Qos Applications; Figure 12 Qos Processing Of The Zxr10 59/52 Switches Series - Zte ZXR10 5900 Product Description

ZXR10 5900 5200 Product Description
there are enough tokens in the bucket to send packets, packets can be sent. If the
tokens cannot meet packet-sending conditions, the packets will be put into the QoS
queue for congestion management. In this way the packet traffic through the physical
interface can be controlled.
Likewise, since token bucket is used to control traffic, tokens (if there are any in the
bucket) allow burst transmission of packets. When the bucket runs out of tokens, no
packet can be sent until new tokens are generated in the bucket. This confines the
packet traffic to less than or equal to the speed of token generating, so that traffic can be
limited, and burst traffic can be allowed to pass.
Compared with traffic policing, the LR can restrict all packets passing the physical
interface. Traffic policing is flow specific and does not apply for those packets not
configured with traffic policing.
To sum up, the QoS processing of the ZXR10 59/52 switch series is shown in Figure 12:

Figure 12 QoS Processing of the ZXR10 59/52 Switches Series

3.19.3

QoS Applications

3.19.3.1 PHB Assurance of Voice and Video Service Types
Ongoing development of the network enables people to come up with non-traditional
data applications such as IP voice (VOIP) and video-conferencing. The integration of
voice, video and data networks into one network is an inevitable trend of network
development, which can lower network maintenance costs and enhance the
competitiveness of communication service providers. This requires the IP network to
guarantee voice information delay and delay jitter requirements, and to provide voice
quality comparable to Public Switched Telephone Network (PSTN).
The abundant QoS mechanism of ZXR10 59/52 switch series can fully satisfy the above
requirements of merging three networks into one. The following technologies can also be
integrated to reduce the transmission delay of voice packets:
The SP queue scheduling algorithm puts voice packets into high-priority queues,
ensuring them to be scheduled first in case of congestion. The queue scheduling mode
of SP and WRR combined can also be used, as shown in Figure 13:
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