Andrew Alston

Some ip aliasing / vlan stuff

Script for starting/stopping vlan interfaces:

root@solaris /etc/rc3.d # more S19interface-vlan 
#!/sbin/sh
#
# Copyright 2006 Andrew Alston / TENET  All rights reserved.
#

[ ! -d /usr/bin ] && exit

# Start/stop processes required for  starting and stopping vlans

case "$1" in
'start')

        # If /etc/interface-vlan exists, use it to add virtual interfaces [this is syntax specific]

        if [ -f /etc/interface-vlan ]; then
                for i in `/usr/bin/cat /etc/interface-vlan |/usr/bin/grep -v '^#'`; do 
                     VLAN_INT=`/usr/bin/echo $i |awk -F: '{print $1SUM(($3*1000)+$2)}'`
                     ADDRESS=`/usr/bin/echo $i |awk -F: '{print $4}'`;
                     /sbin/ifconfig $VLAN_INT plumb $ADDRESS;
                done
        fi
        ;;

'stop')
        if [ -f /etc/interface-vlan ]; then
                for i in `/usr/bin/cat /etc/interface-vlan |/usr/bin/grep -v '^#'`; do 
                     VLAN_INT=`/usr/bin/echo $i |awk -F: '{print $1SUM(($3*1000)+$2)}'`
                     /sbin/ifconfig $VLAN_INT unplumb;
                done
        fi
        ;;
*)
        echo "Usage: $0 { start | stop }"
        exit 1
        ;;
esac
exit 0

Example config file for vlans:

root@solaris /etc/rc3.d # more ../interface-vlan 
# Syntax of this file is interface:instance:vlan-id
e1000g:0:10:10.200.10.1/24
e1000g:0:20:10.200.20.1/24
e1000g:0:30:10.200.30.1/24
e1000g:0:40:10.200.40.1/24


Script for starting/stopping ip aliasing 

root@solaris /etc/rc3.d # more S20ip-alias 
#!/sbin/sh
#
# Copyright 2006 Andrew Alston / TENET  All rights reserved.
#

[ ! -d /usr/bin ] && exit

# Start/stop processes required for ip aliasing 

case "$1" in
'start')

        # If /etc/ip-aliases exists, use it to add virtual interfaces [this is syntax specific]

        if [ -f /etc/ip-aliases ]; then
                for i in `/usr/bin/cat /etc/ip-aliases |/usr/bin/grep -v '^#'`; do 
                   VLANID=`/usr/bin/echo $i |awk -F: '{print $1}'`;
                   if [ $VLANID != 0 ]; then
                       INTERFACE=`/usr/bin/echo $i |/usr/bin/awk -F: '{print $3SUM(($1*1000)+$2)}'`
                   else 
                       INTERFACE=`/usr/bin/echo $i |/usr/bin/awk -F: '{print $3$2}'`;
                   fi
                   ADDRESS=`/usr/bin/echo $i |/usr/bin/awk -F: '{print $4}'`;
                   /sbin/ifconfig $INTERFACE addif $ADDRESS;
                done
        fi
        ;;

'stop')
        if [ -f /etc/ip-aliases ]; then
                for i in `/usr/bin/cat /etc/ip-aliases |/usr/bin/grep -v '^#'`; do 
                   VLANID=`/usr/bin/echo $i |awk -F: '{print $1}'`;
                   if [ $VLANID != 0 ]; then
                       INTERFACE=`/usr/bin/echo $i |/usr/bin/awk -F: '{print $3SUM(($1*1000)+$2)}'`
                   else 
                       INTERFACE=`/usr/bin/echo $i |/usr/bin/awk -F: '{print $3$2}'`;
                   fi
                   ADDRESS=`/usr/bin/echo $i |/usr/bin/awk -F: '{print $4}' |sed 's/\/.*//g'`;
                   /sbin/ifconfig $INTERFACE removeif $ADDRESS;
                done
        fi
        ;;
*)
        echo "Usage: $0 { start | stop }"
        exit 1
        ;;
esac
exit 0

Example Configuration:

root@solaris /etc/rc3.d # more /etc/ip-aliases 
# Format of this file is vlan:interface-instance:interface:address
# vlan setting of 0 denotes no vlan config for that entry
0:0:e1000g:10.200.0.7/32
0:0:e1000g:10.200.0.75/32
0:0:e1000g:10.200.0.76/32
0:0:e1000g:10.200.0.77/32
0:0:e1000g:10.200.0.78
0:0:e1000g:10.200.0.79
0:0:e1000g:10.200.0.80
10:0:e1000g:10.200.10.81
20:0:e1000g:10.200.20.82
30:0:e1000g:10.200.30.83
40:0:e1000g:10.200.40.84