bionic (8) les.8.gz

NAME

       les, bus - ATM LAN Emulation service demons

SYNOPSIS

       les [-d module] [-m module] [-f configuration_file]

       bus [-d module] [-m module] [-f configuration_file]

DESCRIPTION

       LE  Service  consists  of  three  components: LAN Emulation Configuration Server (lecs(8)), LAN Emulation
       Server (les) and Broadcast and Unknown Server (bus).

       Les performs the control coordination function for the emulated LAN.  LE clients register  MAC  addresses
       and/or  route  descriptors  they  represent  to  les,  and  later  query it when they want to resolve MAC
       addresses/route descriptors into ATM addresses. Other LE control messages which are to be distributed  to
       every client in ELAN are also sent to les. Les forwards these messages using Control Distribute VCC which
       it has set up to every client in ELAN.

       Bus handles data sent by clients to broadcast and multicast MAC addresses and some of the  data  directed
       to  unicast  addresses.  LE Client has a possibility to send data directed to some unicast address to the
       bus before target's ATM address has been resolved and the Data Direct VCC has been established.

       Configuration file example for les and bus:

         [main]
         memdebug=True
         debug=True
         [load]
         #memdebug=True
         #debug=True
         [conn]
         debug=True
         #S1, LE Server's ATM address
         #S1=:47:00:23:00:00:00:03:00:00:01:00:02:01:00:20:ea:00:05:aa:00
         S1=:47:00:23:00:00:00:03:03:00:01:00:02:01:00:20:ea:00:0a:e9:01
         #S2, LAN Type
         S2="802.3"
         #S3, Maximum Frame Size
         S3=1516
         #S4, Join Timeout, s
         S4=15
         #S5, Maximum Frame Age, s
         S5=6
         #S6, BUS Atm address
         S6=:47:00:23:00:00:00:03:03:00:01:00:02:01:00:20:ea:00:0a:e9:02 #viulu
         #S6=0,0,170
         #ELANNAME="asdf"

       The configuration file contains each modules name in brackets followed by variable definitions  for  that
       module.  The  definitions are of form variable=value, where value can be either an integer, a truth value
       (True/False), a string enclosed in double quotes ("string") or an  ATM  address  in  hexadecimal  format.
       Variables  that  can  be  set are the debug/memdebug for each module and variables S1-S6 as defined in LE
       specification.

       S1=Address of the LES. This address is used in ATM
          signalling.
       S2=Type of the emulated LAN. Valid values is "802.3".
       S3=Maximum frame size. Valid value is 1516.
       S4=Join Timeout. Time in seconds which LES waits for
          LE_JOIN_REQUEST before tearing down a connection.
       S5=Maximum frame Age. Currently not used.
       S6=Address of the BUS. This address is used in ATM signalling.
       ELANNAME= Name of the emulated LAN

       SIGHUP causes restart of the server. All resources are released and server is started. SIGUSR1 causes the
       server to dump its internal state. SIGUSR2 shuts down the server (hopefully) gracefully.

OPTIONS

       -d module
              Set debugging messages on for a module. "All" sets debugging on for all modules.

       -m module
              Set memory debugging messages on for a module. "All" sets debugging on for all modules.

       -f configuration_file
              Use the specified configuration file instead of .lanevars.

FILES

       .lanevars                configuration file

BUGS

       Servers  don't establish point-to-multipoint connections to LE clients as the specification states, which
       means that some LE clients won't work with these servers.

       Supports only IEEE 802.3 / Ethernet type of ELANs.

       This manual page is confusing.

AUTHOR

       Marko Kiiskila, TUT <carnil@cs.tut.fi>

SEE ALSO

       lecs(8), atmsigd(8), zeppelin(8)