Cisco 2521LF - 2521LF Router Manual de usuario Pagina 47

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Copyright © 1997 Cisco Systems, Inc.
6-93CSE: Networking Fundamentals WAN Basics
© 1999, Cisco Systems, Inc.
www.cisco.com
Differentiated
IP Services
Guaranteed: Latency
and Delivery
Best Effort Delivery
Guaranteed Delivery
Voice
E-mail, Web
Browsing
E-Commerce
Application
Traffic
Platinum Class
Low Latency
Step 2: Divide the Traffic into
Classes and Color It
Step 2: Divide the Traffic into
Classes and Color It
Silver
Bronze
Gold
VoiceVoice
Traffic
Classification
Traffic
Classification
6-94CSE: Networking Fundamentals WAN Basics
© 1999, Cisco Systems, Inc.
www.cisco.com
What Is Coloring?
IP Precedence & DiffServ
What Is Coloring?
IP Precedence & DiffServ
Type of Service (ToS) field
signals business QoS
policies
Differentiates network Differentiates network
services across any media services across any media
or topologyor topology
Len ID Offset TTL Proto FCS IP-SA IP-DA Data
Version
Length
ToS
1 Byte
ToS
1 Byte
IP Packet
Type of Service (ToS)
IP Precedence
IP Differentiated Service
Data, Voice, Video
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