intermediate·20 min·Payant
The Patch Panel Labels Are Wrong
Use LLDP to find the real topology, then fix routes written from the wrong one.
Scénario
Three routers were recabled during a cupboard tidy-up and the port labels were not updated afterwards. The static routes on the middle router were written from the old labels, so each branch's traffic is being sent out of the interface facing the other one. Nothing is reachable end to end. Use the link-layer discovery protocol to find out which router is actually on each interface, then correct the routes to match.
Objectifs d'apprentissage
- lldp
- neighbour discovery
- static routing
- troubleshooting
Topologie et configuration
Cet environnement contient 3 appareils (3 Routers). Vous configurez et dépannez les compétences réseau listées ci-dessus.
Sujets du programme
Objectifs de certification
- ccna-200-301 · Objectif 2.3 : Configure and verify Layer 2 discovery protocols (CDP, LLDP)
- comptia-network-plus-n10-009 · Objectif 5.5 : Given a scenario, troubleshoot and resolve general networking issues