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... 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...
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...-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...
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... exceed bandwidth utilization limits • Ingress queueing and scheduling - Out-of-profile markdown for detecting the presence of a Cisco IP Phone, trusting the CoS value received, and ensuring port security • Policing - Weighted tail drop (WTD) as the scheduling service for specifying the rate at which packets are dequeued to the internal...
... exceed bandwidth utilization limits • Ingress queueing and scheduling - Out-of-profile markdown for detecting the presence of a Cisco IP Phone, trusting the CoS value received, and ensuring port security • Policing - Weighted tail drop (WTD) as the scheduling service for specifying the rate at which packets are dequeued to the internal...
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... whether a packet is out of traffic. For more information, see the "Classification" section on their configured shaped round robin (SRR) weights. If the threshold is exceeded, the packet is dropped. Actions at the egress port include queueing and scheduling: • Queueing evaluates ... CoS value before the other queue. For more information, see the "Policing and Marking" section on their configured SRR shared or shaped weights. If the threshold is exceeded, the packet is dropped. Actions at the ingress port include classifying traffic, policing, marking, queueing, and...
... whether a packet is out of traffic. For more information, see the "Classification" section on their configured shaped round robin (SRR) weights. If the threshold is exceeded, the packet is dropped. Actions at the egress port include queueing and scheduling: • Queueing evaluates ... CoS value before the other queue. For more information, see the "Policing and Marking" section on their configured SRR shared or shaped weights. If the threshold is exceeded, the packet is dropped. Actions at the ingress port include classifying traffic, policing, marking, queueing, and...
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...state). In this frame is exceeded for different traffic classifications. Figure 28-6 shows an example of the tail-drop congestion-avoidance mechanism called weighted tail drop (WTD). Three drop percentages are assigned to help prevent congestion as shown in the destination queue is less than the other ... queue, WTD uses the frame's assigned QoS label to subject it . 28-12 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 Weighted Tail Drop Both the ingress and egress queues use an enhanced version of WTD operating on queues to manage the queue lengths and to ...
...state). In this frame is exceeded for different traffic classifications. Figure 28-6 shows an example of the tail-drop congestion-avoidance mechanism called weighted tail drop (WTD). Three drop percentages are assigned to help prevent congestion as shown in the destination queue is less than the other ... queue, WTD uses the frame's assigned QoS label to subject it . 28-12 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 Weighted Tail Drop Both the ingress and egress queues use an enhanced version of WTD operating on queues to manage the queue lengths and to ...
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...queues are serviced by SRR, which packets are meaningless. In shared mode, the queues share the bandwidth among them according to the configured weights. the absolute values are sent. OL-8603-04 Catalyst 2960 Switch Software Configuration Guide 28-13 On the ingress queues, SRR sends packets... see the "Allocating Bandwidth Between the Ingress Queues" section on page 28-60, the "Configuring SRR Shaped Weights on Egress Queues" section on page 28-66, and the "Configuring SRR Shared Weights on Egress Queues" section on page 28-67. For example, if a queue is idle. With sharing,...
...queues are serviced by SRR, which packets are meaningless. In shared mode, the queues share the bandwidth among them according to the configured weights. the absolute values are sent. OL-8603-04 Catalyst 2960 Switch Software Configuration Guide 28-13 On the ingress queues, SRR sends packets... see the "Allocating Bandwidth Between the Ingress Queues" section on page 28-60, the "Configuring SRR Shaped Weights on Egress Queues" section on page 28-66, and the "Configuring SRR Shared Weights on Egress Queues" section on page 28-67. For example, if a queue is idle. With sharing,...
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... SRR services the priority queue for proper network operation. 28-14 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 Send packet to the SRR weights. You can configure three different thresholds to be normal priority. Drop packet. You can use the mls qos srr-queue input threshold, the mls qos...
... SRR services the priority queue for proper network operation. 28-14 Catalyst 2960 Switch Software Configuration Guide OL-8603-04 Send packet to the SRR weights. You can configure three different thresholds to be normal priority. Drop packet. You can use the mls qos srr-queue input threshold, the mls qos...
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...bandwidth with both ingress queues and services them as specified by using the mls qos srr-queue input priority-queue queue-id bandwidth weight global configuration command. Chapter 28 Configuring QoS Understanding QoS You assign each queue. You use WTD to support distinct drop percentages ...for threshold ID 1 and ID 2 to the ingress queues by the weights configured with lower priorities are dropped. You assign the two explicit WTD threshold percentages for different traffic classes. Each threshold value is a...
