I have created an IOS15 Multicast Lab in GNS3. I have used the different PIM modes to investigate and understand how they work in my lab environment. There are some best practices when using multicast in production. The lab is quite simple. We have a multicast server of 172.16.2.200 and a single multicast receiver of […]
Multicast Lab IOS15: PIM Modes Configurations Read More »
My GNS3 server is running on ESXi and was running out of space. I was not able to create new projects, add devices to existing projects and some of devices would turn off.The process to increase the disk size in ESXi is very simple, with no data loss to my projects. Increase Disk Size in
GNS3 Server ESXi Disk Resize Read More »
In version2, I have made several changes to continue with this project Added device details page for each device Refresh database button for upto date device details Refresh button for each device Notification if the last refresh of device data is greater than 200 seconds Also added is a device base template cofig generator. More
Scrapli and Flask – Part 5: Additional Device Details Read More »
The Arista vEOS switch was a little tricky to get working on GNS3. Arista do provide a vEOS for lab testing. All you need is to sign up with any email and the vEOS software for labs will be at the bottom. Registration can be found here: https://www.arista.com/en/user-registrationDownloaidn the image once registered can be found
Arista vEOS in GNS3 Read More »
Now that Scrapli is able to talk to the Cisco devices and then add that data into the database to be displayed in Flask, I have improved on the web app to allow for; Mass adding of devices by IP address Error checking each IP address and notifying the user Code for the this current
Scrapli and Flask – Part 4: Mass Adding of Devices Read More »
In my GNS3 lab for my TACACS Netmiko project I had several devices that I wanted to backup. This is a script I wrote a while ago that is a basic backup. The script may be found on my GitHub There are a number of things wrong with this script which I should address. The
Netmiko Automation Cisco Lab Backup Read More »
In my GNS3 lab for my TACACS Netmiko project I had an issue with my tacGUI boxes not retaining their DHCP addresses and not accepting a static IP address. https://www.gns3.com/community/featured/tacacs-appliance-with-gui The underlying OS on these VMs is Apline Linux 3.7. The documentation states that there are two methods for configuring the static IP based on
GNS3 tacacsGUI Assign Static IP Read More »
I have 9000v in my GNS3 lab. These devices do no like to boot up when reloaded. They sit in a boot loader menu as no autoboot is found. As it’s only a lab this is ok. Just need to direct the switch to boot the correct image, which then boots the switch perfectly fine.
GNS3 Nexus v9 Boot Problems Read More »
This is showing how TACACS in a GNS3 lab can work. It is part of the Netmiko TACACS Project. Let’s get to it… R2 will have TACACS config applied to the OLD_TACACS server. SSH login will come from the Centos Automation server R2 TACACS Config TACACS Server (OLD_TACACS) For the TACACS server I am using
Configuring TACACS Read More »
Adding an Interface in GNS3 I needed a new VM in my lab as I was having issues with my older one. There are two NICs on the VM, one for access to the internet via my home network and another NIC to connect to the actual lab. Ensure that the second NIC is configured
Linux CentOS7 Add Interface Read More »