Ultra 5 Cable Changes Plan

Redundancy Network

•  Swish LAN Port 1  → 5-port switch/hub
    2-port switch/hub → Ultra WAN Port  New
    2-port switch/hub → tpLink WAN Port New
    
•   Ultra  LAN Port 1 → Switch      Existing
•   tpLink LAN Port 1 → Ultra WAN2  Existing
•   tpLink LAN Port 2 → Switch           New

Since Stick PC runs Windows 11, we can assign two IP configurations for the same Ethernet connection:

1. Primary (Ultra Active)
•   IP: 192.168.4.4 (Static)
•   Subnet Mask: 255.255.255.0
•   Gateway: 192.168.4.1 (Ultra)
•   DNS: 8.8.8.8
2.  Alternative (Failsafe for tpLink)
•   IP: 192.168.4.11 (Static)
•   Subnet Mask: 255.255.255.0
•   Gateway: 192.168.4.254 (tplink)
•   DNS: 8.8.8.8

👉 How to set this up in Windows:

•  Go to: Control Panel → Network and Internet → Network Connections
•   Right-click Ethernet adapter → Properties
•   Select: Internet Protocol Version 4 (TCP/IPv4)
•   Click Properties
•   Set the first (Ultra) IP manually
•   Click Advanced
•   Add a second (tplink) IP address
•   Add the second gateway as well

✅ Benefits:

•  The Stick PC will always have an IP, regardless of which router is active.
•   No manual intervention needed to change IP addresses when Ultra fails.
•   You can still enable tplink DHCP in emergencies and everything will work automatically.

Revised Dual IP Setup for the Stick PC

If tplink’s LAN range is 192.168.40.0/24 (matching Ultra’s WAN subnet):

Primary (Ultra Active)

•  IP: 192.168.4.1 (Static)
•   Subnet Mask: 255.255.255.0
•   Gateway: 192.168.4.1 (Ultra)
•   DNS: 8.8.8.8

Fail-safe (tplink Active) - WAN from Fibre network.

•  IP: 192.168.40.10 (Static)
•   Subnet Mask: 255.255.255.0
•   Gateway: 192.168.40.1 (tplink)
•   DNS: 8.8.8.8

How This Works: needs update

•  When Ultra is active, the Stick PC uses 192.168.4.x and Ultra’s gateway.
•   If Ultra fails, tplink’s 192.168.40.x subnet kicks in, and the Stick PC can reach tplink.
•   This works because tplink’s LAN is Ultra’s WAN subnet, so the Stick PC is always in a routable network.

✅ No manual changes needed! The Stick PC will have a usable IP in both scenarios.

Key Points to Confirm

1. Is tplink’s LAN subnet definitely 192.168.40.0/24? Yes
2.  Does Ultra get a WAN IP from tplink in this range? ?
•   If Ultra’s WAN is on 192.168.40.x, this plan works perfectly.

🚀 What This Solves

✔ Stick PC never loses access, even if Ultra dies.

✔ No need to manually enable tplink DHCP in an emergency.

✔ Works automatically without extra intervention.

August 25, 2025

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Ultra 5 Cable Changes Plan

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