Status Page Weirdness
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adairw - Associate
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Re: Status Page Weirdness
Makes sense to me now. I am about to head up to the data center and will pull the SFP and see if things return to normal. I bet they do.
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sirhc - Employee
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Re: Status Page Weirdness
We are looking into this further to see if there is anything we can do in software to correct this issue.
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sirhc - Employee
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Re: Status Page Weirdness
OK this is NOT the fault of the SFP module but rather our fault, we did not do enough homework on this.
So normally SFP modules use address 50 on the I2C bus to report the module manufacturer and media type but some fiber modules also use address 51 for DOM (Digital Optical Monitoring) or DDM (Digital Diagnostic Monitoring).
If your fiber module supports DOM or DDM then it will interfere with our current and voltage sensor readings.
We are making a change to the boards in production now and future production runs to move this communications address from 51 to 52 and we are looking to see if there is anything we can do in software to disable the SFP DOM / DDM on address 51 for the several hundred boards already made and out there.
I am sorry, we made a mistake.
So normally SFP modules use address 50 on the I2C bus to report the module manufacturer and media type but some fiber modules also use address 51 for DOM (Digital Optical Monitoring) or DDM (Digital Diagnostic Monitoring).
If your fiber module supports DOM or DDM then it will interfere with our current and voltage sensor readings.
We are making a change to the boards in production now and future production runs to move this communications address from 51 to 52 and we are looking to see if there is anything we can do in software to disable the SFP DOM / DDM on address 51 for the several hundred boards already made and out there.
I am sorry, we made a mistake.
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Dave - Employee
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Re: Status Page Weirdness
rats, in this case the "WE" is Dave, future boards will have a work around that will cover any SFP address should SFP manufacturers add more I2C address for further use in the future...again this only affects the dual stack SFP modules (12 port 13/14 & 24 port 25/26)
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adairw - Associate
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Re: Status Page Weirdness
Cool. Looks like we are all learning here.
I did remove the SFP and the switch started behaving normally.
My only other concern is that the SFP module didn't work. The Tik never saw it linked up like the WS did. The Tik did know that the SFP was installed, just no link.
I did remove the SFP and the switch started behaving normally.
My only other concern is that the SFP module didn't work. The Tik never saw it linked up like the WS did. The Tik did know that the SFP was installed, just no link.
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sirhc - Employee
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Re: Status Page Weirdness
I do not remember are you using firmware v1.0.4 ?
If not you should upgrade as we had a fix where we are not setting the MTU properly on the SFP ports not that this is necessarily your issue.
If not you should upgrade as we had a fix where we are not setting the MTU properly on the SFP ports not that this is necessarily your issue.
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josh - Associate
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Re: Status Page Weirdness
Dave wrote:rats, in this case the "WE" is Dave, future boards will have a work around that will cover any SFP address should SFP manufacturers add more I2C address for further use in the future...again this only affects the dual stack SFP modules (12 port 13/14 & 24 port 25/26)
Did a manufacturer just admit they were wrong about something, apologize, and then promise a fix?
I think my brain just exploded.
Is this the apocalypse?
People rising from the grave...
cats and dogs living together...
mass hysteria!
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adairw - Associate
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Re: Status Page Weirdness
I posted this over in my SFP thread also:
Just tested a Maxx wave MW-LX-SM-US and a Mikrotik S-31DLC20D in the WS and both of them caused the switch to display the wattages as 0 and sometimes negative numbers.
Unfortunately I don't have a SM LC to LC patch cable to see if these will link up or not.
Just tested a Maxx wave MW-LX-SM-US and a Mikrotik S-31DLC20D in the WS and both of them caused the switch to display the wattages as 0 and sometimes negative numbers.
Unfortunately I don't have a SM LC to LC patch cable to see if these will link up or not.
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sirhc - Employee
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Re: Status Page Weirdness
More than likely because they support DOM or DDM as mentioned above, we are correcting this on the next board rev currently in production to support those SFP modules.
Pretty much any Cisco compatible FIBER SFP module we have tested here at my WISP that does not support DDM or DOM seems to work fine.
For now you just have to use Cisco compatible SFP modules that do not support DDM or DOM.
Pretty much any Cisco compatible FIBER SFP module we have tested here at my WISP that does not support DDM or DOM seems to work fine.
For now you just have to use Cisco compatible SFP modules that do not support DDM or DOM.
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