Wireless Access

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Frequent Contributor II

are broadcasts clients see from the other clients or the controller?

I may be asking the most newb question here, but let's say I ran a wireshark capture on a wifi interface and was connected to an SSID many other users use.

 

I see numerous broadcast packets from other clients.  Several thousand per minute, in fact.  Are these broadcasts actually from the clients, ie. a person in the cubicle next to me sends a broadcast and I pick it up, or is it sent to the controller first?

Does the controller re-broadcast these packets? (My belief this is the case) If so, what kind of impact does this have on controller/ap/wireless performance?

Would enabling "Drop Broadcast and Unknown Multicast Traffic" feature under VAP help increase performance?

 

Thank you for any input.  I know it is a relatively newb question to ask, but I'd like to know the way packets like these are processed.

rwin = 0
Guru Elite

Re: are broadcasts clients see from the other clients or the controller?

Broadcasts are from wired and wireless clients. The controller replicates broadcasts to every access point that has a user on the vlan with the broadcasts.

Turning on drop broadcast and multicast will increase performance, yes.

*Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.*
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