A complete hands-on guide to configuring MPLS L3VPN on Cisco IOS-XE — from LDP label distribution and VRF definitions to BGP VPNv4 peering, PE-CE routing options, and VRF route leaking, with real CLI examples and show command output throughout.
BGP communities let you attach policy metadata to routes across your entire network. This guide covers standard, extended, and large communities on Cisco IOS-XE — with real CLI examples for tagging, filtering, RTBH blackholing, and a complete dual-homed enterprise policy configuration.
A practical engineer’s guide to deploying IPv6 on Cisco IOS-XE: configure global unicast addressing, OSPFv3 routing, dual-stack interfaces, DHCPv6, named ACLs, and NDP — with real CLI output at every step.
A complete guide to DMVPN Phase 2 on Cisco IOS-XE: configure mGRE tunnels, IKEv2 IPsec, NHRP registration, OSPF next-hop preservation, and troubleshoot the most common failure modes including NAT traversal and dual-hub redundancy.
Master Wireshark for Cisco network troubleshooting. Covers BPF capture filters vs. display filters, Embedded Packet Capture (EPC) on IOS-XE, SPAN configuration, and real-world scenarios for BGP, OSPF, STP, and security anomaly analysis with actual IOS-XE CLI commands.
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.
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.
Most network engineers harden the data plane and forget the control plane — until an SNMP flood drops their OSPF adjacencies. This guide walks through a production-ready CoPP policy for Cisco IOS-XE, with real CLI templates, tuning guidance, and the show commands you need to verify it’s working.
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.
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.
