L351 10/100BASE
Media Converter
User Manual
NOTICE
Canoga Perkins has prepared this users manual for use by customers and Canoga Perkins personnel as
a guide for the proper installation, operation and/or maintenance of Canoga Perkins equipment. The
drawings, specifications and information contained in this document are the property of Canoga
Perkins and any unauthorized use or disclosure of such drawings, specifications and information is
prohibited.
Canoga Perkins reserves the right to change or update the contents of this manual and to change the
specifications of its products at any time without prior notification. Every effort has been made to
keep the information in this document current and accurate as of the date of publication or revision.
However, no guarantee is given or implied that the document is error free or that it is accurate with
regard to any specification.
CANOGA PERKINS CORPORATION
20600 Prairie Street
Chatsworth, California 91311-6008
Business Phone: (818) 718-6300
(Monday through Friday 7 a.m. – 5 p.m. Pacific Time)
FAX: (818) 718-6312 (24 hrs.)
Website: www.canoga.com
Email: fiber@canoga.com
Copyright © 2003 – 2010 Canoga Perkins Corporation
All Rights Reserved
®
EdgeAccess
Universal Chassis System
L351 10/100BASE Media Converter
User Manual
Model Number L351-UM
Part Number 6912580
Rev. G 06/2010
Software Version 5.4
To see Technical Advisories and Product Release Notes, go to Canoga Perkins' website.
CAUTION!
This product may contain a laser diode emitter operating at a wavelength of 1300 nm - 1600 nm. Use
of optical instruments (for example: collimating optics) with this product may increase eye hazard.
Use of controls or adjustments or performing procedures other than those specified herein may result
in hazardous radiation exposure.
Under normal conditions, the radiation levels emitted by this product are under the Class 1 limits in
21 CFR Chapter 1, Subchapter J.
ATTENTION!
Cet équipement peut avoir une diode laser émettant à des longueurs d'onde allant de 1300nm à
1600nm. L'utilisation d'instruments optiques (par exemple : un collimateur optique) avec cet
équipement peut s'avèrer dangereuse pour les yeux. Procéder à des contrôles, des ajustements ou toute
procédure autre que celles décrites ci-après peut provoquer une exposition dangereuse à des
radiations.
Sous des conditions normales, le niveau des radiations émises par cet équipement est en dessous des
limites prescrites dans CFR21, chapitre 1, sous chapitre J.
NOTICE!
This device contains static sensitive components. It should be handled only with proper Electrostatic
Discharge (ESD) grounding procedures.
NOTE!
Cet équipement contient des composants sensibles aux décharges électro-statiques. Il doit absolument
être manipulé en respectant les règles de mise à la terre afin de prévenir de telles décharges.
EdgeAccess Universal Chassis System
Table of Contents
Chapter 1 Overview.................................................................................................1-1
1.1 L351 Series.............................................................................................................................1-1
1.2 L351 Hosts .............................................................................................................................1-2
Chapter 2 Setup and Installation............................................................................2-1
2.1 Unpack and Inspect................................................................................................................2-1
2.2 Set Up the L351......................................................................................................................2-1
2.2.1 Install the L351 in a BAM Host.............................................................................................2-2
2.2.2 Install the L351 in a UCS Model 1002 or Standalone Enclosure...........................................2-3
2.3 Install the Cables....................................................................................................................2-3
2.4 Measure Fiber Link Attenuation and Transmit Power...........................................................2-3
Chapter 3 User Operation.......................................................................................3-1
3.1 L351 Functions.......................................................................................................................3-1
3.2 Power Up................................................................................................................................3-1
3.3 Front Panel LEDs...................................................................................................................3-1
3.4 Alarms....................................................................................................................................3-1
3.4.1 Remote Fault ..........................................................................................................................3-3
3.4.2 Link Loss Forwarding............................................................................................................3-3
3.4.3 Link Loss Echo.......................................................................................................................3-4
3.4.4 Loopback................................................................................................................................3-4
Chapter 4 Management - VT100............................................................................4-1
4.1 VT100 Terminal Emulation ...................................................................................................4-1
4.2 PC Configuration for Terminal Operation .............................................................................4-1
4.3 Management User Interface ...................................................................................................4-2
4.3.1 General Screen Format...........................................................................................................4-2
4.3.2 User Interface Organization ...................................................................................................4-3
4.3.3 Login Menu............................................................................................................................4-7
4.3.4 DMM Main Menu..................................................................................................................4-7
4.4 L351 Main Menu....................................................................................................................4-7
4.5 System Configuration Menu ..................................................................................................4-8
4.5.1 Hardware Information Screen ..............................................................................................4-10
4.5.2 Functional Configuration Screen..........................................................................................4-12
4.5.3 Trap Configuration...............................................................................................................4-16
4.5.4 Alarm Output Configuration................................................................................................4-17
