Software Guide
Page 20
... Used Through SNMP 26-16 SNMP Examples 26-17 Displaying SNMP Status 26-18 27 C H A P T E R Configuring Cisco IOS IP SLAs Operations 27-1 Understanding Cisco IOS IP SLAs 27-1 Using Cisco IOS IP SLAs to Measure Network Performance 27-2 IP SLAs Responder and IP SLAs Control Protocol 27-3 Response Time Computation...and Policy Maps 28-7 Policing and Marking 28-8 Policing on Physical Ports 28-9 Mapping Tables 28-11 Queueing and Scheduling Overview 28-12 Weighted Tail Drop 28-12 SRR Shaping and Sharing 28-13 Queueing and Scheduling on Ingress Queues 28-14 Queueing and Scheduling on Egress Queues 28...
... Used Through SNMP 26-16 SNMP Examples 26-17 Displaying SNMP Status 26-18 27 C H A P T E R Configuring Cisco IOS IP SLAs Operations 27-1 Understanding Cisco IOS IP SLAs 27-1 Using Cisco IOS IP SLAs to Measure Network Performance 27-2 IP SLAs Responder and IP SLAs Control Protocol 27-3 Response Time Computation...and Policy Maps 28-7 Policing and Marking 28-8 Policing on Physical Ports 28-9 Mapping Tables 28-11 Queueing and Scheduling Overview 28-12 Weighted Tail Drop 28-12 SRR Shaping and Sharing 28-13 Queueing and Scheduling on Ingress Queues 28-14 Queueing and Scheduling on Egress Queues 28...
Software Guide
Page 22
...-Set 28-62 Mapping DSCP or CoS Values to an Egress Queue and to a Threshold ID 28-65 Configuring SRR Shaped Weights on Egress Queues 28-66 Configuring SRR Shared Weights on Egress Queues 28-67 Configuring the Egress Expedite Queue 28-68 Limiting the Bandwidth on an Egress Interface 28-68...
...-Set 28-62 Mapping DSCP or CoS Values to an Egress Queue and to a Threshold ID 28-65 Configuring SRR Shaped Weights on Egress Queues 28-66 Configuring SRR Shared Weights on Egress Queues 28-67 Configuring the Egress Expedite Queue 28-68 Limiting the Bandwidth on an Egress Interface 28-68...
Software Guide
Page 41
... egress queues per -port basis for detecting the presence of mission-critical applications - Trusted boundary for protecting the performance of a Cisco IP Phone, trusting the CoS value received, and ensuring port security • Policing - SRR as the congestion-avoidance mechanism for...and for packets that exceed bandwidth utilization limits • Ingress queueing and scheduling - Aggregate policing for different traffic classifications - Weighted tail drop (WTD) as the scheduling service for specifying the rate at the network edge, allowing for differentiated service levels...
... egress queues per -port basis for detecting the presence of mission-critical applications - Trusted boundary for protecting the performance of a Cisco IP Phone, trusting the CoS value received, and ensuring port security • Policing - SRR as the congestion-avoidance mechanism for...and for packets that exceed bandwidth utilization limits • Ingress queueing and scheduling - Aggregate policing for different traffic classifications - Weighted tail drop (WTD) as the scheduling service for specifying the rate at the network edge, allowing for differentiated service levels...
Software Guide
Page 504
..." section on page 28-12. • Scheduling services the four egress queues based on their configured SRR shared or shaped weights. Basic QoS Model 28-4 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 Queueing is serviced until empty before servicing the ..."Queueing and Scheduling Overview" section on page 28-12. • Scheduling services the queues based on their configured shaped round robin (SRR) weights. Actions at the ingress port include classifying traffic, policing, marking, queueing, and scheduling: • Classifying a distinct path for its configured...
