br2684ctl(1)br2684ctl(1)NAMEbr2684ctl - RFC1483/2684 Bridge Daemon
SYNOPSISbr2684ctl [ -b ] [[ -c n ] [ -e 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)
-s sndbuf Send buffer size. Default is 8192.
DESCRIPTIONbr2684ctl 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.
USAGEbr2684ctl creates a new network interface named nas[n] which is
bound to an specific ATM PVC. It requires two mandatory argu‐
ments: -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 con‐
figure 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 Eth‐
ernet MAC address to the interface nas0, if necessary.
% ifconfig nas0 192.168.2.1 netmask 255.255.255.0
NOTES
This man page is based on a tutorial by by Joonbum Byun
<jbyun@megaxess.com>
SEE ALSOqos(7)
7 Jul 2003 br2684ctl(1)
