Ping Labz

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

Blog

FHRP

HSRP States: The 6-State Machine with show standby Output

All 6 HSRP states (Initial, Learn, Listen, Speak, Standby, Active), what drives the election, why preempt matters, interface tracking, and real show standby output.

Jun 8, 2026 5 min read

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