Guest Network DHCP broken on Archer VR1210v V2

Guest Network DHCP broken on Archer VR1210v V2

Guest Network DHCP broken on Archer VR1210v V2
Guest Network DHCP broken on Archer VR1210v V2
a week ago
Model: Archer VR1210v  
Hardware Version: V2
Firmware Version: 0.12.0 2.0.0 v606e.0 Build 231113 Rel.47602n

I have an Archer VR1210v V2 set up with a VDSL connection for the WAN and the LAN set up with the router on 192.168.1.1 (default mask of 255.255.255.0 and DHCP IP pool 192.168.1.100-192.168.1.249).  The 2.4GHz and 5GHz WiFi is set up with Band Steering enabled and everything works so far - WiFi clients can connect to the LAN and internet and are successfully given DHCP addresses from the pool.

 

However, I cannot get the Guest Network feature to work.  When enabled, clients can see the corresponding guest SSID but when they attempt to connect to it, they successfully authenticate but are not given a DHCP address.  They then either disconnect or remain connected with a 169.254.x.x address (i.e. no DHCP address available).  Presumably they should be issued an address from a separate DHCP pool to that of the primary 192.168.1.x subnet but this doesn't happen.

 

I have noted that in the help page for the Guest Network, there are features referred to that are not displayed in the web UI of the VR1210v (tested on both Chrome and Safari):

 

- Allow Guests to Access My Local Network
- Allow Guests to Access My Local USB Storage
- QoS Settings

 

Only the "Allow Guests To Access Each Other" is shown and it makes no difference whether it's checked or not - clients are still not given an DHCP address when connecting to the guest network.

 

[As an aside, I have found that using the Developer Tools feature of Google Chrome, the missing settings are included in the rendered HTML, as divs with id="AccessLocal", "USBStorage", etc but given a CSS class of "nd" which causes them to not be displayed - this is presumably a separate bug]

 

As a workaround, I have found that the Multi-SSID feature of the VR1210v can be used to create a separate SSID for guests, instead of using the Guest Network feature.  When enabled, guest clients are able to successfully join this network and are given a 192.168.33.x address via DHCP, i.e. from a different subnet to the primary 192.168.1.x LAN, and as far as I can tell are not addressable from the primary LAN and presumably cannot access other clients on the primary LAN.  Isn't this what the Guest Network feature should do?

 

So my questions are:

 

1. Is it possible to fix the DHCP problem on the Guest Network feature, so clients are given IP addresses when they connect (presumably from a different pool to the primary LAN), without giving them access to clients on the primary LAN subnet?

 

2. In the meantime, does the Multi-SSID feature definitely provide the same kind of isolation from the primary LAN subnet as the Guest Network should, if it worked? (I don't want guest clients to have any access to any clients on the primary LAN, connected via WiFi or wired ports)

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#1
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7 Reply
Re:Guest Network DHCP broken on Archer VR1210v V2
a week ago - last edited a week ago

  @AlanL 

 

In general configuring the guest network should be a straight forward process described here.

There's no need for configuring an additional DHCP server pool for guest networks.

Since you DSL modem router is with a customized firmware for ISPs you may check with yout ISP regarding this issue.

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#2
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Re:Guest Network DHCP broken on Archer VR1210v V2
a week ago

@terziyski thanks for your reply.

 

In this case the VR1210v was purchased directly from Amazon, rather than supplied by an ISP, and then configured with my ISP's VDSL settings to connect it to their network.  However, I've made no other customisations to the configuration and the Guest Network feature is broken from the start, after factory resetting it.

 

I agree that the guest network should be straightforward and require no need for configuring DHCP (the VR1210v should do that automatically) but for whatever reason it isn't working, so I suspect a bug in this firmware, which could also be related to why the other settings are missing from the Guest Network configuration page, even in the Advanced section (see attached screenshot).

 

The guest network definitely gets created and clients can authenticate to it but, unlike if I create a second SSID via the Multi-SSID feature, they don't get assigned a DHCP address, so I suspect something isn't right in the configuration behind the scenes.  The Multi-SSID feature works as it should and the DHCP server issues addresses from a separate pool starting with 192.168.33.100 (at least it does for the MSSID1 (I've not tried using MSSID2 but I suspect that also works).

 

Do you know if there is any later firmware available for the VR1210v V2 that might address this? (later than 0.12.0 2.0.0 v606e.0 Build 231113 Rel.47602n)

File:
Screenshot 2025-04-14 at 14.23.05.pngDownload
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#3
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Re:Guest Network DHCP broken on Archer VR1210v V2
a week ago

  @AlanL 

 

That's the issue with the ISP provided devices - the community doesn't support them, hence you can't find a newer FW release or a support page.

It seems that on the Italian support portal there's a newer FW release - here, but no one can give you a garantee if it would be better than the current you have.

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Re:Guest Network DHCP broken on Archer VR1210v V2
a week ago

@terziyski 

 

 

A bit frustrating to find there's no support for it, as it was supplied from Amazon, not an ISP but I guess they're reselling something that might have otherwise been supplied via an ISP.  Amazon certainly won't be any help!

 

Thanks for pointing me to the later firmware on the Italian support site.  I can certainly give that a go, however, if I upgrade to that version, do you know if it will be possible to downgrade again to the version it's currently running (which is seemingly available via the Spanish support site here), in case the new version makes anything worse?

 

(i.e. does the router care whether the firmware is earlier/later or will it only upgrade to a newer version?)

 

Thanks again for your help!

 

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#5
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Re:Guest Network DHCP broken on Archer VR1210v V2
a week ago - last edited a week ago

  @AlanL 

 

Can't say, cause I have no experince at all with this device model.

If I have to make an educated guess, I would say that you should be able to downgrade FW if you want.

If things go south, you can always contact your locat tech support - pretty sure they'll come up with something.

I would start with  Archer_VR1210vv2_0.13.0_2.0.0_UP_BOOT_agc3000(240429) from the Spanish support portal.

Also make sute that Operation mode of the device is DSL modem router mode.

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#6
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Re:Guest Network DHCP broken on Archer VR1210v V2
a week ago

@terziyski

 

It looks like the firmware names are pretty arbitrary, so likely there's no version validation involved, as you say.

 

I'll download the two firmware files and find a convenient time to experiment with the one from the Italian site.  I noticed there's also another firmware on the Spanish site, with a release date somewhere between the two, that I could also try.

 

Thanks again - your help is much appreciated.

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#7
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Re:Guest Network DHCP broken on Archer VR1210v V2
a week ago

Just to follow up on this, in case it's of help to anyone else, I can confirm that the Archer_VR1210vv2_0.13.0_2.0.0_UP_BOOT_agc3000(240429)_2024-04-30_11.04.40 firmware (the one shared on the Spanish TP-Link support site here) does fix the Guest Network DHCP issue.

 

Clients connecting to the Guest Network are correctly assigned IP addresses (from the 192.168.33.xx subnet, if you've not got any other Multi-SSID networks configured) and the feature works as expected.  The additonal missing settings for the Guest Network, that I mentioned in my original post, are still not shown but at least the guest network is usable.

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#8
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