Uplink port LED turn orange and connection lost momentarily
I have this TP-LInk Switch connected to some VoIP PBX, handsets and a PC. Its uplink port is connected to a Ubiquiti switch. The PBX system is working normally. But momentarily, the activity LED for the uplink port turns solid orange for a second and then back to normal. When this happens, VoIP calls will drop and the PC experience internet outage during that time. Any idea what does this LED behaviour mean?
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Hi @NBAus
As MR.S explained, the cable is the key. If it degrades to 100Mbps(orange), you gotta check the cable. Though this cable might work on others, we still recommend you swap with a different cable.
The chipset would be sensitive to the signals and if it does not work okay, it would degrade.
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switch it to orange, the link switches to a lower speed, 100Mb. the problem probably lies with your Ubiquiti switch, I have had the same problem many times at Ubiquiti and have had to lock the port to 1GB even though the cable is fine.
so check cable, try locking the port to 1gb on the unifi switch.
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Hi @NBAus
As MR.S explained, the cable is the key. If it degrades to 100Mbps(orange), you gotta check the cable. Though this cable might work on others, we still recommend you swap with a different cable.
The chipset would be sensitive to the signals and if it does not work okay, it would degrade.
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No, the recommended solution doesn't fix the issue.
Tried all these:
1. Swapping multiple cables, even a brand new short 50cm cable. Doesn't help.
2. Fix the port to 1Gb in Ubiquiti switch. Doesn't help.
3. Swap with a TL-SG108PE switch. Same problem.
4. Finally change to an old TL-SG1008MP Ver 1.0 switch without any special config at the ubiquiti switch. It seems okay so far. This is a switch that doesn't support VLAN, not sure if that means anything.
Anyway, definitely a compatibility issue somehow.
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Hi @NBAus
Thanks for posting in our business forum.
NBAus wrote
No, the recommended solution doesn't fix the issue.
Tried all these:
1. Swapping multiple cables, even a brand new short 50cm cable. Doesn't help.
2. Fix the port to 1Gb in Ubiquiti switch. Doesn't help.
3. Swap with a TL-SG108PE switch. Same problem.
4. Finally change to an old TL-SG1008MP Ver 1.0 switch without any special config at the ubiquiti switch. It seems okay so far. This is a switch that doesn't support VLAN, not sure if that means anything.
Anyway, definitely a compatibility issue somehow.
Different switch models are getting different chipset plans. I am not sure if the mentioned models are using the same plan.
Compatibility is possible but would be rare. But if that's the case now, you've swapped with two of the switches, it could be some problems with the UBNT config. Or compatibility.
If you would like to dig into this, I can probably use the model number you have, the UBNT one. I will send an email to the test team and see if they can conclude a specific reason for this.
Second, any of the switches from us would support passing the VLAN-tagged frames which means the unmanaged switch you mentioned can be used in the access layer. It would still work as a part of the VLAN scheme.
It is incorrect to say it does not support VLAN. It doesn't support VLAN config because it is an unmanaged switch.
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