Cisco Prime Collaboration Assurance Guide, 9.5
Polling Devices
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Table Of Contents

Polling Devices

Configuring Polling Parameters for TelePresence Monitoring Settings

Configuring Polling Parameters for Voice Endpoints

Setting Polling Parameters

Viewing Polling Parameters

Editing Polling Parameters

Restoring Default Polling Parameters

View the Overriding Polling Group for a Device

Editing SNMP Timeout and Retry Values

Setting Polling Priority

Parameter Types, Device Groups, and Polling Settings

Data Settings—Polling

Voice Health Settings—Polling

Voice Utilization Settings—Polling


Polling Devices


Polling devices at regular intervals helps you detect devices and check their health. When a device is polled, Prime Collaboration receives data on many parameters. Managed network devices are polled periodically to synchronize the device data with the Prime Collaboration database.

You can poll devices to:

Check whether the devices can be reached

Configure devices

Schedule polling of devices

Display a list of devices that are not reachable for a certain period of time

You should be a Network Administrator, or a System Administrator to perform this task in Local

Authentication mode.

Configuring Polling Parameters for TelePresence Monitoring Settings

The Prime Collaboration poller manager supports the polling intervals for TelePresence Monitoring Settings tabulated in Table 7-1:

Table 7-1 Supported Polling Intervals for TelePresence Monitoring Settings

Polling Interval
Description

System Status Polling Interval

Prime Collaboration collects:

CPU and memory utilization, and peripheral status for endpoints and multipoint switches, using SNMP and HTTP (HTTPS) for Cisco C and Ex series endpoints.

CPU and memory data from call and session controllers, using Real-Time Monitoring Tool (RTMT).

Service status from call and session controllers using the RTMT; and from multipoint switches and application managers, using HTTP (HTTPS).

Call Statistics Polling Interval

Prime Collaboration collects calls statistics data, such as latency, jitter, packet loss, resolution, and so on from endpoints and conferencing devices, using SNMP and HTTP (HTTPS), respectively. This data is polled only when a session is in-progress.

Interface Statistics Polling Interval

Prime Collaboration collects data related to network device interfaces. The data includes interface status, utilization, errors, and so on. The Interface profile uses SNMP to poll devices.

This profile is used only when the troubleshooting workflow is triggered either automatically or manually.

Flow Statistics Polling Interval

Prime Collaboration collects data related to packet flow from network devices, using mediatrace and HTTP. Polling is performed only if Cisco Mediatrace is enabled on the network devices.

This profile is used only when the troubleshooting workflow is triggered either automatically or manually.

Scheduled Session Polling Interval

Prime Collaboration collects scheduled sessions data from management applications, using HTTP (HTTPS).

Session Polling Interval

Prime Collaboration collects multipoint (ad hoc and static) sessions data from conferencing devices, using HTTP (HTTPS).

Endpoint Registration Polling Interval

Prime Collaboration collects TelePresence and IP phone registration data from the call and session control devices, using HTTP (RIS is also used for Cisco Unified CM).

Ad hoc Session Polling Interval

Prime Collaboration collects point-to-point and multisite sessions data from call and session control devices. Prime Collaboration uses JTAPI for Cisco Unified CM and HTTP for Cisco VCS.


Reachability: The ICMP ping operation is performed to check whether or not managed devices are reachable. After three consecutive polling failures, an unreachability notification is generated. An unreachable alarm is triggered for this notification.

The ICMP ping operation performed during the initial discovery checks the accessibility of a device. The ICMP ping operation performed during polling checks the reachability of the managed devices. This polling is performed every 2 minutes on all managed devices except for network devices.

You must define the polling interval based on the frequency and type (ad hoc or scheduled) of the video sessions in your organization.


Note You might notice an inconsistency in the status of endpoints and IP phones on the Endpoint Monitoring page. This can happen because polling for endpoints occurs every 5 minutes (by default), and polling for call and session control devices occurs every 15 minutes (by default). After polling is complete, endpoint and IP phone status will be consistent.


The polled data is compared against predefined threshold values. If the thresholds have been exceeded, or values have fallen below acceptable levels, Prime Collaboration generates the appropriate events. For more information on threshold settings, see Configuring Thresholds.

Configuring Polling Parameters for Voice Endpoints

You can define polling values for groups. Devices can belong to system-defined or user-defined groups. Devices can belong to multiple groups, and can have specific polling settings. The group with the highest polling priority becomes the overriding group.


Note You cannot create a group in the Polling Parameters page. Groups are synchronized from Device Group. See Device Group Selector for more information.


For example, if a device belongs to both the Cisco Unified CM group and the Voice Gateway group, look at the polling group hierarchy. If the Cisco Unified CM polling group has the higher priority, the device is polled using the parameters of that polling group. See Setting Polling Priority for more information.

