LES(8)							       Maintenance Commands							    LES(8)

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  rep-
       resent  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 speci-
       fication.

       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)

Linux								   Sep 11, 1996 							    LES(8)