WS no UI Discovery reply over VLAN trunk

[JustJoe]

Let's face it, Ubiquiti always has a way of "accidentally" breaking any other vendor from being compatible with one of their features. I am sure it takes a lot of Netonix time to out-guess them.

But I like good old Ubiquiti Discovery tool. It's easy and informative to use. At least the PC version that doesn't try to screw with the WS-xx-www-xx device type still plays nice.

What I am reporting here is that with Ubiquiti Discovery enabled on each WS, (let's say v1.5.6) I can run the tool against the WS and it will display it and all of the UI devices attached to it.

If the first switch then has a second WS directly attached on the same VLAN, again both WSs and all their attached UI radios are listed.

BUT if the two WSs are connected via a T trunk port ... the closest one to the PC shows up, all the UI devices across on the common VLAN on both WSs show up the way they should...

But alas, the second WS itself does not show up on the PC list over the trunk. :(

[Stephen]

Hello JustJoe,

To make sure I understand what you're saying:

|PC | <===> | port 2 (vlan1, U) WS-A port 1 (vlan 1, U) | <=====> | port 1 (vlan1, U) WS-B |

With the above setup, the PC discovery tool is able to see the discovery broadcasts of both WS-A and WS-B but:

|PC | <===> | port 2 (vlan1, U) WS-A port 1 (vlan 1, T) | <=====> | port 1 (vlan1, T) WS-B |

Now the Discovery Tool on the PC is only able to see WS-A.

Is that correct?

[JustJoe]

Hello JustJoe,

To make sure I understand what you're saying:

|PC | <===> | port 2 (vlan1, U) WS-A port 1 (vlan 1, U) | <=====> | port 1 (vlan1, U) WS-B |

With the above setup, the PC discovery tool is able to see the discovery broadcasts of both WS-A and WS-B but:

|PC | <===> | port 2 (vlan1, U) WS-A port 1 (vlan 1, T) | <=====> | port 1 (vlan1, T) WS-B |

Now the Discovery Tool on the PC is only able to see WS-A.

Is that correct?

Hi Stephen, yes, that is exactly correct. :)

And it is not only the "infamous" VLAN1 , but any VLAN ID.

Also, in either of your examples, the all actual ubiquiti devices on any of the other ports of WS-B in VLAN1 are visible to the PC.

[Stephen]

Understood, thanks for the additional details.

I've added it to my list of things to look into.

[JustJoe]

BTW I chuckle when sometimes running UI Discovery from one of their radios GUIs ...

I have seen some of their model-firmware versions will insult the WS by displaying it as a frickin' "ToughSwitch"

... that should be grounds for a defamation of character lawsuit ! ;)

[Stephen]

have seen some of their model-firmware versions will insult the WS by displaying it as a frickin' "ToughSwitch"

Now I've gotta see that for myself

[JustJoe]

Arrrrgggg

[Stephen]

That's great