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)