NAME

       zeppelin - ATM LAN Emulation client demon (LED) Zeppelin

SYNOPSIS

       zeppelin     [-b ]     [-c LECS_address | -s LES_address]    [-e esi]    [-n VLAN_name]    [-m mesg_mask]
       [-l listen_address | selector]            [-i interface_number]            [-I physical_interface_number]
       [-t 1516|1580|4544|9234|18190] [-1 ] [-2 ] [-p ] [-F logfile] [-f Fore_specific_name]

DESCRIPTION

       A  LAN  Emulation  Client  is  an  entity  in  an  ATM  endstation that performs data forwarding, address
       resolution and other control functions.  It  uses  the  LUNI  interface  when  communicating  with  other
       components  in  emulated  LANs.  It  provides  upper protocol layers a MAC like interface similar to IEEE
       802.3/Ethernet or IEEE 802.5/Token Ring LAN.

       LAN Emulation client code is divided into two parts: user space application LAN  Emulation  Demon  called
       (LED) zeppelin(8), and the kernel component. Zeppelin is responsible for control operations needed in LAN
       Emulation clienthood. It forms the necessary VCCs and  receives  all  the  LE  control  frames  and  acts
       accordingly. It also controls the operation of the LEC kernel component.

       Linux LEC supports only Ethernet type of emulated LAN.

       SIGHUP causes restart of the LEC. All resources are released and zeppelin is started.

OPTIONS

       -b     Run in background (i.e. in a forked child process) after initializing kernel interface.

       -c LECS_address
              ATM address of lecs(8) (Lan Emulation Configuration Server), if not set, Well-Known server address
              is used.

       -s LES_address
              ATM address of les(8) (Lan Emulation Server), can be used  in  bypassing  configuration  phase  in
              joining emulated Lan i.e lecs address is not used.

       -e esi Mac address to use when communicating in Emulated LAN. E.g. 00:20:22:23:04:05 .

       -n VLAN_name
              Name  of  the  virtual LAN to which joining is requested.  This is used in LE_CONFIGURE_REQUEST to
              LECS or LE_JOIN_RESPONSE to LES, if configuration phase is bypassed.

       -m mesg_mask
              Sometimes one wants to know more what is happening in LE daemon e.g. when nothing works. This is a
              hexadecimal long value setting global message mask. 0 = No messages, ffff = All messages.

       -l listen_address | selector
              Local  ATM  address  that  zeppelin uses as local binding point in signalling. Use this if you are
              running more than one client or a set of LE servers. The local ATM address  can  be  specified  by
              either giving the full ATM address or the desired selector byte.

       -i interface_number
              Linux  LEC supports up to 40+8 network interfaces. The interface_number tells zeppelin to which of
              these to attach. Ethernet type network interfaces are numbered from "lec0" to  "lec39"  and  Token
              Ring  interfaces  are  from  "lec40"  to "lec47". These parameters are tweakable during the kernel
              compile, see <linux/atmlec.h>.

       -I physical_interface_number
              The physical interface this LANE client should bind to. If your  host  has  multiple  ATM  network
              cards, you can use this option to choose which card this zeppelin will use.

       -t MTU The MTU of ELAN to join. You need to also use ifconfig(8) to set the MTU of the LANE interface.

       -1     Run as LANEv1 client. This is the default.

       -2     Run as LANEv2 client. This is required by MPOA.

       -p     Enable  proxy.  When  started  with  this option, it is possible to bridge packets between ATM and
              Ethernet. That is, you can use LANE interfaces with normal bridging. See the  Bridging  mini-Howto
              for more info.

       -F logfile
              Instead of writing debug messages to stderr, write the messages to the file logfile. Use syslog as
              the file name to use the syslog(3) facility.

       -f Fore specific name
              The LANE servers on Fore ATM switches can display a special name if a client can supply one.  This
              name shows with command ´conf lane les show advanced´.

TOKEN RING CONSIDERATIONS

       A  number  of lec interfaces is reserved for Token Ring ELANs when the kernel is compiled with Token Ring
       (CONFIG_TR) support. See the discussion about interface_number command line option above. The Linux Token
       Ring  LANE client does not support bridging between legacy Token Ring and ATM parts of the ELAN, so using
       the -p option is not recommended. Token  Ring  support  has  received  less  testing  than  its  Ethernet
       counterpart.

FILES

       /var/run/lec[interface number].pid
              The file containing the process id of zeppelin.

BUGS

       John Bonham died 1980 and Led Zeppelin broke.

       Please report any other bugs to Heikki Vatiainen <hessu@cs.tut.fi>

AUTHORS

       Marko Kiiskila, TUT <carnil@cs.tut.fi> and Heikki Vatiainen, TUT <hessu@cs.tut.fi>

SEE ALSO

       lecs(8), mpcd(8), atmsigd(8), les(8), qos(7)