device reset.
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10 GigaBit iBypass Switch with Heartbeat
22
Field Name Description
Port B/Port 2 Over
-
size Packets
The total number of oversize packets traversing this port
since the last device reset.
Bypass Conguration
IP Address IP Address for the iBypass Switch nnn.nnn.nnn.nnn.
Net Mask Netmask for iBypass Switch subnet nnn.nnn.nnn.nnn.
Manager IP
Address
IP Address for the SNMP Manager nnn.nnn.nnn.nnn.
Gateway IP
Address
IP Address for the default Gateway nnn.nnn.nnn.nnn.
Set Port
Parameters
(BUTTON)
Select to display a Port Setting window.
Edit HB Packet
(BUTTON)
Select to display an Edit Heartbeat window. See the Check
and Edit HB Packet Window section of this chapter for
details about using the window.
Port A/Port
B Utilization
Threshold (%)
Percent utilization of Port A or Port B.
Port 1/Port
2 Utilization
Threshold (%)
Percent utilization of Port 1 or Port 2.
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10 GigaBit iBypass Switch with Heartbeat
23
Field Name Description
Reset Port A/Port
B Peak Rate
Reset (toggle Yes/No) the rate of peak usage. The Peak
Rate is a trafc measurement during peak time. The Net
Optics iBypass Web Manager will capture the highest
peak rate and time, and then display them in the Statistics
section.
Assume that these peaks occurred:
8:00 AM = 1%;
9:00 AM = 2%;
10:00 AM = 50%;
11:00 AM = 15%;
12:00 AM = 20%;
1:00 PM = 30%;
2:00 PM = 40%;
3:00 PM = 30%;
4:00 PM = 20%;
5:00 PM = 60%.
In the Status window, at 10 AM, 50% was the Peak Rate
and the display remained that way until 5 PM if no reset was
done. If a reset was done at 11 AM, then the Peak Rate
changed to 20% at noon, then 30% at 3 PM, then 40% at 2
PM, and then 60% at 5 PM.
Reset Port A/Port
B Statistics
Reset (toggle YES/NO) the statistics.
Reset Port 1/Port 2
Statistics
Reset (toggle YES/NO) the statistics.
Enable LFD Enable/Disable Link Fault Detection.
Heartbeat Timeout
Period(s)
Type a number to indicate the frequency of heartbeat
packets sent in milliseconds (0-100)
Enable/Disable
Detection
Turns automatic port detection ON and OFF.
Heartbeat Retries Type a number to indicate the number of retries before
Heartbeat fails.
Set Date and Time Displays a window where you can set the date and time
(24-hour clock).
4. Save changes to the iBypass Switch by clicking Submit Changes at the bottom
of the page.
5. To update the display, click your browser's refresh button.
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10 GigaBit iBypass Switch with Heartbeat
24
Check/Change the Heartbeat Packet from Web Manager
Use the Heartbeat window to view hexadecimal information about the current
Heartbeat packet or to edit the Net Optics Heartbeat packet and create your own
customized Heartbeat packets (one for each monitored device). You can do this
from Web Manager or System Manager.
From Web Manager, do the following to view or change the heartbeat packet:
Figure 15: Web Manager
1. Click Check HB Packet on the Web Manager main window.
You see the Heartbeat Packet window shown next.
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10 GigaBit iBypass Switch with Heartbeat
25
Figure 16: Heartbeat Packet Window
2. Change the hexadecimal values; be sure to adhere to IP address and MAC
address conventions.
3. Click Submit the Packet to save the changes.
4. Click Go Back to Main Menu to return to the main Web Manager window.
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10 GigaBit iBypass Switch with Heartbeat
26
Chapter 5
System Manager
Overview
This chapter describes how to install and use the Net Optics System Manager. Use
the System Manager to change system settings, to view system status, and retrieve
data from congured Net Optics iBypass Switch devices. The following topics are
covered:
Install System Manager
Explore System Manager
Create a Sytem Manager Group
Delete a Sytem Manager Group
Add iBypass Switches to a Group
Delete an iBypass Switch
Congure an iBypass Switch
View iBypass Switch Information
Change a Heartbeat Packet from System Manager
•
•
•
•
•
•
•
•
•
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10 GigaBit iBypass Switch with Heartbeat
27
Install System Manager
The executable installation le for System Manager is distributed on the CD
included with the iBypass Switch.
