HST Optical Ethernet Quick Card
HST Optical Ethernet Quick Card
The document describes how to test Optical Ethernet links using the HST-3000 and Fiber
Inspection and Cleaning Gear.
1 Proper Method for Cleaning Fibers
Step
1
Directions
Install the correct bulkhead or patch cord tip to the
probe microscope.
Note: Standard Tips require barrel assempbly
2
Insert the probe into the bulkhead or attaché the patch
cord to inspect.
3
4
5
Press the Results key to display the results of the scope image
Turn the focus control on the probe to focus the image on the display.
There should not be any dirt on the image. If there is
dirt, clean the fiber and then reconnect the fiber. If
one is not certain if the fiber is acceptable, clean the
fiber and then repeat this step to ensure there is no
back reflection or unnecessary attenuation on the link.
Pass
If needing to clean the fiber, use an IBC cleaner and
remove the tip before cleaning.
6
7
Insert the IBC cleaner into the bulkhead and patchcord
until you clear a click two times for each piece of gear.
Fail
8
Repeat steps 1-5 (and possibly 8 and 7) until the fiber appears clean. If you repeat this
procedure three times and the fiber still appears dirty, throw out the fiber as it is likely
scratched.
2 Setup for Testing an Optical Link with the HST-3000
This section describes setup and testing when the location in the field is an optical drop.
Step
Directions
1
The first step is turning the unit on and then
hitting the home key. Then select the Eth
Optical tab and select option 1 1G Terminate.
2
The unit will now boot up. Make sure to insert the proper SFP into the R/T 1 slot (top
left of the unit). The proper SFP will be either a 1310nm or 850nm optical SFP
depending on the handoff.
The next step is to select Layer 2 Traffic as your Test selection.
Now press the configure button on the tester.
Then select RFC 2544 Mode = Disable and
Auto Negotiation and depending on the network
select On or Off (most likely this will be set to
on). Next press the home key.
3
4
5
Now select the Action tab and then select Laser
On.
6
You should see the screen turn green. If not,
select the display key and then select the
summary result pane. Then select the restart
key on the right side.
2
7
The tester is now ready to receive loop commands or proceed to Quick Testing using
the HST-3000 (Section 3)
3 Quick Testing Using the HST-3000
This section describes how to quickly check an active link exists between two test sets. This test
proves that the link exists and will detect if errors occur. After this section is complete one can
safely run the RFC 2544 test to validate the pipe.
Step
1
2
3
4
Directions
This section continues from section 2 and having setup both ends of the link. If you
have not completed the appropriate section, please do so at this time.
Press the configure button. Tap the left and
right arrows until you get to the Summary
Settings Screen.
Then Select:
•
Loop Type -> Broadcast
•
Tx Payload -> Acterna
•
Frame Length -> Random
•
Encapsulation -> Most Likely this will
be VLAN tagged though it depends on the
location and network
•
VLAN ID and Priority -> Depends on
Network, see work order
•
Traffic Load -> again depends on
network, see work order. If unknown enter 1%.
Tap the Right arrow until you get the Ethernet Tab. Select Frame Type -> DIX.
Please note that if you are running across a switched service you have to set the
Destination MAC equal to the far end’s Source MAC address on both testsets.
Tab right to select the Error Page.
Make sure that
•
Error Type -> FCS
•
Insertion Type -> Single
3
5
Tap right to select the Ethernet Filter Tab.
Make sure that
Destination Type -> Don’t Care
Source Type -> Don’t Care
Encapsulation -> Don’t Care
Payload Analysis -> On
Rx Payload -> Acterna
6
7
Next press the home key. Then select Restart.
Now to Loop up the far end select the Action
Key, then select #2 Loop and then Select #1
Loop Up.
8
You should see a message at the top stating
“Remote Loop Up Successful…”… If you do
not see this message please double-check your
settings. If the message still does not appear
repeat steps 1-6 for the far end tester.
9
Now select the Action key and then select Start
Traffic. Check that the Frame LED on the top of
the unit becomes illuminated.
