Cisco Prime Nerk 43 User Guide
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11-15 Cisco Prime Network 4.3.2 User Guide Chapter 11 Managing Tickets with the Vision Client Troubleshooting a Ticket The Advanced tab provides the ticket’s totals for the same information: For more information about how Prime Network processes flapping events, see How Prime Network Correlates Incoming Events, page 10-4. Viewing a Ticket’s Affected Parties Tab (Resource Pairs) The Affected Parties tab lists service resources (pairs) that are affected by an event, alarm, or ticket. This information is only populated for events that calculate impact analysis. If it is calculated for the event, the tab lists of all the endpoints that are affected in the Source area and a Destination areas. This includes business tags and IP addresses. If the NE is an IP interface, the subinterface IP address is displayed. The tab also reports affected status, which represents the degree of certainty that the pair will be impacted. Affected Status can be one of the following: Potential—The service might be affected (for example, rerouting may prevent any problem). Real—The service is affected. Recovered—The service has recovered. This state applies only to entries that were marked previously as potentially affected. It indicates only the fact that there is an alternate route to the service, regardless of the service quality level. If any entries begin with the word Misconfigured, it means the flow has stopped unexpectedly between the source and destination points. (An unexpected termination point can be a routing entity, bridge, or VC switching entity.) Because the link does not terminate as expected, the link is not actually impacted. Check the configuration and status of the affected termination points to make sure there are no errors. As time progresses and more information is accumulated from the network, Prime Network updates the information to indicate which of the potentially affected parties are real or recovered. For more information on impact analysis, including how Prime Network reports events and alarms that affect the same resource pairs, see How Prime Network Calculates and Reports Affected Parties (Impact Analysis), page 10-11. Advanced Tab Field Description Duplication Count (For flapping) Sum of the duplication counts for all events and alarms in the ticket. For example, a ticket with the following Link Down Flapping alarms on three different network elements would have a duplication count of 9: NE 1: Link down -> link up -> link down -> link up -> link down -> link up NE 2: Link down -> link up -> link down -> link up -> link down -> link up NE 3: Link down -> link up -> link down -> link up -> link down -> link up Reduction Count (For flapping) Sum of the reduction counts for all events and alarms in the ticket. Using the previous example, the ticket would have a reduction count of 18. Affected Devices Total number of devices affected by the ticket. To view the devices in a map, see the procedure in Troubleshooting a Ticket, page 11-12. Alarm Count Total number of alarms associated with the ticket (includes the root alarm)
11-16 Cisco Prime Network 4.3.2 User Guide Chapter 11 Managing Tickets with the Vision Client Troubleshooting a Ticket Viewing a Ticket’s Root Cause and Associated Events (Correlation Information) The Correlation tab displays the root cause and all of the events it caused presented in a hierarchy with the ticket’s root cause at the top. The ticket takes the name of the root cause. If you want to view the historical chronology for the events and alarms in a ticket, click the ticket’s History tab. From here you can also launch windows for individual alarms and events. Each alarm and event will have its own set of tabs: Details, History, Correlation, Affected Parties, and so forth. Figure 11-6 shows a correlation tree for a Card Down ticket. Figure 11-6 Correlation Tree for Card Out Ticket Figure 11-7 illustrates the same correlation tree. The Link Down Due to Card Out alarm is the cause of the Interface Status Down event, and the Card Out alarm is the cause of the Link Down Due to Card Out alarm. The Card Out alarm is also the root cause for all of the events; thus this is a Card Out ticket.
