Control - Juniper J2300 User Manual

Task
Configure a network control class
classifier.
Apply the BA classifier to an interface.
Configuring RED Drop Profiles for Assured Forwarding Congestion Control
If the Services Router must support DiffServ assured forwarding (AF), you can
control congestion by configuring random early detection (RED) drop profiles.
RED drop profiles use drop probabilities for different levels of buffer fullness to
determine which scheduling queue on the router is likely to drop DiffServ assured
forwarding (AF) packets under congested conditions. The router can drop packets
when the queue buffer becomes filled to the configured percentage.
Assured forwarding traffic with the PLP (packet loss priority) bit set is more likely
to be discarded than traffic without the PLP bit set. This example shows how to
configure a drop probability and a queue fill level for both PLP and non-PLP assured
forwarding traffic. It is only one example of how to use RED drop profiles.
The example shows how to configure the RED drop profiles listed in Table 173.
J-Web Configuration Editor
1.
Click Add new entry next to
Forwarding class.
2.
In the Class name box, type the
name of the previously configured
network control forwarding
class—nc-class.
3.
Click Add new entry next to Loss
priority.
4.
From the Loss val list, select high.
5.
In the Code point box, type
the value of the high-priority
code point for network control
traffic—for example, 110001.
6.
Click OK three times.
1.
Click Add new entry next to
Interfaces.
2.
In the Interface name box, type
the name of the interface—for
example, fe-0/0/0.
3.
In the Classifiers box, type the
name of the previously configured
BA classifier—ba-classifier.
4. Click OK.
Configuring CoS with DiffServ with a Configuration Editor
Configuring Class of Service with DiffServ
CLI Configuration Editor
Enter
set forwarding-class nc-class
loss-priority high code points 110001
Enter
set interfaces fe-0/0/0 unit 0
classifiers dscp ba-classifier
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