I like making things easy. 😉  Here’s a simpler one: Simple Version.
Here’s a method to replace certain strings of text in a text file in order to generate a usable baseline configuration. Great for Cisco, Juniper, Brocade, Aruba, etc.
Start with a simple baseline configuration:
(This is not really a usable config, just an example!!! Don’t try to use it!)
hostname ###HOSTNAME### interface Vlan###MANAGEMENT-VLAN-NUMBER### description MANAGEMENT VLAN ip address ###MANAGEMENT-VLAN-IP### ###MANAGEMENT-VLAN-MASK### no shutdown logging source-interface Vlan###MANAGEMENT-VLAN-NUMBER### ip tacacs source-interface Vlan###MANAGEMENT-VLAN-NUMBER### snmp-server source-interface informs Vlan###MANAGEMENT-VLAN-NUMBER### snmp-server trap-source Vlan###MANAGEMENT-VLAN-NUMBER### ip radius source-interface Vlan###MANAGEMENT-VLAN-NUMBER### vlan ###MANAGEMENT-VLAN-NUMBER### name Management_VLAN ! vlan ###ACCESS-VLAN-NUMBER### name User_VLAN ! vlan ###VOICE-VLAN-NUMBER### name Voice_VLAN ! !###VLAN-PLACEHOLDER-1### ! !###VLAN-PLACEHOLDER-2### ! !###VLAN-PLACEHOLDER-3### ! !###VLAN-PLACEHOLDER-4### ! !###VLAN-PLACEHOLDER-5### ! interface Vlan1 description CONFIG GENERATED ###DATE### by ###USER### shutdown ip default-gateway ###DEFAULT-GATEWAY### interface range ###PORTS-1### !###PORTS-2### !###PORTS-3### !###PORTS-4### !###PORTS-5### !###PORTS-6### !###PORTS-7### switchport access vlan ###ACCESS-VLAN-NUMBER### switchport voice vlan ###VOICE-VLAN-NUMBER### switchport switchport host no shutdown default interface range ###TRUNK-PORT### !###TRUNK-PORT2### interface range ###TRUNK-PORT### !###TRUNK-PORT2### !###ETHERCHANNEL-CONFIG### !description !--- Automatically populated by EEM with CDP switchport trunk allowed vlan ###ALLOWED-VLANS### switchport mode trunk no shutdown snmp-server location ###SNMP-LOCATION### snmp-server contact ###SNMP-CONTACT### copy running-config startup-config copy running-config flash:/initial-config.backup
Now use PowerShell to replace the “variables” you created:
