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Author Topic: Correct bridge settings for Zyxel and Sky, VLAN ID  (Read 1466 times)

mrbluepig

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Correct bridge settings for Zyxel and Sky, VLAN ID
« on: June 01, 2020, 11:09:59 PM »

I'm finally getting a Zyxel to replace my HG612, as I'm hoping for a bit more speed on my moderate length line (24/25 mbits currently)

I'm going to use the Zyxel in bridge mode, but wasn't sure if I need to enter a VLAN ID (802.1q) such as 101?

I'm going to be using it with Sky fibre. Currently I have a Asus AC68U connected to a HG612 and use option 61, I don't have VLAN IDs set anywhere but maybe they are default as 101 on the HG612?

I found this guide on bridge mode on Zyxel here.
https://support.zyxel.eu/hc/en-us/articles/360001482220-Setting-the-VMG-as-Modem-Bridge-Mode-

Any insight on people using this in bridge mode and with Sky fibre would be appreciated, thanks!
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hushcoden

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Re: Correct bridge settings for Zyxel and Sky, VLAN ID
« Reply #1 on: June 02, 2020, 12:47:23 AM »

I'm going to use the Zyxel in bridge mode, but wasn't sure if I need to enter a VLAN ID (802.1q) such as 101?
Yes, VLAN ID 101 for Sky in the modem (Zyxel)
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burakkucat

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Re: Correct bridge settings for Zyxel and Sky, VLAN ID
« Reply #2 on: June 02, 2020, 01:17:01 AM »

I'm going to be using it with Sky fibre. Currently I have a Asus AC68U connected to a HG612 and use option 61, I don't have VLAN IDs set anywhere but maybe they are default as 101 on the HG612?

There are actually two VLANs configured in the HG612, by default. The HG612 is the end-point for both VLANs, they do not extend over the Ethernet link to the user's equipment. They are tagged 101 and 301, respectively, with the 101 VLAN carrying the service data whilst the 301 VLAN was used for service performance monitoring, administration and firmware upgrading processes. (The infamous BTAgent made use of that VLAN tagged 301.)

When configuring the ZyXEL device, just ensure that you define a VLAN tagged 101 and all will be well.
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mrbluepig

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Re: Correct bridge settings for Zyxel and Sky, VLAN ID
« Reply #3 on: June 02, 2020, 02:17:33 AM »

Thank you both so much for the information and prompt reply on the correct VLAN ID settings.

I'm looking forward to the Zyxel, hopefully it is a step up from my HG612 which is getting a bit long in the tooth, but still stable as a rock.

Do you know why the Zyxel guide suggests disabling the firewall? I thought the bridged mode would have bypassed all of that.
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Alex Atkin UK

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Re: Correct bridge settings for Zyxel and Sky, VLAN ID
« Reply #4 on: June 02, 2020, 10:32:58 AM »

Do you know why the Zyxel guide suggests disabling the firewall? I thought the bridged mode would have bypassed all of that.

Probably just to be absolutely sure nothing is lingering in the background mangling the data.

I didn't do that step though and it seems to work fine as like you said, no firewall rule should apply on the bridge anyway.
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