SG300 in a boot loop because of SFP

[Fred_vBrain]

Dear all,

I'm using a SG300-52 with firmware 1.4.11.4 and Ubiquiti SFP Multinode 1G modules. This configuration was now working for the last 2.5 years. Yesterday for what ever reason the SG300 keeps booting all over again. After I found a PC with a serial port I saw this in the logs and on the console.

%SYSLOG-F-OSFATAL: NETP_l2_fiber_set_speed: failed to set speed ***** FATAL ERROR ***** Reporting Task: BRMN. Software Version: 1.4.11.4 (date 02-Dec-2019 time 00:24:26) 0x16aee8 0x16b44c 0x16700c 0x77f2b4 0x7e55a4 0x7e5a54 0x7fe264 0x803d7c 0x6ae04c 0x1223f0

Anyone seen this before? How can a failed to set speed on the SFP lead to such fatal error? It happens with both SFP ports. Not sure if the GBIC is defect but both SFP would be a big coincidence.

Cheers,

Fred

[Fred_vBrain · Accepted solution]

Could this config be the problem. I would guess so. TBH I don't know why it shows "speed 10". In the GUI it's set to Auto-negotiation.

interface Port-channel1
speed 10
description Uplink-Ubiquiti
switchport trunk allowed vlan add 10,20,40-41,70,90,100,110,120
switchport trunk native vlan 125
!
interface Port-channel2
description Uplink-SG200-OG
switchport trunk allowed vlan add 10,20,40-41,70,90,100,120
switchport trunk native vlan 125
!
interface Port-channel3
description DS918
switchport trunk allowed vlan add 10,70,90,125
!
interface Port-channel4
description Uplink-SLM2008
switchport trunk allowed vlan add 10,20,40-41,70,90,100,110
switchport trunk native vlan 125
!
exit

[Fred_vBrain]

Yes the speed 10 was the problem. OMG.