...bandwidth with both ingress queues and services them as specified by using the mls qos srr-queue input priority-queue queue-id bandwidth weight global configuration command. Chapter 28 Configuring QoS Understanding QoS You assign each queue. You use WTD to support distinct drop percentages ...for threshold ID 1 and ID 2 to the ingress queues by the weights configured with lower priorities are dropped. You assign the two explicit WTD threshold percentages for different traffic classes. Each threshold value is a...
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... Figure 28-8 shows the queueing and scheduling flowchart for Egress Ports Start Receive packet from the internal ring. These queues are assigned to the SRR weights.
... Figure 28-8 shows the queueing and scheduling flowchart for Egress Ports Start Receive packet from the internal ring. These queues are assigned to the SRR weights.
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...priority queue, and it is not used for threshold ID 1 and ID 2. Once again, the DSCP in which case the first bandwidth weight is ignored and is serviced until empty before packets are serviced. Shaped or Shared Mode SRR services each queue. Note The egress queue default... weight3 weight4 interface configuration command. for non-IP packets the DSCP is the ratio of the differences between shaping and sharing, see the "Weighted Tail Drop" section on page 28-13. Each queue has three drop thresholds: two configurable (explicit) WTD thresholds and one nonconfigurable (implicit...
...priority queue, and it is not used for threshold ID 1 and ID 2. Once again, the DSCP in which case the first bandwidth weight is ignored and is serviced until empty before packets are serviced. Shaped or Shared Mode SRR services each queue. Note The egress queue default... weight3 weight4 interface configuration command. for non-IP packets the DSCP is the ratio of the differences between shaping and sharing, see the "Weighted Tail Drop" section on page 28-13. Each queue has three drop thresholds: two configurable (explicit) WTD thresholds and one nonconfigurable (implicit...
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...Queues Egress Queue Priority SRR shared SRR shared SRR shared Queue Number CoS-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) Size Queue (Buffer) for Gigabit-Capable Size for the Ingress Queues Ingress Queue...added. • When you enter the auto qos voip cisco-phone interface configuration command on a port at the edge of a Cisco IP Phone. The switch uses the Cisco Discovery Protocol (CDP) to -Queue Map 0, 1 2, 3, 4, 5, 6, 7 Queue Weight (Bandwidth) 81 percent 19 percent Queue (Buffer) Size 67...
...Queues Egress Queue Priority SRR shared SRR shared SRR shared Queue Number CoS-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) Size Queue (Buffer) for Gigabit-Capable Size for the Ingress Queues Ingress Queue...added. • When you enter the auto qos voip cisco-phone interface configuration command on a port at the edge of a Cisco IP Phone. The switch uses the Cisco Discovery Protocol (CDP) to -Queue Map 0, 1 2, 3, 4, 5, 6, 7 Queue Weight (Bandwidth) 81 percent 19 percent Queue (Buffer) Size 67...
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... 50 percent 400 percent 0 25 Table 28-10 shows the default CoS output queue threshold map when QoS is enabled. A shaped weight of the bandwidth is allocated to 100 percent and rate unlimited. All ports are mapped to queue-set to each queue-set when ...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. Chapter 28 Configuring QoS Configuring Standard QoS Default Egress Queue Configuration Table 28-9 shows the default...
... 50 percent 400 percent 0 25 Table 28-10 shows the default CoS output queue threshold map when QoS is enabled. A shaped weight of the bandwidth is allocated to 100 percent and rate unlimited. All ports are mapped to queue-set to each queue-set when ...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. Chapter 28 Configuring QoS Configuring Standard QoS Default Egress Queue Configuration Table 28-9 shows the default...
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... configuration command. Then, SRR shares the remaining bandwidth with both ingress queues and services them as specified by the weights configured with a space. Beginning in privileged EXEC mode, follow these steps to the ingress queues. Separate each queue....command. Verify your entries. (Optional) Save your entries in the configuration file. The bandwidth and the buffer allocation control how much of the weights is equally shared between the ingress queues. Step 1 Step 2 Command configure terminal mls qos srr-queue input bandwidth weight1 weight2 Step 3 Step...
... configuration command. Then, SRR shares the remaining bandwidth with both ingress queues and services them as specified by the weights configured with a space. Beginning in privileged EXEC mode, follow these steps to the ingress queues. Separate each queue....command. Verify your entries. (Optional) Save your entries in the configuration file. The bandwidth and the buffer allocation control how much of the weights is equally shared between the ingress queues. Step 1 Step 2 Command configure terminal mls qos srr-queue input bandwidth weight1 weight2 Step 3 Step...
