topic Re: R750's 2.5G ethernet port not working in Access Points - Indoor and Outdoor

R750's 2.5G ethernet port not working

houston_rocket — Wed, 31 Mar 2021 11:34:38 GMT

The 2.5G POE port is plugged on Zyxel XS1930-12HP switch. The switch supports 1G/2.5G/5G/10G, and POE++. The problem is that it is unable to negotiate with the switch at 2.5G speed. I already tried to set the switch port to auto-negotiation or force 2.5G, neither works properly. The only way to work is to set force 1G on the switch port. It seems a compatibility problem. Is it possible to set force 2.5G on AP? "set ethspeed" doesn't work.

Re: R750's 2.5G ethernet port not working

eizens_putnins — Wed, 31 Mar 2021 14:38:03 GMT

Check if cable you are using is good enough to support 2.5G.

With bad Ethernet cable 2.5G may not work at all, even if for 1G speed cable is acceptable. Even short patches often doesn't work properly on higher than 1Gbps. Try Cat 6 patch, or at least 5E FTP patch.

Re: R750's 2.5G ethernet port not working

houston_rocket — Thu, 01 Apr 2021 02:10:41 GMT

The cable is CAT 5E. It was tested with no issue when connecting a 10G NIC.

Re: R750's 2.5G ethernet port not working

eizens_putnins — Thu, 01 Apr 2021 07:02:40 GMT

NIC doesn't use PoE, so it isn't 100% equivalent test for switch port, and I have seen situations when one device connects on 10G on same cable, when another - doesn't, but it definitely make cable a less probable problem.

Set power mode of AP to max, and if still no success - open support cases with Ruckus and Zyxel -- as it probably will be not that simple to fix (and please post results, it is important for community to know about possible issues - multi-gig switches are becoming common).

Re: R750's 2.5G ethernet port not working

christopher_cal — Fri, 09 Apr 2021 18:43:22 GMT

OP Do you have multiple APs that are working on the same type and switch, and only having a issue with this one or is this the only one you have tested with?

Re: R750's 2.5G ethernet port not working

christopher_cal — Fri, 09 Apr 2021 18:44:01 GMT

I only ask as we are having a similar issue with the same model, but we have 80 APs working and negotiating fine, but 2-4 are not.

Re: R750's 2.5G ethernet port not working

eizens_putnins — Sat, 10 Apr 2021 12:37:18 GMT

In this case you need to open support case with both vendors to find out the reason...

Re: R750's 2.5G ethernet port not working

houston_rocket — Wed, 14 Apr 2021 09:33:19 GMT

none of my APs are working properly, only working on 1G

Re: R750's 2.5G ethernet port not working

houston_rocket — Wed, 14 Apr 2021 09:34:54 GMT

They don't have devices to test, so I want to test force 2.5G on AP. Anyone knows a command to set force 2.5G on AP?