1LES(8) Maintenance Commands LES(8)
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6 les, bus - ATM LAN Emulation service demons
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9 lecs [-l listen_address] [-f configuration_file] [-d ]
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12 LE Service consists of three components: LAN Emulation Configuration
13 Server (lecs), LAN Emulation Server ( les(8)) and Broadcast and Unknown
14 Server (bus(8)).
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16 Lecs implements the distribution of LECs to different emulated LANs.
17 This is done by giving different LAN Emulation Server ATM addresses to
18 LECs. Distribution is based on lecs's configuration database and inforā
19 mation provided by the LE client. It is not required that a lecs exists
20 for all emulated LANs. It is possible to bypass this configuration
21 phase by directly telling ATM address of the les(8) to the LEC.
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23 Configuration file example for lecs:
24 # Our ATM address (should be included to differentiate us from
25 # e.g. LEC)
26 # Must be before ELAN definitions
27 470023000000030300010002010020ea000ae905
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29 # ELAN name is inside brackets.
30 # Parameters below are for Ethernet type LE (Linux & almost all
31 # other LE clients)
32 [tut-lane1]
33 # Address of the LES
34 LES:=470023000000030300010002010020ea000ae901
35 # 802_3 or 802_5 (802_3 = Ethernet)
36 Type:=802_3
37 # 1515, 4544, 9234 or 18190 (1516= Ethernet)
38 Max_Frame:=1516
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40 # ATM address for hosts that are guided to this ELAN.
41 # Wildcard is x or X.
42 470023000000030300010002010020ea0005aax0
43 470023000000030000010002010020ea0005bx00
44 47.002300000003030001000201.00603E2FDX23.00
45 470023000000030300010002010020ea000Xxx00
46 DEFAULT
47 # Another ELAN, which has empty name
48 [asdf]
49 # This directive sets this elan as the default i.e. it will be
50 # included if LEC's configure request could not be matched to
51 # other ELANs
52 #DEFAULT
53 LES= 470023000000030300010002010020ea000ae902
54 Type=Ethernet
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56 Rules for finding ELAN definitions using information provided in
57 LE_CONFIGURE_REQUEST and the configuration file are as follows:
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59 1. Find an entry where ELAN-NAME matches exactly and an
60 ATM address of the LEC is found in ELAN definition.
61 These are to match exactly with the information given in
62 LE_CONFIGURE_REQUEST. If ELAN-NAME is found, but ATM
63 address doesn't match then reject with reason "Permission
64 denied".
65 2. Search for first ELAN which matches in type of emulated LAN,
66 maximum frame size and ATM address of the LEC.
67 3. If matching ELAN was not found, return default ELAN
68 definitions.
69 4. No match, so request is rejected with reason "No
70 Configuration".
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72 SIGHUP restarts the server.
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75 -d Reads the configuration file, dumps its contents and
76 exits.
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78 -l listen_address
79 Use the listen_address to where wait connections.
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81 -f configuration_file
82 Use the specified configuration file instead of
83 .lecs_conf.
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86 .lecs_conf configuration file
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89 Undocumented.
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92 Marko Kiiskila, TUT <carnil@cs.tut.fi>
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95 les(8), atmsigd(8), zeppelin(8)
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99Linux Sep 11, 1996 LES(8)