PCF or just DCF in Cisco AP ?

Unanswered Question
Aug 26th, 2002
User Badges:

Hi !


I was reading the IEEE 802.11 spec and now i'm wondering if the Cisco APs do PCF (Point Co-ordination Function) or just use DCF (Distributed Co-ordination function)

I was unable to find anything in the Docs or on the AP interface...


Thanks for any input


Michael

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
jorge_lopez Wed, 09/04/2002 - 01:16
User Badges:

Hello Michael. I have the same doubt as you. After searching in several sites I think I have one answer that may be right (but not sure :( ). You can set up a RTS packet size treshold. I thhink DCF is based on RTS/CTS, so PCF will be used when packets are smaller than the treshold, and DCF when are bigger. Using a tresshold of 2400 disables de DCF function. I'm not sure, so if anyone has more accurate information, please, tell us



bmcmurdo Wed, 09/04/2002 - 09:07
User Badges:
  • Cisco Employee,

PCF is not implemented on Cisco APs. PCF is not generally thought to be a very effective/useful QoS technique


The radio Access Point (and radio firmware) are "PCF aware" meaning if they

detect a PCF coordinator they will "play nice" in that area and back off a

little so it can do it's best effort.


IEEE 102.11e working group is currently working on a QoS standard but that has not yet been ratified.


Actions

This Discussion

 

 

Trending Topics: Other Wireless Mobility

client could not be authenticated
Network Analysis Module (NAM) Products
Cisco 6500 nam
reason 440 driver failure
Cisco password cracker
Cisco Wireless mode