Networking Task: VLAN Setup and Docker Networks

Goal

Isolate container networks or set up virtual LANs for system-level separation.

VLAN on host (example with nmcli)

nmcli con add type vlan con-name vlan10 dev eth0 id 10 ip4 192.168.10.1/24
nmcli con up vlan10

Docker Custom Bridge

docker network create   --driver bridge   --subnet 192.168.100.0/24   custom-net

Assign Static IP in Compose

networks:
  internalservices:
    ipam:
      config:
        - subnet: 192.168.100.0/24

services:
  app:
    networks:
      internalservices:
        ipv4_address: 192.168.100.10

Tools

• nmcli, docker network ls, Docker Compose