460-G2 10gig vim won't run 1gig??

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  • Updated 3 years ago
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We just completed an install of 460-G2s mostly the 10g version. On multipule switches we found we were not able to get 1gig links to come up on the 10gig vim modules.

We are running code summitX-15.6.2.12-patch1-1.xos

The intent was to bring the stacks up at 10g on LRM optics which is why we have the vims. As we have seen before with older fiber even LRMs and Modals would not get the links to come up at 10g. It was when we tried to fail back to 1gig that we discovered the problem.

We do have 1 switch running two 1gig links off the vim but we have 3 or 4 switches that would not bring up the 1gig link unless we moved the optics to the front ports.

Any assistance would be appreciated. 
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David Coglianese, Embassador

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Posted 3 years ago

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Drew C., Community Manager

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Hi David,
Can you share the exact switch and VIM models?  If you can also share the output of show port xx transceiver information detail, where the port number a port with the 1G optics.  We should be able to test this in the lab and get back to you.
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Slot-1 ADM-MC.1 # sho verSlot-1      : 800552-00-06 1538N-xxxxx Rev 6.0 BootROM: 1.0.2.1    IMG: 15.6.2.12 
Slot-2      : 800552-00-06 1538N-xxxxx Rev 6.0 BootROM: 1.0.2.1    IMG: 15.6.2.12 
X460-G2-VIM-2X-B-1: 800556-00-03 1511N-xxxxx Rev 3.0
X460-G2-VIM-2X-B-2: 800556-00-03 1511N-xxxxx Rev 3.0

The 1 gig sx optics do not support DDMI

The above closet connects to the three closets listed below.
___________________________________________________________________________
Slot-1 ADM-IC1.1 # sho verSlot-1      : 800552-00-06 1538N-xxxxx Rev 6.0 BootROM: 1.0.2.1    IMG: 15.6.2.12 

X460-G2-VIM-2X-B-1: 800556-00-03 1511N-xxxxx Rev 3.0

The 1 gig sx optic does not support DDMI
___________________________________________________________________________
Slot-1 ADM-IC2.1 # sho verSlot-1      : 800552-00-06 1538N-xxxxx Rev 6.0 BootROM: 1.0.2.1    IMG: 15.6.2.12 

X460-G2-VIM-2X-B-1: 800556-00-03 1511N-xxxxx Rev 3.0

Media Type            : SX (Industrial Temperature)     Vendor Name           : WTD              
    Part Number           : RTXM191-552      
    Serial Number         : BP131701940138   
    Wavelength            : 850 nm
___________________________________________________________________________
Slot-1 ADM-IC3.1 # sho verSlot-1      : 800552-00-06 1538N-xxxxx Rev 6.0 BootROM: 1.0.2.1    IMG: 15.6.2.12 

X460-G2-VIM-2X-B-1: 800556-00-03 1511N-xxxxx Rev 3.0

Slot-1 ADM-IC3.2 # sho port 1:50 trans in de
Port :  1:50     

    Media Type            : SX      
    Vendor Name           : FINISAR CORP.    
    Part Number           : FTRJ8519P1BNL-EX 
    Serial Number         : P9F04JL          
    Wavelength            : 850 nm


I believe that covers all the information you requested.
(Edited)
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Alexandr P, Embassador

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I think, first question have to be - is 10gig VIM module support 1gig speed?
Because in Data_Sheet and HW_Install_guide there is no information that this VIM can work in 1gig.

Thank you!
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Drew C., Community Manager

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David,
As soon as I can get the gear together, we're going to test it.  Full disclosure, we've got some pretty nasty weather coming our way tomorrow and it may be next week before it can be tested in my lab... :-\
I'm hoping its something that is fixed with an upgrade though.
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Thanks Drew,

I saw that storm on the news this morning and it does look nasty. Best of luck with the weather.

I have already been testing in our lab and have not been able to recreate the problem. I have tested about 8 different sx optics.

Differences are we have older switches and a new code version loaded. I am working to dumb this stack down but got locked out due to the password hash changes.
Also I cannot recreate the building fiber, but that should not be a factor because they are running on the same fiber on the front ports that would not work on the VIM.

* X460G2-48p-G4.4 # sho verSwitch      : 800607-00-04 1503N-xxxxx Rev 4.0 BootROM: 1.0.2.1    IMG: 16.1.1.4  
X460-G2-VIM-2X-B-1: 800556-00-03 1448N-xxxxx Rev 3.0
PSU-1       : Internal PSU-1 800562-00-05 1503A-xxxxx

Thanks
(Edited)
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Brandon Clay, Escalation Support Engineer

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Everything I can find indicates that this should work. Hopefully this is something that can be fixed with an upgrade, but we'll see what Drew finds in his testing.

-Brandon
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I am about out of testing options. I have downgraded both my test switches to 15.6.2.12 the VIMs are the same revision as the ones in production. The only difference left is that one of the switches I am testing with is the 1gig version and mine are both rev4 apposed to the rev6s in production.
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Drew C., Community Manager

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David, all of my X460G2s have been tied up and I haven't been able to test this yet.  That said, it sounds like you've done a lot of testing on your own.
It's probably best to open a case with GTAC so this can be properly investigated.
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I got a little busy and forgot to update this.

I pulled out a 2nd X460g2 put the vim card in and tried to bring up a 1gig link with no success. I tried various sfp+  and that did not make a difference.

We unplugged 2 of the 460s we were testing with and swapped their VIM cards, in the hopes that the problem with follow the card or stay with the switch. Unfortunately the problem was resolved. We moved the VIMs back to there original switches and still everything brought up the 1gig links without fail. 

I have re-seated the VIMs a second time and everything still works "in the lab"

Testing will continue when I get more time.

We got side tracked testing the functionality of LRM optics. We are waiting to hear if the EDC that takes place in the PHY gets switched on and off depending on the optic detected by the switch.

Thanks for looking into this. I will definitely open a case if I am able to reproduce the failure of the 1gig link.
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EDC update:

We did were informed that EDC is not turned on an off but its configuration is changed depending on the optic that is inserted in the port.