You will see the device group selector pane in the polling parameters page. You can select the group you want to update. For information on device group selector, see Device Group Selector.

Prime Collaboration is configured with default settings for polling parameters. You can use the defaults, edit them, or restore them at any time. Depending on how important a device group is, you can increase or decrease the polling interval to do either of the following:

Minimize the impact on the polled devices

Enhance the resolution of the collected data

You can also enhance the performance and utilization of devices by adjusting thresholds to account for the following:

Location of devices in the IP fabric

Resource constraints

For information on Threshold Settings, see Configuring Thresholds.

Setting Polling Parameters

When you change the polling parameter settings, the changes are applied for the entire group and not just the device. To open the Polling Parameters page, choose Administration > System Setup > Polling & Threshold > UC Polling Settings.

You will see the device group selector from which you can select the group you want to view or edit. For information on the device group selector, see Device Group Selector.

From the Polling Parameters page, you can perform any of the following tasks:

Viewing Polling Parameters

Editing Polling Parameters

Restoring Default Polling Parameters

Viewing Polling Parameters

When you view polling settings for a device group, you can see the devices that are members of the device group, and you can see the default and current values for the polling parameters. Devices that belong to multiple groups use the polling settings of the overriding group.

Interface and port polling is controlled at the device level; in other words, switches have a specific polling setting, and that setting determines when the switch ports are polled.

To view polling parameters:


Step 1 Choose Administration > System Setup > Polling & Threshold> UC Polling Settings.

Step 2 Select a device group for which you can set polling parameters. (Generally, this is a device group that does not contain subgroups.)

Step 3 Click View.

Step 4 When you are done viewing the polling parameters, close the window.


Editing Polling Parameters

When you edit Prime Collaboration polling parameters, you edit settings that are associated with device groups, not with individual devices. When you have finished all changes to polling parameters (and thresholds and priorities), apply all changes.

To edit polling parameters:


Step 1 Choose Administration > System Setup > Polling & Threshold > UC Polling Settings.

Step 2 Select a device group for which you can set polling parameters. (Generally, this is a device group that does not contain subgroups.)

Step 3 Click Edit.

Step 4 (Optional) To enable users to see the HighPortUtilization event, select Polling Enabled for Voice Utilization Settings.from the Parameter Type drop-down list.

Step 5 Repeat the following for each parameter that you want to edit:

a. Select a parameter type.

b. Change the parameters appropriately for each setting.

Step 6 Click Save. Your changes will not go into effect until you apply them.

Step 7 Click Apply.

Step 8 When a confirmation dialog box appears, click Yes.


Restoring Default Polling Parameters

You can restore all parameter settings for a device group to default values if you want to restore only a few functions or settings, see Parameter Types, Device Groups, and Polling Settings.

Before You Begin

View the Polling Parameter summary for the device group to see the default polling settings (shown along with the current settings) before you restore them. See Viewing Polling Parameters. Current settings along with the default settings are displayed.

To restore default polling parameters:


Step 1 Choose Administration > System Setup > Polling & Threshold > UC Polling Settings.

Step 2 Select a device group for which you can restore polling parameters. (Generally, this is a device group that does not contain subgroups.)

Step 3 Click Restore Default Settings.

Step 4 In the confirmation message box, click Yes.

The settings are stored in the database, but not yet applied to the IP fabric.


View the Overriding Polling Group for a Device

Use the Polling Parameter report or the Thresholds report to identify a device's overriding group.


Step 1 Choose Administration > System Setup > Polling & Threshold.

Step 2 Select UC Polling Settings, to view the overriding polling groups.


Note A device can have different overriding polling and threshold groups.


Step 3 Select a device group that the device is a member of and click View.

Step 4 In the report that opens, locate the device in which you are interested, and check the Overriding Group column.


Editing SNMP Timeout and Retry Values

If an SNMP query does not respond in time, Prime Collaboration times out, then retries contacting the device for as many times as you indicate. The timeout period is doubled for every subsequent retry. For example, if the timeout value is 4 seconds and the retry value is 3 seconds, Prime Collaboration waits 4 seconds before the first retry, 8 seconds before the second retry, and 16 seconds before the third retry.

The SNMP timeout and retry values are global settings.

To change the SNMP timeout and retry values:


Step 1 Choose Administration > System Setup > Polling & Threshold > UC Polling SNMP Configuration.

Step 2 Select a new SNMP timeout setting. The default is 4 seconds.

Step 3 Select a new Number of Retries setting. The default is 3 retries.

Step 4 Click Apply, and then click Yes to confirm.


Setting Polling Priority

A device group can have different overriding polling groups. You can set the priority for the device polling groups.

