This project demonstrates how to use Cisco Discovery Protocol (CDP) to discover connected devices in a multi-switch network.
The network consists of 2 Multilayer Switches (MLS) and 4 Access Switches connected in a hierarchical topology.
Figure: Network Topology – CDP Protocol
| Device | Interface VLAN | IP Address |
|---|---|---|
| MLS-Core-1 | VLAN 10 | 192.168.10.1 |
| MLS-Core-1 | VLAN 20 | 192.168.20.1 |
| MLS-Core-2 | VLAN 30 | 192.168.30.1 |
| MLS-Core-2 | VLAN 40 | 192.168.40.1 |
| Access-SW10 | VLAN 10 | 192.168.10.10 |
| Access-SW20 | VLAN 20 | 192.168.20.10 |
| Access-SW30 | VLAN 30 | 192.168.30.10 |
| Access-SW40 | VLAN 40 | 192.168.40.10 |
Device ID Local Intrfce Holdtme Capability Platform Port ID
Access-SW20 Fa0/5 139 S 2960 Fa0/1
MLS-Core-2 Fa0/1 139 3560 Fa0/1
Access-SW10 Fa0/6 139 S 2960 Fa0/1
Device ID Local Intrfce Holdtme Capability Platform Port ID
Access-SW30 Fa0/2 162 S 2960 Fa0/1
Access-SW40 Fa0/3 162 S 2960 Fa0/1
MLS-Core-1 Fa0/1 162 3560 Fa0/1
- CDP successfully discovered all neighbors between Core and Access Switches.
- Inter-VLAN routing is configured on MLS devices.
- Trunk ports are using 802.1Q encapsulation.
- Each Access Switch belongs to a specific VLAN and is reachable via its MLS.
Cisco Networking CCNA PacketTracer CDP Layer2 Switching