les, bus - ATM LAN Emulation service demons

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

       Undocumented.

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

       Lecs implements the distribution of LECs to different emulated LANs. This is done by giving different LAN
       Emulation Server ATM addresses to LECs. Distribution  is  based  on  lecs's  configuration  database  and
       information provided by the LE client. It is not required that a lecs exists for all emulated LANs. It is
       possible to bypass this configuration phase by directly telling ATM address of the les(8) to the LEC.

       Configuration file example for lecs:
         # Our ATM address (should be included to differentiate us from
         # e.g. LEC)
         # Must be before ELAN definitions
         470023000000030300010002010020ea000ae905

         # ELAN name is inside brackets.
         # Parameters below are for Ethernet type LE (Linux & almost all
         # other LE clients)
         [tut-lane1]
         # Address of the LES
         LES:=470023000000030300010002010020ea000ae901
         # 802_3 or 802_5 (802_3 = Ethernet)
         Type:=802_3
         # 1515, 4544, 9234 or 18190 (1516= Ethernet)
         Max_Frame:=1516

         # ATM address for hosts that are guided to this ELAN.
         # Wildcard is x or X.
         470023000000030300010002010020ea0005aax0
         470023000000030000010002010020ea0005bx00
         47.002300000003030001000201.00603E2FDX23.00
         470023000000030300010002010020ea000Xxx00
         DEFAULT
         # Another ELAN, which has empty name
         [asdf]
         # This directive sets this elan as the default i.e. it will be
         # included if LEC's configure request could not be matched to
         # other ELANs
         #DEFAULT
         LES= 470023000000030300010002010020ea000ae902
         Type=Ethernet

       Rules   for  finding  ELAN  definitions  using  information  provided  in  LE_CONFIGURE_REQUEST  and  the
       configuration file are as follows:

         1. Find an entry where ELAN-NAME matches exactly and an
            ATM address of the LEC is found in ELAN definition.
            These are to match exactly with the information given in
            LE_CONFIGURE_REQUEST. If ELAN-NAME is found, but ATM
            address doesn't match then reject with reason "Permission
            denied".
         2. Search for first ELAN which matches in type of emulated LAN,
            maximum frame size and ATM address of the LEC.
         3. If matching ELAN was not found, return default ELAN
            definitions.
         4. No match, so request is rejected with reason "No
            Configuration".

         SIGHUP restarts the server.

.lecs_conf               configuration file

       les, bus - ATM LAN Emulation service demons

-d     Reads the configuration file, dumps its contents and exits.

       -llisten_address
              Use the listen_address to where wait connections.

       -fconfiguration_file
              Use the specified configuration file instead of .lecs_conf.

les(8), atmsigd(8), zeppelin(8)

Linux                                             Sep 11, 1996                                            LES(8)

lecs [-llisten_address] [-fconfiguration_file] [-d]