4.5.5 System Information Screen ..................................................................................................4-18
4.5.6 IP/SNMP Agent Configuration............................................................................................4-19
4.5.5 Security Configuration.........................................................................................................4-23
4.5.6 Account Configuration Screen.............................................................................................4-24
4.5.8 Radius Client Screen............................................................................................................4-27
4.5.9 SNTP Client Configuration Screen......................................................................................4-28
4.5.10 Syslog Client Configuration...................................................................................................4-30
4.6 Diagnostics Menu .................................................................................................................4-31
L351 10/100BASE Media Converter i
Loopback Setup ...................................................................................................................4-31
4.6.1
4.6.1 Remote Latency/Jitter Test .................................................................................................. 4-32
4.6.2 Remote Connectivity Loss Detection ..................................................................................4-33
4.7 Link Status Screen ...............................................................................................................4-34
4.8 System Alarms..................................................................................................................... 4-35
4.9 Layer 2 Statistics.................................................................................................................. 4-36
4.10 Utilities.................................................................................................................................4-36
4.10.1 PING Generation .................................................................................................................4-38
4.10.2 Static ARP Table ................................................................................................................. 4-39
4.10.3 Dynamic ARP Table............................................................................................................ 4-39
4.11 Software Upgrade ................................................................................................................4-40
Chapter 5 Maintenance and Troubleshooting......................................................5-1
5.1 General Maintenance.............................................................................................................5-1
5.1.1 Manage Cable Links..............................................................................................................5-1
5.1.2 Check Optical Power Levels.................................................................................................. 5-1
5.1.3 Measure Transmitter Output Power.......................................................................................5-2
5.1.4 Measure Receiver Input Power.............................................................................................. 5-2
5.1.5 Measure Fiber Link Attenuation............................................................................................ 5-3
5.2 Troubleshooting..................................................................................................................... 5-3
5.2.1 LED Indicators....................................................................................................................... 5-3
5.2.2 New Installation..................................................................................................................... 5-4
5.2.3 SW2 and SW3 Settings Ignored ............................................................................................ 5-4
5.2.4 Problems With Fiber Optics...................................................................................................5-4
Chapter 6 Specifications .........................................................................................6-1
6.1 L351 Specifications ...............................................................................................................6-1
6.2 L351 Models.......................................................................................................................... 6-2
Appendix A Warranty Information....................................................................A-1
Appendix B Acronym and Abbreviation List.................................................... B-1
ii L351 10/100BASE Media Converter
EdgeAccess Universal Chassis System
List of Figures
Figure 1-1. The L351...........................................................................................................................1-1
Figure 2-1. SW2 and SW3 Locations..................................................................................................2-1
Figure 3-1. Remote Fault Signal .........................................................................................................3-3
Figure 3-2. Link Loss Forwarding Propagation..................................................................................3-3
Figure 3-3. Link Loss Echo Detection ................................................................................................3-4
Figure 3-4. Local-Local Loopback Mode............................................................................................3-4
Figure 3-5. Local-Remote Loopback Mode........................................................................................3-5
Figure 3-6. Remote-Local Loopback Mode........................................................................................3-5
Figure 3-7. Remote-Remote Loopback Mode.....................................................................................3-5
Figure 4-1. General Screen Format.....................................................................................................4-2
Figure 4-2. L351 Main Menu..............................................................................................................4-8
Figure 4-3. System Configuration Menu.............................................................................................4-8
Figure 4-4. Hardware Information Screen.........................................................................................4-10
Figure 4-5. SFP Information Screen with 9145 as the Remote Partner.............................................4-11
Figure 4-6. Remote Hardware Information Screen...........................................................................4-11
Figure 4-7. Functional Configuration Screen....................................................................................4-12
Figure 4-8. Remote Configuration Menu..........................................................................................4-13
