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Forum Discussion
Switch GS748Tv4H2 and unable to connect to QNap TS-473A directly
I have a weird situation, before used QNAP TS-469L for manage my network backup connected directly to my GS748T, I had to switch the NAS for EOL matter and I then choose a more faster model as in object, the funny things is I first configure the NAS in my office connected to a normal switch TP-LINK then I finish the configuration and after turn the other NAS off I only switch the CAT6 network cable and fire on my new NAS and it seem unable to turn on the network connection between switch and NAS ! I did try other ports, other cat cables, but the funny things is it work if I put another switch at the end of the cable connected to the port of the GS748T and then another cable from that switch to the QNAP ! Magically it start to work the network and light on nas turn on too. How would I fix it ? Not tell me I have to change switch too because I love my GS748 !
9 Replies
Welcome to the Community!
It might be an auto-negotiation issue with the switch. Your new QNAP has 2.5GbE ports right? It may be having a hard time negotiating it's port speed. There are some cases that a different switch will be handling the negotiation more efficiently than the others. This only happens when connecting your QNAP right?
Have you tried changing the port negotiation setting to manual? The GS748T might be having an issue with the port speed negotiation. You may want to try setting a port to negotiate with 100Mbps or 1000Mbps manually to check if it will provide a DHCP address once the QNAP is connected directly on the GS748T. or if you don't have a saved configuration on the switch a quick factory reset might help.
If you have tried this already but still not getting an address when connected on the switch, it would be best to contact support so they can check on the switch issue.
Hope this helps!
Thank you for the reply, yes as ending test I did set manually the port speed to 100m duplex (why can't set to 1000 duplex manually if it's a gigabit ?) and the NAS lan work properly but I totally unpleased by this because what's the point to have a fast Nas on a slow managed and not surely cheap switch ?? I could not start any support call because the switch it's out of warranty but I think then I will look around for another model that has not this kind of problems.
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