intermediate·20 min·付费
The Patch Panel Labels Are Wrong
Use LLDP to find the real topology, then fix routes written from the wrong one.
场景
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.
学习目标
- lldp
- neighbour discovery
- static routing
- troubleshooting
拓扑与配置
此环境包含 3 台设备（3 Routers）。你将配置并排查上方列出的网络技能。
课程主题
认证考纲目标
- ccna-200-301 · 目标 2.3：Configure and verify Layer 2 discovery protocols (CDP, LLDP)
- comptia-network-plus-n10-009 · 目标 5.5：Given a scenario, troubleshoot and resolve general networking issues