kstat can return a lot of useful information about the state of your ethernet interfaces. However, the syntax can be confusing and difficult to remember. This script functions as a wrapper around kstat – tell it the interface type and instance number, and it will return configuration details. It’s important to note that older cards, like hme, wi…

kstat_check.ksh

#!/bin/ksh

# See http://www.gaeltd.com/scripts-and-tools/ for more details

# 2004-01-20 Tom Kranz (tom@siliconbunny.com)

# This script is distributed under the GNU Public License (GPL) with the
# following extra conditions:
# - attritbution must be maintained
# - CD-ROM or similar media for commercial distribution without the prior 
#   approval of the author

# This script is a nice wrapper for kstat, giving us some nice output about
# settings for a specified nic and instance

# Make sure we got our command line args
if [[ ${1} == "" ]] || [[ ${2} == "" ]]
then
	echo ""
	echo "Usage:"
	echo "kstat_check.ksh <interface> <instance number>"
	echo ""
	echo "eg. kstat_check.ksh ce 0"
	echo ""
	exit 1
fi

# Path to kstat
KSTAT=/usr/bin/kstat

echo ""

# What is possible with this nic instance?
echo "Port capabilities for ${1} instance ${2}"
${KSTAT} -p ${1}:${2}::"/^cap_/"
echo ""

# What is actually set for this nic instance?
echo "Current settings in effect for ${1} instance ${2}"
${KSTAT} -p ${1}:${2}::"/^link_/"
echo ""

# What can our link partner do?
echo "Link partner capabilities for ${1} instance ${2}"
${KSTAT} -p ${1}:${2}::"/^lp_cap_/"
echo ""

exit 0