A CCNA lab bench in your browser

Start routers, switches and PCs in seconds, configure them from an IOS command line, and grade your work task by task.

Nothing to install. Works in any modern browser.

Lab 02OSPF FundamentalsRunningGrade100%

Tasks

R1 Interface Provisioning
R2 Interface Provisioning
OSPF Initialization & Advertisement
Adjacency Verification

R1R2

R1#configure terminalR1(config)#interface ethernet0/0R1(config-if)#ip address 192.168.1.1 255.255.255.0R1(config-if)#no shutdown%LINK-3-UPDOWN: Interface Ethernet0/0, changed state to upR1(config-if)#router ospf 1R1(config-router)#network 192.168.1.0 0.0.0.255 area 0%OSPF-5-ADJCHG: Process 1, Nbr 192.168.1.2 on Ethernet0/0 from LOADING to FULL, Loading DoneR1(config-router)#endR1#

How a lab runs

Every lab is a small network that you build yourself, from the first interface to a working service.

1
Start the lab
Press Start and the devices boot on the lab server, each with its own console.
- R1 Ready
- SW1 Ready
- R2 Ready

Configure from the console

Type IOS commands as on real equipment. ? lists what can come next.

R1(config)#router ospf 1
R1(config-router)#network ?
  A.B.C.D  Network number
R1(config-router)#network

3
Grade your work
Grade at any time. Each task passes, or says what is still missing.
- Complete: R1 Interface Provisioning
- Complete: R2 Interface Provisioning
- Not complete: OSPF Initialization & AdvertisementR2: router ospf 1 is not configured.

What’s simulated

The parts of IOS the CCNA labs need, modelled so that a mistake fails for the same reason it would on real equipment. Commands outside that set are refused with a message.

Devices	Routers, layer 2 switches and PCs.
Command line	More than 300 IOS commands, with `?` help, Tab completion, abbreviations and `do` from configuration mode.
Switching	VLANs, 802.1Q trunks, VTP, PVST+ spanning tree with PortFast and BPDU guard, port security, and EtherChannel with LACP or PAgP.
Routing	Static routes, single-area OSPF, and router-on-a-stick with 802.1Q subinterfaces.
Services	DHCP server and relay, NTP with authentication, SSH and Telnet, CDP and LLDP, and syslog messages.
Verification	`show` output built from the live network state, `ping` and `traceroute`.
Grading	Each task is checked against the running configuration, the device state and connectivity, and failed tasks say what is missing.
Runs in	Any modern browser. Nothing to install and no device images.

Labs you can open now

Each lab comes with a topology, step-by-step tasks and a command reference.

Browse the labs

Your progress follows you

Sign in on any device and pick up the lab you were working on. Completed labs, best scores and grade reports stay with your account.