网络架构和网络规划.ppt

文档介绍：网络架构和网络规划
园区网络基本架构
园区网络传统的基本架构
Collision Domain 1
Collision Domain 2
Broadcast Domain
Bridges terminate collision domains
Performance Issues
Multicast, broadcast, and unknown destination events e global events
Server A
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
I need to know the MAC address for Server A
ARP
ARP
ARP
ARP
ARP
ARP
ARP
ARP
3
Broadcast Issues
Broadcasts can consume all available bandwidth
Each device must decode the broadcast frame
Server A
4
Solution: Localizing Traffic



LAN broadcasts terminate at the router interface
5
Solution: Localizing Traffic (Cont.)
VLAN3
VLAN2
VLAN1
VLANs contain broadcast traffic and separate traffic flows
6
Emerging Campus Structure
Remote Services
Enterprise Services
Local Services
Traffic patterns dictate the placement of services
80% Non- Local Traffic
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Local Services
Devices connected by switches
Traffic within the same /VLAN
Traffic does not cross the backbone
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