Error Handling with Powershell

[Dumber]

#143242

Ok,
First time I use powershell…
I’ve to create about 1200 DHCP scopes on 2 servers.

So far so good, I created a pretty simple script which reads from a csv file and dumps it into DHCP using the netsh command..

Code:

import-csv c:DHCP.csv | foreach-object {

$scopename = $_.DHCP_Names
$scope = $_.Networkrange
$mask = $_.Mask
$gateway = $_.Gateway
$lowResStart = $_.Res1_start
$lowResEnd = $_.Res1_stop
$DHCP1_start = $_.DHCP1_start
$DHCP1_stop = $_.DHCP1_stop
$DHCP2_start = $_.DHCP2_start
$DHCP2_stop = $_.DHCP2_stop
$highResStart = $_.Network_start
$highResStop = $_.network_stop
$leasetime = $_.Leasetime
$hname = $env:computername
$currentServer = “”

# find out hostname where script is running.
# this is to decide what scope should be excluded.

$hname = $env:computername
$currentserver = “”
if ($hname -eq “WINDOWS2008DHCP”) {$currentserver = “DHCP1”}
If ($hname -eq “SERVER1”) {$currentserver = “DHCP2”}

# Add DHCP scope on the running server
netsh dhcp server add scope $scope $mask $scopename # servername needs to be added…. still to come..

# add the IP range

if ($lowResStart -ne “” -and $highResStop -ne “”){
netsh dhcp server scope $scope add iprange $lowResStart $highResStop # ff verder nakijken hoe dit te verwerken in Excel.
}
else
{
if ($currentserver -eq “DHCP1”){
netsh dhcp server scope $scope add iprange $DHCP1_start $DHCP1_stop
}
if ($currentserver -eq “DHCP2”){
netsh dhcp server scope $scope add iprange $DHCP2_start $DHCP2_stop
}
}

# 3. Connect to (DHCP-01 MyScope), and add IP exclusion range

if ($LowResStart -ne “” -AND $LowResEnd -ne “” ) {

netsh dhcp server scope $scope add excluderange $LowResStart $lowResEnd
}
if ($highResStart -ne “” -AND $highResStop -ne “” ) {
netsh dhcp server scope $scope add excluderange $highResStart $highResStop
}

# When current server equals to the first DHCP server (where the scrupt is executed) then set the exclusions for DHCP2
if ($currentserver -eq “DHCP1”){
if ($DHCP2_start -ne “” -OR $DHCP2_stop -ne “”){
netsh dhcp server scope $scope add excluderange $DHCP2_start $DHCP2_stop
}
}

# When current server quals to the second DHCP server (where the scrupt is executed) then set the exclusions for DHCP1
if ($currentserver -eq “DHCP2”){
if ($DHCP1_start -ne “” -OR $DHCP1_stop -ne “”){
netsh dhcp server scope $scope add excluderange DHCP1_start $DHCP1_stop
}
}

# 4 Add default Gateway for that scope
netsh dhcp server scope $scope set optionvalue 003 IPADDRESS $gateway

# 5 Add lease time…
netsh dhcp server scope $scope set optionvalue 51 DWORD $leasetime

}
[/CODE]

However is there a way to check if each command succesfully?
Sure I can simply run script > textfile.txt or something but I’m more looking for an elegant way.

so what I actually wanting to do is something like:

[CODE]
$compare = netsh dhcp server scope $scope set optionvalue 51 DWORD $leasetime
If ($compare.EndsWith(“successfully.”)) {
write-host “Successfull….”
}
else {
write-host “NOT Successfull…. starting some log function”
}

[/CODE]

For some reason sometimes it works and sometimes it doesnt.. It especially works when it gives me the else statement… :S

If it’s true then it actually give me this error message.
[COLOR=”Red”]Method invocation failed because [System.Object[]] doesn’t contain a method named ‘EndsWith’.[/COLOR]

Edit:

this test script simply works, so it has something to do with the results i guess…

[code]
$compare = “Changed the current scope context to 192.168.21.0 scope. Command completed successfully.”

#write-host $compare

If ($compare.EndsWith(“successfully.”)) {
write-host “boe”
}
else
{
write-host “boeboe”
}

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