Qos - Quality Of Service; Goals Of Qos; Qos In The Router - Siemens HiPath 3000 Series Service Documentation

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13.3

QoS - Quality of Service

Topic

Goals of QoS

QoS in the Router

13.3.1 Goals of QoS
Problems:
Consequences
Goals:
13.3.2 QoS in the Router
QoS functions control router priorities and timing.
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Router queues are optimized for routing and are not suitable for QoS monitoring of voice
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transmission
Fragmentation (if used) takes time and thereby increases the risk of packet loss
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Time-controlled hierarchical policies not available
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No feedback due to insufficient monitoring
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Architecture not suitable for specialized VoIP control functions
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A31003-H3590-S100-7-7620, 06/2012
HiPath 3000/5000 V9, Service documentation
IP does not guarantee any bandwidths
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QoS is not part of H.323
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Time problems due to large e-mail attachments and web surfing
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Network congestion due to multiple requests for the same web page
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Reduced voice quality due to
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– Delay (decline in voice quality due to delay)
– Variable delays (decline in voice quality due to jitter)
– Packet loss (decline in voice quality due to packet loss)
QoS is required in the WAN/LAN for
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– Optimum voice quality for every connection
– Fewer interruptions
HiPath 3000/5000 in the LAN Network
QoS - Quality of Service
Cross Reference
Abschnitt 13.3.1 auf
Seite 13-5
Abschnitt 13.3.2 auf
Seite 13-5
h3h5_in_the_lan.fm
13-5