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Monitoring Quality of Service 
Quality of Services (QoS) is the technique of prioritizing traffic flows and specifying preferences for 
forwarding packets with higher priority. It prioritizes traffic flow for different applications, users, or data 
flows and ensures certain level of performance to a data flow. This service plays an important part when 
the network capacity is insufficient, especially for real time streaming multimedia applications such as 
VoIP, online games, and IP-TV. 
In Prime Network, you can view all the services configured for the selected network element in the QoS 
node under logical inventory.
The QoS Node under logical inventory is made up of two sub-nodes—the Policy Container and the Class 
of Service container. Both these sub-nodes are explained in greater detail in the following sections.
Viewing the Service Policy and Policy Group Profiles
The Policy Container node in the logical inventory lists all the available service groups and service 
policies that are associated with service templates, BBA groups, and subscriber access points.
To view the service policy and policy group profiles:
Step 1Right-click on the required device and choose the Inventory option. 
Step 2In the Inventory window, choose Logical Inventory>QoS>Policy Container. The Policies tab is 
displayed by default in content pane, which lists the existing policies are displayed as shown in 
Figure 21-1. 
						

							  
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Figure 21-1 Policy Container
Step 3
Right-click the policy and choose Properties. The Service Policy Properties window is displayed.
Table 21-1 describes the fields that are displayed in the Service Policy Properties window.
Table 21-1 Service Policy Properties
Field Name Description
Name The name of the policy.
Type The type of policy, which defaults to QoS.
Processing Strategy The strategy in applying the policy, which defaults to Match All.
Policy Rules & Actions tab
Name The name of the policy rule.
Match Condition The class of service associated to the policy. Clicking this link will take 
you to the relevant service under the Class of Service node in the logical 
inventory.
Action Execution 
StrategyThe policy execution strategy, which can be any of the following:
Execute All
Execute Until Success
Execute Until Failure
Applied Interfaces tab 
						

							  
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Step 4Close the Service Policy Properties window.
Step 5In the content pane, click the Policy Group tab. A list of existing groups are displayed.
Step 6Right-click the policy group and choose Properties. 
Table 21-2 describes the fields in the Policy Group tab. Interface Name The name of the interface on which the service policy is applied.
Entity Association The logical or physical port to which the policy is associated to. 
Clicking this link will display the relevant ethernet/gigabit ethernet port. 
Verify the Ingress Policy or Egress Policy applicable to the port.
Action Lists tab
Sequence Number The sequence number of the action list.
Action Type The action taken on the entity. For example, Activate, Deactivate, 
Authenticate and Authorize.
Affected Entity Type The entity type affected due to the selected action list. For example, 
service-policy, traffic shaping. 
Affected Entity The entity that gets affected due to the selected action.
Entity  Association The link to the entity affected due to the action. Clicking on this link will 
take you to the relevant entity. For example, if the associated entity is a 
policy, then clicking this link will take you to the relevant policy under 
the Policy Container node.
Table 21-1 Service Policy Properties (continued)
Field Name Description
Table 21-2 Policy Group Properties
Field Name Description
Name The name of the policy group.
Type The type of policy group, which can be any one of the following:
Accounting
Control
PBR
Performance Traffic
QoS
Traffic
Redirect
This field defaults to Control.
Processing Strategy The strategy in applying the policy, which defaults to Match All.
Policies
Name The name of the service policy map.
Type The type of policy map.
Processing Strategy The strategy in applying the policies on the incoming traffic. 
						

							  
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Step 7In the Policies tab, Right-click the policy from the list and choose Properties. The Service Policy 
Properties dialog box is displayed. See Table 21-1 for more details.
Figure 21-2 shows the association between the policy and interface.
Figure 21-2 Policy and Interface Association
Viewing the Class of Services Profile
To view the QoS profile:
Step 1Right-click on the device and choose the Inventory option. 
Applied Interfaces tab
Interface Name The name of the interface on which the service policy is applied.
Entity Association The logical or physical port to which the policy is associated to. 
Clicking this link will display the relevant logical or physical port. 
Verify the Ingress Policy or Egress Policy applicable to the port.
Table 21-2 Policy Group Properties (continued)
Field Name Description 
						

							  
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Step 2In the Inventory window, choose Logical Inventory>QoS>Class of Services. A list of existing 
policies are displayed in the content pane.
Step 3Right-click a service in the list and choose Properties. The Class of Services Properties dialog box is 
displayed. You can click on the tabs to view more details.
Table 21-3 describes the fields that are displayed in the Class of Services Properties dialog box.
Table 21-3 Class of Services Properties
Field Name Description
Name The name of the class of service.
Type The type of the class of service, which can be any one of the following:
Control
QoS
Traffic
This field defaults to QoS.
Matching Strategy The matching condition for the service, which can be any one of the 
following:
Match All
Match Any
Match None
This field defaults to Match All.
Match Criteria Lists
Index The sequential number for the match criterion. 
Match Type The type that is used to match lists. For example, Access Group, 
Discard-class, DSCP, MPLS, QoS-group.
Match  Condition The match condition for the class of service, which can be any one of the 
following:
available/not available
class
greater-than/not greater-than
greater-than-or-equal/not greater-than-or-equal
less-than/not less-than
less-than-or-equal/not less-than-or-equal
Match Value The value associated with the match type.
Associated Entity The entity specified in the Match Value field. Click this hyperlink to 
view the related record. 
						

