A multi-domain network topology built in Cisco Packet Tracer, integrating three different routing protocols with mutual redistribution, Frame Relay WAN links, VLAN segmentation, and DHCP services.
- Multi-area routing with redistribution: OSPF (area 0), RIP v2, and multiple EIGRP autonomous systems (AS 1, 5, 8) coexist across different routers, with two-way route redistribution configured wherever protocol domains meet (e.g.,
redistribute rip subnetson OSPF,redistribute ospf 1 metric 5on RIP) - Frame Relay WAN backbone: Routers 0, 3, 6, and 7 connect over serial interfaces using Frame Relay encapsulation with multiple DLCIs, running OSPF over the Frame Relay cloud
- VLAN segmentation with trunking: Switches configure trunk ports (
switchport mode trunk) and access ports assigned to specific VLANs (10, 20, 30, 40) - Router-on-a-stick / sub-interfaces: Routers use dot1Q-tagged sub-interfaces (e.g.,
gigabitEthernet 0/1.10) to route between VLANs - DHCP services: Each VLAN has a dedicated DHCP pool with a default gateway and DNS server
- Switch port security: Sticky MAC address learning with a restrict violation policy on access ports
- Spanning Tree: Rapid PVST mode with PortFast enabled on edge switches
| Segment | Routers | Protocol |
|---|---|---|
| WAN backbone (Frame Relay) | R0, R3, R6, R7 | OSPF area 0 |
| Branch 1 | R1 ↔ R2 | RIP v2 (redistributed into OSPF) |
| Branch 2 | R3 ↔ R4 ↔ R5 | EIGRP AS 5 ↔ EIGRP AS 8 (redistributed) |
| Branch 3 | R7 ↔ R8, R9 | OSPF ↔ EIGRP AS 1 (redistributed) |
| Access layer | Switch 1, 3, 4 | VLANs 10/20/30/40 with DHCP |
The Frame Relay cloud (Cloud0) maps DLCIs between four serial interfaces, forming a full-mesh WAN backbone:
| Interface | DLCIs Configured |
|---|---|
| Serial0 | 100 (cairo), 101 (cairo1), 102 (cairo2) |
| Serial1 | 400 (alex), 401 (alex1), 402 (alex2) |
| Serial2 | 200 (sena), 201 (sena1), 202 (sena2) |
| Serial3 | 300 (giza), 301 (giza1), 302 (giza2) |
final_project.pkt— the complete Packet Tracer topology (open with Cisco Packet Tracer)all commands.txt— full CLI configuration for every router and switch in the topologytopology.png— network diagramframe-relay-config/— Frame Relay DLCI mapping and per-interface configuration screenshots
- Cisco Packet Tracer
- Cisco IOS CLI (OSPF, RIP v2, EIGRP, Frame Relay, VLANs, DHCP, Spanning Tree, Port Security)
- Install Cisco Packet Tracer (free with a Cisco Networking Academy account)
- Open
final_project.pkt - Use Simulation mode to trace packets across routing domains, or reference
all commands.txtfor the full CLI configuration of each device