5 hands-on Cisco IOS XE scenarios you build in your own Cisco Modeling Labs instance and grade against the answer key. Focused Cisco IOS XE configuration and troubleshooting practice for CCNA and CCNP.
Enable IPv6 forwarding and configure IPv6 global unicast addresses on directly connected links only. No routing protocols or static routes. Verify that each device can reach only its directly connected neighbors using IPv6.
Build a central DHCP service on an IOS-XE router and service two branch departments across a routed hop via DHCP relay. Configure two DHCP pools (SALES and SUPPORT) with proper options and excluded ranges on the HQ server, and enable ip helper-address on both branch LAN interfaces so clients obtain leases from the correct pool. Verify leases and bindings using Linux and IOS show commands, and confirm return-path reachability with prebuilt static routes.
Build a single-scope DHCP server on an IOS-XE router and verify two Alpine Linux clients lease addresses dynamically across a pure Layer-2 switch. Configure only the canonical pool (network + default-router). Verify leases from the router and from each client.
Configure a centralized DHCP server on an IOS-XE router and relay DHCP from a remote branch LAN using ip helper-address on a branch router. Verify leases, helper configuration, and end-host reachability across a routed path.
Configure an IOS-XE router as a DHCP server delivering a complete, production-grade option set (gateway, DNS servers, domain suffix, explicit 8-hour lease) to two Alpine Linux clients over a pure L2 access switch. Validate that clients obtain dynamic addresses in-scope and that /etc/resolv.conf reflects the delivered DNS and domain options. The graded outcome is the deterministic router DHCP configuration — not the clients’ dynamic addresses.
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