DR HDMI 8K
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DR HDMI 8K / Glossary / DHCP
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What is DHCP?

DHCP is why most things just work when you plug in an Ethernet cable: your router hands the device an address without you doing anything.

In plain language

Dynamic Host Configuration Protocol. A device joins the network and asks for an address; the router picks a free one and lends it out for a while, along with the subnet mask and gateway.

Why it matters in your setup

The word to notice is lends. A DHCP address is a lease, and it can change — after a power cut, a router reboot or a long absence. For something you visit occasionally that is fine. For something a control system talks to by address, a change means the automation silently stops working.

Two ways out: a static address configured on the device, or a DHCP reservation on the router so it always hands out the same one.

What the DR HDMI 8K does with it

The DR HDMI 8K uses DHCP by default and shows the address it received on its OLED info page. You can switch DHCP off and set a static address, mask and gateway in the CONFIG section — and if a wrong static address ever locks you out, DHCP can be switched back on or a factory reset performed from the OLED menu.

DR HDMI 8K in one line: it is a 48Gbps HDMI 2.1 EDID manager, emulator and repeater that sits between your source and the rest of the chain, so you can see what is being negotiated and decide what the source is allowed to see — instead of guessing which device is at fault. What it is and what it solves →

Related terms

static IP →hostname →mDNS →RJ45 →embedded web server →factory reset →

Read more

Manual: accessing the web server →Manual: IP configuration →

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