On the AP side, we define DBS / TBS as follows:
DBS - Dual Band Simultaneous - having 2 bands supported at any given time (i.e. AP535)
TBS – Tri-Band Simultaneous – having 3 bands supported at any given time (i.e. AP635)
On the client side – most clients are dual band, but can't operate on both bands at the same time.
The new QC chipsets can operate on 2 bands at the same time - hence they can be defined as DBS.
Indeed, in high level it seems like a pre-MLO feature, but it does not require any unique support from the AP side. The reason is that the 2 links (i.e. 2.4GHz and 5GHz ) are completely separated and the AP sees the DBS STA as 2 unique clients which have different MAC and IP addresses.
This means no special logic / optimization is applied on the AP side between the 2 links.In summary, I guess you could say the Aruba APs fully support DBS and TBS ;-)
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