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HAPTER
8: V
IRTUAL
N
ETWORKS
or removed from Virtual LANs by software without regard to their
location; there is no need to change physical connections.
The organization of the network into VLANs also reduces congestion
from broadcast frame transmissions. Broadcast frames are now sent only
to members of the same VLAN instead of to all stations on the network.
Virtual LANs also offer network security for its members. Because
transmissions do not normally cross from one VLAN to another a VLAN
will remain immune to transmission problems or congestion that may
occur in another VLAN in the network.
Since traffic is switched within virtual LANs at full rate regardless of
protocol, you can configure the LAN in a variety of ways without
inhibiting performance. This leaves your routers free to route traffic across
the virtual LAN boundaries and into the WAN.
VLAN types
According to the enabling technology, VLANs are divided into three types:
ATM-based VLANs, Tag-based VLANs and Protocol-based VLANs.
ATM-based VLANs are used in the CoreBuilder 7000 family ATM switch.
Summary of Contents for CoreBuilder 7000
Page 12: ......
Page 30: ...30 CHAPTER 1 ATM NETWORK BASICS...
Page 32: ...32 CHAPTER 1 ATM NETWORK BASICS...
Page 34: ...34 CHAPTER 1 ATM NETWORK BASICS Figure 8 LANE Network over WAN...
Page 96: ...96 CHAPTER 4 PRIVATE NETWORK TO NETWORK INTERFACE PNNI VERSION 1 0...
Page 184: ...184 CHAPTER 7 LAN EMULATION VERSIONS 1 0 AND 2 0...
Page 206: ...206 CHAPTER 9 DEVICE MANAGEMENT...
Page 222: ...222 APPENDIX A TECHNICAL SUPPORT...
Page 234: ...234 APPENDIX B PROTOCOLS AND INTERFACES...
Page 238: ...238 APPENDIX C COREBUILDER 7000 FAMILY ATM SWITCH SPECIFICATIONS...
Page 242: ...242 APPENDIX D SAFETY INFORMATION...