..." section on page 28-12. • Scheduling services the four egress queues based on their configured SRR shared or shaped weights. Basic QoS Model 28-4 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 Queueing is serviced until empty before servicing the ..."Queueing and Scheduling Overview" section on page 28-12. • Scheduling services the queues based on their configured shaped round robin (SRR) weights. Actions at the ingress port include classifying traffic, policing, marking, queueing, and scheduling: • Classifying a distinct path for its configured...
Software Guide
Page 512
... in Figure 28-5. If this example, CoS values 6 and 7 have a greater importance than the size of the tail-drop congestion-avoidance mechanism called weighted tail drop (WTD). Weighted Tail Drop Both the ingress and egress queues use an enhanced version of the frame), the switch drops the frame. In this frame is...
... in Figure 28-5. If this example, CoS values 6 and 7 have a greater importance than the size of the tail-drop congestion-avoidance mechanism called weighted tail drop (WTD). Weighted Tail Drop Both the ingress and egress queues use an enhanced version of the frame), the switch drops the frame. In this frame is...
Software Guide
Page 513
..., SRR sends packets to the egress port. On the egress queues, SRR sends packets to the internal ring. With sharing, the ratio of the weights controls the frequency of bursty traffic. You can expand into the unused bandwidth and share it is the default mode, and it among them . The... if the link is guaranteed at which packets are serviced by SRR, which controls the rate at this level but not limited to the configured weights. In shared mode, the queues share the bandwidth among them according to it. the absolute values are rate-limited to and Setting WTD Thresholds ...
..., SRR sends packets to the egress port. On the egress queues, SRR sends packets to the internal ring. With sharing, the ratio of the weights controls the frequency of bursty traffic. You can expand into the unused bandwidth and share it is the default mode, and it among them . The... if the link is guaranteed at which packets are serviced by SRR, which controls the rate at this level but not limited to the configured weights. In shared mode, the queues share the bandwidth among them according to it. the absolute values are rate-limited to and Setting WTD Thresholds ...
Software Guide
Page 514
... can configure the bandwidth required for proper network operation. 28-14 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 Send packet to the SRR weights. The expedite queue has guaranteed bandwidth. 1. The switch uses two nonconfigurable queues for traffic that is essential for this traffic as differentiated services (DF) expedited...
... can configure the bandwidth required for proper network operation. 28-14 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 Send packet to the SRR weights. The expedite queue has guaranteed bandwidth. 1. The switch uses two nonconfigurable queues for traffic that is essential for this traffic as differentiated services (DF) expedited...
Software Guide
Page 515
... weight1 weight2 global configuration command. Then, SRR shares the remaining bandwidth with both ingress queues and services them as specified by the weights configured with which the SRR scheduler sends packets from each packet that flows through the switch to a queue and to divide the ...threshold ID 3 is a percentage of the total number of the frequency in the mls qos srr-queue input priority-queue queue-id bandwidth weight global configuration command. Specifically, you cannot modify it. For more frequently, and by servicing the queue more information about how WTD works, ...
... weight1 weight2 global configuration command. Then, SRR shares the remaining bandwidth with both ingress queues and services them as specified by the weights configured with which the SRR scheduler sends packets from each packet that flows through the switch to a queue and to divide the ...threshold ID 3 is a percentage of the total number of the frequency in the mls qos srr-queue input priority-queue queue-id bandwidth weight global configuration command. Specifically, you cannot modify it. For more frequently, and by servicing the queue more information about how WTD works, ...
Software Guide
Page 516
... three queues. Read QoS label (DSCP or CoS value). Figure 28-8 Queueing and Scheduling Flowchart for egress ports. Service the queue according to the SRR weights. Understanding QoS Chapter 28 Configuring QoS Queueing and Scheduling on Egress Queues Figure 28-8 shows the queueing and scheduling flowchart for Egress Ports Start Receive...
... three queues. Read QoS label (DSCP or CoS value). Figure 28-8 Queueing and Scheduling Flowchart for egress ports. Service the queue according to the SRR weights. Understanding QoS Chapter 28 Configuring QoS Queueing and Scheduling on Egress Queues Figure 28-8 shows the queueing and scheduling flowchart for Egress Ports Start Receive...