# ==============================================================================================
#
#
# NAME: Config-GeneratorV2.ps1
#
# AUTHOR: Mr. Bray Comm Squad
#
# DATE : 27 Apr 2016
#
# COMMENT: V2 of this script replaces text in a master baseline config txt. Much simpler and
# easier to make config changes.
#
#
#
#
# ==============================================================================================
# LOCATION OF SCRIPT/BASELINE
$configGenDirectory = "$env:USERPROFILE\Desktop\config_generator"
#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Clear-Host
write-host ""
write-host ""
write-host " Enter values to generate your config." -ForegroundColor Yellow
write-host " [Defaults are in brackets]" -ForegroundColor Cyan
write-host ""
write-host ""
#--- Generate Current Date Variable
$date = Get-Date
$date = $date.ToString('MM-dd-yyyy_hh-mm-ss')
#--- Get User Generating Config
$generatingUser = [Environment]::UserName
#-----------------------------------------------------------------------------------------
#--- GET HOSTNAME AND CREATE NEW CONFIG FILE
write-host ""
write-host " Hostname " -ForegroundColor Green
write-host ""
$hostname = Read-Host -Prompt ' Enter Device Hostname [Bldg0000-Flr0-Rm000_MODEL] '
if($hostname -eq $null){ $hostname = "Bldg0000-Flr0-Rm000_MODEL" }
if($hostname -eq ""){ $hostname = "Bldg0000-Flr0-Rm000_MODEL" }
#--- CREATE NEW CONFIG DIRECTORY AND FILE ON DESKTOP
New-Item -Force -ItemType directory -Path "$($env:USERPROFILE)\Desktop\Generated-Configs\" | Out-Null
#--- SET OUTPUT PATH
$configOutPath = "$($env:USERPROFILE)\Desktop\Generated-Configs\3850-NIPR-Config-$hostname-$date.txt"
#--- CREATE NEW CONFIG FILE
Copy-Item $configGenDirectory/3850-NIPR-Baseline.txt $configOutPath -Force
(Get-Content $configOutPath).replace('###HOSTNAME###', "$hostname") | Set-Content $configOutPath -Force
#-----------------------------------------------------------------------------------------
#--- MANAGMENT VLAN
write-host ""
write-host " Management VLAN " -ForegroundColor Green
write-host ""
#INSTEAD OF ALLOWING USER TO SPECIFY MANAGEMENT VLAN, HARD SET IT
$mgmtVlan = "10"
#$mgmtVlan = Read-Host -Prompt ' Enter Management VLAN # [10] '
#if($mgmtVlan -eq $null){ $mgmtVlan = "10" }
#if($mgmtVlan -eq ""){ $mgmtVlan = "10" }
$mgmtVlanIP = Read-Host -Prompt ' Enter Management VLAN IP [10.0.0.2] '
if($mgmtVlanIP -eq $null){ $mgmtVlanIP = "10.0.0.2" }
if($mgmtVlanIP -eq ""){ $mgmtVlanIP = "10.0.0.2" }
$mgmtVlanMASK = Read-Host -Prompt ' Enter Management VLAN MASK [255.255.254.0] '
if($mgmtVlanMASK -eq $null){ $mgmtVlanMASK = "255.255.254.0" }
if($mgmtVlanMASK -eq ""){ $mgmtVlanMASK = "255.255.254.0" }
(Get-Content $configOutPath).replace('###MANAGEMENT-VLAN-NUMBER###', "$mgmtVlan") | Set-Content $configOutPath -Force
(Get-Content $configOutPath).replace('###MANAGEMENT-VLAN-IP###', "$mgmtVlanIP") | Set-Content $configOutPath -Force
(Get-Content $configOutPath).replace('###MANAGEMENT-VLAN-MASK###', "$mgmtVlanMASK") | Set-Content $configOutPath -Force
#-----------------------------------------------------------------------------------------
#--- VLAN 1 DESCRIPTION WITH DATE AND USER - NO PROMPT
(Get-Content $configOutPath).replace('###DATE###', "$date") | Set-Content $configOutPath -Force
(Get-Content $configOutPath).replace('###USER###', "$generatingUser") | Set-Content $configOutPath -Force