ToinstallSystemManger:
1. Locate
Setup.exe on the CD and double click it.
The License Agreement dialog box appears as shown below.
Figure 17: Net Optics System Manager License Agreement
2. After reading the agreement, select I Agree and click Next to install System
Manager. The Welcome dialog appears.
3. Click
Next. The Select Installation Folder dialog box appears.
4. To install in the default folder, select the default path in the Folder: text box.
To install in a different location, either type the path in the Folder: text box or
click Browse to nd another location.
5. To check the space available for System Manager on the selected drive, click
Disk Cost.
6. To limit access to System Manager to the current user of the PC, select
Just
Me. To allow access to any user logged into the PC, select Everyone.
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10 GigaBit iBypass Switch with Heartbeat
28
7. Click Next.
The Conrm Installation dialog displays.
8. Click Next to continue with the installation. The Progress dialog displays.
To stop the installation, click
Cancel. When the installation is complete, the
Installation Complete dialog box appears, as shown in the following gure.
9. Click Close. System Manager is now installed on your computer and a
Net Optics shortcut icon has been placed onto your desktop.
Explore System Manager
This section explains the features and functions of System Manager. With System
Manager you can:
Create iBypass Switch groups
Add and delete iBypass Switches from the system
Remotely congure iBypass Switches
View trafc utilization and peaks
View trafc statistics
NOTE ___________________________________________________________________
In order to access an iBypass Switch with System Manager, the Display option
must be set to ON in the CLI. For more information, see Using the Command Line
Interface in Chapter 2.
__________________________________________________________________________
To access System Manager:
1. Double-click the System Manager icon on your PC desktop.
The startup window is shown in the following gure.
•
•
•
•
•
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10 GigaBit iBypass Switch with Heartbeat
29
Figure 18: Initial System Manager window
A new System Manager does not yet show any Net Optics units. The System
Frame portion of the window displays iBypass Switches and Groups as you add
them to the system. The Information Frame portion of the window displays Sta-
tus, Conguration and Control information for the selected unit.
Tip! _____________________________________________________________________
To use pop-up menu shortcuts, click your right mouse button in the System Frame.
__________________________________________________________________________
Using the Toolbar
The following gure shows the System Manager toolbar.
Figure 19: Toolbar
The table below describes the icons found on the toolbar.
Tool Description
New Device Add devices to a group
New Group Create an iBypass Switch group
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10 GigaBit iBypass Switch with Heartbeat
30
Tool Description
Delete Delete devices from the system
Modify Change the device name, IP address, model, and add notes
Refresh Refresh the data display
Admin Change username/password
Exit Close Net Optics System Manager
About View information about System Manager
Create a System Manager Group
Organize iBypass Switches or other Net Optics devices into groups for quick access. Devices must belong to a group. If you add an iBypass switch when there is
no group, a group is created automatically.
To create an iBypass Switch group:
1. Click
New Group in the toolbar.
A new group bar appears in the System Frame as shown in the following gure.
Figure 20: New Group
2. Either accept the default group name or edit it by typing the new name and
pressing Enter.
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10 GigaBit iBypass Switch with Heartbeat
31
Delete a System Manager Group
You can delete a group; however, all devices within that group will also be deleted
from System Manager.
Note: ____________________________________________________________________
Deleting an iBypass Switch from System Manager does not affect the current
operating status of the iBypass Switch. The iBypass Switch continues to pass trafc
from the Network ports to the Monitor Ports. However, you will not have visibillty
from System Manager unless it is added back in.
__________________________________________________________________________
Todeleteagroup:
1. Right-click the group that you want to delete.
2. Select
Delete from the pop-up menu.
The group and all associated devices are deleted from System Manager.