10
Press the right arrow to see the Link Stats and
ensure that frames are being received (Total Util
% Cur is >0).
4
11
Now press the left arrow to go back to the
summary page. Check that the summary page
remains green. Select the Action button and
select Insert Single FCS Error.
12
Check that the screen has turned red and a
single error has appeared on the screen.
13
Quick test is now complete. Please proceed to the next section RFC 2544 testing.
4 RFC 2544 Testing Using the HST-3000
This section describes how to validate the link between two locations. The output of this test is a
go or no go on the quality of the link and the results can be saved for further analysis. This
section is expected to take approximately 20 minutes for testing.
Step
Directions
1
This section continues from 4.3. If you have not
completed that section, please do so at this time.
If you are ready to proceed, press the action key
and select Stop traffic.
2
Press the configure button. Tap the left and
right arrows until you get to the Summary
Settings Screen. Then select RFC 2544 Mode
and press Symmetric.
5
3
Tap right to select the RFC 2544 Settings. Make
sure that
Load Format -> Bit Rate
Auto Save Report -> Enable
Auto Restore Cfg* -> Disable
You can also enter the customer, location,
technician and any comments you have that you
wish to be stored on the final report.
4
Tap right to select the Test Selections. Make sure
that
Throughput -> Enable
Latency (RTD)* -> Enable
Packet Jitter * -> Enable
Frame Loss -> Enable
Back to Back -> Disable
Max Bandwidth -> this will change at each
location but should be the CIR for the circuit.
5
Tap right to select the Frame Length Tab. Make
sure that
The smallest possible Frame Length is selected
(this will be either 64, 68, 70, or 72 depending
on the settings). To do this go to Frame Length
1 and select the value.
Select 512 entry 4.
Select 1518 or 1522 (whichever one you are
allowed to select) in entry 7.
Make all the rest of the entries disabled
Please see picture for a correct sample setup.
Tap right to select the Throughput. Make sure
that
Accuracy -> To within 0.1 (Mbps)
Test Dur. -> 120 sec
Frame Loss Tol -> 0Mbps
Show Pass/Fail -> No
Zero in Method -> JDSU Enhanced
6
6
7
Tap right to select the Latency. Make sure that
Number of Trials -> 1
Trial Dur. -> 120 sec
Show Pass/Fail -> No
8
Tap right to select the Jitter. Make sure that
Number of Trials -> 1
Trial Dur. -> 120 sec
Show Pass/Fail -> No
9
Tap right to select the Frame Loss. Make sure
that
Test Procedure -> RFC 2544
Trial Dur. -> 60 sec
Test Granularity -> 10 Mbps
10
11
Next press the home key. Then select Restart.
Now select the Action key and then select Start
Traffic.
12
The RFC 2544 test will automatically run through
all of its tests and save results to the unit. A bar
at the top will diplay the minimum time
remaining for the test to be completed.
7
13
The link has now been fully tested. In the next section one can download the results to
USB and view them on a laptop to determine if the link passed or failed final
inspection.
5 Downloading Results on the HST-3000 (via USB)
This section describes how to download results via USB from the HST-3000
Step
1
2
3
4
5
6
Directions
Connect the USB Flash Drive to the HST-3000’s USB port on the top of the
mainframe.
Press the green Power Key to turn on the HST-3000.
Press the System Navigation key, and press
the TOOLS soft key. Press the Up Arrow
or Down Arrow key to select File
Manager, then press the OK key to manage
user files in the file system.
Using the OK key, Up Arrow key, and
Down Arrow key, navigate to the desired
file. To go to RFC 2544 results select
results/rfc 2544 folder. Press the Action
Soft key and select Copy to USB. Repeat
step 3 for all desired files.
Power cycle the HST-3000 by Pressing the green power button to turn the unit
off.
Disconnect the USB Flash Drive from the HST-3000’s USB port on the top of
the mainframe and load it onto a PC for analysis
8
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