Ping Labz

CCNP-level networking tutorials - OSPF, STP, 802.1X, and BGP explained with real lab configs and topology diagrams.

Blog

Wireless

Cisco Wireless LAN Controller: What It Does and How It Works

What a Cisco WLC does: split-MAC architecture, CAPWAP tunnels, the AP join process, AireOS vs Catalyst 9800, the profile-and-tag config model, and FlexConnect.

Jun 5, 2026 4 min read

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Labs

CCNA 200-301 Mega Lab: The All-in-One Hands-On Campus

One 10-node CML topology that exercises the entire CCNA 200-301 hands-on blueprint: VLANs, STP, EtherChannel, HSRP, OSPF, NAT, DHCP, NTP and the security baseline, with real Cisco IOS XE captures.

Jun 5, 2026 15 min read

VLAN

VLAN vs VXLAN: The L2 Overlay, Demystified

VLAN vs VXLAN explained: a VLAN tags L2 segments, VXLAN encapsulates them across L3. The 4,094 limit, VTEPs, BGP EVPN, and when you actually need VXLAN.

Jun 3, 2026 4 min read