Enter departments and device counts. Blocks are allocated largest-first with VLSM, sized to fit the devices plus a gateway, and never smaller than a /30.
| VLAN | Name | Subnet | Mask | Gateway | DHCP pool | Usable | Spare |
|---|---|---|---|---|---|---|---|
| 12 | HR | 10.0.2.128/26 | 255.255.255.192 | 10.0.2.129 | 10.0.2.140 – 10.0.2.190 | 62 | 31 |
| 13 | Finance | 10.0.2.192/26 | 255.255.255.192 | 10.0.2.193 | 10.0.2.204 – 10.0.2.254 | 62 | 1 |
| 11 | Sales | 10.0.2.0/25 | 255.255.255.128 | 10.0.2.1 | 10.0.2.12 – 10.0.2.126 | 126 | 5 |
| 10 | Production | 10.0.0.0/23 | 255.255.254.0 | 10.0.0.1 | 10.0.0.12 – 10.0.1.254 | 510 | 109 |
! Cisco IOS / IOS-XE — generated by NetField
! 4 VLANs
! Review before applying. Interface names and trunk membership are site-specific.
configure terminal
!
vlan 10
name PRODUCTION
!
interface Vlan10
description PRODUCTION - 400 devices
ip address 10.0.0.1 255.255.254.0
no shutdown
!
ip dhcp excluded-address 10.0.0.0 10.0.0.12
ip dhcp pool PRODUCTION
network 10.0.0.0 255.255.254.0
default-router 10.0.0.1
dns-server 8.8.8.8
!
vlan 11
name SALES
!
interface Vlan11
description SALES - 120 devices
ip address 10.0.2.1 255.255.255.128
no shutdown
!
ip dhcp excluded-address 10.0.2.0 10.0.2.12
ip dhcp pool SALES
network 10.0.2.0 255.255.255.128
default-router 10.0.2.1
dns-server 8.8.8.8
!
vlan 12
name HR
!
interface Vlan12
description HR - 30 devices
ip address 10.0.2.129 255.255.255.192
no shutdown
!
ip dhcp excluded-address 10.0.2.128 10.0.2.140
ip dhcp pool HR
network 10.0.2.128 255.255.255.192
default-router 10.0.2.129
dns-server 8.8.8.8
!
vlan 13
name FINANCE
!
interface Vlan13
description FINANCE - 60 devices
ip address 10.0.2.193 255.255.255.192
no shutdown
!
ip dhcp excluded-address 10.0.2.192 10.0.2.204
ip dhcp pool FINANCE
network 10.0.2.192 255.255.255.192
default-router 10.0.2.193
dns-server 8.8.8.8
!
interface GigabitEthernet0/1
switchport mode trunk
switchport trunk allowed vlan 10,11,12,13
!
end
write memory