Why does Cisco force you to learn this topology? Because Lab 162 mirrors the Campus LAN Design:
If you work at any medium-to-large enterprise, the switch in your wiring closet is configured exactly like SW1 in this lab.
Let’s be honest: Access Control Lists (ACLs) can feel like abstract algebra when you first read about them. But when you fire up Cisco Lab 162, everything changes. This lab forces you to move beyond theory and actually defend a network.
Lab 162 is the rite of passage for understanding Extended ACLs (access-list 100-199). If you have been struggling with wildcard masks or the logic of deny vs. permit, this walkthrough is for you.
We live in a zero-trust, cloud-native world. So why learn legacy ACLs? cisco+lab+162
Before we touch the router, we must prepare the switching infrastructure. We need to create the VLANs and assign the access ports.
1. Create VLANs and Name Them:
S1> enable
S1# configure terminal
S1(config)# vlan 10
S1(config-vlan)# name Sales
S1(config-vlan)# exit
S1(config)# vlan 20
S1(config-vlan)# Name Engineering
S1(config-vlan)# exit
2. Configure Access Interfaces:
Connect the PCs to the switch and assign the ports to the correct VLANs. Let's assume PC1 is on interface FastEthernet0/1 and PC2 is on FastEthernet0/2.
S1(config)# interface fa0/1
S1(config-if)# switchport mode access
S1(config-if)# switchport access vlan 10
S1(config-if)# no shutdown
S1(config)# interface fa0/2
S1(config-if)# switchport mode access
S1(config-if)# switchport access vlan 20
S1(config-if)# no shutdown
3. Configure the Trunk Interface:
The link connecting the Switch to the Router must be a trunk to carry traffic for both VLAN 10 and 20. Let's assume the uplink is GigabitEthernet0/1. Why does Cisco force you to learn this topology
S1(config)# interface gi0/1
S1(config-if)# switchport mode trunk
S1(config-if)# no shutdown
If you actually meant a different lab number (e.g., 1.6.1, 2.6.2, or 16.2), let me know and I’ll give you the correct details.
Cisco Lab 162 exemplifies a focused, hands-on exercise designed to deepen networking students’ practical understanding of enterprise routing, switching, and security concepts. While lab numbers vary between courses and materials, a typical “Lab 162” scenario centers on integrating multiple technologies—dynamic routing protocols, VLAN segmentation, inter-VLAN routing, basic access control, and troubleshooting—into a single cohesive topology that mirrors small-to-medium business network requirements.
Topology and Objectives
Key Configurations
Learning Outcomes
Typical Tasks and Exercises
Assessment and Variations
Conclusion Cisco Lab 162 serves as a compact but comprehensive practical exercise that synthesizes multiple networking domains into a realistic, testable environment. By moving from switch-level VLAN configuration to inter-device routing, security basics, and troubleshooting, the lab prepares students for real-world network deployment and maintenance—reinforcing theoretical knowledge through applied configuration and problem-solving. If you work at any medium-to-large enterprise, the
Blog Title: Crushing Cisco Lab 162: Mastering Extended ACLs & Network Defense
Posted by: [Your Name] Date: April 23, 2026 Category: Cisco Labs / CCNA Security
