SNMP v3 on Cisco IOS-XE: Full Monitoring Setup with LibreNMS and Grafana
Learn how to configure SNMP v3 on Cisco IOS-XE devices with real CLI examples, then feed that data into LibreNMS and Grafana for production-grade network visibility.
Tag: IOS-XE
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Cisco AAA with TACACS+ and ISE: Centralized Authentication and Authorization for IOS-XE Devices
Learn how to configure centralized AAA on Cisco IOS-XE using TACACS+ and Cisco ISE 3.3.
Cisco Catalyst 9000 IOS-XE Software Upgrade Guide: Avoiding the Gotchas
A complete, command-by-command walkthrough for upgrading Cisco Catalyst 9300/9400/9500 switches: bundle mode vs. install mode, the install add/activate/commit workflow, ISSU eligibility, common failure scenarios including rommon recovery, post-upgrade verification, and rollback procedures — all with real IOS-XE output.
BGP Communities and Route Filtering on Cisco IOS-XE: A Practical Engineer’s Guide
BGP communities let you carry policy intent alongside your routes — tag once, match everywhere. This guide covers community configuration, route filtering with prefix-lists and AS-path filters, remotely triggered blackholing (RTBH), large communities, and production best practices with real IOS-XE CLI examples.
Spanning Tree Protocol (STP) and RSTP on Cisco IOS-XE: Configuration, Troubleshooting, and Best Practices
STP and RSTP on Cisco IOS-XE explained in depth — root bridge placement, PortFast, BPDU Guard, Root Guard, Loop Guard, and a step-by-step troubleshooting workflow with real CLI command output.
AAA Authentication with TACACS+ and Cisco ISE on IOS-XE: The Complete Configuration Guide
Stop guessing who ran that change at 2am. This guide walks through configuring TACACS+ with Cisco ISE on IOS-XE — AAA method lists, command authorization, per-command accounting, and hardening steps with real CLI examples on Catalyst 9300 and ISR 4000.
IPv6 Deployment on Cisco IOS-XE: A Practical Engineer’s Guide
Most enterprise networks still run dual-stack at best in 2026. This guide covers full IPv6 deployment on Cisco IOS-XE: addressing, OSPFv3, DHCPv6, ACLs, BGP, and the verification commands that actually tell you what’s broken — with real CLI output and production gotchas.
OSPF Troubleshooting on Cisco IOS-XE: Adjacency Failures, Flapping, and Fixes
A practical guide to diagnosing and fixing the most common OSPF adjacency failures on Cisco IOS-XE — MTU mismatches, timer conflicts, authentication errors, duplicate Router IDs, and flapping neighbors — with real show command output and CLI fixes.
Cisco EEM Scripts: Automate IOS-XE with Embedded Event Manager
Cisco’s Embedded Event Manager (EEM) is one of the most underutilized features in IOS-XE. This guide covers six practical EEM applets — from BGP peer monitoring and interface flap detection to nightly config backups and CPU spike capture — with real CLI syntax and Cat9K-specific tips.
QoS on Cisco IOS/IOS-XE: A Practical Guide to Prioritizing Voice and Video Traffic
QoS misconfigurations are the number-one cause of jittery voice calls and stuttering video in enterprise networks. This guide walks through a production-ready MQC QoS policy for Cisco IOS and IOS-XE — covering DSCP markings, LLQ, CBWFQ, NBAR2 classification, and the exact show commands you need to verify it’s working.
Network Automation with Python: Netmiko, NAPALM, and Nornir — A Practical Guide
Stop logging into devices one by one. This hands-on guide covers Netmiko, NAPALM, and Nornir — the Python libraries that let network engineers automate Cisco IOS/IOS-XE tasks, parse show command output, push config changes, and run parallel jobs across hundreds of devices. Real code, real CLI examples, production-ready patterns.
Cisco IOS vs IOS-XE vs IOS-XR: What’s the Difference?
A deep dive into Cisco’s three operating systems — IOS, IOS-XE, and IOS-XR — their architectures, platforms, CLI differences, and when you’ll encounter each.