Background: Python-Requests wants to verify https-certificates, which makes sense to me. – but my VCenter uses a self-signed Certificate Don’t think about ignoring certificate errors đ Prerequisites Download the certificate from the VCenter: Install the certificate: Now Python.requests validates the vCenter: Add the Export to ~/.bashrc at the end of the fileRead More →
…this article should have been published at 2017-11-23, i forgot to press the right botton. So, an update might be needed, anyone still interested in cot today? Release 2.1 (2018-01-29) is the current release, containing some fixes (https://github.com/glennmatthews/cot/blob/master/CHANGELOG.rst) COT installation using PIP So, let’s go, following thats embarassing. Install PIP first Try it again Optional: Argument-Completion Not essential, but handy. COT helpers A full installation requires so called „cot-helpers“ to use all features. first fix „fatdisk“ which is used to inject configs into OVA-Files uncomment to and run the helper-installation again: But it threw a lot of warnings.. warning: format â%luâ expects argument of typeRead More →
In real life an hardware-ISR/ASR-Router might be the correct choice. Create a CSR1000v-Instance with nested Virtualization support But since the CSR1000v-Router supports Service-Containers, too – this is the chance to prove the setup in a lab environment: IOS-XE 3.17 is the first supported release, i’ll go with IOS-XE 16.7.1 Option to enable unsigned containers any 3rd party KVM Libvirt based format / YAML manifest file Requires 4GB+ dedicated RAM ASR1000, ISR4000, CSR1000 5 Minutes to deploy the virtual CSR1000v-Router using COT I’ll use COT (Common OVF Tool (COT) â Automated Lab-Router Deployment) to deploy my CSR1000v-Router: Boot the Router Check the Virtualization-Environment: fail đ MachineRead More →
Routers with more than three interfaces? Not that uncommon! It might be handy, if several devices are needed with more than three interfaces, to: not: deploy the devices with three interfaces first add the needed number of interfaces to the routers attache tne new interfaces to the correct vSphere-Portgroup but instead: create an OVA-Template with the correct number of interfaces (one time) deploy the routers and attach them during deployment to their portgroup So using vNIC Hot-Add might be not the favourite way to work. Common OVF Tool COT lets you to deploy Cisco CSR1000v routers by easy to use (linux-)commands. (Common OVF Tool (COT)Read More →
Is this SDN (Software defined Networking)? I think so! I really love to provision new Cisco CSR1000v lab-routers without the need to do everything manually in the graphical user interface. It’s possible to provision production-routers, too, of course: Just add your license-information to leave the 100Kbps-limit behind (which is no handicap for normal lab-usage). The Common OVF Tool (COT) (Documentation) enables me to do this by injecting an initial startup-configuration into the cisco-provided OVA-file before deploying it to an ESXi-host. Interactive Cisco CLI-Commands possible And, even better, the Cisco CSR1000V allows interactive CLI-commands within the injected configuration: building new bootflash-directories, creating a SSH-key. Injecting theRead More →
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