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Une mauvaise architecture
Un domaine de collision
Un domaine de sécurité
Convergence du Spanning Tree
Pas de traceroute
Pas de backup
Performance du switch central
Où est le firewall ?
Notes:
Calculate who is root bridge. You have 3 hours. Go.
Things to emphasize: Lots of redundancy here – lots of redundant links. Some lack of consistency. Yet still a terrible design.
This makes our key point: Resiliency is more than just adding redundant links. As a matter of fact, having lots of redundant links can actually hurt you, because it makes spanning tree and Dijkstra calculations more difficult – thus hurting your convergence time.
Fully-Messed environment