Add Devices to a System Manager Group
To congure and control iBypass Switches with System Manager, you must add
each iBypass Switch to a group. Once you have added an iBypass Switch, you can
congure, modify, and delete it from System Manager.
Note: ____________________________________________________________________
The iBypass Switch must be connected to the network as described in Chapter 2
before it can be added to System Manager.
__________________________________________________________________________
To add an iBypass Switch to the system:
1. Select the group where the iBypass Switch will be added.
2. Click
New Device in the toolbar. The New Device dialog box appears (see next
gure).
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10 GigaBit iBypass Switch with Heartbeat
32
Figure 21: Adding a New iBypass Switch to a Group
3. Enter a name for the iBypass Switch in the Node Name text box. Each Node
Name in the system must be unique.
4. Enter the IP address of the iBypass Switch in the
IP Address text box. The IP
address must be unique on the network.
5. Enter any relevant information about the iBypass Switch in the
Notes text box.
6. Check your settings and click
Create.
The System Manager now shows the iBypass Switch in the system (see the next
gure).
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10 GigaBit iBypass Switch with Heartbeat
33
Figure 22: Net Optics System Manager with iBypass Switch
The indicator to the right of the iBypass Switch picture blinks green when the
iBypass Switch is functioning normally. If there is an alarm condition on the iBypass
Switch, the indicator blinks red. If System Manager cannot communicate with the
iBypass Switch, the switch graphic is grayed. Check that the iBypass Switch is con-
nected to the network and verify the conguration information.
Repeat Steps 1-6 for each iBypass Switch you are adding to System Manager.
Tip! _____________________________________________________________________
To change the display order of iBypass Switches, click and drag them into the desired order.
__________________________________________________________________________
Delete an iBypass Switch from System Manager
You can delete an iBypass Switch from System Manager when you remove an iBypass Switch from your network. If you have removed an iBypass Switch from the
network, System Manager continues to poll the iBypass Switch IP address for data
until you delete the iBypass Switch from System Manager.
TodeleteaniBypassSwitchfromSystemManager:
1. Select the device you want to delete by clicking its icon.
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10 GigaBit iBypass Switch with Heartbeat
34
2. Click Delete in the toolbar.
A conrmation dialog box appears.
3. Click
Yes to delete the iBypass Switch from System Manager.
Congure an iBypass Switch from System Manager
Set the conguration parameters of an added iBypass Switch from the Congure
tab.
TocongureaniBypassSwitch:
1. Click the icon of the iBypass Switch you want to congure.
2. Click the Congure tab.
Figure 23: iBypass Switch Congure Tab
2. Click the value eld for the parameter you want to congure.
3. Select an option from the drop-down list or enter a new value from your
keyboard.
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10 GigaBit iBypass Switch with Heartbeat
35
The following table describes the iBypass Switch options on the Congure Tab.
Field Name Description
IP Address IP address of the iBypass Switch; the default IP address is
10.60.0.123. Change the IP address by typing a new one
in the box.
Netmask IP address of the netmask; the default netmask address
is 255.255.0.0. Change the netmask address by typing a
new one in the box.
System Manager IP
Address
IP address of either the host PC running System Manager
over a WAN or the third-party SNMP management tool.
Change the IP address by typing a new one in the box.
Gateway IP Address IP address of the current WAN gateway. Change the
gateway address by typing a new one in the box.
Port Enable ENABLE/DISABLE the monitor port.
Port A Utilization
Threshold
Percentage level at which this port use triggers an alarm;
as default the Port A alarm is triggered when Port A exceeds 50% utilization.
Port B Utilization
Threshold
Percentage level at which this port use triggers an alarm;
as default the Port B alarm is triggered when Port B exceeds 50% utilization.
Port 1 Utilization
Threshold
Percentage level at which this port use triggers an alarm;
as default the Port 1 alarm is triggered when Port 1 exceeds 50% utilization.
Port 2 Utilization
Threshold
Percentage level at which this port use triggers an alarm;
as default the Port 2 alarm is triggered when Port 2 exceeds 50% utilization.
