![[Day #27 Pyats Series] Syslog server configuration validation using pyATS for Cisco [Python for Network Engineer]](https://networkjourney.com/wp-content/uploads/2025/08/Syslog-server-configuration-validation-using-pyATS-for-Cisco.png)
Introduction on the Key Points Welcome to Day #27 of the “101 Days of pyATS (Vendor-Agnostic)” series! Today, we tackle a crucial and often overlooked part of network observability—Syslog server configuration validation. When managing modern enterprise networks, ensuring that devices are correctly logging events to […]
![[Day #28 Pyats Series] SNMP configuration consistency check using pyATS for Cisco [Python for Network Engineer]](https://networkjourney.com/wp-content/uploads/2025/08/SNMP-configuration-consistency-check-using-pyATS-for-Cisco.png)
Introduction on the Key Points In today’s highly automated, security-conscious network environments, SNMP (Simple Network Management Protocol) remains one of the foundational protocols for network monitoring, alerting, and asset tracking. While SNMP enables centralized visibility across infrastructure, a misconfigured SNMP setting can lead to failed […]
![Ticket#9 - WAN Flap Detection: DMVPN Phase 2 Tunnel Up/Down Issue Fixed [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-Ticket-9.jpg)
Problem Summary The enterprise monitoring tool detected flapping tunnels between remote branch routers and the HQ hub.Ticket Priority: HighIssue: DMVPN Phase 2 Tunnel intermittently goes UP/DOWN, causing loss of reachability to HQ and apps like VoIP. Symptoms Observed Symptom Description Tunnel state flapping Tunnel interface […]
![Mastering IPv6 Routing: A Complete Guide with Labs, CLI & FAQs [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-IPv6-routing.jpg)
If you’re reading this, you’re either deep into the world of IPv6 already or you’re preparing to face it soon. IPv6 is no longer just a future plan—it’s the reality of today’s networks, especially with the exhaustion of IPv4. If you’ve ever wondered “How does […]
![Your First Step into IPv6: Address Types, Labs, CLI & Real-World Use Cases [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-IPV6.jpg)
When I started teaching networking years ago, IPv4 was king. Subnetting was everyone’s nightmare (and still is ). But over time, I noticed a shift. Devices kept growing, IP conflicts became more common, and NAT started showing its limits. That’s when IPv6 really started to […]
![DIA vs Centralized Breakout: Which Internet Access Model Is Right for Your SD-WAN Network in 2025?. [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/DIA-vs-Centralized-Breakout-Which-Internet-Access-Model-Is-Right-for-Your-SD-WAN-Network-in-2025_networkjourney.png)
If you’re currently designing or managing SD-WAN solutions, you’re probably facing one of the most critical architectural questions: Should you go with DIA (Direct Internet Access) or a Centralized Breakout model? Choosing the right internet access model can significantly impact your application performance, security posture, […]
![IP SLA Configuration for Failover: Step-by-Step Guide with EVE-NG Lab & CLI [2025]. [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/IP-SLA-Configuration-for-Failover_networkjourney.png)
Today I want to take you into one of the most practical tools you can add to your network reliability toolkit: IP SLA with tracking for failover. Back when I was setting up redundant internet links for my enterprise clients, we needed a way to […]
![SD-WAN Transport Color Explained: Master Cisco SD-WAN Colors, Use Cases & CLI [2025 Guide]. [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/SD-WAN-Transport-Color-Explained_-Master-Cisco-SD-WAN-Colors_-Use-Cases_CLI_networkjourney-1.png)
Over the past few years, I’ve helped many enterprises migrate to Cisco SD-WA, and a recurring point of confusion has been around Transport Colors. If you’ve ever looked at a vEdge or cEdge configuration and wondered what “mpls”, “biz-internet” or “public-internet” actually mean—this blog is […]
![SD-WAN vs Traditional WAN: Complete Comparison, CLI Lab & Real Use Cases [2025 Guide]. [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/SD-WAN-vs-Traditional-WAN_-Complete-Comparison_networkjourney.png)
Should you stay with Traditional WAN or move to SD-WAN? I’ve helped several clients in the past five years migrate their branch networks and data centers to Cisco SD-WAN, and I’ve seen both the technical challenges and amazing benefits it brings. If you’re still depending […]
![OSPF LSA Types Explained: Complete Guide with CLI, EVE-NG Lab & Real-World Use Cases. [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/OSPF-LSA-Types-Explained_Complete-Guide-with-CLI-EVE-NG-Lab-Real-World-Use-Cases_networkjourney.png)
Today we’re going to tackle one of the most crucial yet often misunderstood parts of OSPF—LSA Types. When I train CCNA and CCNP candidates, many get confused with when and where to use Type 1 vs Type 3 or what the heck Type 7 LSAs […]
