Site maintenance: Ilka Miloucheva

Overview

• Scalable distributed QoS measurement and resource collection based on passive and active measurements.
• Flexible configuration of campaigns using policies to obtain different kinds of measurement and resource data of border router and inter-domain connections
• Interaction with other INTERMON tools (inter-domain route analyser and IPFIX traffic meter) to configure parameters of the campaigns.

Design and Components

• MRCollector is a network data collector performing both active (implementing a Cisco SAA probe) and passive (polling the MIB tree of managed devices) measurements.
• Two basic layers: Management and Collection layer.
• Management Layer performs message exchange with the INTERMON Tool Manager.
• Distributed Collection layer executes the campaign specifying which data should be collected (interface, QoS, SNP-MIB) based on following facilities:
• Device Interface discovery. Obtains interface name, interface type, SNMP management index, bandwidth. Supports the discovery of different vendor interfaces
• Cisco SAA probe driver implementing Cisco router Service Assurance Agent for QoS measurements collection: ICMP, UDP, JITTER and HTTP.
• Tilab SNMP-MIB poller collecting both pre-defined traffic variables for each known interface and generic user-defined MIB variables using different granularities.

Scenario

1. Device Interface Discovery. As MRCollector knows net topology (i.e. how border router are connected each other) from Inter-domain Route Analyser, it‘s supposed to retrieve information about discovered interfaces.
2. Configuration of the collection campaign. MRcollector provides to the tool manager (as Element manager or other management external system), a transparent XML interfaces that implements an easy descriptive language to configure available measures. This interfaces supports user task concurrency identified by a campaign ID.
3. Collection campaign (scenario) is executed in order to obtain data useful for QoS analysis. MRCollector starts a collection campaign (interface resource and distributed measure) based on the configuration statements previously received.