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C
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17: Q
O
S
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RSVP
Key Guidelines for
Implementation
Consider the following guidelines when you configure QoS on your
system.
Procedural Guidelines
Configure classifiers and controls in the following order:
1
Define a classifier, or choose a predefined classifier. Identify a particular
type of traffic that you want to regulate and define a classifier for this
traffic via the Administration Console or the Web Management Traffic
Policy Wizard. The rules for defining classifiers are different for flow
versus nonflow classifiers.
2
Create a control to apply to the classifier(s) you defined. The control
enables the system to direct the traffic to one of the available transmit
queues or drop the traffic. As part of defining a control, you can:
a
Assign a rate limit to the incoming classified traffic (optionally, on a
per-port basis).
b
If you specify a rate limit, define what should be done with the
nonconforming excess (traffic that exceeds the rate-limit parameters).
c
Apply an IEEE 802.1p priority tag value to forwarded traffic.
General Guidelines
■
You must define a classifier before you can assign a control to it.
■
A classifier does not affect traffic scheduling until you configure a
control for that classifier.
■
Traffic that is not classified and controlled is treated with a transmit
priority of best (best effort) using the default classifier (499) and
control (1). In this case, all packets are conforming packets.
■
You cannot remove or modify the default classifier
(499).
■
You cannot remove the default control
(1)
, but you can modify it.
■
When you specify a TCP or UDP port range for a flow classifier, limit
the range as much as possible (for example, to a single TCP or UDP
port or a small range of ports). If the classifier applies to a wide range
of TCP or UDP ports, you increase the amount of classified traffic on
the system and consume valuable QoS resources (cache entries).
■
If you have defined a control and you want to remove or modify the
associated classifier, you must remove the control before you can
remove or modify the classifier.
Summary of Contents for CoreBuilder 3500
Page 44: ...44 CHAPTER 2 MANAGEMENT ACCESS ...
Page 58: ...58 CHAPTER 3 SYSTEM PARAMETERS ...
Page 86: ...86 CHAPTER 5 ETHERNET ...
Page 112: ...112 CHAPTER 6 FIBER DISTRIBUTED DATA INTERFACE FDDI ...
Page 208: ...208 CHAPTER 9 VIRTUAL LANS ...
Page 256: ...256 CHAPTER 10 PACKET FILTERING ...
Page 330: ...330 CHAPTER 12 VIRTUAL ROUTER REDUNDANCY PROTOCOL VRRP ...
Page 356: ...356 CHAPTER 13 IP MULTICAST ROUTING ...
Page 418: ...418 CHAPTER 14 OPEN SHORTEST PATH FIRST OSPF ...
Page 519: ...RSVP 519 Figure 94 Sample RSVP Configuration Source station End stations Routers ...
Page 566: ...566 CHAPTER 18 DEVICE MONITORING ...
Page 572: ...572 APPENDIX A TECHNICAL SUPPORT ...
Page 592: ...592 INDEX ...