Ubuntu Feisty 7.04 manual page repository

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NAME

      an - Aironet Communications 4500/4800 wireless network adapter driver
 

SYNOPSIS

      To compile support for the
      an driver into your kernel, place the following lines in your kernel con‐
         figuration file:
 
            device an
            device wlan
 
         Alternatively, to load the
loader.conf(5):
 
               if_an_load="YES"
 

DESCRIPTION

      The an driver provides support for Aironet Communications 4500 and 4800
      wireless network adapters and variants, including the following:
 
                  Aironet Communications 4500 and 4800 series
                  Cisco Aironet 340 and 350 series
                  Xircom Wireless Ethernet Adapter
 
      Support for these devices include the ISA, PCI and PCMCIA varieties.  The
      Aironet 4500 series adapters operate at 1 and 2Mbps while the Aironet
      4800 series and Cisco adapters can operate at 1, 2, 5.5 and 11Mbps.  The
      ISA, PCI and PCMCIA devices are all based on the same core PCMCIA modules
      and all have the same programming interface, however unlike the Lucent
      WaveLAN/IEEE cards, the ISA and PCI cards appear to the host as normal
      ISA and PCI devices and do not require any PCCARD support.
 
      The PCMCIA Aironet cards require PC Card support, including the kernel
pccard(4) driver.  ISA cards can either be configured to use ISA Plug and
      Play or to use a particular I/O address and IRQ by properly setting the
      DIP switches on the board.  (The default switch setting is for Plug and
      Play.)  The an driver has Plug and Play support and will work in either
      configuration, however when using a hard-wired I/O address and IRQ, the
      driver configuration and the NIC’s switch settings must agree.  PCI cards
      require no switch settings of any kind and will be automatically probed
      and attached.
 
      All host/device interaction with the Aironet cards is via programmed I/O.
      The Aironet devices support 802.11 and 802.3 frames, power management,
      BSS (infrastructure) and IBSS (ad-hoc) operation modes.  The an driver
      encapsulates all IP and ARP traffic as 802.11 frames, however it can
      receive either 802.11 or 802.3 frames.  Transmit speed is selectable
      between 1Mbps, 2Mbps, 5.5Mbps, 11Mbps or "auto" (the NIC automatically
      chooses the best speed).
 
      By default, the an driver configures the Aironet card for infrastructure
      operation.
 
ifconfig(8).
 

DIAGNOSTICS

      an%d: init failed  The Aironet card failed to become ready after an ini‐
      tialization command was issued.
 
      an%d: failed to allocate %d bytes on NIC  The driver was unable to allo‐
      cate memory for transmit frames in the NIC’s on-board RAM.
 
      an%d: device timeout  The Aironet card failed to generate an interrupt to
      acknowledge a transmit command.
ifconfig(8)
 

HISTORY

      The an device driver first appeared in FreeBSD 4.0.
 

AUTHORS

      The an driver was written by Bill Paul 〈wpaul@ee.columbia.edu〉.
 

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