![]() Whatever you do, you'll need a virtualization environment, and images for network device virtual machines. You could decide to run the whole setup on your laptop (in which case you might be limited by the amount of RAM you can squeeze into it - many networking devices are resource hogs), buy a dedicated server to run the virtual lab on ( Intel NUC seems to be an interesting option), or even run the whole thing in the cloud. You can build your virtual networking lab in a number of ways. Still keen on building your own virtual lab? Keep reading. ![]() When working with physical devices you might want to use out-of-band management network for SSH access in case you badly mess up device configurations. The only requirement when building non-local lab (be it using physical gear or hosted virtual lab) is to have SSH access from your host (and VMs running within it) to the networking devices. You could build a physical or a virtual networking lab, or use a third-part virtual lab like Network To Code labs. Save the edited file and any new node created from that template will be created with the configured IDLE PC value.Articles » Building a Network Automation Lab » Networking Lab Once inside the template, locate the idle PC variable and set it to the determined value: ![]() If you are editing a different template they are all found within that directory. For this template I will be using the command “vi /opt/unetlab/html/templates/ intel OR amd/c7200. Go ahead and close the session running the IOS node in CLI. Now go back to the SSH session running “top” and see how the CPU is doing:Īs can be seen, a single IOS instance is only taking 1% CPU instead of 25% which is much better! Then start the IOS session over but appended with “–idle-pc=” and the value selected. The highest count is usually the best value to use, so quit out of the IOS session with “Ctrl+]” and then”q”. To do this, navigate back to the SSH session running the IOS emulation and use the keyboard combination “Ctrl+]” and then hit “i”: To fix this issue, we need to have Dynamips (the software that emulates the Cisco IOS) calculate a better IDLE PC value compared to the default. Once the IOS device completes booting (after exiting the initial configuration dialog) navigate back to the first SSH session with top running and observe the CPU load:Īs will be noticed, the CPU is running pretty high for a single IOS device running. Now run the IOS from the second CLI, for this tutorial I will be issuing the IDLE PC for a C7200 node: Open a second SSH session to the EVE-NG CLI, while leaving the first SSH session open. This post is going to be a quick guide on configuring the default IDLE PC settings for EVE-NG.įirst ssh to the EVE-NG CLI and issue the “top” command: Doing extensive Google searching only resulted in a single document on the “old” way of configuring the default IDLE PC and a bunch of hits for GNS3 configuration. For example, configuring the default IDLE PC for a Cisco IOS node in GNS3 is very straightforward. A draw back I’ve run into with EVE-NG is its lack of quick and easy customization. One thing I really like about EVE-NG is the ability to use a web client instead of needing a thick client like you do for GNS3 and VIRL. As I continue on my quest for the perfect lab I have been messing around with EVE-NG (a competitor to GNS3 and VIRL).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |