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- MPLS (1)
- Network Automation (19)
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recent posts
- BGP Security best Practices for ISPs and Enterprise Networks
- Protecting BGP with Filtering and RPKI
- BGP Security
- Security Architecture: More Than Just Firewalls
- DMVPN Dual Hub Dual Cloud – Full Redundancy Design
- DMVPN Dual Hub Single Cloud: Hub Redundancy Without Losing Path Control
- DMVPN Single Hub Dual Cloud: Why Redundancy Does Not Always Mean Optimal Failover
- DMVPN Single Hub Single Cloud: Design Behavior Across Phase 1, 2 and 3
- L3VPN is not just about labels, MP-BGP, or VRFs
- IPv6 Prefix Delegation and SLAAC
- WFQ, CBWFQ and LLQ Explained in a Practical Way
- How Traffic is Classified, Marked, and Queued
- NAT
- Proxy ARP
- DNS and HTTP GET with IP SLA
- Cisco IRB (Integrated Routing and Bridging)
- GLBP Weighting
- DNS Server on Cisco IOS
- DHCP Proxy over PPP
- ARP authorized
- QoS in Cisco SD-WAN
- Application-based traffic steering And AAR
- Creating Extranets and Access to Shared Services
- Enforcing Security Perimeters with Service Insertion
- Cisco SD-WAN TLOC Extension
- Cisco SD-WAN Security Features
- Traffic Engineering at Sites with Multiple Routers
- Isolating Guest Users from the Corporate VPN
- Cisco SD-WAN Hub-and-Spoke Topology
- Cisco SD-WAN Onboarding
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Nornir is a Python-based automation framework designed specifically for network engineers who want more control, flexibility, and scalability in their automation workflows. Unlike traditional tools that hide logic behind rigid abstractions, Nornir acts as a lightweight orchestration layer that lets you combine Python code with popular networking libraries such as Netmiko, Scrapli, NAPALM, and pyATS.…
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Scrapli is a modern Python library for network automation that provides fast, flexible, and reliable communication with network devices. It is designed with a clean API, supports both synchronous and asynchronous workflows, and offers built-in parsing, logging, and interactive command handling. Scrapli allows us to send single commands or multiple commands to a network device…
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If you work with network devices (Cisco, Juniper, Aruba, Fortinet, etc.) and you want simple, reliable SSH automation, Netmiko is one of the best Python libraries to start with. To install it use pip install netmiko. Netmiko uses a device dictionary and ConnectHandler() to create an SSH connection. We should specify the device type in…
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Cisco Network Services Orchestrator is a Linux application which orchestrates the configuration life cycle of network devices. NSO uses software packages called Network Element Drivers (NEDs) to facilitate telnet, SSH, or API interactions with the devices that it manages. The NED provides an abstraction layer that reads in the device’s running configuration and parses it…
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In this example I want to get the configuration of the routers with rest API in host file and save the config files in a folder. this line of the code: “outfile = Path(OUT_DIR) / f”{ip}_running-config.txt”” creates the file name using the router IP. And with “outfile.write_text(r.text, encoding=”utf-8″)” we are writing the value of the…