To find the overriding group for a device, you can select any device group to which the device belongs and view a Polling Parameters report.

To set polling priorities:


Step 1 Choose Administration > System Setup > Polling and Threshold  > UC Polling & Threshold Priority Setting.

A device can have different overriding polling and threshold groups.

Step 2 On the Setting Priorities: Queue page, select the Device Polling Groups radio button.

For threshold priority settings, see Configuring Thresholds.

Step 3 Rearrange the groups according to your preference (the closer the group is to the top of the list, the higher its priority):

a. Select a group.

b. Move the group up or down using the Up or Down buttons.

Step 4 Click Save.

Your changes will not go into effect until you apply them.

Step 5 Click Apply.



Note After you adjust polling and threshold settings, you must apply changes to have Prime Collaboration start using your changes. When you save changes, Prime Collaboration sets the polling in the selected group. When you apply changes, Prime Collaboration recalculates group membership, based on group priority and uses the new polling and threshold settings to gather information from the devices.



Tip If you are updating polling parameters in several pages, you need not apply changes every time. You can click "Apply" once, after updating all the pages.


Parameter Types, Device Groups, and Polling Settings

This section provides information on polling settings for each parameter type:

Data Settings—Polling

Voice Health Settings—Polling

Voice Utilization Settings—Polling

Data Settings—Polling

Data settings enable you to poll for device reachability, environment, ports and interfaces, and processor and memory utilization. Table 7-2 lists all data settings and polling intervals for each setting.

Table 7-2 Data Settings—Polling Settings and Default Polling Intervals

Data Polling Settings
Intervals (in seconds)
Usage Notes

Access Port Settings

30 minimum.

3600 maximum.

1200 default —You can adjust the default polling interval in 1-second increments.

To enable polling for Access Port Settings, you must enable polling for Connector Port and Interface Settings.

The same timeout and retry values are used for Access Port Settings and Connector Port and Interface Settings. When you update the timeout and retry value for either of these settings, polling updates the values for both. 1

Connector Port and Interface Settings

60 minimum.

3600 maximum.

240 default —You can adjust the default polling interval in 1-second increments.

Environment Settings

Environment Settings and Processor and Memory Utilization Settings are not available for all device groups.

Some voice-enabled device groups have similar settings available for Voice Health Settings parameter type.

Processor and Memory Utilization Settings

Reachability Settings

1 Customer Voice Portal devices have access port and connector port and interface settings disabled by default.



NotePolling for voice-enabled ports and interfaces is controlled by voice health settings.

Polling is enabled by default for user-defined groups.


Voice Health Settings—Polling

Voice health settings control polling for voice-enabled devices, device pools, ports, interfaces, and Cisco Unified Communications Applications. Data that is collected includes Cisco Unified CM cluster connectivity and processor and memory utilization on Media Convergence Servers (MCS) and on voice gateways. Voice health settings default polling intervals (in seconds) are:

Minimum:

240—For clusters in the Cisco Unified Communications Manager or Cluster device group.

30—For all other device groups.

Maximum—3600.

Default—240. You can adjust the default polling interval in 1-second increments.


Note Polling is enabled by default for user-defined groups.


Voice Utilization Settings—Polling

Voice Utilization Settings control performance polling. Performance polling collects utilization and capacity planning data from supported devices.

Performance polling is enabled by default.

When performance polling is enabled, Prime Collaboration collects performance and capacity data that:

Is accessible from monitoring dashboards in the form of performance graphs.

Is stored in data files on disk for further analysis; for information about data files.

Is measured against Voice Utilization Settings thresholds.

When thresholds are violated, Prime Collaboration generates events related to performance and capacity problems in an application, on an interface, or on a device. For example, high utilization of ports, channel, and resources of a device.

Voice Utilization Settings default polling interval values (in seconds) are:

30 minimum

3600 maximum

240 default—You can adjust the default polling interval in 1-second increments.

Table 7-3 lists the types of ports and resources that are polled on each device group.

Table 7-3 Voice Utilization Settings—Supported Ports and Resources 

Device Group
Analog Ports
Digital Ports
Other Ports
Resources

CommunicationManager Express

IP phone registered

Cisco Unified Communications Manager or Cluster

Location bandwidth

Gatekeeper

Total and Interzone bandwidth

Media Server

FXS
FXO

T1/E1 PRI,
T1 CAS BRI

Unity inbound and outbound

CommunicationManager MOH Multicast/Unicast, MTP, Transcoder, HW/SW conference

Meeting Place

Audio/Video Port

Unity Express

Session, Capacity, Orphaned mailbox

VoiceGateway

FXS
FXO E&M

T1/E1 PRIT1/E1 CASBRI

DSP

VoiceMailGateway

PBX, VM