DevNet Associate DEVASC 200-901 Official Certification Guide by Adrian Iliesiu (z-lib.org)

Playbook: An Ansible playbook is a file that contains an ordered set of tasks that will be run in the order in which they are de ...

any Ansible component installed on the managed servers, as the implementation is agentless. For network devices, because there i ...

$ cat hosts [iosxe] 10.10.30.171 [iosxe:vars] ansible_network_os=ios ansible_connection=network_cli The brackets are used to def ...

tasks: name: show version and ip interface brief ios_command: commands: show version show ip interface brief YAML files start ...

retries: Configures the number of retries for a command before it is considered failed. wait_for: Specifies a list of conditions ...

PLAY RECAP ************************************************************************* ***** 10.10.30.171 : ok=1 changed=0 unreach ...

referred to as the Puppet Master. By default, agents check their configuration every 30 minutes and ensure that a match exists b ...

Figure 15-4 Puppet Architecture The central control server, the Puppet Master, provides features such as reporting, web user int ...

the first step is to define—using Puppet DSL—what the desired state of the infrastructure needs to be. These definitions are cap ...

current state of the device match, no change is made. A report is sent back to the Master after the agent performs these functio ...

Figure 15-5 Chef Architecture A Chef workstation is an administrator computer used to manage the network. One or more workstatio ...

Ruby, and most of them contain simple configuration patterns that get enforced through the Chef client. Cookbooks are uploaded f ...

Infra. A large variety of nodes are supported by Chef Infra, including virtual and physical servers; cloud-based nodes running i ...

CISCO NETWORK SERVICES ORCHESTRATOR (NSO) Cisco Network Services Orchestrator (NSO) is a network services orchestration platform ...

The two primary technologies that are being used with Cisco NSO are the following: NETCONF: Used for standard and efficient auto ...

The southbound communication with the network devices is done through components called Network Element Drivers (NEDs), which im ...

used with NSO, it is recommended to use CDB as it has been optimized for NSO and the transactional nature of the solution. With ...

If applying the configuration changes fails on any of the devices in the service path, a rollback mechanism can be used to rever ...

[-a | --async ] restart [devname] | list | is-alive [devname] | status [devname] | whichdir | ncs-xml-init [devname] | ncs-xml-i ...

ios-cli-3.8 3 ios DEVICE ios0 CREATED DEVICE ios1 CREATED DEVICE ios2 CREATED After the virtual devices are created, the simulat ...