11-17 Cisco Prime Network 4.3.2 User Guide Chapter 11 Managing Tickets with the Vision Client Troubleshooting a Ticket Figure 11-7 Alarms and Events in the Card Out Ticket Finding Out How Many Devices Are Affected by a Ticket When a fault occurs, Prime Network automatically calculates the affected devices and embeds this information in the ticket in the Advanced tab. If you want to get a quick visual representation of the affected NEs, use the Find Affected Elements feature, which is launched from the tickets table. Right-click a ticket in the ticket pane and choose Find Affected Elements. If only one element is affected, it is highlighted in the Vision client map and navigation pane. If multiple devices are affected, they are highlighted in a list view. Viewing User-Entered Ticket Notes and Finding Out Who Changed the Ticket The Notes tab can contain any free text entered by other users. Once a user has added some notes, the notes cannot be deleted. If used correctly, it can contain helpful information that is not automatically collected by Prime Network. The User Audit tab lists any users who have acknowledged, deacknowledged, cleared the ticket, or added notes to the ticket, and when the operation was performed. This is a good way to find out who may have already worked with this ticket. Card Out Link Down Due to Card OutPort Down Due to Card Out Interface Status DownInterface Status DownInterface Status Down Port Down Due to Card OutPort Down Due to Card OutLink Down Due to Card OutCard OutCard OutCard OutCard Out Ticket Alarm 361760EventInterface Status DownInterface Status DownAll IP Interfaces DownInterface Status DownInterface Status DownInterface Status Down
11-18 Cisco Prime Network 4.3.2 User Guide Chapter 11 Managing Tickets with the Vision Client Troubleshooting a Ticket Checking the Online Documentation for Ticket Troubleshooting Information In addition to checking the Troubleshooting field in the Details tab, you may find additional information as follows:. Check the correlation examples in Event Correlation Examples, page C-1. Even if the event you are experiencing is not described, these examples can help you understand how faults are correlated. Check the event-specific reference documentation on Cisco.com: Using Built-in Troubleshooting Scripts and Tools The NE may have some built-in troubleshooting scripts that can be launched by right-clicking the NE and choosing Commands. Helpful scripts and commands may be available from that menu. These commands are documented throughout this guide under the technology or topology they apply to. For information on which devices and device software support the commands, see the Addendum: Additional VNE Support for Cisco Prime Network 4.3.2. For example, to check device reachability, you can use the NE right-click Tools menu to run a ping or Telnet. These tools contact the device from the client machine.The devices that support the following commands are listed in the Addendum: Additional VNE Support for Cisco Prime Network 4.3.2. Whether you can run these commands depends on your permissions. See Permissions for Vision Client NE-Related Operations, page B-4. If you are using Windows 7, you must enable the windows telnet client before you can use the Prime Network telnet option. The telnet communicates with the device using the telnet window from the client station. To enable the windows telnet client: Step 1From the Start menu, choose Control Panel > Turn Windows features on or off. The Turn Windows features on or off dialog box appears. Step 2Check the Telnet Client check box. Step 3Click OK. Event Types Document on Cisco.com Notifications that are generated by Prime Network; normally you will find the information you need in this document.Cisco Prime Network Supported Service Alarms Syslogs received from devices (IOS syslogs, ACE syslogs, Nexus syslogs, ASR syslogs, UCS syslogs, and so forth) and handled by Prime Network.Cisco Prime Network Supported Syslogs SNMPv1, v2, and v3 traps received from devices (ASR traps, IOS, traps, MIB 2 traps, Nexus traps, CPT traps, and so forth) and handled by Prime Network.Cisco Prime Network Supported Traps Client login and user activities related to manage the system and the environment (user accounts, device scopes, logging in and out, password issues, unit changes. Events concerning Prime Network components; for example, reachability events, database-related events, system overload prevention steps, and so forth. Cisco Prime Network Supported Security and System Events
11-19 Cisco Prime Network 4.3.2 User Guide Chapter 11 Managing Tickets with the Vision Client Troubleshooting a Ticket The devices that support the following commands are listed in the Addendum: Additional VNE Support for Cisco Prime Network 4.3.2. Whether you can run these commands depends on your permissions. See Permissions for Vision Client NE-Related Operations, page B-4. Troubleshooting Device Reachability and Performance Issues These topics provide some guidance for responding to problems with reachability and performance: Checking the Device State, page 11-19 Checking Device Memory and CPU Usage, page 11-24 Checking the Device State These topics explain how to troubleshoot reachability issues and identifying the source of a communication problem: Checking the VNE Management State Badge, page 11-19 Checking the VNE Status to See If It Is an Internal Prime Network Problem, page 11-21 Checking the Communication Between the VNE and the Device, page 11-23 Checking the VNE Management State Badge Tickets can result from device connectivity issues, or if Prime Network cannot fully discovery a device for various reasons. These kinds of problems are signaled by a badge at the bottom right of the device icon. For example, a router that is partially reachable by the Vision client is displayed as illustrated in Figure 11-8. Command Navigation Description OAM> Trace Route from DeviceNE> CommandsPerforms a traceroute to a destination address, showing how many hops were required and how long each hop takes. OAM> Ping> Destination From DevicePings a specified IP address to see if the IP address is accessible. OAM> Traceroute VRF 1 1. Not applicable for Cisco UBR10K and RFGW10 cards. Logical Inventory> VRFs> VRF> CommandsPerforms a traceroute from selected VRF to a destination address, showing how many hops were required and how long each hop takes. OAM> Ping VRF 1Pings a specified VRF to see if the VRF is accessible.