Figure 4-9. Remote Functional Configuration Screen.......................................................................4-13
Figure 4-10. Remote VLAN Configuration Screen...........................................................................4-14
Figure 4-11. Remote VLAN Tag Translation Table Screen .............................................................4-14
Figure 4-12. Remote P-Bit Translation Table Screen .......................................................................4-15
Figure 4-13. Remote Port Filters Table Screen.................................................................................4-15
Figure 4-14. Trap Configuration Screen ...........................................................................................4-16
Figure 4-15. Alarm Output Configuration Screen.............................................................................4-17
Figure 4-16. System Information Screen...........................................................................................4-18
Figure 4-17. IP/SNMP Agent Configuration Screen .........................................................................4-19
Figure 4-18. ManagementIP Configuration Screen ..........................................................................4-19
Figure 4-18. Host Access Table Screen ............................................................................................4-21
Figure 4-19. Trap/Notification Destination Table Screen.................................................................4-21
Figure 4-20. Remote Auxiliary IP Configuration screen ..................................................................4-22
Figure 4-21. Security Configuration Screen......................................................................................4-23
Figure 4-21. Account Configuration Screen......................................................................................4-25
Figure 4-22. Edit User Account Screen.............................................................................................4-25
Figure 4-23. Radius Client Screen.....................................................................................................4-27
L351 10/100BASE Media Converter iii
Figure 4-24. SNTP Client Configuration Screen..............................................................................4-28
Figure 4-25. SYSLOG Client Configuration Screen ........................................................................ 4-30
Figure 4-26. Diagnostics Menu......................................................................................................... 4-31
Figure 4-27. Loopback Setup Screen................................................................................................4-32
Figure 4-28. Latency/Jitter Test Screen............................................................................................ 4-33
Figure 4-29. Connectivity Loss Detection Screen ............................................................................ 4-34
Figure 4-29. Link Status Screen........................................................................................................4-35
Figure 4-30. System Alarms Screen .................................................................................................4-35
Figure 4-31. Layer 2 Statistics Screen.............................................................................................. 4-36
Figure 4-32. Utilities Menu Screen...................................................................................................4-37
Figure 4-33. PING Generation Screen.............................................................................................. 4-38
Figure 4-34. Static ARP Table Screen.............................................................................................. 4-39
Figure 4-35. Dynamic ARP Table Screen ........................................................................................ 4-39
Figure 4-36. Software Upgrade Screen.............................................................................................4-40
List of Tables
Table 2-1. SW2 and SW3 Functions...................................................................................................2-2
Table 3-1. L351 LEDs ........................................................................................................................3-2
Table 4-1.System Configuration Option Definitions.......................................................................... 4-9
Table 4-2. Functional Configuration Option Definitions..................................................................4-13
Table 4-3. Alarm Output Definitions................................................................................................4-17
Table 4-4. SNMP Configuration Parameters Description.................................................................4-19
Table 4-5. SNMP Configuration Parameters Description.................................................................4-20
Table 4-6. Security Configuration Option Definitions .....................................................................4-24
Table 4-7. User Parameters...............................................................................................................4-26
Table 4-8. Radius Client Configuration Option Definitions.............................................................4-27
Table 4-9. SNTP Client Configuration Option Definitions.............................................................. 4-29
Table 4-10. SYSLOG Client Configuration Option Definitions ......................................................4-30
Table 4-11. Diagnostics Screen Definitions .....................................................................................4-32
Table 4-12. Utilities Menu Options .................................................................................................. 4-38
iv L351 10/100BASE Media Converter
EdgeAccess Universal Chassis System
L351 10/100BASE Media Converter v
EdgeAccess Universal Chassis System
Chapter 1
Overview
The Edge Access L351 Series 10/100BASE Media Converters convert and extend Ethernet media
between Local Area Networks (LANs) located up to 120 Km apart.
In addition, the L351 offers Layer 2 statistics, local and remote loopback, remote software upgrade,
and remote control and monitoring through the SideBand Management Channel (SBMC).
1.1 L351 Series
The L351 receives and transmits 10/100BASE Ethernet data on single mode or multimode fiber optic
cable.
The L351 front panel, shown in Figure 1-1, includes:
• User port: UTP connector
• Extension port: SC connector, simplex or duplex; simplex requires a pair of L351s, one at
1310 nm wavelength and the other at 1550 nm wavelength
• Status LEDs:
• STA shows L351 status
• CFG shows configuration and setup status
• 100 and FDX show status for the User port
• LNK/RX and TX pairs for the User and Extension ports show that data is received and
transmitted
Figure 1-1. The L351
L351 10/100BASE Media Converter 1-1
1.2 L351 Hosts
The L351 can be used in a variety of chassis. To install the L351 in a UCS 1000 or UCS 1001
chassis, you must use a Model 1230 Bus Access Module (BAM). However, you can install the L351
directly in a UCS 1002 or Model 1020 or 1030 enclosures.