Software Guide
Page 518
... queue. For an explanation of the received packet. The expedite queue is a priority queue, and it is forwarded with the SRR weight ratios control how much data can be buffered and sent before the other queues are dropped. for threshold ID 3 is preset to ...distinct drop percentages for queueing and scheduling decisions. 28-18 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 You assign shared or shaped weights to provide QoS. Each queue has three drop thresholds: two configurable (explicit) WTD thresholds and one nonconfigurable (implicit) threshold preset to ...
... queue. For an explanation of the received packet. The expedite queue is a priority queue, and it is forwarded with the SRR weight ratios control how much data can be buffered and sent before the other queues are dropped. for threshold ID 3 is preset to ...distinct drop percentages for queueing and scheduling decisions. 28-18 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 You assign shared or shaped weights to provide QoS. Each queue has three drop thresholds: two configurable (explicit) WTD thresholds and one nonconfigurable (implicit) threshold preset to ...
Software Guide
Page 520
... the ingress packet label to categorize traffic, to assign packet labels, and to -Queue Map 0, 1 2, 3, 4, 5, 6, 7 Queue Weight (Bandwidth) 81 percent 19 percent Queue (Buffer) Size 67 percent 33 percent Table 28-4 shows the generated auto-QoS configuration for the egress queues...Phone, the switch enables the trusted boundary feature. The switch uses the Cisco Discovery Protocol (CDP) to detect the presence or absence of the network that is connected to -Queue Map 1 5 2 3, 6, 7 3 2, 4 4 0, 1 Queue Weight (Bandwidth) up to100 percent 10 percent 60 percent 20 percent Queue (Buffer...
... the ingress packet label to categorize traffic, to assign packet labels, and to -Queue Map 0, 1 2, 3, 4, 5, 6, 7 Queue Weight (Bandwidth) 81 percent 19 percent Queue (Buffer) Size 67 percent 33 percent Table 28-4 shows the generated auto-QoS configuration for the egress queues...Phone, the switch enables the trusted boundary feature. The switch uses the Cisco Discovery Protocol (CDP) to detect the presence or absence of the network that is connected to -Queue Map 1 5 2 3, 6, 7 3 2, 4 4 0, 1 Queue Weight (Bandwidth) up to100 percent 10 percent 60 percent 20 percent Queue (Buffer...
Software Guide
Page 531
...39 40-47 48-63 Queue ID-Threshold ID 2-1 3-1 4-1 1-1 4-1 OL-8603-04 Catalyst 2960 Switch Software Configuration Guide 28-31 A shaped weight of the bandwidth is enabled. The port bandwidth limit is operating in shared mode. 2. One quarter of zero means that this queue is set to... 200 percent 100 percent Reserved threshold 50 percent 50 percent 50 percent Maximum threshold 400 percent 400 percent 400 percent SRR shaped weights 25 0 0 (absolute) 1 SRR shared weights 2 25 25 25 1. All ports are mapped to each queue-set when QoS is enabled. Queue 4 25 percent 100...
...39 40-47 48-63 Queue ID-Threshold ID 2-1 3-1 4-1 1-1 4-1 OL-8603-04 Catalyst 2960 Switch Software Configuration Guide 28-31 A shaped weight of the bandwidth is enabled. The port bandwidth limit is operating in shared mode. 2. One quarter of zero means that this queue is set to... 200 percent 100 percent Reserved threshold 50 percent 50 percent 50 percent Maximum threshold 400 percent 400 percent 400 percent SRR shaped weights 25 0 0 (absolute) 1 SRR shared weights 2 25 25 25 1. All ports are mapped to each queue-set when QoS is enabled. Queue 4 25 percent 100...
Software Guide
Page 560
... is allocated between the ingress queues. Then, SRR shares the remaining bandwidth with both ingress queues and services them as specified by the weights configured with a space. To return to 100. Beginning in shared mode. This procedure is the ratio of the available bandwidth is 1... srr-queue input bandwidth global configuration command. 28-60 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 Assign shared round robin weights to privileged EXEC mode. Separate each queue. To return to allocate bandwidth between the two queues). The ratio of the bandwidth ...
