Ethernet Switching
Highlighted
Ethernet Switching

EX3400 - SFP/SFP+ link light not showing

‎05-15-2019 12:20 PM

Greetings!  I have a couple of EX3400T running Junos 19.1R1.6 in a virtual chassis.  An extended freatures license is installed on both.  I have a 10Gb sfp+ installed connected to a MX480 router.  The link between the two is up, passing traffic and is running clean with no errors.  Problem is the link lights on the EX3400 do not light up.  Link light on MX480 is up.  Tried this with serveral different optics and even tried it with a 1Gb sfp.  Same results:  Link comes up, runs perfectly but no link light.

 

PIC 2 REV 20 650-059888 NV0218210047 4x10G SFP/SFP+

      Xcvr 0 REV 01 740-030128 G1811063863 SFP+-10G-ER

 

Did something change in 19.1R1.6 so that link lights do not show by default?

6 REPLIES 6
Ethernet Switching

Re: EX3400 - SFP/SFP+ link light not showing

[ Edited ]
‎05-15-2019 12:47 PM

I have an ongoing JTAC case running on the exact same thing, just on EX2300 running 18.1R3-S3 (and -S4). Tried three different switches, both EX2300-24T and EX2300-24P. Same switches had working LEDs while running 15.1X53-D58 and -D59.

 

JTAC has confirmed that they can reproduce the behaviour in their lab and I'm now awaiting if there is a workaround or which release it will be fixed.

 

I would suspect that the same bug has hit your EX3400 running 19.1. Think you should create a JTAC case and refer to case number #2019-0423-0222. I have not received any PR number.


--
Best regards,

Jonas Hauge Jensen
Systems Engineer, SEC DATACOM A/S (Denmark)
Ethernet Switching

Re: EX3400 - SFP/SFP+ link light not showing

‎05-15-2019 12:49 PM

and just to confirm. From the CLI the LED should be active... but nothing when looking at the switch :-)

 

root@ex2300-24p> show chassis led | match xe
xe-0/1/0 Green


--
Best regards,

Jonas Hauge Jensen
Systems Engineer, SEC DATACOM A/S (Denmark)
Ethernet Switching

Re: EX3400 - SFP/SFP+ link light not showing

‎05-20-2019 01:22 AM

Due to other reasons I have also upgraded an EX3400-24T to 19.1R1.6 and can confirm that SFP+ LEDs does not work in this release.

 

I have added this info to the ongoing JTAC case and awaits if they will accept to combine the same issue on the two platforms in the same case.


--
Best regards,

Jonas Hauge Jensen
Systems Engineer, SEC DATACOM A/S (Denmark)
Ethernet Switching

Re: EX3400 - SFP/SFP+ link light not showing

‎05-27-2019 05:32 AM

If others have this issue it's currently tracked at JTAC under PR1428703.


--
Best regards,

Jonas Hauge Jensen
Systems Engineer, SEC DATACOM A/S (Denmark)
Ethernet Switching

Re: EX3400 - SFP/SFP+ link light not showing

‎06-01-2019 03:40 AM

We have the same issue on our three EX3400-24T since upgrading from 15.1X53 to 18.1R3-S4 (and now -S5). On the one hardware I looked at, it only affects our DAC cables, the SFP+-10G-LRM used for Virtual Chassis are lighted correctly.

 

When I try to open the mentioned PR1428703, I get

 

It appears you are searching for a PR which is not available. It could be that the PR number is not valid, or that it refers to a PR which has no externally available content.

Is that expected at this stage?

 

Thanks,

Jonas

 

Ethernet Switching

Re: EX3400 - SFP/SFP+ link light not showing

‎06-02-2019 11:42 PM

I don't think the PR is public in it's current state. That's why you receive this error.

 

I mentioned the PR for others to refer to instead of JTAC starting all over with new cases.

 

Anyway; I know that 18.1R3-S4 is the JTAC recommended but 18.2 or 18.3 should be working just as well and have working LED's - if you don't want to wait for a fixed JTAC recommended version.


--
Best regards,

Jonas Hauge Jensen
Systems Engineer, SEC DATACOM A/S (Denmark)