11-20 Cisco Prime Network 4.3.2 User Guide Chapter 11 Managing Tickets with the Vision Client Troubleshooting a Ticket Figure 11-8 Element with Device Partially Reachable Badge This badge represents the VNE management state. In the Prime Network model, each device is represented by one Virtual Network Element (VNE) that contains a complete model of the device. VNEs are created by system administrators using the Administration client. After a VNE is created and started, Prime Network investigates the network element and automatically builds a live model of it including its physical and logical inventory, configuration, and status. As different VNEs build their model, a complete model of the network is created. This VNE managements state badge represents: VNE communication state, which represents the status of connectivity between the device and Prime Network. VNE investigation state, which represents the extent to which the device and its components were discovered. Table 11-3 lists the VNE communication states and their icons. The table describes the default behavior. (Administrators can change the settings that determine when a device is considered partially or fully unreachable; refer to the Cisco Prime Network 4.3.2 Administrator Guide.) In most cases, rectifying these problems will require the support of your system administrator. Table 11-4 lists the VNE investigation states, which describe the degree to which Prime Network could discover and model the device. 370907 Table 11-3 VNE Communication States Badge State Name Description Device Unreachable The connection between the VNE and the device is down because all of the protocols are down (though the device might be sending traps or syslogs). Device Partially Reachable The VNE is not fully reachable because at least one protocol is not operational. VNE/Agent Unreachable The VNE is not responding to the gateway. This can happen if a Prime Network component is overutilized, connections between Prime Network components were lost, or the VNE is not responding in a timely fashion. (A VNE in this state does not mean the device is down; it might still be processing network traffic.) None Connecting The VNE is starting and the initial connection has not yet been made to the device. This is a momentary state. None Device Reachable All element protocols are enabled and connected. None Tracking Disabled The reachability detection process is not enabled for any of the protocols used by the VNE. The VNE will not perform reachability tests nor will Prime Network generate reachability-related events. (In some cases this is desirable; for example, tracking for Cloud VNEs should be disabled because Cloud VNEs represent unmanaged network segments.) None Agent Not Loaded The VNE is not responding because it was stopped, or it was just created.
11-21 Cisco Prime Network 4.3.2 User Guide Chapter 11 Managing Tickets with the Vision Client Troubleshooting a Ticket Checking the VNE Status to See If It Is an Internal Prime Network Problem To check the status of the device’s VNE, open the inventory window and click VNE Status in the properties pane. Figure 11-9 provides an example of a VNE properties window. This VNE is modeling a Cisco 3620 router. Table 11-4 VNE Investigation States Badge State Name Description Unsupported The device type is either not supported by Prime Network or is misconfigured. Partially Discovered The VNE model is inconsistent with the device because a required device command failed, even after repeated retries. A common cause of this state is that the device contains an unsupported module. Currently Unsynchronized The VNE model is inconsistent with the device; however, this is often recoverable, or may indicated a small inconsistency (such as a minor inventory component not being properly modeled). It could also be due to a more serious issue, such as an inability to reach a configured protocol on the device. Because this state can be due to a variety of reasons, check the VNE Status Details window for more information (see Checking the Communication Between the VNE and the Device, page 11-23). Discovering The VNE is building the model of the device (the device type was found and is supported by Cisco Prime Network). A VNE remains in this state until all device commands are successfully executed at least once, or until there is a discovery timeout. Maintenance VNE polling was suspended because it was manually moved to this state by an Administration client user. The VNE remains in this state until it is manually restarted. A VNE in the maintenance state has the following characteristics: Does not poll the device or process traps and syslogs. Maintains the status of any existing links. Responds to VNE reachability requests. Passively participates in correlation flow issues (but is not an initiator). The VNE is moved to the Stopped state if there are changes in other Prime Network components (for example, Prime Network is restarted). Shutting Down The VNE has been stopped or deleted by the user, and the VNE is terminating its connection to the device. None Operational The VNE has a stable model of the device. Modeling may not be fully complete, but there is enough information to monitor the device and make its data available to other applications, such as transactions (activation workflows). A VNE remains in this state unless it is stopped or moved to the maintenance state, or there are device errors. None Stopped The VNE process has terminated (it will immediately move to Defined Not Started). None Initializing The VNE is managed and support of its device type is being validated. None Defined Not Started A new VNE was created (and is starting); or an existing VNE was stopped. A VNE remains in this state until it is started (or restarted).