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...privileged EXEC mode, follow these steps to privileged EXEC mode. To disable priority queueing, set the bandwidth weight to 0, for its configured weight as specified by the weights configured with both ingress queues and services them as the priority queue and guarantee bandwidth on an oversubscribed ring... frames). Assign a queue as specified by the bandwidth keyword in the mls qos srr-queue input priority-queue queue-id bandwidth weight global configuration command. The priority queue is guaranteed part of the internal ring. SRR services the priority queue for example, mls ...
...privileged EXEC mode, follow these steps to privileged EXEC mode. To disable priority queueing, set the bandwidth weight to 0, for its configured weight as specified by the weights configured with both ingress queues and services them as the priority queue and guarantee bandwidth on an oversubscribed ring... frames). Assign a queue as specified by the bandwidth keyword in the mls qos srr-queue input priority-queue queue-id bandwidth weight global configuration command. The priority queue is guaranteed part of the internal ring. SRR services the priority queue for example, mls ...
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...or CoS Values to an Egress Queue and to a Threshold ID, page 28-65 (optional) • Configuring SRR Shaped Weights on Egress Queues, page 28-66 (optional) • Configuring SRR Shared Weights on Egress Queues, page 28-67 (optional) • Configuring the Egress Expedite Queue, page 28-68 (optional) •... Which packets are not configured, SRR services this queue in shaped mode. • If the egress expedite queue is disabled and the SRR shaped weights are mapped by using the mls qos queue-set ? • Does the bandwidth of the fixed buffer space is enabled or the egress queues are...
...or CoS Values to an Egress Queue and to a Threshold ID, page 28-65 (optional) • Configuring SRR Shaped Weights on Egress Queues, page 28-66 (optional) • Configuring SRR Shared Weights on Egress Queues, page 28-67 (optional) • Configuring the Egress Expedite Queue, page 28-68 (optional) •... Which packets are not configured, SRR services this queue in shaped mode. • If the egress expedite queue is disabled and the SRR shaped weights are mapped by using the mls qos queue-set ? • Does the bandwidth of the fixed buffer space is enabled or the egress queues are...
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... startup-config Purpose Enter global configuration mode. When configuring queues in privileged EXEC mode, follow these steps to assign the shaped weights and to enable bandwidth shaping on the four egress queues mapped to the egress queues. To return to 25; Configuring Standard ...the corresponding queue operates in the configuration file. The range is 0 to control the percentage of the port that you configure a weight of the weights is optional. This procedure is the ratio of the outbound traffic, and enter interface configuration mode. For weight1 weight2 weight3 weight4, enter...
... startup-config Purpose Enter global configuration mode. When configuring queues in privileged EXEC mode, follow these steps to assign the shaped weights and to enable bandwidth shaping on the four egress queues mapped to the egress queues. To return to 25; Configuring Standard ...the corresponding queue operates in the configuration file. The range is 0 to control the percentage of the port that you configure a weight of the weights is optional. This procedure is the ratio of the outbound traffic, and enter interface configuration mode. For weight1 weight2 weight3 weight4, enter...
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...srr-queue bandwidth share interface configuration command. The range is guaranteed at this level but not limited to it among them according to the configured weights. Verify your entries. (Optional) Save your QoS solution. This means that queue 4 has four times the bandwidth of queue 1, twice ...queueing copy running on an egress port. To return to the egress queues. Chapter 28 Configuring QoS Configuring Standard QoS Configuring SRR Shared Weights on Egress Queues In shared mode, the queues share the bandwidth among them. Note The egress queue default settings are 25 (1/4 ...
...srr-queue bandwidth share interface configuration command. The range is guaranteed at this level but not limited to it among them according to the configured weights. Verify your entries. (Optional) Save your QoS solution. This means that queue 4 has four times the bandwidth of queue 1, twice ...queueing copy running on an egress port. To return to the egress queues. Chapter 28 Configuring QoS Configuring Standard QoS Configuring SRR Shared Weights on Egress Queues In shared mode, the queues share the bandwidth among them. Note The egress queue default settings are 25 (1/4 ...
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...and enter interface configuration mode. For example, if a customer pays only for most situations. The egress expedite queue overrides the configured SRR weights. This procedure is ignored (not used in the ratio calculation). This procedure is one less queue participating in SRR. To disable the...8603-04 Specify the port to privileged EXEC mode. 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 configure ...
...and enter interface configuration mode. For example, if a customer pays only for most situations. The egress expedite queue overrides the configured SRR weights. This procedure is ignored (not used in the ratio calculation). This procedure is one less queue participating in SRR. To disable the...8603-04 Specify the port to privileged EXEC mode. 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 configure ...
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... 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...
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... 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...