• The UCS 1000 Chassis can hold up to 15 Model 1230 BAMs with up to two L351s per BAM.
This allows a total of 30 L351s per UCS 1000.
• The UCS 1001 Chassis can hold up to two Model 1230 BAMs with up to two L351s per BAM.
This allows a total of four L351s per UCS 1001.
• The UCS 1002 Chassis directly hosts up to 14 L351s, or 13 L351s with the optional Domain
Management Module (DMM) installed.
• A 1020 or 1030 standalone enclosure holds one L351.
The L351 is hot swappable; it can be inserted or removed at any time without disrupting the data
transfer of other modules in the chassis.
1-2 L351 10/100BASE Media Converter
EdgeAccess Universal Chassis System
Chapter 2
Setup and Installation
This section describes how to set up and install the L351.
Before setting up the L351, make sure the chassis is installed and its Users Manual is available for
reference. If the system includes an optional DMM and CIM(s), make sure these are available:
• Serial cable (required to connect the chassis or 1020 enclosure to a VT100 type terminal or PC)
• VT100 type terminal or PC to run the User Interface manager
• The DMM and CIM manuals
2.1 Unpack and Inspect
Unpack and inspect all components. Save the shipping carton and packing materials in case you need
to return the equipment to the manufacturer. Appendix A provides information for Return Material
Authorization (RMA).
2.2 Set Up the L351
Before inserting the L351, look up the model number to verify that the L351 provides the wavelength
and fiber mode type that match its link partner.
For installation in a UCS 1001 or a Model 1030 enclosure, or if you plan to use the Hardware Option
Control see Chapter 4, set SW2 and SW3 (see Figure 2-1 and Table 2-1). For more information about
the SW2 and SW3 functions, see Chapter 3.
SW2 and SW3
Figure 2-1. SW2 and SW3 Locations
L351 10/100BASE Media Converter 2-1
Table 2-1. SW2 and SW3 Functions
Position Function On Off
SW2-1/
100
SW2-2/A User Port Auto-Negotiate Enable automatic data
SW2-3/F User Port Full Duplex Select full duplex Select half duplex
SW2-4/N Not Used N/A N/A
SW3-1/S SBMC Enable SBMC Disable SBMC
SW3-2/L LLF, Extension to User Enable Link Loss
SW3-3/U LLF, User to Extension Enable LLF propagating
SW3-4/E Extension Port LLE/RMTF
Note: Factory default hardware control setting for User Port Auto-Negotiate is ON. SMBC
shipping configuration is disabled.
User Port 100M Speed Select 100M speed Select 10 M speed
Follow SW2-1 and 2-3
(if SBMC is disabled) or
RMTF only (if SBMC is
enabled)
rate and duplex selection
Forwarding (LLF)
propagating from
Extension Port to User
Port
from User Port to
Extension Port
Enable LLE for
Extension Port (Disables
RMTF)
settings
Disable LLF
propagating from
Extension Port to User
Port
Disable LLF
propagating from User
Port to Extension Port
Disable LLE for
Extension Port (Enables
Remote Fault)
2.2.1 Install the L351 in a BAM Host
Each BAM can hold up to two L351s. Follow these steps to install the BAM and the L351:
1. Insert a BAM into any available slot of either a 1000 or 1001 chassis. Slide the BAM into the
rails and push it firmly into the backplane, then tighten the captive screws. If you encounter
resistance, pull the BAM out and check that no connector pins are bent.
2. Insert the L351 into an unused slot in the BAM. Slide the L351 into the rails and push it firmly
into the backplane, then tighten the captive screw. If you encounter resistance, pull it out and
check that no connector pins are bent.
If you encounter more difficulty, contact Canoga Perkins at (800) 360-6642 for technical assistance.
Note: The L351 and BAM are hot-swappable and can be inserted or removed without disrupting
data transfer in other application modules.
2-2 L351 10/100BASE Media Converter
EdgeAccess Universal Chassis System
2.2.2 Install the L351 in a UCS Model 1002 or Standalone Enclosure
Insert the L351 into an unused slot. Slide the L351 into the rails and push it firmly into the backplane,
then tighten the captive screw. If you encounter resistance, pull it out and check that no connector
pins are bent. If you encounter more difficulty, contact Canoga Perkins at (800) 360-6642 for
technical assistance.
