Cabletron Systems 802.1Q Contents, Preface, Chapter, Virtual Local Area Networks, Vlan Operation

CONTENTS

Figures			vii
Tables			viii
PREFACE
	Using This Guide		ix
	Structure of This Guide		ix
	Related Documents		x
	Document Conventions		x
CHAPTER 1		VIRTUAL LOCAL AREA NETWORKS
1.1	Defining VLANs		1-1
1.2	Types of VLANs		1-3
	1.2.1	802.1Q VLANs	1-3
	1.2.2	SecureFast VLANs	1-3
	1.2.3	Other VLAN Strategies	1-3
1.3	Benefits and Restrictions		1-4
1.4	VLAN Terms		1-4
1.5	Getting Help		1-7
CHAPTER 2		VLAN OPERATION
2.1	Description		2-1
2.2	VLAN Components		2-1
2.3	Configuration Process		2-2
	2.3.1	Defining a VLAN	2-2
	2.3.2 Classifying Frames to a VLAN		2-2
	2.3.3 Customizing the VLAN Forwarding List		2-3
2.4	VLAN Switch Operation		2-3
	2.4.1 Receiving Frames from VLAN Ports		2-4
	2.4.2	Forwarding Decisions	2-5
		2.4.2.1 Broadcasts, Multicasts, and Unknown
		Unicasts	2-5
		2.4.2.2 Known Unicasts	2-5
2.5	GARP Switch Operation		2-6

802.1Q VLAN User’s Guide iii