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Forum Discussion
Troubleshooting Unstable 10GBASE-SR Connection (M4300 - M4200)
I have a M4300 connected to a M4200 with two 10GBASE-SR transceivers of the same model. They are these by 10Gtek. I've never had a problem with their stuff before.. in fact I find them quite good. ...
Well,
The link was stable for over a day.. and then today it acted up again...
When it happens, I get a log message on the M4300 "SFP interrupt received on the unit" message.
I pulled the SFP from the M4200 and it was VERY hot. Is it possible it is overheating?
Hi
You are actually using 10GBASE-T as 10GBASE-SR stands for multi mode fiber. And yes, they can run quite hot.* If frequent connect/disconnect is a issue like you wrote, I'd look out for a DAC instead. But at your length an AOC (active optical cable) could also be worth a look, they seem to be cheaper than DACs given the 40ft (12m) length you need.
Hope that helps a bit in your decision making. I don't have any M4200 but they seem to be rather compact units thus likely are not equipped with powerful fans to get the heat away from these toasty modules while generally speaking most M4300 have more powerful (noisier) fans so that might not cause any problems there.
* As even confirmed by servethehome in their review: https://www.servethehome.com/10gtek-asf-10g-t-10gbase-tx-sfp-to-10gbase-t-module-review/
Yeah I realize it is -T.. it was late and the switch reports it as -SR. Could the heat be what is causing the problem?
I can't use a DAC or AOC because this is a portable desk and needs to be disconnected frequently. The two switches are not in the same room. I chose copper because I don't want the client to have to clean fiber connections with every plug-in (several times a week).
I am sorry for this issue -
I am afraid the third-party transceiver isn't supported well because it doesn't announce itself correctly to the switch under the switch normal operating conditions (heat could be a factor, others too such as bad EEPROM identification or communication, etc.)
NETGEAR designs and tests its switches with NETGEAR modules, and vice versa.
NETGEAR policy is to use NETGEAR modules when third-party modules are determined to cause a problem.
It would be a good thing to use a NETGEAR module here, could you test the AXM765 10GBASE-T transceiver?
Regards,
muzicman82 wrote:When it happens, I get a log message on the M4300 "SFP interrupt received on the unit" message.
The SFP(+) I2C link is flapping why ever - heat is well possile on these -T modules.
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