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Aug 15, 2026
New lessons - OSPF
2 new lessons covering loopback interfaces have been added to Part 2A - Module 2 (Introduction to OSPF).
Aug 14, 2026
Bug Fix - DHCP Relay
A recent bug was preventing DHCP offer messages from being forwarded correctly via devices that had an ip helper-address configured. This has been fixed.
Jul 17, 2026
Feature update - Source NAT
Source NAT on routers and layer 3 switches now require the ip nat inside source list command to specify the addresses that must be sources NATted. The NAT lessons in Part 1A - Module 6 have been updated accordingly.
Feature added - standard access-lists
You can now configure standard access-lists on routers and layer 3 switches. The access lists can be used to configure source NAT.
Jun 02, 2026
New Feature - Notifications in Simulators / Build your own labs
When you build a custom lab, the system automatically generates notifications if you are missing certain configurations such as:
- IP routing not being enabled on a layer 3 switch that is expected to route traffic
- Missing Source NAT configuration a router connected to the Internet
These notifications appear near the top right corner of the page after a delay that gives you the time to identify these missing configuration items on your own.