Reset Port A Peak
Rate
This value is NO unless you change it to YES. If you set
it to YES, as soon as the port reset is complete, it returns
to NO.
Reset Port B Peak
Rate
This value is NO unless you change it to YES. If you set
it to YES, as soon as the port reset is complete, it returns
to NO.
Reset Port 1 Peak
Rate
This value is NO unless you change it to YES. If you set
it to YES, as soon as the port reset is complete, it returns
to NO.
Reset Port 2 Peak
Rate
This value is NO unless you change it to YES. If you set
it to YES, as soon as the port reset is complete, it returns
to NO.
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10 GigaBit iBypass Switch with Heartbeat
36
Field Name Description
Reset Port A Statistics
This value is NO unless you change it to YES. If you set
it to YES, as soon as the port reset is complete, it returns
to NO.
Reset Port B Statistics
This value is NO unless you change it to YES. If you set
it to YES, as soon as the port reset is complete, it returns
to NO.
Reset Port 1 Statistics
This value is NO unless you change it to YES. If you set
it to YES, as soon as the port reset is complete, it returns
to NO.
Reset Port 2 Sta
-
tistics
This value is NO unless you change it to YES. If you set
it to YES, as soon as the port reset is complete, it returns
to NO.
Current Date & Time Click the existing date and adjust it with the up and down
arrows.
Link Fault Detect OFF
Bypass Detect
We recommmend that you leave this OFF. If Bypass
Detect is ON and a monitoring device fails, the link is
forced into a link state change every 10 - 15 seconds.
Heartbeat Timeout
Period(s)
Number of milliseconds between Heartbeat Packets sent
from the iBypass unit to a connected monitoring device.
The default is 1 second.
Heartbeat Retries Number of heartbeats that do not come back from a de-
vice before an iBypass unit stops sending trafc through
that monitoring device; the default is 3. Heartbeat packets
continue to be sent and if one comes back from the at-
tached device, trafc ow to the device resumes.
Transmit Heartbeat
Packet
View or change this heartbeat packet. The default is 00 05
c2 3c 60 00 00 50 c2 3c 60 01 08 00
The new conguration parameters take effect the next time System Manager polls
the iBypass Switch. If System Manager detects a change when it pools, a circled
arrow appears next to the value until the next polling.
View iBypass Switch Information from System Manager
System Manager allows you to view the current iBypass Switch conguration information, including the Monitor Port connections.
To view iBypass Switch information:
1. Click the image of the iBypass Switch you want to view in the System Frame.
The following information is displayed.
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10 GigaBit iBypass Switch with Heartbeat
37
Figure 24: iBypass Switch Status Tab
The Status tab is a read-only list of information from the iBypass Switch. Use the
scroll bar and arrows to view the entire list if necessary.
TIP! _____________________________________________________________________
Fields that have been updated since the last refresh display with a circle and arrow
just to the left of the value eld.
__________________________________________________________________________
The following table describes the status elds.
Field Description
System Status UP/DOWN
Bypass Model Fiber Heartbeat Bypass Model Number
Port Speed 10 GIGABIT
Power Supply 1, 2
OFF or ON
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10 GigaBit iBypass Switch with Heartbeat
38
Field Description
Heartbeat Packet Default Heartbeat packet which can be loaded using the
"reset defaults" command or you can congure it manually
using the CLI.
The CLI command is "set txpacket xx-xx-xx-xx-etc. The
txpacket
command must be a single line so it is a long long. If you
remove
all the carraige returns from the dta below you can use it to
congure the heart beat packet from the CLI.
The rst 12 bytes are the source/destination address
followed
by som bytes that dene the packet type. The payload bytes
are
all 0's and the last four bytes are the packet checksum
(CRC).
set txpacket
00-50-c2-3c-60-00- (source address)
00-50-c2-3c-60-01- (destination address)
81-37-ff-ff- (packet type)
00-30-00-0000-00-40-04ec-a2-c6-1301-02-c6-1301-01-00-0000-00-00-00- (payload bytes)
00-00-00-0000-00-00-0000-00-00-0000-00-00-0000-00-00-00a0-07-37-99 (CRC)
Bypass State ON or OFF See Chapter 1 for details.
