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Lab ips-03 - Static NAT Inside/Outside
Static NAT creates a permanent one-to-one mapping between an inside private IP and an outside public IP. Used
4 min read
Labs
Hands-on Cisco IOS XE lab walkthroughs. Each lab ships with a real CML topology, configs you can paste, and verified show output. Articles tagged Labs cover the full CCNA 200-301 blueprint across Network Fundamentals, Network Access, IP Connectivity, IP Services, and Security Fundamentals.
76 posts
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Lab ips-02 - DHCP Relay (ip helper-address)
DHCP discover messages are L2 broadcasts - they do not cross routers. So when client and server are on different segments,
4 min read
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Lab ips-05 - NAT Overload (PAT)
NAT overload - usually called PAT (Port Address Translation) - shares a SINGLE outside IP across many inside hosts by tracking the
4 min read
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Lab ips-04 - Dynamic NAT with Pool
Dynamic NAT translates inside private addresses to a POOL of outside public addresses. Each inside host gets the next available
3 min read
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Lab ipc-13 - VRRP vs HSRP Comparison
VRRP (Virtual Router Redundancy Protocol, RFC 5798) is the open-standard equivalent of HSRP. Same idea: two or more routers
4 min read
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Lab ipc-12 - HSRP Active-Standby
HSRP (Hot Standby Router Protocol) is Cisco's first-hop redundancy protocol. Two routers share a virtual IP address;
4 min read