ATM to Ethernet conversion

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LEARN ABOUT MINIX

lecs

LES(8)							       Maintenance Commands							    LES(8)

NAME

       les, bus - ATM LAN Emulation service demons

SYNOPSIS

       lecs [-l listen_address] [-f configuration_file] [-d ]

DESCRIPTION

       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.

OPTIONS

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

       -l listen_address
	      Use the listen_address to where wait connections.

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

FILES

       .lecs_conf		configuration file

BUGS

       Undocumented.

AUTHOR

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

SEE ALSO

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

Linux								   Sep 11, 1996 							    LES(8)

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