Total Packets Total number of packets that have passed through the
iBypass unit since the last reset. When this value changes,
a circled arrow appears next to the value to alert you to the
change; if polling produces the same total packet result
twice in a row, the circled arrow disappears.
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10 GigaBit iBypass Switch with Heartbeat
39
Field Description
Total Bytes Total number of bytes that have passed through the iBypass
unit since the last reset. When this value changes, a circled
arrow appears next to the value to alert you to the change;
if polling produces the same byte total twice in a row, the
circled arrow disappears.
Oversized Packets This function tracks the number of oversized packets since
the last reset. The Ethernet specication requires that no
packet be larger than 1518 bytes (including checksum).
Any packet that is larger than this is agged as an error and
discarded. These packets are also sometimes referred to
as “Jabbers”. Packets too big are almost always caused by
faulty hardware. The network adapter card on a link showing
a high rate of oversized packets should be replaced. Support IEEE 802.1q
CRC Packets This function tracks the number of CRC errors since the last
reset. MAC Frame CRC errors are the most common. Ethernet packets are encapsulated in a MAC frame that contains
a preamble, and a post-envelope CRC check. The Ethernet
adapter on the sending station creates the preamble, inserts
the packet data (addressing, protocol, data, etc.), calculates
a CRC checksum and inserts it at the end of the packet. If
the receiving station determines that the checksum is incorrect, the packet is assumed to be bogus and is discarded.
MAC frame CRC errors are typically caused by faulty
cabling. If the cabling connecting an Ethernet Adapter or
hub is faulty, the electric connection may be on and off
many times during a transmission. This on-and-off state can
interrupt parts of a transmission and damage the signal. If
the signal is interrupted partially during transmission, the
CRC checksum that was calculated by the network adapter
is longer valid and the packet is agged as a CRC error and
discarded.
CRC errors are common on a busy network, and a small
percentage does not reect a network problem. When the
percentage is large, or when a single station shows a larger
percent CRC errors, there is probably a problem.
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10 GigaBit iBypass Switch with Heartbeat
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Modify an iBypass Switch Name or Address from System
Manager
There are two ways to modify an iBypass Switch name or address. Either change
them from the Conguration Tab for the device, or use the Modify option in the
menu. The second method is described here..
To changeaswitchnameorIPaddressfromtheModifyiBypassSwitchdialog:
1.
In the System Frame, select the image of the iBypass Switch you want to change.
2. Click
Modify in the toolbar. The Modify iBypass Switch dialog displays (see
below).
Figure 25: Modifying the iBypass Switch
3. Change the name or IP address of the iBypass Switch.
4. Optionally add notes.
5. Click Save Change.
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10 GigaBit iBypass Switch with Heartbeat
41
Appendix A
Specications and Models
Specications
Electrical
PowerSupplyInput
100-240VAC, 0.5A, 47-63Hz
PowerSupplyOutput
12V, 5A
Environmental
Operating Temperature
5˚C to 50˚C
Storage Temperature
-10˚C to 70˚C
RelativeHumidity
10% min, 95% max, non-condensing
Mechanical
Dimensions
1.350” high x 12.435” deep x 8.75”
IBPO-HBSR-XFP and IBPO-HBLR-XFP Connectors
(1) DB9 (RS232 conguration port)
(1) RJ45 (management port)
(2) XFP (monitoring ports)
(2) SR LC (network ports) or (2) LR LC (network ports)
Indicators
(1) 2x16 Character LCD
(4) Link LEDs (Fiber Model)
(4) Threshold Alarm LEDs
(2) Power LEDs
(2) Bypass Mode LEDs
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10 GigaBit iBypass Switch with Heartbeat
42
Optical SR Fiber Type
Fiber Type: Corning Multimode 62.5/125μm, wavelength 850nm
Split Ratio Network Port Insertion Loss Monitor Port Insertion Loss
60/40 1.25 dB 1.25 dB
50/50 1.25 dB 1.25 dB