Note: The L351 is hot-swappable and can be inserted or removed without disrupting data transfer
in other modules in the chassis.
2.3 Install the Cables
The L351 uses both electrical and fiber optic cables. Electrical UTP cables connect to the User port.
Fiber optic cables connect to the Extension port. Dirty optical connectors are a common source of link
loss or attenuation problems, especially for single mode fiber (SMF). Clean the connectors before
plugging in a cable and whenever there is a significant or unexplained light loss. To prevent
contamination, always install protective dust covers on unused fiber optic connectors.
Follow these steps to install the cables:
1. Wipe the ferrule and the end-face surface of the male fiber coupler with a lint-free isopropyl
alcohol pad from a fiber cleaning kit.
2. Use canned air to blow out any dust from the female fiber coupler.
Caution: To avoid damaging the fiber end-surface or connector, use extreme care when
installing or removing cables.
3. Plug in the optical cables:
• If you have a single fiber connector (BIDI), plug the cable into a pair of L351s, one at 1310
nm/1470 nm wavelength and the other at 1550 nm wavelength.
• If you have a duplex connector, use Tx to Rx, and Rx to Tx orientation.
Caution: To protect the Ethernet port from an intrabuilding lightning surge, use a properly
grounded shielded cable.
4. Plug the UTP Ethernet cable with RJ-45 connector into the User port on the front of the L351.
5. Label each cable and connector with a signal name and direction.
2.4 Measure Fiber Link Attenuation and Transmit Power
Canoga Perkins recommends that you determine and record link attenuation and transmission power
before starting normal link traffic. The attenuation factor and transmission power identify potential
problems with links near the lower limit of receiver limitations.
For details on link attenuation and transmission power, see Chapter 5.
L351 10/100BASE Media Converter 2-3/(2-4 Blank)
EdgeAccess Universal Chassis System
Chapter 3
User Operation
This chapter describes the hardware features and functions of the L351.
3.1 L351 Functions
Each L351 requires a host for power. The L351 can function as a non-managed, standalone unit; as a
managed, standalone unit; or as a managed unit in a chassis with other application modules.
3.2 Power Up
During the initial power-up sequence, all LEDs light amber. When start-up is complete, the setup and
installation are correct, and data is transmitting normally across the link, the STA LED lights green
and the LNK/Rx and Tx LEDs for both ports light green or blink green when they transmit or receive
data. See Table 3-1.
3.3 Front Panel LEDs
The LEDs on the front panel show the system and port conditions. The STA LED shows the link
condition. The LNK/Rx and Tx LEDs show the conditions on the User and Extension Ports and can
be used as an aid when troubleshooting a fault. Table 3-1 shows the LED states for various
conditions.
In the UCS 1000 and 1001, a BAM holds up to two L351s. On the BAM, the STA LED lights green
if either L351 is operating normally. If both L351s are in error conditions, the BAM STA LED lights
amber.
3.4 Alarms
The L351 can generate Major and Minor Alarms.
• In the UCS 1000 and 1002, these alarms are forwarded over the backplane to the CIM and appear
on the Major (MAJ) and Minor (MIN) CIM LEDs and then are forwarded to the DMM for
monitoring and transfer to the Network Manager as traps.
• In the UCS 1001, the alarm outputs are forwarded to the chassis motherboard.
For details about the Alarm Output Configuration, Alarm Log, and Trap Configuration screens, see
Chapter 4.
L351 10/100BASE Media Converter 3-1
EdgeAccess Universal Chassis System
Table 3-1. L351 LEDs
LED Status Description
STA
CFG
LNK/Rx (User Port) Off No link
Green Link Established
Green blinking Receiving activity
Amber System self-test
TX (User Port)
Off No power
Green Normal operation
Amber System self-test
Amber blinking Downloading file
Red Major alarm
Off SBMC is disabled
Green SBMC is enabled
Amber System self-test
Red Configuration error
Off No transmission activity
Green Transmission activity
Amber Port in standby mode or system self-test
Red Transmission disabled due to LLF or port disabled
LNK/Rx
(Extension Port)
Tx (Extension Port)
Off 10 M data rate 100
Green 100 M data rate
Off Half duplex mode FDX
Green Full duplex mode
Off No link
Green Link Established
Green blinking Receiving activity
Amber System self-test
Red Receiving Remote Fault
Off No transmission activity
Green blinking Transmission activity
Amber Port in standby mode or system self-test
Red Transmission disabled due to LLF
3-2
EdgeAccess Universal Chassis System
3.4.1 Remote Fault
If the Extension port Rx loses the signal, it sends a Remote Fault (RMTF) signal from its Tx, the Rx
LED is off, and an alarm flags the link loss on the Extension port. When the Extension port receives a
Remote Fault signal, the Rx LED lights red and an alarm flags the remote side optical link failure.
