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       br2684ctl - RFC1483/2684 Bridge Daemon


       br2684ctl  [  -b  ]  [[  -c n  ]  [ -e 0|1 ] [ -p 0|1 ] [ -s sndbuf ] [
       -a [itf].vpi.vci ]] ...


       -a [itf].vpi.vci
                      ATM PVC number, VPI and VCI.  (Required)

       -b             Puts the process in the background.

       -c n           br2684 interface number such as 0, 1, ... (Required)

       -e 0|1         Encapsulation method:  0=LLC, 1=VC mux (the default is 0
                      or LLC)

       -p 0|1         Payload  method:   0=Routed, 1=Bridged (the default is 1
                      or Bridged)

       -s sndbuf      Send buffer size. Default is 8192.


       br2684ctl handles RFC1483/2684 bridged PDUs.  This is most  often  used
       in  ADSL  scenarios  where usually the subscribers’ ethernet traffic is
       encapsulated in  ATM  AAL5  (by  bridging  ADSL  modems)  according  to
       RFC2684.   The  subscriber-side  ADSL  modem  can  be  external with an
       ethernet connector or an internal ADSL card in a PC.  RFC1483 has  been
       obsoleted by RFC2684.

       For  example  it is possible to set up your Linux box to handle several
       ATM PVC’s with bridged-1483 (sometimes referred as SNAP) encapsulation.
       The  Linux  network  stack  might  provide  DHCP,  IP  masquerading, IP
       firewall services or bridge  the  Ethernet  frames  just  like  it  had
       several  ethernet  interfaces.   In  fact it can have several (logical)
       ethernet interfaces, where ATM is just used as a carrier.


       br2684ctl creates a new network interface named nas[n] which  is  bound
       to  an  specific ATM PVC. It requires two mandatory arguments:  -c, the
       interface number, and -a, the ATM PVC. It  should  be  noted  that  the
       order of the command arguments matter; -c should be followed by -a. You
       can create as many interfaces as necessary in one go, just make a  long
       command line ;)

       For  example, following command will create a nas0 interface which uses
       the ATM PVC with VPI=0 and VCI=401.  You  need  to  configure  the  PVC
       connection 0.401 on the ATM switch manually.

       % br2684ctl -c 0 -a 0.401

       The  command  will  only  create a new interface nas0.  Next step is to
       assign an IP address and  netmask  to  the  interface  nas0  using  the
       ifconfig  command.  Using  ifconfig, you can also assign a Ethernet MAC
       address to the interface nas0, if necessary.

       % ifconfig nas0 netmask

       Messages are logged to the LOCAL2 syslog facility.




       This  man  page  is  based  on  a   tutorial   by   by   Joonbum   Byun



                                  7 Jul 2003                      br2684ctl(8)