3-16Configuring an Emulated LAN3.4.2 Sample LECS Configuration FileCAUTION Do not attempt to edit an existing functionalLECS configuration file without first making abackup copy of the file. Incorrect modificationof the configuration file could result in loss ofcommunication between one or more mem-bers of a defined ELAN. It may also result inone or more of the ELAN(s) defined in the filegoing “down”.NOTE: For a detailed discussion of how to configurean LECS configuration file similar to the onegiven in this section, please refer to Section3.4.1.The sample LECS configuration file shown at the end of this section in Figures3.3 and 3.4 defines three ELANs:• default• engineering• marketingThe Match.Ordering statement specifies the ELAN names in the order thatprospective clients will attempt to join. Note that redundant marketingELANs have been included. This allows clients attempting to join the mar-keting ELAN to “failover” to one of the redundant LES instances if the pri-mary LES fails.The default configuration parameters are shown with their default values.These values apply to all ELANs in this configuration file, unless overriddenfor a particular ELAN or client.ELAN default is configured to accept any client that wishes to join. Theadministrator must substitute the ATM address of the default LES in place ofthe “4”s in the default.Address statement.ELAN engineering has overridden the default Maximum_Frame_Size witha new size of 4544 bytes. Consequently, this frame size applies only to trafficon the engineering ELAN. The default and marketing ELANs continue touse the default frame size of 1516 bytes.
