Ask any question about Networking here... and get an instant response.
Post this Question & Answer:
How do you configure a VLAN to improve network segmentation and security?
Asked on May 27, 2026
Answer
Configuring a VLAN (Virtual Local Area Network) is an effective way to improve network segmentation and security by isolating network traffic and reducing broadcast domains. VLANs are configured on network switches, and they allow for logical separation of devices within the same physical network infrastructure.
<!-- BEGIN COPY / PASTE -->
interface GigabitEthernet0/1
switchport mode access
switchport access vlan 10
interface Vlan10
ip address 192.168.10.1 255.255.255.0
no shutdown
<!-- END COPY / PASTE -->Additional Comment:
- VLANs reduce broadcast traffic and enhance security by isolating network segments.
- VLANs can be used to separate different types of traffic, such as voice, data, and management.
- Ensure that inter-VLAN routing is configured if communication between VLANs is necessary.
- Use VLAN tagging (802.1Q) for trunk links to carry multiple VLANs across switches.
- Implement access control lists (ACLs) to further control traffic between VLANs.
Recommended Links:
