Configuring default ringlet selection, Configure the rpr fairness algorithm, Configuring reserved bandwidth or rate limiting – H3C Technologies H3C SR8800 User Manual
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Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter RPR logical interface
view.
interface rpr interface-number
N/A
3.
Add a static ringlet selection
entry.
rpr static-rs mac-address { ringlet0
| ringlet1 }
No static ringlet selection entry is
created by default.
NOTE:
Static ringlet selection entries take effect only when the RPR ring is closed.
Configuring default ringlet selection
To configure the default ringlet selection:
Step Command
Remarks
1.
Enter system view.
system-view N/A
2.
Enter RPR logical interface
view.
interface rpr interface-number
N/A
3.
Configure default ringlet
selection.
rpr default-rs { ringlet0 | ringlet1 }
Optional.
By default, the default ringlet is
Ringlet 0.
NOTE:
When a span is faulty and unable to forward data on the default ringlet you configured, another ringlet
works as the default ringlet.
Configure the RPR fairness algorithm
By configuring the RPR fairness algorithm, you can better guarantee the transmission quality over RPR
rings.
Configuring reserved bandwidth or rate limiting
RPR traffic fall into three classes: class A, class B, and class C, with decreasing priorities.
•
Class A is further divided into two subclasses: A0 and A1. RPR can reserve bandwidth for subclass
A0. When congestion occurs, the unused reserved bandwidth cannot be used by lower priority
traffic. Subclass A1 is rate limited. When congestion occurs, subclass A1 allows lower priority
traffic to use its unused bandwidth, and bandwidth allocation is regulated by the fairness algorithm.
•
Class B can also be divided into two subclasses: B-CIR and B-EIR. For class B traffic, the portion
within the predefined rate limit belongs to class B-CIR and the portion exceeding the limit belongs
to class B-EIR. Similar to traffic of class C, traffic of class B-EIR is regulated by the fairness algorithm.
•
Traffic of class C is regulated by the fairness algorithm and takes the lowest priority.
To configure reserved bandwidth or rate limit for a certain traffic class: