Lab ID: PTL-0049
Title: Campus Distribution and Access VLAN Design
Status: TESTED_PASS (Verified live in Cisco Packet Tracer 9.0.1 via MCP loopback bridge automation)
1. Packet Tracer Topology Construction Manifest#
To construct or manually verify this topology in Cisco Packet Tracer:
Device Inventory#
| Device Role | PT Device Model | Display Name | Modules / Slots |
|---|---|---|---|
| Multilayer Distribution Switch | Cisco Catalyst 3560-24PS | DLS-1 | 24 FastEthernet + 2 GigabitEthernet ports |
| Building A Access Switch | Cisco Catalyst 2960-24TT | ALS-1 | 24 FastEthernet + 2 GigabitEthernet ports |
| Server Farm Access Switch | Cisco Catalyst 2960-24TT | ALS-2 | 24 FastEthernet + 2 GigabitEthernet ports |
| Academic Faculty Client | PC-PT | PC-Faculty | FastEthernet0 (192.168.10.10/24, gw 192.168.10.1) |
| Student Lab Client | PC-PT | PC-Student | FastEthernet0 (192.168.20.10/24, gw 192.168.20.1) |
| Campus Application Server | Server-PT | Campus-Srv | FastEthernet0 (192.168.30.10/24, gw 192.168.30.1) |
Physical Cabling Matrix#
| Link ID | Source Device | Source Port | Destination Device | Destination Port | Cable Type |
|---|---|---|---|---|---|
| L-01 | DLS-1 | GigabitEthernet0/1 | ALS-1 | GigabitEthernet0/1 | Copper Straight-Through |
| L-02 | DLS-1 | GigabitEthernet0/2 | ALS-2 | GigabitEthernet0/1 | Copper Straight-Through |
| L-03 | ALS-1 | FastEthernet0/1 | PC-Faculty | FastEthernet0 | Copper Straight-Through |
| L-04 | ALS-1 | FastEthernet0/2 | PC-Student | FastEthernet0 | Copper Straight-Through |
| L-05 | ALS-2 | FastEthernet0/1 | Campus-Srv | FastEthernet0 | Copper Straight-Through |
2. Positive Verification Test Matrix#
| Test ID | Objective | Command / Procedure | Expected Result | Pass Criteria |
|---|---|---|---|---|
| POS-01 | DLS-1 Hardware Routing & SVI Audit | DLS-1# show ip route connected |
Connected routes for 192.168.10.0/24, 192.168.20.0/24, 192.168.30.0/24, 192.168.99.0/24 are present and active |
Hardware routing enabled on all SVIs |
| POS-02 | 802.1Q Trunking & Native VLAN Audit | show interfaces trunk on DLS-1, ALS-1, ALS-2 |
802.1Q encapsulation, Native VLAN 99, allowed VLANs 10,20,30,99 active across Gi0/1 and Gi0/2 uplinks |
Trunk configuration aligned across distribution and access |
| POS-03 | Faculty Local Gateway Reachability | PC-Faculty> ping 192.168.10.1 |
4/4 echo replies received (0% packet loss) | Intra-VLAN communication to SVI gateway verified |
| POS-04 | Student Local Gateway Reachability | PC-Student> ping 192.168.20.1 |
4/4 echo replies received (0% packet loss) | Intra-VLAN communication to SVI gateway verified |
| POS-05 | Faculty to Server Inter-VLAN Reachability | PC-Faculty> ping 192.168.30.10 |
4/4 echo replies received (0% packet loss, TTL=127) | Inter-VLAN routed data plane delivery verified |
| POS-06 | Student to Server Inter-VLAN Reachability | PC-Student> ping 192.168.30.10 |
4/4 echo replies received (0% packet loss, TTL=127) | Inter-VLAN routed data plane delivery verified |
| POS-07 | Inter-VLAN Client-to-Client Reachability | PC-Faculty> ping 192.168.20.10 |
4/4 echo replies received (0% packet loss, TTL=127) | Inter-VLAN routed data plane delivery verified |
3. Negative & Fault Tolerance Test Matrix#
| Test ID | Fault Scenario | Injection Procedure | Observed Symptom | Recovery Procedure |
|---|---|---|---|---|
| NEG-01 | Starter State: Access Port VLAN Misassignment | On ALS-1 Fa0/2, assign port to VLAN 1. Test ping from PC-Student to gateway 192.168.20.1. |
Ping fails with 100% loss (Request timed out). PC-Student is isolated in an unrouted broadcast domain. |
Reassign ALS-1 Fa0/2 to VLAN 20: switchport access vlan 20. |
| NEG-02 | Starter State: Disabled IP Routing & Pruned Trunk | On DLS-1, issue no ip routing. On ALS-2 Gi0/1, configure switchport trunk allowed vlan 10,20,99 (omitting VLAN 30). Test ping from PC-Faculty to Campus-Srv (192.168.30.10). |
Ping fails with 100% loss (Request timed out). DLS-1 refuses inter-VLAN forwarding and ALS-2 drops VLAN 30 frames. |
Activate ip routing on DLS-1 and add VLAN 30 to ALS-2 Gi0/1: switchport trunk allowed vlan add 30. |
4. Reload and Persistence Verification#
completed.pktreloaded cleanly viaipc.appWindow().fileOpen().- Multilayer and access switches preserved NVRAM startup configurations across reload.
- Full end-to-end reachability across all campus VLANs confirmed after reload.
- Reopened
starter.pktcleanly and confirmed initial faulted state is intact for learner exercise.