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Quick references, Setting the modem rate, Example of hierarchical scheduling – Patton electronic ONSITE 2800 User Manual

Page 98: Some explanations

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Quick references

98

OnSite 2800 Series User Manual

8 • Link scheduler configuration

Figure 19. Example of Hierarchical Scheduling

Quick references

The following sections provide a minimal “standard” link scheduler configuration for the case where a
(DSL/cable) modem link is shared for all traffic. You will also find a command cross reference list for adminis-
trators familiar with Cisco’s IOS QoS features and having to become acquainted with OnSite QoS configura-
tion.

Setting the modem rate

To match the data multiplexing of different traffic types to the capacity of the access link is the most common
application of the OnSite link scheduler.

1. Create a minimal profile.

profile service-policy modem-512
rate-limit 512 header-length 20 atm-modem
source traffic-class critical_q
priority

2. Apply the profile just created to the interface connected to the modem.

context ip
interface wan
use profile service-policy modem-512 out

Some explanations:

Low_Priority

Level_1

critical_q

VPN

Web

Mail

Default

priority

min. 30%

min. 40%

min. 30%

Define 2nd level

arbiter

Define 1st level

arbiter

Use arbiter on

an interface

Mode

WFQ

Mode

Shaper