11-22 Cisco Prime Network 4.3.2 User Guide Chapter 11 Managing Tickets with the Vision Client Troubleshooting a Ticket NoteVNE status is not the same as device status. A device may be fully reachable and operating even though a VNE status is Down, Unreachable, or Disconnected. If the VNE status is down, the device may still be fully operational. This indicates a problem in Prime Network, not the device. Figure 11-9 VNE Properties Window
11-23 Cisco Prime Network 4.3.2 User Guide Chapter 11 Managing Tickets with the Vision Client Troubleshooting a Ticket Checking the Communication Between the VNE and the Device To check the status of the communication between the device and the VNE that is modeling it, open the inventory window and click VNE Details in the properties pane. Figure 11-10 provides an example of a VNE Status Details window. Figure 11-10 VNE Status Details Window The VNE Status Details window provides this information about the VNE: Its management connectivity state, which has to do with how the VNE was configured The protocols the VNE is using to communicate with the device and the status of each Whether the device is generating syslogs or traps In the Management State area, if the Reduced Polling field is true, this means updates are driven by incoming events. If the Investigation State is Currently Unsynchronized, perform a manual device poll by clicking Poll Now in the inventory window. For more information on this topic, see the Cisco Prime Network 4.3.2 Administrator Guide.
11-24 Cisco Prime Network 4.3.2 User Guide Chapter 11 Managing Tickets with the Vision Client Troubleshooting a Ticket Using Ping, Telnet, and Trace Route To check device reachability, you can use the NE right-click Tools menu to run a ping or Telnet. These tools contact the device from the client machine. The devices that support these commands are listed in the Addendum: Additional VNE Support for Cisco Prime Network 4.3.2. Whether you can run these commands depends on your permissions. See Permissions for Vision Client NE-Related Operations, page B-4. NoteIf you are using Windows 7, you must enable the windows telnet client before you can use the Prime Network telnet option. See Using Built-in Troubleshooting Scripts and Tools, page 11-18. Checking Device Memory and CPU Usage The Vision client provides a tool that displays memory and CPU usage information for a device or network element, including its history. To open the CPU usage graph: Step 1Right-click a network element in the navigation tree and choose Tools > CPU Usage. The CPU Usage dialog box displays the following information: CPU Usage—The CPU usage rate as a percentage. CPU Usage History—The CPU usage rate history is graphically displayed. Memory Usage—The memory usage rate as a percentage. Memory Usage History—The memory usage rate history is graphically displayed. Step 2If desired, click Save to CSV File to export the displayed data. Step 3Click the upper right corner to close the CPU Usage dialog box. Prime Network also provides a web-based Monitoring tool for administrators that tracks how the gateway, units, and individual AVMs are operating—Java heap, dropped messages, CPU usage, and so forth. This information is provided in graphical form and you can use it to locate and diagnose problems. This tool is described in the Cisco Prime Network 4.3.2 Administrator Guide. Command Navigation Description OAM> Trace Route from DeviceNE> CommandsPerforms a traceroute to a destination address, showing how many hops were required and how long each hop takes. OAM> Ping> Destination From DevicePings a specified IP address to see if the IP address is accessible. OAM> Traceroute VRF 1 1. Not applicable for Cisco UBR10K and RFGW10 cards. Logical Inventory> VRFs> VRF> CommandsPerforms a traceroute from selected VRF to a destination address, showing how many hops were required and how long each hop takes. OAM> Ping VRF 1Pings a specified VRF to see if the VRF is accessible.