.TH ESI 8 "April 26, 2000" "Linux" "Maintenance Commands"
.SH NAME
esi \- get or set the end system identifier (ESI)
.SH SYNOPSIS
.ad l
.B esi 
.RB [ \fIitf\fP ]
.br
.B esi
.RB [ \-f ]\ \fIesi\fP\ [ \fIitf\fP ]
.br
.B esi
.B \-V
.ad b
.SH DESCRIPTION
.B esi
is used to show or set the end system identifier (ESI, a unique six-byte
number corresponding to the MAC address of LAN technologies like Ethernet)
of an ATM interface. If the interface number \fIitf\fP is omitted, interface
0 is used by default. The \fIesi\fP argument is a string of twelve hex digits.
.P
Only the ESI stored in the kernel is accessed; \fBesi\fP does not change the
ESI stored on the NIC. If a non-zero ESI is already set on an interface, the
\fB\-f\fP option has to be used to overwrite it.
.P
Note that ESI changes are not automatically propagated throughout the system,
e.g. to \fBilmid\fP. \fBesi\fP should therefore be used early during system
initialization.
.SH OPTIONS
.IP \fB\-f\fP
force overwriting an existing ESI.
.IP \fB\-V\fP
print version number of \fBesi\fP on standard output and exit.
.SH AUTHOR
Werner Almesberger, EPFL ICA <Werner.Almesberger@epfl.ch>
.SH "SEE ALSO"
ilmid(8)
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