Cisco Certified Network Professional 2025 – 400 Free Practice Questions to Pass the Exam

Layer 3 traffic filters in a VLAN Access Control List (VACL) should be configured like route-maps because both serve similar purposes in controlling traffic based on Layer 3 information. Just as route-maps allow for the matching and manipulation of IP packets based on defined criteria, VACLs function to permit or deny traffic passing through a VLAN based on Layer 3 parameters such as source IP address, destination IP address, or protocol type.

Configuring VACLs in a manner similar to route-maps provides flexibility and precision in filtering capabilities. This style allows administrators to create more complex filtering logic beyond what simple access control lists (ACLs) can achieve, making it possible to handle a broader variety of traffic conditions and responses that align with specific network policies or security protocols.

Understanding this configuration approach is essential for effective network management, as it facilitates granular control over traffic flow and increases security within VLANs.