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xfoxtbat
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RB5009 sfp+ connection problem  [SOLVED]

Thu Apr 14, 2022 8:31 am

HI,ALL:

when connecting to the SFP+ port of the switch with the rb5009 sfp+, the connection failed, and then the router was sent to the Netgear manufacturer for testing.
Image
The response from the manufacturer was that the problem occurred when the MS510TXM continued to send packets to the MitroTik device, but the MitroTik device stopped sending data to the MS510TXM. The results of this test confirmed that it was caused by the MitroTik's 10G SFP+ optical port supporting the EEE (Energy-Efficient Ethernet) feature, while the MS510TXM's 10G SFP+ optical port does not support EEE (the MS510TXM's 10G electrical port does support EEE)



Can rb5009 turn off EEE for testing sfp+ available
 
pw123
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Re: RB5009 sfp+ connection problem

Mon Apr 18, 2022 9:26 pm

This affects all switch does not support EEE on their sfp+. I have Zyxel xs1930-12hp. It does not support EEE on its two SFP+ uplink ports. I experience the same issue. Having an option to disable EEE at mikrotik side would be a solution.
 
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jbl42
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Re: RB5009 sfp+ connection problem

Tue Apr 19, 2022 5:55 pm

According to the 802.3az standard, EEE shall only be enabled if agreed on both ends during link auto negotiation, using a special "next page" for EEE.
Some devices allow to force-enable EEE if auto negotiation is disabled, but this is not conforming to the 802.3az spec.

So either the RB5009 activates EEE although auto-neg off or the link partner does not advertise it, or the link partner advertises it but does not support it. The first would be a bug on RB5009, the latter a bug on the link partner.

But still it would be a good thing to be able to enable/disable EEE on RB5009. Some devices with broken EEE support have link reliability issues when enabled.
 
arfoll
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Re: RB5009 sfp+ connection problem

Wed Apr 20, 2022 5:23 pm

Would be really nice to have a way to disable EEE in hardware, it seems to me very similar to what is happening with the X520 adapters, though I struggle to believe this is doing the 'wrong' thing during 802.3az negociation...
 
rolling
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Re: RB5009 sfp+ connection problem

Wed Apr 20, 2022 5:41 pm

This issue is solved on ROS 7.3beta34.

*) rb5009 - fixed 10G linking issues with Intel X520, XXV710 NICs;

regards.
 
arfoll
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Re: RB5009 sfp+ connection problem

Wed Apr 20, 2022 5:47 pm

This issue is solved on ROS 7.3beta34.

*) rb5009 - fixed 10G linking issues with Intel X520, XXV710 NICs;

regards.
Wow. They could have replied to my bug ticket :D I checked the beta33 release notes but had not checked beta34. I'll check it out thanks.
 
pw123
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Re: RB5009 sfp+ connection problem

Wed Apr 20, 2022 5:51 pm

This issue is solved on ROS 7.3beta34.

*) rb5009 - fixed 10G linking issues with Intel X520, XXV710 NICs;

regards.
Yep. My Zyxel xs1930 is happily talking to rb5009 via sfp+ port now. No more up and down. Great work!

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