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68 — Performance statistics collection

68-2 December 2009 Alcatel-Lucent 5620 Service Aware Manager, Release 7.0 R6

Statistics Management Guide 3HE 04551 AAAE Ed. 01

68.1 Performance statistics collection overview

Performance statistics provide information about physical equipment, routing, and

other NE properties for monitoring and troubleshooting purposes. See the

appendices for a complete list of the performance statistics that are available to the

5620 SAM.

Performance statistics collection is enabled using a MIB statistics collection policy

and associating the policy with one or more NEs or specific objects within the NEs,

for example, ports. For greater efficiency and collection granularity, the following

types of MIB statistics policies are available:

• NE MIB statistics policies—define collection at the NE level

An NE MIB statistics policy contains a list of the MIB entry policies that are

invoked for all objects on the NE.

• specific MIB statistics policies—define collection at the object level

A specific MIB statistics policy contains the same list of MIB entry policies as an

NE MIB statistics policy, but the MIB entry policies are applied only to the

objects specified in the specific MIB statistics policy. A specific MIB statistics

policy uses the concept of a monitored class, which is the type of object on which

to collect statistics, for example, a port or service site. The monitored object

instances must be specified in the specific MIB statistics policy. For example, if

port is selected as the monitored object, then the actual ports in the network to

which the policy applies must be specified, and become part of the policy.

Before the 5620 SAM performs a statistics collection based on a MIB statistics

policy, it checks for duplicate collection requests, such as when the same object is

included in an NE MIB policy and a specific MIB policy. If a duplicate is found, the

5620 SAM performs the collection on the object based on the specific policy rather

than on the NE policy.

For performance reasons, Alcatel-Lucent recommends using NE MIB policies to

collect statistics from all instances of an object on an NE, and specific policies to

enable or disable collection for specific NE objects. This is a much more efficient use

of NE resources than using a specific policy in which each object instance is

specified. For example, you can configure an NE MIB policy to collect OSPF routing

statistics on all the routing instances of the NE, and use a specific MIB policy to

collect statistics on a subset of the routing instances.

Specific and NE MIB policies can operate together to streamline statistics collection.

For example, to collect network port statistics at 5-min intervals and access port

statistics at 15-min intervals, you can create an NE MIB policy for all ports with a

15-min collection interval and create a specific policy for network ports with a 5-min

collection interval. At every third interval, when the two policy activations coincide,

the NE policy is used and duplicate collection is prevented.

Specific MIB policy settings override NE MIB policy settings. Table 68-1

summarizes the specific policy overrides for an object.

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