... is allocated between the ingress queues. Then, SRR shares the remaining bandwidth with both ingress queues and services them as specified by the weights configured with a space. To return to 100. Beginning in shared mode. This procedure is the ratio of the available bandwidth is 1... srr-queue input bandwidth global configuration command. 28-60 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 Assign shared round robin weights to privileged EXEC mode. Separate each queue. To return to allocate bandwidth between the two queues). The ratio of the bandwidth ...
Software Guide
Page 561
... Software Configuration Guide 28-61 Then, SRR shares the remaining bandwidth with both ingress queues and services them as specified by the weights configured with the mls qos srr-queue input bandwidth weight1 weight2 global configuration command. The amount of the bandwidth is allocated to ...that can degrade performance. The priority queue is guaranteed part of the internal ring. This procedure is 1 to 2. • For bandwidth weight, assign the bandwidth percentage of the bandwidth to configure the priority queue. Assign a queue as the priority queue and guarantee bandwidth on an...
... Software Configuration Guide 28-61 Then, SRR shares the remaining bandwidth with both ingress queues and services them as specified by the weights configured with the mls qos srr-queue input bandwidth weight1 weight2 global configuration command. The amount of the bandwidth is allocated to ...that can degrade performance. The priority queue is guaranteed part of the internal ring. This procedure is 1 to 2. • For bandwidth weight, assign the bandwidth percentage of the bandwidth to configure the priority queue. Assign a queue as the priority queue and guarantee bandwidth on an...
Software Guide
Page 562
...network and your QoS solution, you might need to make decisions about these guidelines when the expedite queue is disabled and the SRR shaped weights are not configured, SRR services this queue in the next sections. You will need to each queue: Switch(config)# mls qos srr...-queue input priority-queue 1 bandwidth 10 Switch(config)# mls qos srr-queue input bandwidth 4 4 Configuring Egress Queue Characteristics Depending on their SRR weights: • If the egress expedite queue is enabled, it . Configuring Standard QoS Chapter 28 Configuring QoS This example shows how to assign the ...
...network and your QoS solution, you might need to make decisions about these guidelines when the expedite queue is disabled and the SRR shaped weights are not configured, SRR services this queue in the next sections. You will need to each queue: Switch(config)# mls qos srr...-queue input priority-queue 1 bandwidth 10 Switch(config)# mls qos srr-queue input bandwidth 4 4 Configuring Egress Queue Characteristics Depending on their SRR weights: • If the egress expedite queue is enabled, it . Configuring Standard QoS Chapter 28 Configuring QoS This example shows how to assign the ...
Software Guide
Page 566
...with a space. weight2, weight3, and weight4 are set for shaping. Return to provide a smoother output over time. The ratio of the weights is optional. This procedure is the ratio of the outbound traffic, and enter interface configuration mode. Separate each queue. If you configure the lowest... number queue for both . Verify your entries. (Optional) Save your entries in shared mode. The bandwidth weight for shaped or shared weights, or both shaping and sharing, make sure that is allocated to each queue. Use shaping to smooth bursty traffic or to ...
...with a space. weight2, weight3, and weight4 are set for shaping. Return to provide a smoother output over time. The ratio of the weights is optional. This procedure is the ratio of the outbound traffic, and enter interface configuration mode. Separate each queue. If you configure the lowest... number queue for both . Verify your entries. (Optional) Save your entries in shared mode. The bandwidth weight for shaped or shared weights, or both shaping and sharing, make sure that is allocated to each queue. Use shaping to smooth bursty traffic or to ...
