Configuring ADSL/3G/4G connectivity with Failover and Fallback capability

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br2684ctl

br2684ctl(8)						      System Manager's Manual						      br2684ctl(8)

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) encapsula-
       tion.  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 ifcon-
       fig 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)

IP Networking