#-----------------------------------------------------------------------------------------
#--- DEFAULT GATEWAY - GENERATED - WITH PROMPT
write-host ""
write-host " Default Gateway " -ForegroundColor Green
write-host ""
$defaultGateway = Read-Host -Prompt ' Enter the Default Gateway IP [10.0.0.1] '
if($defaultGateway -eq $null){ $defaultGateway = "10.0.0.1" }
if($defaultGateway -eq ""){ $defaultGateway = "10.0.0.1" }
(Get-Content $configOutPath).replace('###DEFAULT-GATEWAY###', "$defaultGateway") | Set-Content $configOutPath -Force
#-----------------------------------------------------------------------------------------
#--- VLAN CONFIGURATION
write-host ""
write-host " VLAN Configuration " -ForegroundColor Green
write-host ""
$accessPortVlan = Read-Host -Prompt ' Enter the Data VLAN # '
if($accessPortVlan -eq $null){ $accessPortVlan = "666" }
if($accessPortVlan -eq ""){ $accessPortVlan = "666" }
$accessPortVoiceVlan = Read-Host -Prompt ' Enter the Voice VLAN # '
if($accessPortVoiceVlan -eq $null){ $accessPortVoiceVlan = "666" }
if($accessPortVoiceVlan -eq ""){ $accessPortVoiceVlan = "666" }
(Get-Content $configOutPath).replace('###ACCESS-VLAN-NUMBER###', "$accessPortVlan") | Set-Content $configOutPath -Force
(Get-Content $configOutPath).replace('###VOICE-VLAN-NUMBER###', "$accessPortVoiceVlan") | Set-Content $configOutPath -Force
#--- ADDITIONAL VLANS
write-host ""
write-host " Additional VLANs " -ForegroundColor Yellow
write-host ""
#--- ADDITIONAL VLAN 1
$additionalvlan = Read-Host -Prompt ' Configure another VLAN? (y/n) [n] '
if($additionalvlan -eq $null){ $additionalvlan = "n" }
if($additionalvlan -eq ""){ $additionalvlan = "n" }
if ($additionalvlan -eq "y") {
$vlanNumber = Read-Host -Prompt ' VLAN Number '
if($vlanNumber -eq $null){ $vlanNumber = "!" }
if($vlanNumber -eq ""){ $vlanNumber = "!" }
$vlanDescription = Read-Host -Prompt ' VLAN Description (no spaces) '
if($vlanDescription -eq $null){ $vlanDescription = "!" }
if($vlanDescription -eq ""){ $vlanDescription = "!" }
$additionalvlantext = @"
vlan $vlanNumber
name $vlanDescription
"@
(Get-Content $configOutPath).replace('!###VLAN-PLACEHOLDER-1###', "$additionalvlantext") | Set-Content $configOutPath -Force
}
#--- ADDITIONAL VLAN 2
if ($additionalvlan -eq "y") {
write-host ""
$additionalvlan = Read-Host -Prompt ' Configure another VLAN? (y/n) [n] '
if($additionalvlan -eq $null){ $additionalvlan = "n" }
if($additionalvlan -eq ""){ $additionalvlan = "n" }
if ($additionalvlan -eq "y") {
$vlanNumber = Read-Host -Prompt ' VLAN Number '
if($vlanNumber -eq $null){ $vlanNumber = "!" }
if($vlanNumber -eq ""){ $vlanNumber = "!" }
$vlanDescription = Read-Host -Prompt ' VLAN Description (no spaces) '
if($vlanDescription -eq $null){ $vlanDescription = "!" }
if($vlanDescription -eq ""){ $vlanDescription = "!" }
$additionalvlantext = @"
vlan $vlanNumber
name $vlanDescription
"@
(Get-Content $configOutPath).replace('!###VLAN-PLACEHOLDER-2###', "$additionalvlantext") | Set-Content $configOutPath -Force
}
}
#--- ADDITIONAL VLAN 3
if ($additionalvlan -eq "y") {
write-host ""
$additionalvlan = Read-Host -Prompt ' Configure another VLAN? (y/n) [n] '
if($additionalvlan -eq $null){ $additionalvlan = "n" }
if($additionalvlan -eq ""){ $additionalvlan = "n" }
if ($additionalvlan -eq "y") {
$vlanNumber = Read-Host -Prompt ' VLAN Number '
