SFP GBIC ODI (RTL8672) - Fiber-Free Web Interface Access

[espetoet]

Could someone tell me if this behavior is a defect or a hardware limitation? I have two ODI DFP-34X-2C2 modules (one of them being revision DFP-34X-2IY3) with Realtek RTL8672 chipsets, purchased from AliExpress.

I use the modules in a MikroTik hEX S (RB760iGS) with RouterOS version v7.x.

The problem: I can access the web interface and Telnet normally while the fiber is connected and has a signal (synchronized). However, if I disconnect the fiber, I immediately lose access to the module and cannot even ping the IP 192.168.1.1.

My question: Is this normal for this chipset? Is there any Telnet command or MikroTik configuration to keep the module's LAN interface always enabled, allowing access even without a fiber signal?

[zhijianglee]

Yes. You need to connect the fibre to so called "activate" the module.

[AAFOptimus]

Try selecting the "Ignore Rx LOS" option.

[espetoet]

I've already marked this option. If mikrotik has a problem with the hex version of it not activating.

https://forum.mikrotik.com/t/sfp-ignore-rx-los-doesnt-stick-and-what-exactly-does-it-do/175620

[wellfernandes]

I have the same DFP-34X-2IY3 module; did you find a way to keep the module active, or does it only work when the fiber is connected?

Another question: did you ever use it in bridge mode?
I'm trying to configure it as a bridge — passing the VLAN through for the router to handle — but I haven't had any success with this module.

[AAFOptimus]

I have the same DFP-34X-2IY3 module; did you find a way to keep the module active, or does it only work when the fiber is connected?

Another question: did you ever use it in bridge mode? I'm trying to configure it as a bridge — passing the VLAN through for the router to handle — but I haven't had any success with this module.

I keep the ODI in transparent mode, passing the VLAN to the MikroTik.

[wellfernandes]

That is exactly what I am doing.
The problem is actually with the fiber synchronization.
What is the latest firmware for this module?

[wellfernandes]

I managed to resolve the VLAN issue using an older firmware version.. it also fixed the synchronization problem with the ISP's OLT.
Thanks!!