NAME

ex − Excelan 10 Mb/s Ethernet controller

SYNOPSIS

EX0 at address 0x7f0000/037600000 vector 0x50/0120 (VME Bus)
EX0 at address 0x3fe820/017764040 vector 0x50/0120 (LSI-11 Bus)

DESCRIPTION

The ex interface provides access to a 10 Mb/s Ethernet network through an Excelan controller. 

The host’s Excelan address is specified at boot time with an SIOCSIFADDR ioctl.  The ex interface employs the address resolution protocol described in arp(4P) to dynamically map between Internet and Ethernet addresses on the local network.

The interface normally tries to use a “trailer” encapsulation to minimize copying data on input and output.  This may be disabled, on a per-interface basis, by setting the IFF_NOTRAILERS flag with an SIOCSIFFLAGS ioctl. 

DIAGNOSTICS

ex%d: 100 transmit errors.  Indicates that 100 transmit errors have been recorded (and presumably corrected) since the last time this error message appeared. 

ex%d: 100 receive errors.  Indicates that 100 receive errors have been recorded (and presumably corrected) since the last time this error message appeared. 

SEE ALSO

intro(4N), arp(4P)

4th Berkeley Distribution  —  1 August 1985