Labs & Topologies

A collection of the labs and topologies I built while practicing for the CCNA. These were temporary lab setups, not production designs.

Just a Sample

During my CCNA preparation I built many more labs than the ones shown here. This page is simply a small sample of the ones worth keeping, with their diagrams.

OSPF Lab

Single-area OSPF practice in EVE-NG: building adjacencies, DR/BDR election, and path selection across a multi-router topology bridged to the physical switches.

OSPF topology used for adjacency, DR/BDR, and path-selection practice.

SNMP Server Lab

SNMP monitoring of the physical Catalyst 2960 and a virtual IOSv router in EVE-NG using the iReasoning MIB Browser, with agents isolated in the management VLAN (102). SNMP v2c and v3 configured.

SNMP lab topology — server and monitored agents in the management VLAN.

Switching / VLAN Topology

Multi-switch Layer 2 topology for VLAN, trunking, and inter-VLAN routing practice between the Catalyst 3560-CX and 2960.

VLAN/trunk topology across the physical switches.

The four lab PCs are VMs on the HP t740, each mapped to a physical network card bridged to the 3560-CX, so virtual hosts reach the physical switches over real cabling.