1br2684ctl(1)                General Commands Manual               br2684ctl(1)
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NAME

6       br2684ctl - RFC1483/2684 Bridge Daemon
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SYNOPSIS

9       br2684ctl  [ -b ] [[ -c n ] [ -e 0|1 ] [ -s sndbuf ] [ -a [itf].vpi.vci
10       ]] ...
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PARAMETERS

13       -a [itf].vpi.vci
14                      ATM PVC number, VPI and VCI.   (Required)  -b  Puts  the
15                      process in the background.
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17       -c n           br2684 interface number such as 0, 1, ... (Required)
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19       -e 0|1         Encapsulation method:  0=LLC, 1=VC mux (the default is 0
20                      or LLC)
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23       -s sndbuf      Send buffer size. Default is 8192.
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DESCRIPTION

26       br2684ctl handles RFC1483/2684 bridged PDUs.  This is most often
27       used  in  ADSL scenarios where usually the subscribers' ethernet
28       traffic is encapsulated in ATM AAL5 (by  bridging  ADSL  modems)
29       according  to  RFC2684.   The  subscriber-side ADSL modem can be
30       external with an ethernet connector or an internal ADSL card  in
31       a PC.  RFC1483 has been obsoleted by RFC2684.
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33       For  example  it  is possible to set up your Linux box to handle
34       several ATM PVC's with bridged-1483 (sometimes referred as SNAP)
35       encapsulation.   The  Linux network stack might provide DHCP, IP
36       masquerading, IP firewall services or bridge the Ethernet frames
37       just  like  it  had several ethernet interfaces.  In fact it can
38       have several (logical) ethernet interfaces, where  ATM  is  just
39       used as a carrier.
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USAGE

42       br2684ctl  creates a new network interface named nas[n] which is
43       bound to an specific ATM PVC. It requires  two  mandatory  argu‐
44       ments:  -c, the interface number, and -a, the ATM PVC. It should
45       be noted that the order of  the  command  arguments  matter;  -c
46       should  be  followed by -a. You can create as many interfaces as
47       necessary in one go, just make a long command line ;)
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49       For example, following command  will  create  a  nas0  interface
50       which  uses the ATM PVC with VPI=0 and VCI=401. You need to con‐
51       figure the PVC connection 0.401 on the ATM switch manually.
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53       % br2684ctl -c 0 -a 0.401
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55       The command will only create a new interface nas0.  Next step is
56       to  assign an IP address and netmask to the interface nas0 using
57       the ifconfig command. Using ifconfig, you can also assign a Eth‐
58       ernet MAC address to the interface nas0, if necessary.
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60       % ifconfig nas0 192.168.2.1 netmask 255.255.255.0
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NOTES

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

67       qos(7)
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71                                  7 Jul 2003                      br2684ctl(1)