Setting The Peak Rate For Rate-Limit Profiles; Setting A One-Rate Rate-Limit Profile - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - POLICY MANAGEMENT CONFIGURATION GUIDE 2010-10-04 Configuration Manual
Software for e series broadband services routers policy management configuration guide
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Setting the Peak Rate for Rate-Limit Profiles
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Setting a One-Rate Rate-Limit Profile
Copyright © 2010, Juniper Networks, Inc.
To set the peak burst in milliseconds:
host1(config-rate-limit-profile)#peak-burst millisecond 1000
peak-burst
For two-rate rate-limit profiles only, you can use the peak-rate command to set the
peak rate in bits per second for a rate-limit profile; range is 1–4294967295. Use to set
the peak rate as a percentage value; range is 0–100. During a software upgrade, the peak
rate in a rate-limit profile is automatically set to 0 if it was nonzero but less than the
committed rate before the upgrade. The no version to restores the default value, 0.
When you specify a nonzero value for the peak rate, the peak burst size is calculated
based on a 100-ms burst as follows:
peak burst in bytes = (peak rate in bps x 100 ms) ÷ 8 bits per byte
The CLI displays peak rate in bits per second and peak burst in bytes. For example, if the
rate is 8 Mbps, the burst size is 100 ms x 8 Mbps = 800,000 bits or 100,000 bytes:
peak burst = (8,000,000 bps x 100 ms) ÷ 8 = 100,000 bytes
For this example, displaying the rate-limit profile shows:
peak-rate 8000000
peak-burst 100000
If the calculated peak burst value is less than the default peak burst size of 8 KB, the
default burst size is used. For most configurations this value is probably sufficient, making
it optional to configure the associated peak burst size.
Issue the peak-rate command in Rate Limit Profile Configuration mode to set the peak
rate:
host1(config-rate-limit-profile)#peak-rate refRlpRate percentage 100
peak-rate
You can use the rate-limit-profile one-rate command to create a rate-limit profile and
enter Rate Limit Profile Configuration mode, from which you can configure attributes for
the rate-limit profile. See Table 11 on page 83.
NOTE: The JunosE Software includes the layer 2 headers in the calculations
it uses to enforce the rates that you specify in rate-limit profiles.
Chapter 5: Creating Rate-Limit Profiles
89
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