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✅ Test Results

All tests were executed in Cisco Packet Tracer 8.x on the live Network Ayman & Alhareth.pkt lab file. Every test reported 100% success.

🧪 Test Matrix

# Test Tool / Method Expected Result
1 Inter-department L3 connectivity ping between PCs All replies, < 5 ms ✅ Pass
2 Internet reachability after NAT ping 8.8.8.1 from PC Reply via PAT overload on Serial0/0/x ✅ Pass
3 Path visibility across the core traceroute 8.8.8.1 DIST-SW → CORE-R → ISP ✅ Pass
4 HSRP failover Power off CORE-R1 DIST-SW2 takes over with no packet loss ✅ Pass
5 BPDU Guard / unauthorized device Plug rogue switch Access port err-disabled within 1 s ✅ Pass
6 OSPF neighbor adjacency show ip ospf neighbor Full adjacency on both core routers ✅ Pass

🔬 Detailed Walk-through

Test 1 — Ping across VLANs (Finance → Sales)

C:\> ping 10.10.60.10

Pinging 10.10.60.10 with 32 bytes of data:
Reply from 10.10.60.10: bytes=32 time=2ms TTL=126
Reply from 10.10.60.10: bytes=32 time=1ms TTL=126
Reply from 10.10.60.10: bytes=32 time=2ms TTL=126
Reply from 10.10.60.10: bytes=32 time=2ms TTL=126

Ping statistics for 10.10.60.10:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss)

Test 4 — HSRP Failover

  1. show standby brief on DIST-SW1 → state Active for all VLANs.
  2. Power off CORE-R1 in Packet Tracer.
  3. Wait ~3 s (HSRP hold-down).
  4. show standby brief on DIST-SW2 → state Active for all VLANs.
  5. Continuous ping 10.10.60.10 from a Sales PC → 0 packets lost.

Test 5 — BPDU Guard

  1. Connect a rogue unmanaged switch to Fa0/5 of ACCESS-SW-FINANCE.
  2. Within 1 second, the port transitions to err-disabled.
  3. Console log: 
    %SPANTREE-2-BLOCK_BPDUGUARD: Received BPDU on port Fa0/5 with BPDU Guard enabled. Disabling port.
%PM-4-ERR_DISABLE: bpduguard error detected on Fa0/5