Both local and remote link partners must be configured to the same RMTF enable/disable setting.
RMTF complies with the IEEE802.3u Remote Fault standard.
Figure 3-1. Remote Fault Signal
3.4.2 Link Loss Forwarding
When Link Loss Forwarding (LLF) is enabled, a fault on one side of the L351 propagates to the other
side to notify that device and stops signal transmission (brings down the link). See Figure 3-2. Set the
LLF propagation to User to Extension, Extension to User, or both directions. Set this in the User
Interface or at SW3-2 (L) and SW3-3 (U). For details on setting SW3, see Chapter 2.
Figure 3-2. Link Loss Forwarding Propagation
L351 10/100BASE Media Converter 3-3
EdgeAccess Universal Chassis System
3.4.3 Link Loss Echo
Caution: To avoid a lockup condition, do not set LLE at both the local and remote ends of the
link.
Link Loss Echo (LLE) propagates a link loss to the device connected to the L351 Extension Port. See
Figure 3-3. If a link loss is detected on the Extension Port Rx, the Extension Port Tx is disabled,
echoing the fault back to the source. LLE configures the L351 to not send data until it receives data.
Set this in the User Interface or at SW3-4 (E). For details on setting SW3, see Chapter 2.
Figure 3-3. Link Loss Echo Detection
Note: LLE is available only when SBMC is disabled; use LLF when you enable SBMC.
3.4.4 Loopback
The L351 supports four loopback modes that you can set at the local site for both the Local and
Remote L351s. These modes loop the data through either the physical layer (PHY) on the User side
or the FPGA. For details on setting loopback in software, see Chapter 4.
• Local-Local mode loops the electrical data that the Local L351 receives on the local User Port Rx
through the FPGA to the User Port Tx. The data is not sent out the Extension Port Tx and
incoming data on the Extension Port Rx is ignored. See Figure 3-4. To set this mode at the
Diagnostics screen, set the Loopback State for the Local module to Local.
Figure 3-4. Local-Local Loopback Mode
3-4
EdgeAccess Universal Chassis System
• Local-Remote mode loops the optical data that the Remote L351 receives on the Extension Port
Rx through the User PHY to the Extension Port Tx. The data is not sent out the remote User Port
Tx and incoming data on the remote User Port Rx is ignored. See Figure 3-5. To set this mode at
the Diagnostics screen, set the Loopback State for the Local module to Remote.
Figure 3-5. Local-Remote Loopback Mode
• Remote-Local mode loops the electrical data that the Remote L351 receives on the User Port Rx
through the FPGA to the User Port Tx. The data is not sent out the remote Extension Port Tx and
incoming data on the remote Extension Port Rx is ignored. See Figure 3-4. To set this mode, at
the Diagnostics screen, set the Loopback State for the Remote module to Local.
Figure 3-6. Remote-Local Loopback Mode
• Remote-Remote mode loops the optical data that the Local L351 receives on the Extension Port
Rx through the Local User PHY to the Extension Port Tx. The data is not sent out the local User
Port Tx and incoming data on the local User Port Rx is ignored. See Figure 3-5. To set this mode,
at the Diagnostics screen, set the Loopback State for the Remote module to Remote.
Figure 3-7. Remote-Remote Loopback Mode
For loopback, the L351 uses a unique MAC address that is listed on the Diagnostics screen as Loop
Test MAC Address; for details about using the software and accessing the Diagnostics screen, see
Chapter 4. In loopback mode, the L351 filters the incoming packets to identify the test packets
through the MAC address. You can set two diagnostics options if you want to alter the data during
loopback, Swap MAC Address at Loopback Point, which swaps the test MAC address with the
source MAC address, and Recalculate CRC at Loopback Point. The test packets are returned to the
source according to the selected mode.
L351 10/100BASE Media Converter 3-5/(3-6 Blank)
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