if($vlanNumber -eq $null){ $vlanNumber = "!" }
if($vlanNumber -eq ""){ $vlanNumber = "!" }
$vlanDescription = Read-Host -Prompt ' VLAN Description (no spaces) '
if($vlanDescription -eq $null){ $vlanDescription = "!" }
if($vlanDescription -eq ""){ $vlanDescription = "!" }
$additionalvlantext = @"
vlan $vlanNumber
name $vlanDescription
"@
(Get-Content $configOutPath).replace('!###VLAN-PLACEHOLDER-3###', "$additionalvlantext") | Set-Content $configOutPath -Force
}
}
#--- ADDITIONAL VLAN 4
if ($additionalvlan -eq "y") {
write-host ""
$additionalvlan = Read-Host -Prompt ' Configure another VLAN? (y/n) [n] '
if($additionalvlan -eq $null){ $additionalvlan = "n" }
if($additionalvlan -eq ""){ $additionalvlan = "n" }
if ($additionalvlan -eq "y") {
$vlanNumber = Read-Host -Prompt ' VLAN Number '
if($vlanNumber -eq $null){ $vlanNumber = "!" }
if($vlanNumber -eq ""){ $vlanNumber = "!" }
$vlanDescription = Read-Host -Prompt ' VLAN Description (no spaces) '
if($vlanDescription -eq $null){ $vlanDescription = "!" }
if($vlanDescription -eq ""){ $vlanDescription = "!" }
$additionalvlantext = @"
vlan $vlanNumber
name $vlanDescription
"@
(Get-Content $configOutPath).replace('!###VLAN-PLACEHOLDER-4###', "$additionalvlantext") | Set-Content $configOutPath -Force
}
}
#--- ADDITIONAL VLAN 5
if ($additionalvlan -eq "y") {
write-host ""
$additionalvlan = Read-Host -Prompt ' Configure another VLAN? (y/n) [n] '
if($additionalvlan -eq $null){ $additionalvlan = "n" }
if($additionalvlan -eq ""){ $additionalvlan = "n" }
if ($additionalvlan -eq "y") {
$vlanNumber = Read-Host -Prompt ' VLAN Number '
if($vlanNumber -eq $null){ $vlanNumber = "!" }
if($vlanNumber -eq ""){ $vlanNumber = "!" }
$vlanDescription = Read-Host -Prompt ' VLAN Description (no spaces) '
if($vlanDescription -eq $null){ $vlanDescription = "!" }
if($vlanDescription -eq ""){ $vlanDescription = "!" }
$additionalvlantext = @"
vlan $vlanNumber
name $vlanDescription
"@
(Get-Content $configOutPath).replace('!###VLAN-PLACEHOLDER-5###', "$additionalvlantext") | Set-Content $configOutPath -Force
}
}
#-----------------------------------------------------------------------------------------
#--- ACCESS PORT CONFIGURATION
write-host ""
write-host " Access Port Configuration " -ForegroundColor Green
write-host ""
$accessPortsHowMany = Read-Host -Prompt ' Number of Access Ports on Switch 1 (24 or 48) [48] '
if($accessPortsHowMany -eq $null){ $accessPortsHowMany = "48" }
if($accessPortsHowMany -eq ""){ $accessPortsHowMany = "48" }
$switchAccessPorts = "Gi1/0/1 - $accessPortsHowMany"
(Get-Content $configOutPath).replace('###PORTS-1###', "$switchAccessPorts") | Set-Content $configOutPath -Force
#--- ADDITIONAL STACKED SWITCHES - 3750-X SWITCH 2
write-host ""
write-host " Additional Stacked Switches " -ForegroundColor Yellow
write-host ""
$3750xStack = Read-Host -Prompt ' Configure Switch 2 (stacked)? [N] '
if($3750xStack -eq $null){ $3750xStack = "n" }
if($3750xStack -eq ""){ $3750xStack = "n" }
if ($3750xStack -eq "y") {
$accessPortsHowMany = Read-Host -Prompt ' Number of Access Ports on Switch 2 (24 or 48) [48] '
if($accessPortsHowMany -eq $null){ $accessPortsHowMany = "48" }
if($accessPortsHowMany -eq ""){ $accessPortsHowMany = "48" }
$switchAccessPorts = ", Gi2/0/1 - $accessPortsHowMany"
(Get-Content $configOutPath).replace('!###PORTS-2###', "$switchAccessPorts") | Set-Content $configOutPath -Force
}
