intermediate·20 min·付费

Slow, Not Broken

Diagnose a link that is up, passing traffic, and unusable - then route around it.

场景

The branch office reports that the application has become painfully slow over the last week. Nothing is down, every page eventually loads, and the previous engineer confirmed the server is healthy and the link is up. Traffic currently takes the direct circuit to the data centre; a second path exists through the transit site. Find out what is wrong with the direct path and get the branch onto something usable.

学习目标

  • latency
  • packet loss
  • path selection
  • static routes
  • troubleshooting

拓扑与配置

此环境包含 5 台设备(2 Hosts, 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

  • comptia-network-plus-n10-009 · 目标 5.4:Given a scenario, troubleshoot common performance issues
  • comptia-network-plus-n10-009 · 目标 5.5:Given a scenario, troubleshoot and resolve general networking issues
subnetica© 2026 · 学习,练习,掌握。
关于我们常见问题隐私政策条款与可接受使用政策无障碍声明contact@subneti.ca
CCNA 是 Cisco Systems, Inc. 的注册商标。CompTIA Network+ 和 CompTIA Security+ 是 CompTIA, Inc. 的注册商标。Subnetica 是一个独立的学习平台,与 Cisco Systems, Inc. 或 CompTIA, Inc. 没有任何关联,也未获得其认可或赞助。