
Chapter 73 Policy Rule
OLT2406 User’s Guide
520
This example creates a policy (
Policy1
) for the traffic flow identified via classifier
Class1
(see the classifier
example in
Class1
packets to port ge-5-4.
73.4 Two Rate Three Color Marker Traffic Policing
Traffic policing is the limiting of the input or output transmission rate of a class of traffic on the basis of
user-defined criteria. Traffic policing methods measure traffic flows against user-defined criteria and
identify it as either conforming, exceeding or violating the criteria.
Two Rate Three Color Marker (TRTCM, defined in RFC 2698) is a type of traffic policing that identifies
packets by comparing them to two user-defined rates: the Committed Information Rate (CIR) and the
Peak Information Rate (PIR). The CIR specifies the average rate at which packets are admitted to the
network. The PIR is greater than or equal to the CIR. CIR and PIR values are based on the guaranteed
and maximum bandwidth respectively as negotiated between a service provider and client.
Two Rate Three Color Marker evaluates incoming packets and marks them with one of three colors
which refer to packet loss priority levels. High packet loss priority level is referred to as red, medium is
referred to as yellow and low is referred to as green. After TRTCM is configured and DiffServ is enabled
the following actions are performed on the colored packets:
• Red (High loss priority level) packets are dropped.
• Yellow (Medium loss priority level) packets are dropped if there is congestion on the network.
• Green (Low loss priority level) packets are forwarded.
TRTCM operates in one of two modes: Color-blind or color-aware. In color-blind mode, packets are
marked based on evaluating against the PIR and CIR regardless of if they have previously been marked
or not. In the color-aware mode, packets are marked based on both existing color and evaluation
against the PIR and CIR. If the packets do not match any of colors, then the packets proceed
unchanged.
73.4.1 TRTCM - Color-blind Mode
All packets are evaluated against the PIR. If a packet exceeds the PIR it is marked red. Otherwise it is
evaluated against the CIR. If it exceeds the CIR then it is marked yellow. Finally, if it is below the CIR then
it is marked green.
OLT2406(config)# policy Policy1 classifier Class1 egress-port ge-5-4
outgoing-eport
OLT2406(config)# exit
OLT2406# show policy Policy1
Policy Policy1:
Classifiers:
Class1;
Parameters:
VLAN = 1; Priority = 0; DSCP = 0; TOS = 0;
Egress Port = ge-5-4;
Mirror Port = msc-1-1;
Bandwidth = 0; Out-of-profile DSCP = 0;
Action:
Send the packet to the egress port;
Содержание OLT2406
Страница 4: ...Document Conventions OLT2406 User s Guide 4 Desktop Laptop Switch IP Phone Smart T V...
Страница 32: ...Table of Contents OLT2406 User s Guide 32 Index 758...
Страница 33: ...33 PART I Introduction and Hardware Installation...
Страница 62: ...Chapter 3 Maintenance OLT2406 User s Guide 62 Figure 36 Slide the Power Module In and Tighten the Thumbscrews...
Страница 63: ...63 PART II Web Configurator...
Страница 118: ...Chapter 9 VLAN OLT2406 User s Guide 118 Figure 74 Advanced Application VLAN VLAN Status Static VLAN...
Страница 138: ...Chapter 14 Spanning Tree Protocol OLT2406 User s Guide 138 Figure 86 Advanced Application Spanning Tree Protocol MSTP...
Страница 161: ...Chapter 18 Link Aggregation OLT2406 User s Guide 161 Your trunk group 1 T1 configuration is now complete...
Страница 179: ...Chapter 21 Classifier OLT2406 User s Guide 179 Figure 112 Classifier Example...
Страница 182: ...Chapter 22 Policy Rule OLT2406 User s Guide 182 Figure 113 Advanced Application Policy Rule...
Страница 186: ...Chapter 22 Policy Rule OLT2406 User s Guide 186 Figure 114 Policy Example...
Страница 210: ...Chapter 25 Multicast OLT2406 User s Guide 210 Figure 126 Advanced Application Multicast Multicast Setting MVR...
Страница 248: ...Chapter 28 Loop Guard OLT2406 User s Guide 248 Figure 151 Advanced Application Loop Guard...
Страница 393: ...393 PART III CLI Commands...
Страница 581: ...Chapter 78 VoIP OLT2406 User s Guide 581...
Страница 725: ...725 PART IV Troubleshooting Specifications Appendices and Index...