Cisco Networking/CCENT/Lab Setup
< Cisco Networking | CCENT
This lesson covers lab setup using GNS3.
Objectives and Skills
editObjectives and skills for for Cisco CCENT certification are covered in detail in other lessons. This lesson helps you:
- Set up a lab environment to practice hands-on activities with Cisco routing and switching using GNS3.
Readings
editMultimedia
editActivities
edit- Review SourceForge: GNS3 Tutorial. Download and install GNS3 on your system.
- Review GNS3: Cisco IOS Images, GNS3: Adding IOS Images, and GNS3: Hardware Emulated by GNS3. Add one or more Cisco router IOS images to Dynamips/GNS3. Be sure to include an image from the 2600, 3600, or 3700 series that supports a Network Module slot to allow for both routing and switching configurations.
- Add a router image.
- Add the router image again as an EtherSwitch router.
- Test GNS3 router support.
- Add a router to a new GNS3 project.
- Start the device.
- View the console to confirm that it started correctly.
- Show the running configuration using the following command.
show running-config
- Test GNS3 virtual PC support.
- Add a router to a new GNS3 project or use the project created above.
- Add a VPCS PC to the project.
- Add a link to connect the following.
- PC1 Ethernet0 <-> R1 FastEthernet0/0.
- Start the devices.
- Open the console for PC1. Set the IP address for PC1 using the following command.
ip 192.168.1.11 255.255.255.0 192.168.1.1
- Open the console for R1. Set the IP address for R1 using the following commands.
enable
configure terminal
interface fastethernet0/0
ip address 192.168.1.1 255.255.255.0
no shutdown
exit
exit
- Open the console for PC1. Ping R1 using the following command.
ping 192.168.1.1
- Test GNS3 EtherSwitch router support.
- Add an EtherSwitch router to a new GNS3 project.
- Add two VPCS PCs to the project.
- Add links to connect the following.
- PC1 Ethernet0 <-> ESW1 FastEthernet1/1.
- PC2 Ethernet0 <-> ESW1 FastEthernet1/2.
- Start the devices.
- Open the console for PC1. Set the IP address for PC1 using the following command.
ip 192.168.1.11 255.255.255.0 192.168.1.1
- Open the console for PC2. Set the IP address for PC2 using the following command.
ip 192.168.1.12 255.255.255.0 192.168.1.1
- Using the console for PC1, ping PC2 using the following command.
ping 192.168.1.12
- Using the console for PC2, ping PC1 using the following command.
ping 192.168.1.11
- If the pings are not successful, try replacing the EtherSwitch router with an Ethernet hub or switch and repeat the tests.
Lesson Summary
edit- GNS3 is a graphical network simulator supporting a variety of products from vendors including Alcatel-Lucent, Arista, Cisco, Extreme Networks, Fortigate, Juniper, Microtik, and Vyatta.[1]
- GNS3 is available for Windows, Linux, and macOS platforms.[2]
- The standard GNS3 Windows installation package includes WinPcap, Wireshark, Dynamips, QEMU, and VPCS Virtual PC Simulator.[3]
- WinPcap provides a packet-capture and filtering engine for Windows systems.[4]
- Libpcap provides a packet-capturing and filtering engine for Unix-like systems.[5]
- Wireshark is a free and open-source packet analyzer.[6]
- Dynamips is an emulator computer program that was created to emulate Cisco routers.[7]
- QEMU (Quick Emulator) is a free and open-source hosted hypervisor that performs hardware virtualization, and is used by GNS3 to run Cisco ASA, PIX and IDS, as well as conventional operating systems.[8][9]
- VPCS provides a simulated command-line interface for hosts connected to routers in a GNS3 / Dynamips network.[10]
- The GNS3 installation package does not include Cisco IOS images. IOS images must be loaded separately after GNS3 is installed.
