Mailing List Archive

QSA modules and DDM/DOM readings
Hello

is it possible to use a QSA module and get DDM/DOM readings?
Here's a Juniper QFX5100-48T with a QSA adapter. The 10G interface is up and it is forwarding packets, but there are no DOM/DDM readings:

root# run show interfaces terse xe-0/0/52*
Interface               Admin Link Proto    Local Remote
xe-0/0/52:0             up    up
xe-0/0/52:0.0          up    up   eth-switch
xe-0/0/52:1             up    down
xe-0/0/52:2             up    down
xe-0/0/52:3             up    down

{master:0}[edit]
root# run show interfaces diagnostics optics
Physical interface: xe-0/0/52:0
    Optical diagnostics                       :  N/A

Physical interface: xe-0/0/52:1
    Optical diagnostics                       :  N/A

Physical interface: xe-0/0/52:2
    Optical diagnostics                       :  N/A

Physical interface: xe-0/0/52:3
    Optical diagnostics                       :  N/A

What is particularly irritating is that fs.com claims to have DOM support ("DOM Support    Yes") but it doesn't seem to work:
https://www.fs.com/de-en/products/72587.html?attribute=2699&id=221606

I tried QSAs from two different vendors but to no avail. I wonder if anyone has succeded in getting DDM/DOM readings on a QSA adapter. Is it the QFX5100-48T's fault or is it the QSA+SFP Modules that are at fault?

Regards
Karl
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Re: QSA modules and DDM/DOM readings [ In reply to ]
hey,

> I tried QSAs from two different vendors but to no avail. I wonder if
> anyone has succeded in getting DDM/DOM readings on a QSA adapter. Is it
> the QFX5100-48T's fault or is it the QSA+SFP Modules that are at fault?

Works fine on MX10k3 with 19.4R3-S1.3

tarko@x> show interfaces terse xe-0/0/3*
Interface Admin Link Proto Local Remote
xe-0/0/3:0 up up
xe-0/0/3:0.0 up up inet x/31
inet6 x/64
x/64
multiservice
xe-0/0/3:1 down down
xe-0/0/3:2 down down
xe-0/0/3:3 down down

tarko@x> show chassis hardware | match OPCPCH16140148
Xcvr 3 A01 A NON-JNPR OPCPCH16140148 SFP+-10G-ZR

tarko@x> show interfaces diagnostics optics xe-0/0/3:0
Physical interface: xe-0/0/3:0
Laser bias current : 70.504 mA
Laser output power : 1.5650 mW / 1.95 dBm
Module temperature : 28 degrees C / 82
degrees F
Module voltage : 3.3020 V
Laser receiver power : 0.1870 mW / -7.28 dBm


--
tarko
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Re: QSA modules and DDM/DOM readings [ In reply to ]
+1 on a MX10008 as well running 19.4R3.11 using the Mellanox QSA and a 3rd party optic.

Xcvr 1 NON-JNPR WFEXP96L176 SFP+-10G-LR

Physical interface: xe-0/4/1:0
Laser bias current : 39.946 mA
Laser output power : 0.6000 mW / -2.22 dBm
Module temperature : 19 degrees C / 66 degrees F
Module voltage : 3.2580 V
Laser receiver power : 0.7487 mW / -1.26 dBm

David


> On Mar 5, 2021, at 7:01 AM, Tarko Tikan <tarko@lanparty.ee> wrote:
>
> hey,
>
>> I tried QSAs from two different vendors but to no avail. I wonder if anyone has succeded in getting DDM/DOM readings on a QSA adapter. Is it the QFX5100-48T's fault or is it the QSA+SFP Modules that are at fault?
>
> Works fine on MX10k3 with 19.4R3-S1.3
>
> tarko@x> show interfaces terse xe-0/0/3*
> Interface Admin Link Proto Local Remote
> xe-0/0/3:0 up up
> xe-0/0/3:0.0 up up inet x/31
> inet6 x/64
> x/64
> multiservice
> xe-0/0/3:1 down down
> xe-0/0/3:2 down down
> xe-0/0/3:3 down down
>
> tarko@x> show chassis hardware | match OPCPCH16140148
> Xcvr 3 A01 A NON-JNPR OPCPCH16140148 SFP+-10G-ZR
>
> tarko@x> show interfaces diagnostics optics xe-0/0/3:0
> Physical interface: xe-0/0/3:0
> Laser bias current : 70.504 mA
> Laser output power : 1.5650 mW / 1.95 dBm
> Module temperature : 28 degrees C / 82 degrees F
> Module voltage : 3.3020 V
> Laser receiver power : 0.1870 mW / -7.28 dBm
>
>
> --
> tarko
> _______________________________________________
> juniper-nsp mailing list juniper-nsp@puck.nether.net
> https://puck.nether.net/mailman/listinfo/juniper-nsp

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Re: QSA modules and DDM/DOM readings [ In reply to ]
Hi,

Am 05.03.2021 um 15:49 schrieb Karl Gerhard:
> I tried QSAs from two different vendors but to no avail. I wonder if anyone has succeded in getting DDM/DOM readings on a QSA adapter. Is it the QFX5100-48T's fault or is it the QSA+SFP Modules that are at fault?

QFX5100 is not listed to officially support the QSA: https://apps.juniper.net/hct/model/?component=MAM1Q00A-QSA&tab=sPlatforms
Even on QFX5110 it was added as late as 19.4

While the QSA probably did work even before (never tried it in the QFXes) its likely that Code for DOM readings and such might not be in there on that platforms or in your release.

--
Kind Regards
Tobias Heister
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Re: QSA modules and DDM/DOM readings [ In reply to ]
Hello,

thank you very much Tarko, David and Tobias for your helpful replies. I learned something again today.

Regards
Karl

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
*From:* Tobias Heister [mailto:lists@tobias-heister.de]
*Sent:* Friday, March 5, 2021, 6:00 PM
*To:* juniper-nsp@puck.nether.net
*Subject:* [j-nsp] QSA modules and DDM/DOM readings

> Hi,
>
> Am 05.03.2021 um 15:49 schrieb Karl Gerhard:
>> I tried QSAs from two different vendors but to no avail. I wonder if anyone has succeded in getting DDM/DOM readings on a QSA adapter. Is it the QFX5100-48T's fault or is it the QSA+SFP Modules that are at fault?
>
> QFX5100 is not listed to officially support the QSA: https://apps.juniper.net/hct/model/?component=MAM1Q00A-QSA&tab=sPlatforms
> Even on QFX5110 it was added as late as 19.4
>
> While the QSA probably did work even before (never tried it in the QFXes) its likely that Code for DOM readings and such might not be in there on that platforms or in your release.
>

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