							  
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Viewing Ingress and Egress Speed Details
Traffic shaping technique is used to match device and link speeds, thereby controlling packet loss, 
variable delay, and link saturation, which can cause jitter and delay. Traffic shaping must be applied to 
all outgoing traffic on a physical interface or on a VLAN. Traffic shaping is implemented when packets 
are ready to be transmitted on an interface. Traffic shaping is applied on the subinterfaces of the layer 2 
and layer 3 when QoS policy is applied.
To view the ingress and egress details when QoS policy is applied on the subinterfaces:
Step 1In the Inventory window, choose Physical Inventory.
Step 2Select an interface in layer 2 or layer 3. 
Step 3Select a subinterface for which you want to view the ingress and egress speed details. 
Step 4Click the EFP tab or Sub Interface tab to view the speed details of the subinterface mapped on layer 2 
or layer 3 respectively. Figure 21-2 shows the speed details on a subinterface.
Figure 21-3 Speed Details
The following table provides information about the fields that are not self-explanatory.
Table 21-4 describes the fields that are not self-explanatory
Table 21-4 Traffic Shaping Details
Field Name Description
Egress Policy The name of the egress policy.
Egress Speed The traffic shaping of the outgoing packets in an interface.
Ingress Policy The name of the ingress policy.
Ingress Speed The traffic shaping of the incoming packets in an interface. 
						

							  
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NoteIngress policy, egress policy, ingress speed, and egress speed are supported in Cisco ASR 9000 devices 
but ingress policy and ingress speed are not supported in Cisco ASR 903 device and egress policy and 
egress speed are not supported in Cisco ASR 901 device 
						

							  
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Managing IP Service Level Agreement (IP SLA) 
Configurations
In Prime Network, devices that are configured using Y.1731 (an ITU-T recommendation that provides 
mechanisms for service-level OAM functionality in Ethernet networks) are detected, scanned for 
configurations, and monitored. A device configured using Y.1731 has probes, which are root objects or 
containers that hold single or multiple instances of Service Level Agreement (SLA) probes configured 
by the user. To see which devices support Y.1731, refer to Cisco Prime Network 4.1 Supported VNEs.
Y.1731 Performance Management Mechanisms
The OAM functions for performance monitoring according to Y.1731 allow measurement of the 
following performance parameters. 
Frame Loss Ratio—Expressed as a percentage. This ratio is defined as the number of frames not 
delivered divided by the total number of frames during a time interval.
Frame Delay—A one-way delay for a frame, where one-way frame delay is defined as the time 
elapsed since the start of transmission of the first bit of the frame by a source node until the reception 
of the last bit of the same frame by the destination node. 
Frame Delay Variation—The measure of the variations in the frame delay between a pair of service 
frames. The service frames belong to the same CoS (Class of Service) instance on a point-to-point 
Ethernet (ETH) connection or multipoint ETH connectivity.
Throughput—The average rate of successful traffic delivery over a communication channel. 
Typically used under test conditions, such as out-of service tests, when there is no traffic for the 
tested Ethernet connection. 
The following topics provide an overview of the Y.1731 technology and describe how to view and 
monitor Y.1731 configurations in the Vision client. If you cannot perform an operation that is described 
in these topics, you may not have sufficient permissions; see Permissions Required to Perform Tasks 
Using the Prime Network Clients, page B-1.
Viewing Y.1731 Probe Properties, page 22-1
Configuring Y.1731 Probes, page 22-4
Viewing Y.1731 Probe Properties
To view Y.1731 probes and their properties for a device:
Step 1Right-click on the device and choose Inventory. 
						

							  
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Step 2In the Inventory window, choose Logical Inventory>Probes>Y1731 Probes. A list of Y.1731 probes 
is displayed in the Y.1731 Probes content pane as shown in Figure 22-1.
Figure 22-1 Y.1731 Probes Content Pane
Table 22-1 describes the fields that are displayed in the content pane.
Table 22-1 Y.1731 Content Pane
Field Name Description
Profile Name The name of the profile created for performance monitoring of the SLA 
configuration.
Source MEP The maintenance endpoint (MEP) interface ID where the probe is 
getting initiated. 
Source MAC Address The source interface MAC address where the probe is getting initiated. 
Destination The interface ID or MAC address, which will help the probe to reach its 
destination. 
OAM Domain The name of the OAM domain.
Measurement Type The type of performance operation, which could be 
cfm-delay-measurement or cfm-loopback.
Ethernet Virtual 
ConnectionThe name or identifier of the ethernet virtual connection, which 
connects two User-Network Interfaces (UNI). This is applicable only for 
the Cisco CPT devices.
Packet Size The size of the service packet. This includes padding size when 
required.