How to check Optical Power of SFP'S (SFP+)

[l***@pt.lu]

Hi,

Is it possible to check RX Power of SFP's on Enterasys switches (C5,B5,D2, S4...)?
Which CLI command can I use to check the SFP status?

Regards,
Franco
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[Lou H. Goddard]

I have no idea, but you could but a light meter on the fiber to check. They aren't too expensive these days.

Thanks,

Lou Goddard

Network Engineer

302-552-8053

***@hbcs.org

----- Original Message -----
From: ***@pt.lu
Sent: Wed, 7/13/2011 11:08am
To: Enterasys Customer Mailing List <***@listserv.unc.edu>
Subject: [enterasys] How to check Optical Power of SFP'S (SFP+)

Hi,

Is it possible to check RX Power of SFP's on Enterasys switches (C5,B5,D2, S4...)?
Which CLI command can I use to check the SFP status?

Regards,
Franco
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[Sonny Langhurst]

Franco,
The only way that I know of to check optical power is with a light meter. We use a Noyes Optical Meter to measure incoming light from the far end and tx power at the SFP and then go to the other far end measure the difference. Fluke is another source for equipment. Some telecommunications like J-Mux (sonnet systems) will have built in device to measure the diode current and make a relative measurement on the tx side. Hope this helps you.


Regards,

Sonny Langhurst
Douglas Public Utility District
Washington State
***@dcpud.org

-----Original Message-----
From: Matthias Nees [mailto:***@bell.de]
Sent: Thursday, July 14, 2011 1:23 AM
To: Enterasys Customer Mailing List
Subject: AW: [enterasys] How to check Optical Power of SFP'S (SFP+)

Hi,

the easiest way to check status of ports/gbic is "sh port status".
With "show port counters" you can check if some errors occur on that port.

I do not know any CLI to check RX or TX Power of an GBIC - if you assume there is an problem with your gbic, try a new one.


Regards,
Matthias Nees

-----Ursprüngliche Nachricht-----
Von: ***@pt.lu [mailto:***@pt.lu]
Gesendet: Mittwoch, 13. Juli 2011 17:08
An: Enterasys Customer Mailing List
Betreff: [enterasys] How to check Optical Power of SFP'S (SFP+)

Hi,

Is it possible to check RX Power of SFP's on Enterasys switches (C5,B5,D2, S4...)?
Which CLI command can I use to check the SFP status?

Regards,
Franco
---
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[D'Estienne, Michael]

this type of diagnostic feature is dependent on the sfp vendor and if they support the industry standard sff-xxxx(i forgot). for example, cisco's sfp's that come with dom, you can check the optical power (input/output), voltage...etc...

you can't check these variables with just any sfp. you'll have to contact enterasys or your sfp vendor to see if the sfp's have dom built in.

Michael d’Estienne


-----Original Message-----
From: bounce-29486639-***@listserv.unc.edu [mailto:bounce-29486639-***@listserv.unc.edu] On Behalf Of Sonny Langhurst
Sent: Thursday, July 14, 2011 10:21 AM
To: Enterasys Customer Mailing List
Subject: RE: [enterasys] How to check Optical Power of SFP'S (SFP+)

Franco,
The only way that I know of to check optical power is with a light meter. We use a Noyes Optical Meter to measure incoming light from the far end and tx power at the SFP and then go to the other far end measure the difference. Fluke is another source for equipment. Some telecommunications like J-Mux (sonnet systems) will have built in device to measure the diode current and make a relative measurement on the tx side. Hope this helps you.


Regards,

Sonny Langhurst
Douglas Public Utility District
Washington State
***@dcpud.org

-----Original Message-----
From: Matthias Nees [mailto:***@bell.de]
Sent: Thursday, July 14, 2011 1:23 AM
To: Enterasys Customer Mailing List
Subject: AW: [enterasys] How to check Optical Power of SFP'S (SFP+)

Hi,

the easiest way to check status of ports/gbic is "sh port status".
With "show port counters" you can check if some errors occur on that port.

I do not know any CLI to check RX or TX Power of an GBIC - if you assume there is an problem with your gbic, try a new one.


