Lightspeed Broadband & Unifi URM

Sivivatu

Sivivatu

Sivivatu

Associate
Joined
24 Dec 2024
Posts
2
Location
United Kingdom
Hi everyone,

I'm adding a Lightspeed broadband connection (in the UK) to my existing UniFi system and running into some DHCP configuration challenges. Lightspeed provided IPv6 details but the IPv4 information they gave me includes DHCPv4 Option 80, which isn't available in UniFi's settings.

What I need to know:
  1. Has anyone successfully set up Lightspeed in bridge mode with their UniFi system?
  2. What DHCP settings did you use, particularly for IPv4?
  3. Were any specific UniFi configurations needed to get it working properly?
Current situation:
  • IPv6 is configured correctly based on Lightspeed's provided information
  • IPv4 isn't working due to the DHCPv4 Option 80 requirement
  • Trying to run in bridge mode
  • I have reverted to the standard router mode for the holidays just so the family all has internet :)
If you've got Lightspeed working with UniFi, I'd really appreciate details on your configuration settings.

Thanks!
Sivivatu
 
Unfortunately in the DCHPv4 drop-down menu 80 is not an option at all. It has a fixed list of about 6 different choices.
Is there a way to override the fixed list and select your own option?
 
Avalon said:
Under IPv4, click DHCPv4, it’ll list options and under the option 80 populate whatever data you need in the correct format. See here: https://community.ui.com/questions/...8#answer/1337f9b6-7a91-4077-8e48-35d751c09a30
Click to expand...
Where'd you learn that Option 80 is necessary? Specification for DHCP options suggests that Option 80 takes zero length parameter (empty) and is for "Rapid Commit," which allows a DHCP client to request and receive an IP address and configuration from a server in a faster, two-message exchange instead of the standard four-message process.
So it any client identification/authentication would not be possible via Option 80.

I'm getting Lightspeed soon, and looking to get setup quickly on my Unifi device. I stumbled upon this post. :)

If you got it working, what option did you use?

Ref per spec;
 
Ayymoss said:
Where'd you learn that Option 80 is necessary? Specification for DHCP options suggests that Option 80 takes zero length parameter (empty) and is for "Rapid Commit," which allows a DHCP client to request and receive an IP address and configuration from a server in a faster, two-message exchange instead of the standard four-message process.
So it any client identification/authentication would not be possible via Option 80.

I'm getting Lightspeed soon, and looking to get setup quickly on my Unifi device. I stumbled upon this post. :)

If you got it working, what option did you use?

Ref per spec;
Click to expand...
Specifications and the real world are not the same thing. If you read my post, you'll see I didn't state option 80 was required, I answered a post asking how to specify option 80 parameters, the best known example of them being used would be Sky, who inherited the use of DHCP option 60/61 for auth from it's Easynet buyout in 2005, in short they are a thing and are used by literally millions of Sky broadband customers every day.
 
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Avalon, fair point, specs vs. real world can differ. My mistake in saying you claimed Option 80 was a Lightspeed requirement. I was more just questioning their (Lightspeed's) supposed need for it, given Option 80 is Rapid Commit and takes no auth data. Sky uses options for auth, sure, but typically things like Option 60/61 for the actual client ID strings, not 80 itself.

@Sivivatu When Lightspeed mentioned Option 80, did they give you an actual value or string to send with it? Or just say "you need Option 80"?

If they gave you an auth string (like a username/password or modem ID), it's far more likely it's meant for Option 60/61.

Still trying to get a clear picture for my own Lightspeed setup soon.

I'm going with the assumption that Option 80 was a typo for Option 60, because it seems almost nonsensical to use 80 for this usage. I could be wrong, that's what I'm trying to learn here though :D

Ref Sky's Option 61 usage - more so conforming to spec;

Replacing Sky Broadband hub with third party router

Hey folks, I just tried to upgrade through Sky from the hub to the WiFi max hub but it's not yet available as an upgrade in my area. They said to buy the WiFi max hub from Sky retail shop but I just read that wouldn't let me use the parental features on My Sky app. I'm now looking at buying...
helpforum.sky.com helpforum.sky.com

Re: Are you allowed to use your own router instead of the sky hub ?

Thanks for the info so anything@skydsl|anything Is that correct or do i need to seperate after @skydsl then |anything
helpforum.sky.com helpforum.sky.com
 
andy_mk3 said:
I don't use Unifi but OPNsense with my Lightspeed connection. Using nothing other than DHCP for connection.
Click to expand...
Thanks for replying.

Did you get the ONT + Router (separate devices) or ONT & Router (all-in-one) configuration from Lightspeed in bridged mode?

To clarify, if the ONT (Standalone) + OPNsense, do you pass no client option through for DHCPv4?

As for IPv6, do you have that configured? If so, what prefix is advertised?

Cheers!
 
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Ayymoss said:
Thanks for replying.

Did you get the ONT + Router (separate devices) or ONT & Router (all-in-one) configuration from Lightspeed in bridged mode?

To clarify, if the ONT (Standalone) + OPNsense, do you pass no client option through for DHCPv4?

As for IPv6, do you have that configured? If so, what prefix is advertised?

Cheers!
Click to expand...

I have the Nokia ONT + Router combo. It's in bridge mode.

My config below.

eOibich.png


hPAZVe3.png
 
Ahh okay, my understanding for new customers get a dedicated ONT and a dedicated router.

Meaning this setup likely won't work for me as I'd like to go Unifi GW -> ONT rather than having their bridged modem/router in the way. :(
 
For anyone else switching to LightSpeed and happens to come across this post on Google, or whatever... These are the directives I received from LightSpeed support, which worked on my setup...

Using Unifi Cloud Gateway Fibre.
LightSpeed Assigned Static IP Address.

Code: 
VLAN: 911
IPv4 Config: DHCPv4 (No Client Options)
IPv6 Config: DHCPv6 (/56 Prefix Delegation)

The UCG Fibre is connected directly to the ONT. In my case, it's the Adtran one. The provided Adtran router is not used in this configuration.
 
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