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Create Cisco VLAN Config with Powershell

Thomas Maurer
Updated
1–2 minutes
6 comments on Create Cisco VLAN Config with Powershell

Powershell HeaderSmall Script for creating a simple CISCO VLAN config.

# Create Cisco VLANs Config
#
# www.thomasmaurer.ch
# (c) 2010 Thomas Maurer
#
#

# First VLAN which should be created?
[int]$VLAN = 1201
# How many VLANs should be created?
[int]$VLANCount = 25
# Start IP Address
[int]$IP = 1
# Subnet
[string]$Subnetmaskv4 = "255.255.255.252"
[string]$Subnetmaskv6 = "64"
# Next IP (Its Important for Subnet)
[int]$AddtoIP = 4
# IPv4 Address Template
[string]$IPv4AddressTemplate = "192.168.1."
# IPv6 Address Template
[string]$IPv6AddressTemplate = "2002:1b50:251:22:192:168:1:"
# Config File Name
[String]$ConfigFile = "C:\Users\tm\Desktop\config.txt"

# Creats Config
for($counter = 0;$counter -le $VLANCount;$counter++) {
[string]$interfaceconf = "interface Vlan" + $VLAN
[string]$IPv4conf = "ip address " + $IPv4AddressTemplate + $IP + " " + $Subnetmaskv4
[string]$IPv6conf = "ipv6 address " + $IPv6AddressTemplate + $IP + "/" + $Subnetmaskv6
Add-Content $ConfigFile $interfaceconf
Add-Content $ConfigFile "no shutdown"
Add-Content $ConfigFile $IPv4conf
Add-Content $ConfigFile $IPv6conf
$IP = $IP + $AddtoIP
}
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Thomas Maurer
Thomas is the EMEA Global Black Belt (GBB) for Sovereign Cloud at Microsoft, helping organizations across the region harness Microsoft’s sovereign, hybrid, multicloud, and edge solutions. He works directly with C-level leaders and technical teams to remove roadblocks, accelerate digital transformation, and shape long-term cloud strategies that meet business and regulatory needs. With over 15 years of experience in cloud and datacenter, including his previous role as Principal Program Manager and Chief Evangelist for Azure Hybrid, he combines deep technical expertise with a passion for customer success. He specializes in creating scalable architectures, solution accelerators, and thought leadership that drive adoption and innovation on Azure. Thomas is a passionate community advocate and frequently speaks at industry events such as Microsoft Ignite and Microsoft TechDays. He shares his expertise through his Cloud and Datacenter Blog at www.thomasmaurer.ch and on LinkedIn and X.com www.twitter.com/thomasmaurer.

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6 responses

  1. Paul Wonnell Avatar
    Paul Wonnell

    New to Powershell – just recently inherited a network of Cisco switches and want to ssh to each switch down load to running configs, startup and do a show ver. Have you done anything like this? I know there are a many tools that will do this, but $ are scarce here so I have to use what I have.

    Reply
  2. Paul Wonnell Avatar
    Paul Wonnell

    New to Powershell – just recently inherited a network of Cisco switches and want to ssh to each switch down load to running configs, startup and do a show ver. Have you done anything like this? I know there are a many tools that will do this, but $ are scarce here so I have to use what I have.

    Reply
  3. Thomas Maurer Avatar
    Thomas Maurer

    Hi Paul

    I never done exactly this before, but I did some other scripts which did automatically connect to other servers via ssh using putty. Basically you could run a powershell script which connects to the switches via putty and runs an other (IOS) script which does what ever you want on your switch.

    Reply
  4. Thomas Maurer Avatar
    Thomas Maurer

    Hi Paul

    I never done exactly this before, but I did some other scripts which did automatically connect to other servers via ssh using putty. Basically you could run a powershell script which connects to the switches via putty and runs an other (IOS) script which does what ever you want on your switch.

    Reply
  5. Dan Avatar
    Dan

    Interesting script. Were you intending to create 26 subnets, all tagged 1201?

    Reply
    1. Thomas Maurer Avatar
      Thomas Maurer

      It’s a old post but this could be a mistake :)

      Reply

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