NAME

       br2684ctl - RFC1483/2684 Bridge Daemon

SYNOPSIS

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

PARAMETERS

       -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.

DESCRIPTION

       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.

USAGE

       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 192.168.2.1 netmask 255.255.255.0

       Messages are logged to the LOCAL2 syslog facility.

FILES

       /var/run/br2684ctl-<iface>.pid

NOTES

       This man page is based on a tutorial by by Joonbum Byun <jbyun@megaxess.com>

SEE ALSO

       qos(7)

                                                   7 Jul 2003                                       br2684ctl(8)