Changes between Version 28 and Version 29 of wireless/wifi


Ignore:
Timestamp:
05/17/2018 10:49:17 PM (7 years ago)
Author:
Cale Collins
Comment:

added common IBSS error.

Legend:

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  • wireless/wifi

    v28 v29  
    10201020}}}
    10211021
     1022Creating an interface that already exists will cause an error:
     1023
     1024{{{
     1025root@OpenWrt:/# ls /sys/class/net/
     1026bond0            can0             gretap0          lo
     1027bonding_masters  eth0             ifb0             usb0
     1028br-lan           gre0             ifb1             wlan0
     1029root@OpenWrt:/# iw phy phy0 interface add wlan0 type ibss
     1030command failed: Too many open files in system (-23)
     1031root@OpenWrt:/#
     1032}}}
     1033
     1034 
     1035
    10221036=== Frame Aggregation ===
    10231037As data rates increase the overhead of management and headers starts to create bandwidth bottlenecks. The 802.11n specification introduced the concept of '''Frame Aggregation''' to combat this. Two types of aggregation was introduced: A-MPDU and A-MSDU.