my technical experience
I was using GNS3 for quite some time but it was not very flexible if you quickly wanted to test something and even more complicated if you used a different computer or shared your projects. I spend some time with Vagrant to build a virtual Cumulus Linux lab environment which can run basically on every …
Continue reading “Cumulus Linux network simulation using Vagrant”
Here a short Ansible script to install the Cumulus NetQ agent on Cumulus Linux switches. — – hosts: spine leaf remote_user: cumulus gather_facts: no become: yes vars: ansible_become_pass: “CumulusLinux!” tasks: – name: Install cumulus-netq apt: name=cumulus-netq update_cache=yes state=present register: result – name: Restart Syslog service service: name=rsyslog state=restarted when: result.stdout is defined – pause: seconds=5 …
Continue reading “Ansible Playbook for Cumulus NetQ Agent Installation”
I had some time to play around with the new NetQ tool from Cumulus which checks your Cumulus Linux switch fabric. I did some testing with my Cumulus Layer 2 Fabric example: Ansible Playbook for Cumulus Linux (Layer 2 Fabric) You need to download the NetQ VM from Cumulus as VMware or VirtualBox template: here It …
Continue reading “Cumulus Networks NetQ telemetry-based validation system”
Just added another pair of Cumulus Linux leaf (top of rack) switches and more VMware compute nodes to our production system. We use a Layer 2 network fabric, see my recent post about an example: Ansible Playbook for Cumulus Linux (Layer 2 Fabric) Got a bit tight in the rack for the DA cables, basically each …
Like promised, here a basic Ansible Playbook for a Cumulus Linux Layer 3 Fabric running BGP which you see in large-scale data centre deployments. You push the layer 2 network as close as possible to the server and use ECMP (Equal-cost multi-path) routing to distribute your traffic via multiple uplinks. These kind of network designs …
Continue reading “Ansible Playbook for Cumulus Linux (Layer 3 Fabric)”