VLAN 10
Users
10.40.0.0/2510.40.0.1 – 10.40.0.126126 usable · Broadcast 10.40.0.127
VLAN Planner
Design VLAN IDs, names and IPv4 subnets, then export the plan.
NameVLAN IDHosts
VLAN 20
Voice
10.40.0.128/2610.40.0.129 – 10.40.0.19062 usable · Broadcast 10.40.0.191
VLAN 30
Servers
10.40.0.192/2710.40.0.193 – 10.40.0.22230 usable · Broadcast 10.40.0.223
EXPORT CONFIGURATION
Terraform for your VLAN plan
Generate a provider starting point from the calculated VLAN CIDRs.resource "aws_security_group" "vlan_10" { name = "vlan-10-Users" vpc_id = var.vpc_id ingress { from_port = 0 to_port = 0 protocol = "-1" cidr_blocks = ["10.40.0.0/25"] } }
resource "aws_security_group" "vlan_20" { name = "vlan-20-Voice" vpc_id = var.vpc_id ingress { from_port = 0 to_port = 0 protocol = "-1" cidr_blocks = ["10.40.0.128/26"] } }
resource "aws_security_group" "vlan_30" { name = "vlan-30-Servers" vpc_id = var.vpc_id ingress { from_port = 0 to_port = 0 protocol = "-1" cidr_blocks = ["10.40.0.192/27"] } }Networking TOOL
VLAN Planner
Design VLAN IDs, names and IPv4 subnets, then export the plan.
When to use this tool
Use this planner to document segmentation before configuring switches, routers or firewalls.
Use it in three steps
- Add each VLAN, select its host capacity and review the calculated address ranges.
- Review the calculated values against your environment and its requirements.
- Copy or document the result only after validating it for production use.