L'acardia Academy

Cisco Packet Tracer Labs

Topology diagrams, device configs, and instructor answer sheets for CCNA-aligned exercises.

Packet Tracer

VLAN Segmentation with Packet Tracer

Create VLANs 10, 20, 30; assign ports; verify isolation between departments.

Topology: Three 2960 switches, one router-on-a-stick optional for inter-VLAN in advanced variant.

Objectives

  • Create named VLANs
  • Assign access ports
  • Verify with show vlan brief
Device configuration (sample)
enable
configure terminal
vlan 10
 name SALES
vlan 20
 name ENGINEERING
vlan 30
 name GUEST
interface range fa0/1-8
 switchport mode access
 switchport access vlan 10
interface range fa0/9-16
 switchport mode access
 switchport access vlan 20
end
write memory
Instructor answer sheet

Expected: VLANs 10/20/30 created; Fa0/1-8 in VLAN 10; Fa0/9-16 in VLAN 20. PCs in different VLANs should not ping without L3 gateway.

Packet Tracer

Inter-VLAN Routing (Router-on-a-Stick)

Configure subinterfaces for VLAN 10 and 20 with 802.1Q encapsulation.

Topology: 1 router R1, 1 switch SW1, 2 PCs per VLAN.

Objectives

  • Trunk on switch
  • Subinterfaces on router
  • PC gateways set
Device configuration (sample)
interface g0/0.10
 encapsulation dot1Q 10
 ip address 192.168.10.1 255.255.255.0
interface g0/0.20
 encapsulation dot1Q 20
 ip address 192.168.20.1 255.255.255.0
Instructor answer sheet

PCs use respective .1 gateways; ping across VLANs succeeds.

Packet Tracer

Static Routing Lab

Three-router topology with static routes to remote LANs.

Topology: R1-R2-R3 linear; LANs behind R1 and R3.

Objectives

  • Interface IPs on all routers
  • Static routes toward remote networks
Device configuration (sample)
ip route 192.168.30.0 255.255.255.0 10.0.12.2
ip route 10.0.23.0 255.255.255.252 10.0.12.2
Instructor answer sheet

Full mesh of statics or summary on R2; end-to-end ping works.

Packet Tracer

OSPF Single Area

Enable OSPF process 1 area 0 on all router interfaces in 10.x.x.x space.

Topology: Triangle of three routers.

Objectives

  • OSPF neighbors FULL
  • Routing table contains O IA routes
Device configuration (sample)
router ospf 1
 network 10.0.0.0 0.0.255.255 area 0
 passive-interface g0/0
Instructor answer sheet

show ip ospf neighbor - all FULL; ping across OSPF domain.

Packet Tracer

Extended ACL Lab

Permit HTTP/HTTPS from inside; deny all other inbound on outside interface.

Topology: Inside LAN, firewall router, simulated internet.

Objectives

  • Named ACL
  • Applied inbound on correct interface
  • Implicit deny tested
Device configuration (sample)
ip access-list extended INSIDE_OUT
 permit tcp 192.168.1.0 0.0.0.255 any eq 80
 permit tcp 192.168.1.0 0.0.0.255 any eq 443
 deny ip any any
interface g0/1
 ip access-group INSIDE_OUT in
Instructor answer sheet

Telnet blocked; web permitted; log option optional for grading.

Packet Tracer

DHCP & NAT Configuration

Router as DHCP server and PAT overload for internet access.

Topology: Inside hosts DHCP; outside simulated.

Objectives

  • DHCP lease issued
  • NAT translations visible
Device configuration (sample)
ip dhcp pool INSIDE
 network 192.168.1.0 255.255.255.0
 default-router 192.168.1.1
ip nat inside source list 1 interface g0/1 overload
access-list 1 permit 192.168.1.0 0.0.0.255
Instructor answer sheet

show ip dhcp binding; show ip nat translations after ping 8.8.8.8.