Fiber Modem / Router (ONT) to Router (AP Mode) Autonegotiation issue

[HNavi]

Hello, this is my summarized Home Network Diagram. 

Hardware Used:

1. Wiring - CAT6 UTP Cable with Closed Ended RJ45 (Self Crimped) from Fiber Modem to Router 2.

2. Fiber Modem (ONT) - Huawei EchoLife HG8245H with 4 Gigabit Port

3. Unmanaged Switch - Tenda SG105 (with 5 Gigabit Ports) - Connected via LAN 2 from Modem and Connected to Passive PoE LAN Port

4. Passive Gigabit PoE Injector and Splitter - Generic (see attached image)- PoE to PoE connection using CAT6 UTP around 60 meters length with some running on outdoor wall (far from powerlines and other electronics)

5. Router 2 (Upstairs Router) - Tenda AC23 - Gigabit WAN and LAN ports (AP Mode connected via WAN from Passive Gigabit PoE LAN port)

Additional Hardware (No Issues)

6. Router 1 (Downstairs Router - besides Fiber Modem) - Tenda AC21 - Gigabit WAN and LAN ports (AP Mode connected via WAN from Modem)

 

Issues:

Configuration 1A - Current Setup. 

With my current setup, the link speed recognized by the Fiber Modem on LAN 2 is 100Mbps Full Duplex Mode. Connected to the Router 1, the speed test (using Ookla) reading (using 5GHz Connection via Android Phone) Exceeded 100Mbps, around 150Mbps+ (Internet limited plan to 100Mbps). Connected to the Router 2, the speed test (using 5GHz) does not exceed 100Mbps around 90Mbps at best. 

 

Configuration 1B - Current Setup after a Power Outage.

Currently the Modem Reported 1000Mbps Full Duplex Mode (due to power outage, all routers restarted) but readings are still similar

 

Configuration 2 - No Gigabit PoE 

With PoE injector and splitter remove, connected directly to Switch and Router 2 (still Port 2 and WAN) the Fiber Modem reports 100Mbps. Results are similar to the Configuration 1A.

 

Configuration 3 - No Switch

Connecting Router 2 (WAN Port) to Modem (LAN Port 2) via Straight CAT6 resulting to the router and modem disconnecting and connecting with a span of seconds (5 seconds at most) with link speed reporting between 10Mbps and 100Mbps Full Duplex Mode. But when the connection is stable at best it is reporting 10Mbps. Tried using Crossover CAT6 using Female to Female RJ45 and Additional Crossover CAT6 with less than 2meter length.

 

Configuration 4 - Connected to Router 1

Connecting Router 2 (WAN Port) to Router 1 (LAN Port 2) via Straight CAT6 resulting to consistent connection with readings at best of around 9 Mbps. Assuming the link speed would be 10 Mbps. No Reporting of LAN Port link speed on the firmware.

 

I would like to know some solutions to my network to use 1 Gbps link speeds for full capacity of the routers, as well as future proofing.

 

Thank you for your help and responds.

Edited April 7, 2023 by HNavi
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