Cisco Cisco Prime Performance Manager 1.3 Information Guide
© 2014 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information.
Page 3 of 5
Q. What happens when a unit server fails? More specifically, how does Cisco Prime Performance Manager know
that the failure occurs and what triggers a standby unit to kick in?
A. A unit server failure is detected by the gateway through a loss of message flow between the unit server and
the gateway. When the exchange of messages, including “keepalive” messages, between the gateway and
unit server stops, the gateway will assume that the unit server failed. If redundancy is defined for the failed unit
server, the gateway will wait for the “delay” time before failing over to a redundant unit. The “delay” time is
specified using the “redundancygroups” command from the CLI.
server, the gateway will wait for the “delay” time before failing over to a redundant unit. The “delay” time is
specified using the “redundancygroups” command from the CLI.
Q. Is raw data stored locally in unit servers or replicated in the gateway?
A. Reporting data is stored locally on unit servers for the devices managed. The gateway keeps track of what
devices have been assigned to which unit server and the time frame of those assignments. When a query for
the data is performed, the gateway determines what unit server to query based on the time frame requested
and the device scope.
Q. Will data be lost when the unit server fails?
A. Data loss can occur as the new unit server starts to collect data. The unit server takes a baseline reading from
the devices before it can start generating new data. Historical data is not lost but will be unavailable until the
failed unit server reconnects to the gateway.
Q. What is responsible for generating a report, pulling data from devices, and storing data?
A. Statistics data is collected from devices and stored on the unit server. The gateway is the central point of
access for clients, so it is responsible for displaying data. When a request is made to view report data, the
gateway makes queries to the appropriate unit servers to get the data and presents the report to the client.
Q. Is it possible to deploy HA with the Cisco Prime Performance Manager gateway and unit servers colocated in
the same physical server?
A. No. Cisco Prime Performance Manager requires distributed servers for the HA deployment scenario.
Q. How can HA be installed in geographical locations using Cisco Prime Performance Manager?
A. For geographical HA, the two gateways are installed in two different geographical locations, Each gateway is
configured with unique IP addresses and works in “active-active” mode on each site at the same time. The
secondary gateway can take over immediately without administrative intervention if the primary site is not
available.
Q. Can I customize reports in Cisco Prime Performance Manager?
A. Yes. Reports are fully customizable. Please refer to the Cisco Prime Performance Manager Integration
reports.
Q. Can Cisco Prime Performance Manager collect and report on different types of services and technologies?
A. Yes. Cisco Prime Performance Manager provides more than 5300 prepackaged reports and can be easily
extended to add reports. For a complete set of reports, refer to the Cisco Prime Performance Manager
Data Sheet.
Q. Does Cisco Prime Performance Manager have options to customize report views?
A. Yes. Cisco Prime Performance Manager allows you to create custom report views.