Software Guide
Page 567
... copy running on the four egress queues mapped to a port. For weight1 weight2 weight3 weight4, enter the weights to control the ratio of queue 3. Assign SRR weights to privileged EXEC mode. Separate each queue in privileged EXEC mode, follow these settings do not meet your ...percent, 20 percent, 30 percent, and 40 percent for queues 1, 2, 3, and 4. Chapter 28 Configuring QoS Configuring Standard QoS Configuring SRR Shared Weights on Egress Queues In shared mode, the queues share the bandwidth among them. This means that queue 4 has four times the bandwidth of queue ...
... copy running on the four egress queues mapped to a port. For weight1 weight2 weight3 weight4, enter the weights to control the ratio of queue 3. Assign SRR weights to privileged EXEC mode. Separate each queue in privileged EXEC mode, follow these settings do not meet your ...percent, 20 percent, 30 percent, and 40 percent for queues 1, 2, 3, and 4. Chapter 28 Configuring QoS Configuring Standard QoS Configuring SRR Shared Weights on Egress Queues In shared mode, the queues share the bandwidth among them. This means that queue 4 has four times the bandwidth of queue ...
Software Guide
Page 568
... configuration mode. Beginning in the egress expedite queue. Configuring Standard QoS Chapter 28 Configuring QoS Configuring the Egress Expedite Queue Beginning in Cisco IOS Release 12.1(19)EA1, Yyou can ensure that certain packets have a thorough understanding of a high-speed link, you can ...percentage of the egress queues and if these steps to enable the egress expedite queue. The egress expedite queue overrides the configured SRR weights. This means that amount. For example, if a customer pays only for most situations. You should change them in privileged EXEC...
... configuration mode. Beginning in the egress expedite queue. Configuring Standard QoS Chapter 28 Configuring QoS Configuring the Egress Expedite Queue Beginning in Cisco IOS Release 12.1(19)EA1, Yyou can ensure that certain packets have a thorough understanding of a high-speed link, you can ...percentage of the egress queues and if these steps to enable the egress expedite queue. The egress expedite queue overrides the configured SRR weights. This means that amount. For example, if a customer pays only for most situations. You should change them in privileged EXEC...
Software Guide
Page 716
... 28-69 DSCP transparency 28-38 egress queues allocating buffer space 28-62 buffer allocation scheme, described 28-17 configuring shaped weights for SRR 28-66 configuring shared weights for SRR 28-67 described 28-4 displaying the threshold map 28-65 flowchart 28-16 mapping DSCP or CoS values 28...10 implicit deny 28-7 ingress queues allocating bandwidth 28-60 allocating buffer space 28-59 buffer and bandwidth allocation, described 28-15 configuring shared weights for SRR 28-60 configuring the priority queue 28-61 described 28-4 displaying the threshold map 28-59 flowchart 28-14 mapping DSCP or CoS...
... 28-69 DSCP transparency 28-38 egress queues allocating buffer space 28-62 buffer allocation scheme, described 28-17 configuring shaped weights for SRR 28-66 configuring shared weights for SRR 28-67 described 28-4 displaying the threshold map 28-65 flowchart 28-16 mapping DSCP or CoS values 28...10 implicit deny 28-7 ingress queues allocating bandwidth 28-60 allocating buffer space 28-59 buffer and bandwidth allocation, described 28-15 configuring shared weights for SRR 28-60 configuring the priority queue 28-61 described 28-4 displaying the threshold map 28-59 flowchart 28-14 mapping DSCP or CoS...
Software Guide
Page 721
... 23-6 spanning tree and native VLANs 12-15 Spanning Tree Protocol See STP SPAN traffic 23-4 SRR configuring shaped weights on egress queues 28-66 shared weights on egress queues 28-67 shared weights on ingress queues 28-60 described 28-13 shaped mode 28-13 shared mode 28-13 support for 1-9 OL...
... 23-6 spanning tree and native VLANs 12-15 Spanning Tree Protocol See STP SPAN traffic 23-4 SRR configuring shaped weights on egress queues 28-66 shared weights on egress queues 28-67 shared weights on ingress queues 28-60 described 28-13 shaped mode 28-13 shared mode 28-13 support for 1-9 OL...