- GNS3 cannot run Cisco switch IOS images, but does support EtherSwitch network modules to provide switching configurations on supported routers.[11]
- GNS3 support for EtherSwitch network modules includes Cisco routers from the 2600, 3600, and 3700 series.[12]
- The GNS3 user interface includes windows for node types, network topology, topology summary, and the Dynagen console for Dynamips.[13]
- Each IOS image must be loaded into GNS3 and configured with an Idle PC value before it can be used in a network topology.[14]
- After adding devices to a network topology, the devices must be started in order to access the device console.[15]
- Consoles are accessed through terminal emulation, Telnet, or SSH connections.[16]
- Network topologies may be saved and opened using the GNS3 File menu.[17]
Key Terms
edit- ping
- A computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network and to measure the round-trip time for messages sent from the originating host to a destination computer and back.[18]
Review Questions
edit-
GNS3 is a graphical network simulator supporting a variety of products from vendors including _____.GNS3 is a graphical network simulator supporting a variety of products from vendors including Alcatel-Lucent, Arista, Cisco, Extreme Networks, Fortigate, Juniper, Microtik, and Vyatta.
-
GNS3 is available for _____ platforms.GNS3 is available for Windows, Linux, and macOS platforms.
-
The standard GNS3 Windows installation package includes _____.The standard GNS3 Windows installation package includes WinPcap, Wireshark, Dynamips, QEMU, and VPCS Virtual PC Simulator.
-
WinPcap provides _____.WinPcap provides a packet-capture and filtering engine for Windows systems.
-
Libpcap provides _____.Libpcap provides a packet-capturing and filtering engine for Unix-like systems.
-
Wireshark is _____.Wireshark is a free and open-source packet analyzer.
-
Dynamips is _____.Dynamips is an emulator computer program that was created to emulate Cisco routers.
-
QEMU (Quick Emulator) is _____.QEMU (Quick Emulator) is a free and open-source hosted hypervisor that performs hardware virtualization, and is used by GNS3 to run Cisco ASA, PIX and IDS, as well as conventional operating systems.
-
VPCS provides _____.VPCS provides a simulated command-line interface for hosts connected to routers in a GNS3 / Dynamips network.
-
The GNS3 installation package does not include _____.The GNS3 installation package does not include Cisco IOS images. IOS images must be loaded separately after GNS3 is installed.
-
GNS3 cannot run _____, but does support _____.GNS3 cannot run Cisco switch IOS images, but does support EtherSwitch network modules to provide switching configurations on supported routers.
-
GNS3 support for EtherSwitch network modules includes Cisco routers from the _____ series.GNS3 support for EtherSwitch network modules includes Cisco routers from the 2600, 3600, and 3700 series.
-
The GNS3 user interface includes windows for _____.The GNS3 user interface includes windows for node types, network topology, topology summary, and the Dynagen console for Dynamips.
-
Each IOS image must be loaded into GNS3 and configured with _____ before it can be used in a network topology.Each IOS image must be loaded into GNS3 and configured with an Idle PC value before it can be used in a network topology.
-
After adding devices to a network topology, the devices must be _____.After adding devices to a network topology, the devices must be started in order to access the device console.
-
Consoles are accessed through _____.Consoles are accessed through terminal emulation, Telnet, or SSH connections.
-
Network topologies may be saved and opened using _____.Network topologies may be saved and opened using the GNS3 File menu.
Assessments
edit- Flashcards: Quizlet: CCENT - Lab Setup
- Quiz: Quizlet: CCENT - Lab Setup
See Also
editReferences
edit- ↑ GNS3: List of Vendor Integrations
- ↑ GNS3: Download
- ↑ GNS3: Download
- ↑ Wikipedia: pcap
- ↑ Wikipedia: pcap
- ↑ Wikipedia: Wireshark
- ↑ Wikipedia: Dynamips
- ↑ Wikipedia: QEMU
- ↑ GNS3: Qemu
- ↑ SourceForge: VPCS
- ↑ GNS3: Switching Simulation
- ↑ GNS3: Hardware Emulated by GNS3
- ↑ SourceForge: GNS3 Tutorial
- ↑ SourceForge: GNS3 Tutorial
- ↑ SourceForge: GNS3 Tutorial
- ↑ SourceForge: GNS3 Tutorial
- ↑ SourceForge: GNS3 Tutorial
- ↑ Wikipedia: Ping (networking utility)