Zimablade / Zimaos/Casaos network speed

MY ZimaBlade only can work on 100 Mbps, whatever I try, it will only work on this speed. It has it since day one, but now I need some more speed from it and I would like to solve it.

All possible settings on the switch I already tried. It is not the cables. Forcing the ZimaBlade to 1 Gbps makes the connection fail.

Anybody an idea how to solve this?

also mine says 1GBit Ethernet if I Benchmark my Samba Share I get 5-6 MB / sec …. its hopelessy slow

Hi PaulM,

If the ZimaBlade is only negotiating at 100 Mbps and forcing 1 Gbps makes the connection fail, I would first confirm what the NIC is actually reporting from ZimaOS/CasaOS, not just from the switch UI.

Could you please run:

ip link

Then identify the Ethernet interface name, usually something like eth0, enp1s0, etc.

Then run:

ethtool eth0

Replace eth0 with your actual interface name.

The important lines are:

Speed:
Duplex:
Auto-negotiation:
Link detected:

If it shows Speed: 100Mb/s, then the issue is at the physical/link negotiation level: cable, switch port, adapter/NIC negotiation, or possibly a hardware issue.

Also, do not force 1 Gbps unless both sides are happy with it. Gigabit Ethernet normally needs auto-negotiation to work properly. If forcing 1 Gbps kills the link, that usually points to a negotiation or physical layer problem.

For Antonius, 5-6 MB/s over Samba is a different issue if your link really shows 1 Gbit. That would need separate checking, because slow SMB speed can be caused by disk speed, Wi-Fi, the client device, SMB settings, Docker volume path, or the drive mount location. The first step there is also to confirm the real negotiated link speed with ethtool.

Yes was my bad :slight_smile: didnt plug in my netwotk cable and used wifi instead

Speed: 100Mb/s

Duplex: Full

Auto-negotiation: on

Link detected: yes

How can I check if the hardware failure is at the ZimaBlade,I checked everything else.

Hi PaulM,

If ethtool shows:

Speed: 100Mb/sDuplex: FullAuto-negotiation: onLink detected: yes

then ZimaOS is only negotiating a 100 Mbps physical link.

Before calling it a ZimaBlade hardware fault, I would isolate it with a few simple checks:

  1. Try a known-good Cat5e/Cat6 cable directly into the router/switch, not through a wall socket or patch panel.
  2. Try a different switch/router port.
  3. Check the advertised link modes from the ZimaBlade:
ethtool eth0

Replace eth0 with your real interface name.

Look for these lines:

Supported link modes:Advertised link modes:Link partner advertised link modes:

If the ZimaBlade supports/advertises 1000baseT/Full, but the link partner only negotiates 100baseT/Full, it is usually cable, port, or link partner related.

  1. Also check the NIC detected by the system:
lspci | grep -i ethernet

If possible, test the ZimaBlade with another known gigabit switch and another short cable. If it still only negotiates 100 Mbps across multiple known-good cables and ports, then it starts to point more toward the ZimaBlade Ethernet port or hardware side.

I would not force 1 Gbps. If forcing 1 Gbps drops the link, that usually confirms the physical link cannot establish gigabit cleanly.