#--- ADDITIONAL STACKED SWITCHES - 3750-X SWITCH 3
if ($3750xStack -eq "y") {
write-host ""
$3750xStack = Read-Host -Prompt ' Configure Switch 3 (stacked)? [N] '
if($3750xStack -eq $null){ $3750xStack = "n" }
if($3750xStack -eq ""){ $3750xStack = "n" }
if ($3750xStack -eq "y") {
$accessPortsHowMany = Read-Host -Prompt ' Number of Access Ports on Switch 3 (24 or 48) [48] '
if($accessPortsHowMany -eq $null){ $accessPortsHowMany = "48" }
if($accessPortsHowMany -eq ""){ $accessPortsHowMany = "48" }
$switchAccessPorts = ". Gi3/0/1 - $accessPortsHowMany"
(Get-Content $configOutPath).replace('!###PORTS-3###', "$switchAccessPorts") | Set-Content $configOutPath -Force
}
}
#--- ADDITIONAL STACKED SWITCHES - 3750-X SWITCH 4
if ($3750xStack -eq "y") {
write-host ""
$3750xStack = Read-Host -Prompt ' Configure Switch 4 (stacked)? [N] '
if($3750xStack -eq $null){ $3750xStack = "n" }
if($3750xStack -eq ""){ $3750xStack = "n" }
if ($3750xStack -eq "y") {
$accessPortsHowMany = Read-Host -Prompt ' Number of Access Ports on Switch 4 (24 or 48) [48] '
if($accessPortsHowMany -eq $null){ $accessPortsHowMany = "48" }
if($accessPortsHowMany -eq ""){ $accessPortsHowMany = "48" }
$switchAccessPorts = ", Gi4/0/1 - $accessPortsHowMany"
(Get-Content $configOutPath).replace('!###PORTS-4###', "$switchAccessPorts") | Set-Content $configOutPath -Force
}
}
#--- ADDITIONAL STACKED SWITCHES - 3750-X SWITCH 5
if ($3750xStack -eq "y") {
write-host ""
$3750xStack = Read-Host -Prompt ' Configure Switch 5 (stacked)? [N] '
if($3750xStack -eq $null){ $3750xStack = "n" }
if($3750xStack -eq ""){ $3750xStack = "n" }
if ($3750xStack -eq "y") {
$accessPortsHowMany = Read-Host -Prompt ' Number of Access Ports on Switch 5 (24 or 48) [48] '
if($accessPortsHowMany -eq $null){ $accessPortsHowMany = "48" }
if($accessPortsHowMany -eq ""){ $accessPortsHowMany = "48" }
$switchAccessPorts = ", Gi5/0/1 - $accessPortsHowMany"
(Get-Content $configOutPath).replace('!###PORTS-5###', "$switchAccessPorts") | Set-Content $configOutPath -Force
}
}
#--- ADDITIONAL STACKED SWITCHES - 3750-X SWITCH 6
if ($3750xStack -eq "y") {
write-host ""
$3750xStack = Read-Host -Prompt ' Configure Switch 6 (stacked)? [N] '
if($3750xStack -eq $null){ $3750xStack = "n" }
if($3750xStack -eq ""){ $3750xStack = "n" }
if ($3750xStack -eq "y") {
$accessPortsHowMany = Read-Host -Prompt ' Number of Access Ports on Switch 6 (24 or 48) [48] '
if($accessPortsHowMany -eq $null){ $accessPortsHowMany = "48" }
if($accessPortsHowMany -eq ""){ $accessPortsHowMany = "48" }
$switchAccessPorts = ", Gi6/0/1 - $accessPortsHowMany"
(Get-Content $configOutPath).replace('!###PORTS-6###', "$switchAccessPorts") | Set-Content $configOutPath -Force
}
}
#--- ADDITIONAL STACKED SWITCHES - 3750-X SWITCH 7
if ($3750xStack -eq "y") {
write-host ""
$3750xStack = Read-Host -Prompt ' Configure Switch 7 (stacked)? [N] '
if($3750xStack -eq $null){ $3750xStack = "n" }
if($3750xStack -eq ""){ $3750xStack = "n" }
if ($3750xStack -eq "y") {
$accessPortsHowMany = Read-Host -Prompt ' Number of Access Ports on Switch 7 (24 or 48) [48] '
if($accessPortsHowMany -eq $null){ $accessPortsHowMany = "48" }
if($accessPortsHowMany -eq ""){ $accessPortsHowMany = "48" }
$switchAccessPorts = ", Gi7/0/1 - $accessPortsHowMany"
(Get-Content $configOutPath).replace('!###PORTS-7###', "$switchAccessPorts") | Set-Content $configOutPath -Force
}
}
