Anand Software blog on update to CCNA Netsim to include several labs on Site to Site VPN and FHRP (First Hop Redundancy Protocol). NetSim, used to represent Network Simulator, is tool to configure and troubleshoot wide area networks, particularly in preparing for CCNA certification.

The page provides help on navigating the CCNA Network simulator through various sections, such as designing your own labs, configuring the lab exercises, exporting the designed labs to the simulator, and troubleshooting the same.

Offers CCNA networking labs for virual practice. The network simulator labs include RIPv2 and OSPF configuration, BGP configuraiton, and vlan troubleshooting, vtp and standby setup, CDP show commands, port security configuration, STP configuration and troubleshooting. Check out the product page for complete list of available labs.

Offers a list of available comptia netplus labs for practice. Candidates preparing for Comptia Network+ exam may find it useful to have some hands on experience with configuring DHCP, DNS, AAA, Radius, VLAN, VTP, and VPN connections. It is possible to have your own labs configured. Also, check out the practice tests for Network+ certification, provided with most relevant questions.