Optical LR Fiber Type
Fiber Type: Corning Singlemode 8.5/125μm, wavelength 1310nm
Split Ratio Network Port Insertion Loss Monitor Port Insertion Loss
60/40 1.25 dB 1.25 dB
50/50 1.25 dB 1.25 dB
TransceiverSpecications
10 GigaBit SR 850nm, VCSEL
10 GigaBit LR 1310nm, Laser
SplitRatios(FiberModel)
60/40, and 50/50
Software
iBypass Command Line Interface
Any terminal emulation software
Web Manager
Any browser
Net Optics System Manager
Windows 98, Windows 2000, Windows XP
Certications
Fully RoHS compliant
Available Models
Models
IBPO-HBSR-XFP iBypass Switch with Heartbeat and XFP ports
IBPO-HBLR-XFP iBypass Switch with Heartbeat and XFP ports
Accessories
RK-iTP2 Two slot rack-mount panel
XFPKT-SR or XFPKT-LR XFP Kits, including cables
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10 GigaBit iBypass Switch with Heartbeat
43
Appendix B
Command Line Interface
iBypass Switch CLI Syntax
This Appendix contains information about the syntax to be used with each CLI
command. Commands include:
Help
Set
Reset
Show
Echo
Display
Command Sub-Command Syntax Description
Help Set help set Displays the set command
options
Reset help reset Displays the reset command
options
Show help show Displays the show command
options
Echo help echo Displays the echo command
options
Display help display Displays the display com-
mand options
•
•
•
•
•
•
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10 GigaBit iBypass Switch with Heartbeat
44
Command Sub-Command Syntax Description
Set IP set ip <address> Where <address> is the ip
address of the iTap
Netmask set netmask
<address>
Where <address> is the ip
address netmask
Gateway set gateway
<address>
Where <address> is the ip
address of the gateway
Manager set manager
<address>
Where <address> is the
ip address of the remote
manager
Parameter Port set parameter
<port ID>
<parameter>
Where <port ID> is A, B, C,
or D and <parameter> is
0 = GigaBit (other variables
not applicable)
Threshold Port set threshold
<port ID>
<parameter>
Where <port ID> is A or B
and <parameter> is 0 to
100% of available bandwidth
Time set time
<date & time>
Where <date & time> is
mm/dd/yyyy-hh:mm:ss
Username set username
<username>
Where <username> is the
authorized user's name, 8
characters or less
Password set password
<password>
Where <password> is the
authorized user's password,
8 characters or less
TX packet xx-xx-xx xx are bytes of HB packet
separated by (-), include
valid CRC
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10 GigaBit iBypass Switch with Heartbeat
45
Command Sub-Command Syntax Description
Reset Peak reset peak
<port ID>
Where <port ID> is A or B
Statistics reset statistics port
<port ID>
Where <port ID> is A or B
Storage reset storage Resets conguation to fac-
tory defaults
Show Set show set Displays currents settings
Status show status Displays iTap status
Statistics show statistics
<port ID>
Where <port ID> is A or B
Power show power Displays power status
Display show display Displays the display setting.
Display OFF disables remote
interfaces and front panel
LCD
User show user Displays current user logged
into the CLI
Echo n/a echo <on/off> Echo off stops typed charac-
ter from being displayed on
the screen
Display n/a display Toggles the front panel
display and remote interface
on and off
Conguring the Heartbeat
From the CLI, you can set:
Command Sub-Command Syntax Description
Set Time-out Set Time-out. Time-out period <0-100>
Re-try Set Re-try fre-
quency
Re-try <0-255>
Note: ____________________________________________________________________
At present time the default values are 1 ms and 3 packets. this makes our Bypass
Switch go to bypass mode in 3x1 ms=3ms if no Heartbeat packet is detected. If customer equipment latency exceeds 3ms, then our Bypass Switch will go into bypass
mode before it detects rst Heartbeat packet. Customers should change one or both
of the above default parameters to the higher number to avoid this behavior.
__________________________________________________________________________
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10 GigaBit iBypass Switch with Heartbeat
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Page 53
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