Regards,
Matthias Nees

-----Ursprüngliche Nachricht-----
Von: ***@pt.lu [mailto:***@pt.lu]
Gesendet: Mittwoch, 13. Juli 2011 17:08
An: Enterasys Customer Mailing List
Betreff: [enterasys] How to check Optical Power of SFP'S (SFP+)

Hi,

Is it possible to check RX Power of SFP's on Enterasys switches (C5,B5,D2, S4...)?
Which CLI command can I use to check the SFP status?

Regards,
Franco
---
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To unsubscribe from enterasys, send email to ***@unc.edu with the body: unsubscribe enterasys Michael.D'***@dhs.gov

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[D'Estienne, Michael]

so i asked gtac abt this and their response was that their switches are not capable of displaying these types of diagnostics from the sfps. the sfp's themselves are capable but you'd have to stick them into another switch vendor to see the data.


Michael d’Estienne


-----Original Message-----
From: bounce-29486639-***@listserv.unc.edu [mailto:bounce-29486639-***@listserv.unc.edu] On Behalf Of Sonny Langhurst
Sent: Thursday, July 14, 2011 10:21 AM
To: Enterasys Customer Mailing List
Subject: RE: [enterasys] How to check Optical Power of SFP'S (SFP+)

Franco,
The only way that I know of to check optical power is with a light meter. We use a Noyes Optical Meter to measure incoming light from the far end and tx power at the SFP and then go to the other far end measure the difference. Fluke is another source for equipment. Some telecommunications like J-Mux (sonnet systems) will have built in device to measure the diode current and make a relative measurement on the tx side. Hope this helps you.


Regards,

Sonny Langhurst
Douglas Public Utility District
Washington State
***@dcpud.org

-----Original Message-----
From: Matthias Nees [mailto:***@bell.de]
Sent: Thursday, July 14, 2011 1:23 AM
To: Enterasys Customer Mailing List
Subject: AW: [enterasys] How to check Optical Power of SFP'S (SFP+)

Hi,

the easiest way to check status of ports/gbic is "sh port status".
With "show port counters" you can check if some errors occur on that port.

I do not know any CLI to check RX or TX Power of an GBIC - if you assume there is an problem with your gbic, try a new one.


Regards,
Matthias Nees

-----Ursprüngliche Nachricht-----
Von: ***@pt.lu [mailto:***@pt.lu]
Gesendet: Mittwoch, 13. Juli 2011 17:08
An: Enterasys Customer Mailing List
Betreff: [enterasys] How to check Optical Power of SFP'S (SFP+)

Hi,

Is it possible to check RX Power of SFP's on Enterasys switches (C5,B5,D2, S4...)?
Which CLI command can I use to check the SFP status?

Regards,
Franco
---
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To unsubscribe from enterasys, send email to ***@unc.edu with the body: unsubscribe enterasys Michael.D'***@dhs.gov

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[Lou H. Goddard]

Feature request!

Thanks,

Lou Goddard

Network Engineer

302-552-8053

***@hbcs.org

----- Original Message -----
From: "D'Estienne, Michael" <Michael.D'***@dhs.gov>
Sent: Fri, 7/15/2011 11:54am
To: Enterasys Customer Mailing List <***@listserv.unc.edu>
Subject: RE: [enterasys] How to check Optical Power of SFP'S (SFP+)

so i asked gtac abt this and their response was that their switches are not capable of displaying these types of diagnostics from the sfps. the sfp's themselves are capable but you'd have to stick them into another switch vendor to see the data.


Michael d’Estienne


-----Original Message-----
From: bounce-29486639-***@listserv.unc.edu [mailto:bounce-29486639-***@listserv.unc.edu] On Behalf Of Sonny Langhurst
Sent: Thursday, July 14, 2011 10:21 AM
To: Enterasys Customer Mailing List
Subject: RE: [enterasys] How to check Optical Power of SFP'S (SFP+)

Franco,
The only way that I know of to check optical power is with a light meter. We use a Noyes Optical Meter to measure incoming light from the far end and tx power at the SFP and then go to the other far end measure the difference. Fluke is another source for equipment. Some telecommunications like J-Mux (sonnet systems) will have built in device to measure the diode current and make a relative measurement on the tx side. Hope this helps you.


