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Using Bundles to Create Logical Configurations for Physical Interfaces, CTP Release 7.3, CTPView Release 7.3
Table 4: Packet Rate for Various Packet Size and Serial Interface Rate Settings
Packet Rate (Packets per Second)
Packet Size (Bytes)
Interface Rate
(Kbps)
128
64
62.5
128
125.0
256
20.0
1024
1000.0
1544
1507.8
2048
2000.0
Related
Documentation
Providing QoS for CTP Bundles by Using Service Type Overview
Table 5: DSCP Classes and Service Type
DSCP Class
CS7
10
256
31.3
62.5
125.0
500.0
753.9
1000.0
Configuring IP Parameters for CTP Bundles (CTP Menu) on page 27
Configuring IP Parameters for CTP Bundles (CTPView) on page 25
In IP networks, the IP flow is typically classified based on the Differentiated Services
Code Point (DSCP) setting in the type of service (TOS) byte of the IP header. DSCP is a
scalable solution for classifying flows in a large IP network based on the class of service
desired on specific IP traffic flows.
With the CTP device, you can configure DSCP settings for each circuit's IP flow. For
example, some circuits could be configured for the expedited forwarding (EF) class.
When the network routers receive this EF-marked flow from the CTP device, they place
the marked traffic into a high-priority queue, enabling this traffic to be serviced before
lower priority traffic. As an EF-marked flow traverses the IP network, routers can use its
classification to provide the flow a more predictable level of performance across the
network
When you configure the service type of a bundle, you specify the ToS byte to be used in
IP headers of packets sent from the CTP device to the IP network. The ToS setting is
applied to circuits created by the bundle for which the service type is configured.
Table 5 on page 10
shows the mapping for each DSCP class and setting to the ToS setting
that you configure as the service type for a bundle. The EF class (ToS setting 184) is
commonly used for circuit traffic.
DSCP Setting
56
512
768
15.6
10.4
31.3
20.8
62.5
41.7
250.0
166.7
277.0
251.3
500.0
333.3
1024
1400
7.8
5.7
15.6
11.4
31.3
22.9
125.0
91.4
188.5
137.9
250.0
182.9
ToS Setting
224
Copyright © 2018, Juniper Networks, Inc.
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