Design Guide

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LAN Baseline Architecture Overview—Branch Office Network
OL-11333-01
CONTENTS
LAN Services Overview 1
Branch LAN Design Considerations 2
Multilayered Branch Architecture 3
Services 4
Access Layer 5
Layer 2 versus Layer 3 at Access Layer 6
VLANs and Spanning Tree Protocol 9
Voice and Data VLANs 10
Security 11
QoS 14
Distribution Layer 15
High Availability 15
Scalability 17
Additional Services 18
Conclusion 18
References 19