#-----------------------------------------------------------------------------------------
#--- TRUNK PORT CONFIGURATION
write-host ""
write-host " Trunk Port Configuration " -ForegroundColor Green
write-host ""
$trunkPortNumber = Read-Host -Prompt ' Enter Trunk Port Interface [Gi1/1/1] '
if($trunkPortNumber -eq $null){ $trunkPortNumber = "Gi1/1/1" }
if($trunkPortNumber -eq ""){ $trunkPortNumber = "Gi1/1/1" }
Write-Host " Enter allowed VLANs separated by a comma [$mgmtVlan,$accessPortVlan,$accessPortVoiceVlan] " -NoNewline
$trunkPortAllowedVlans = Read-Host
if($trunkPortAllowedVlans -eq $null){ $trunkPortAllowedVlans = "$mgmtVlan,$accessPortVlan,$accessPortVoiceVlan" }
if($trunkPortAllowedVlans -eq ""){ $trunkPortAllowedVlans = "$mgmtVlan,$accessPortVlan,$accessPortVoiceVlan" }
(Get-Content $configOutPath).replace('###TRUNK-PORT###', "$trunkPortNumber") | Set-Content $configOutPath -Force
(Get-Content $configOutPath).replace('###ALLOWED-VLANS###', "$trunkPortAllowedVlans") | Set-Content $configOutPath -Force
#--- ETHERCHANNEL CONFIG
write-host ""
write-host " EtherChannel Configuration " -ForegroundColor Yellow
write-host ""
$configureEtherchannel = Read-Host -Prompt ' Configure EtherChannel? (y/n) [n] '
if($configureEtherchannel -eq $null){ $configureEtherchannel = "n" }
if($configureEtherchannel -eq ""){ $configureEtherchannel = "n" }
if ($configureEtherchannel -eq "y") {
$trunkPortNumber2 = Read-Host -Prompt ' Enter Second Trunk Port Interface [Gi1/1/2] '
if($trunkPortNumber2 -eq $null){ $trunkPortNumber2 = "Gi1/1/2" }
if($trunkPortNumber2 -eq ""){ $trunkPortNumber2 = "Gi1/1/2" }
$etherchannelInsert = @"
channel-group 1 mode on
interface Port-Channel 1
"@
$trunkPortNumber2insert = ", $trunkPortNumber2"
(Get-Content $configOutPath).replace('!###ETHERCHANNEL-CONFIG###', "$etherchannelInsert") | Set-Content $configOutPath -Force
(Get-Content $configOutPath).replace('!###TRUNK-PORT2###', "$trunkPortNumber2insert") | Set-Content $configOutPath -Force
}
#-----------------------------------------------------------------------------------------
#--- SNMP INFORMATION - GENERATED - WITH PROMPT
write-host ""
write-host " SNMP Information " -ForegroundColor Green
write-host ""
#--- SNMP LOCATION
Write-Host " Describe the location for a 911 Operator"
$snmpLocation = Read-Host -Prompt ' (Example: Bldg 123 3FL Rm100 Secret Squirrel Facility) '
if($snmpLocation -eq $null){ $snmpLocation = "Get $generatingUser to enter this" }
if($snmpLocation -eq ""){ $snmpLocation = "Get $generatingUser to enter this" }
(Get-Content $configOutPath).replace('###SNMP-LOCATION###', "$snmpLocation") | Set-Content $configOutPath -Force
Write-Host ""
#--- SNMP CONTACT
Write-Host " Describe the Organization or Entity and include a contact number"
$snmpContact = Read-Host -Prompt ' (Example: Secret Squirrel Facility 555-1337) '
if($snmpContact -eq $null){ $snmpContact = "Get $generatingUser to enter this" }
if($snmpContact -eq ""){ $snmpContact = "Get $generatingUser to enter this" }
(Get-Content $configOutPath).replace('###SNMP-CONTACT###', "$snmpContact") | Set-Content $configOutPath -Force
#=========================================================================================
#=========================================================================================
#--- OPEN CONFIG FILE
Invoke-Item $configOutPath
See a simpler version HERE