AP Neighbor classification

MVP Expert
MVP Expert
Q:

How neighboring APs are classified?

 



A:
  • In a measurement interval, a neighbor table is created, and neighbors to be reported are inserted to this table. Since the memory is a limited resource, the number of neighbors being tracked is limited by a certain value N (e.g. 100).
  • In a densely deployed environment, high number of neighbors can be detected. The first N neighbors discovered are reported. Note that each neighbor is corresponding to a radio (rather than a BSSID).

 

Each neighbor radio is classified into five types,

Neighbor Types

Neighbor Type

Is Aruba

Is Friend

Friend radio

Yes

Yes

Non-friend Aruba radio

Yes

No

Non-friend Non-Aruba radio

No

No

Unknown Aruba radio

Yes

Unknown

Unknown Non-Aruba radio

No

Unknown

 

  • A friend radio is a neighbor radio which is managed by the same controller managing the reporting radio.
  • A non-friend radio is a neighbor radio which is not managed by the controller managing the reporting radio.
  • If it is not known whether the neighbor radio is a friend or not, the neighbor has the unknown type.

The above table is mainly grouped with the help of Radio-MAC-Aggregation,

  • Radio base mac is used as the key in the neighbor table to aggregate multiple virtual APs. For Aruba radios, the maximum number of BSSIDs (max_bssids) supported by an AP is known by topology discovery OTA frames.
  • If the max_bssids is known, radio base mac is aggregated with known max_bssids value.
  • There are two possible values of max_bssids:8 and max_bssids:16. 

           max_bssids is not known 1) before the first receipt of topology discovery OTA frame or 2) for non-Aruba radios. 

            max_bssids is assumed to be 8 if its value is not known.

Version history
Revision #:
2 of 2
Last update:
‎03-15-2019 01:04 AM
Updated by:
 
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