Regards,

Sonny Langhurst
Douglas Public Utility District
Washington State
***@dcpud.org

-----Original Message-----
From: Matthias Nees [mailto:***@bell.de]
Sent: Thursday, July 14, 2011 1:23 AM
To: Enterasys Customer Mailing List
Subject: AW: [enterasys] How to check Optical Power of SFP'S (SFP+)

Hi,

the easiest way to check status of ports/gbic is "sh port status".
With "show port counters" you can check if some errors occur on that port.

I do not know any CLI to check RX or TX Power of an GBIC - if you assume there is an problem with your gbic, try a new one.


Regards,
Matthias Nees

-----Ursprüngliche Nachricht-----
Von: ***@pt.lu [mailto:***@pt.lu]
Gesendet: Mittwoch, 13. Juli 2011 17:08
An: Enterasys Customer Mailing List
Betreff: [enterasys] How to check Optical Power of SFP'S (SFP+)

Hi,

Is it possible to check RX Power of SFP's on Enterasys switches (C5,B5,D2, S4...)?
Which CLI command can I use to check the SFP status?

Regards,
Franco
---
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To unsubscribe from enterasys, send email to ***@unc.edu with the body: unsubscribe enterasys Michael.D'***@dhs.gov

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[l***@pt.lu]

Hi,

Thank you for all suggestions.

I think that this should be a MUST HAVE feature!




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[Aaron Howard]

Lou,

I noticed this feature from competitors when evaluating switches last
year. I was intrigued by the convenience of having this data
dynamically. Especially since our fiber plant records aren't very well
maintained or conveniently accessible.

For me the potential use would be to verify we're operating inside our
signal budget and possibly to detect degraded transceivers, optics or
patch cables. My experience has been that the degraded physical layer
will manifest in rmon errors which on enterasys can be monitored and
generate logs and traps/informs with rmon alarms.

Are there other uses for this feature?

Aaron Howard

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[Lou H. Goddard]

I used to work on a system called Alloptics. We would have 32 ONUs to a PON and something like 16 PONs in a single chassis. It was invaluable to read the optical power on each of the ONUs and it accelerated troubleshooting.

In my case, the ONUs were installed in single family homes. Being able to get inside someone's home with a light meter required some scheduling.

It was also handy to see if we had a bad splice. For example, three ONUs downstream from a splice have poor optical power while the other ones ahead of the splice are within specs.

At my current company, we don't have much need for this feature since we hardly have any fiber.

If the SFP is offering the data why not take it and provide it to the user?

If the list really wants this feature I suggest providing Enterasys with a list of users and contact information. If they see a majority of users requesting this feature they may start working on it.

Thanks,

Lou Goddard

Network Engineer

302-552-8053

***@hbcs.org

----- Original Message -----
From: Aaron Howard <***@uni.edu>
Sent: Sat, 7/16/2011 10:23am
To: Enterasys Customer Mailing List <***@listserv.unc.edu>
Cc: Lou H. Goddard <***@hbcs.org>
Subject: Re: [enterasys] How to check Optical Power of SFP'S (SFP+)

Lou,

I noticed this feature from competitors when evaluating switches last
year. I was intrigued by the convenience of having this data
dynamically. Especially since our fiber plant records aren't very well
maintained or conveniently accessible.

For me the potential use would be to verify we're operating inside our
signal budget and possibly to detect degraded transceivers, optics or
patch cables. My experience has been that the degraded physical layer
will manifest in rmon errors which on enterasys can be monitored and
generate logs and traps/informs with rmon alarms.

Are there other uses for this feature?

Aaron Howard

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------------------ CONFIDENTIALITY NOTICE ---------------

This message, including any attachments, is for the sole use of the
intended recipient(s) and may contain privileged confidential information
protected by law. Any unauthorized review, use, disclosure or distribution
of this message is prohibited. If you are not the intended recipient, please
contact the sender by reply e-mail and destroy all copies of this message.

------------------ CONFIDENTIALITY NOTICE ---------------


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