zeppelin - ATM LAN Emulation client demon (LED) Zeppelin
[-c LECS_address | -s
] [-e esi
] [-m mesg_mask
listen_address | selector]
] [-1 ]
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.
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
Linux LEC supports only Ethernet type of emulated LAN.
causes restart of the LEC. All resources are released and
- 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.
- -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
- -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.
- Run as LANEv1 client. This is the default.
- Run as LANEv2 client. This is required by MPOA.
- 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
- -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´.
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.
- /var/run/lec[interface number].pid
- The file containing the process id of zeppelin.
John Bonham died 1980 and Led Zeppelin broke.
Please report any other bugs to Heikki Vatiainen <firstname.lastname@example.org>
Marko Kiiskila, TUT <email@example.com> and Heikki Vatiainen, TUT
lecs(8), mpcd(8), atmsigd(8), les(8), qos(7)