Flexi Network

Flexi Network Gateway Release 2.1

DPI Reporter

Interface DescriptionDN0976226 Issue 2-3

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2 Interface DescriptionDN0976226 Issue 2-3

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The information in this document is subject to change without notice and describes only the product defined in the introduction of this documentation. This documentation is intended for the use of Nokia Siemens Networks customers only for the purposes of the agreement under which the document is submitted, and no part of it may be used, reproduced, modified or transmitted in any form or means without the prior written permission of Nokia Siemens Networks. The documentation has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia Siemens Networks welcomes customer comments as part of the process of continuous development and improvement of the documentation.

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Copyright Nokia Siemens Networks 2013/11/5. All rights reserved

f Important Notice on Product SafetyThis product may present safety risks due to laser, electricity, heat, and other sources of danger.

Only trained and qualified personnel may install, operate, maintain or otherwise handle this product and only after having carefully read the safety information applicable to this product.

The safety information is provided in the Safety Information section in the Legal, Safety and Environmental Information part of this document or documentation set.

The same text in German:

f Wichtiger Hinweis zur Produktsicherheit Von diesem Produkt knnen Gefahren durch Laser, Elektrizitt, Hitzeentwicklung oder andere Gefahrenquellen ausgehen.

Installation, Betrieb, Wartung und sonstige Handhabung des Produktes darf nur durch geschultes und qualifiziertes Personal unter Beachtung der anwendbaren Sicherheits-anforderungen erfolgen.

Die Sicherheitsanforderungen finden Sie unter Sicherheitshinweise im Teil Legal, Safety and Environmental Information dieses Dokuments oder dieses Dokumentations-satzes.


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Table of ContentsThis document has 26 pages.

1 Summary of changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.1 Changes between release 2.0 and release 2.1 . . . . . . . . . . . . . . . . . . . . 71.2 Changes between release 10 CD8 and release 2.0 . . . . . . . . . . . . . . . . 71.3 Changes between release 10 CD5.1 and release 10 CD8 . . . . . . . . . . . 71.4 Changes between release 10 CD5 and release 10 CD5.1 . . . . . . . . . . . 7

2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92.1 Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92.2 Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4 DPI reports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.1 Pushing user-specific reports to SAI . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.2 Pushing domain reports to SAI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134.3 Pushing POP3 server reports to SAI . . . . . . . . . . . . . . . . . . . . . . . . . . . 154.4 Pushing email transactions reports to SAI . . . . . . . . . . . . . . . . . . . . . . . 174.5 Pushing VoIP reports to SAI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6 Error cases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7 Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

8 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

9 Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26


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List of FiguresFigure 1 DPI reporting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10


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List of TablesTable 1 DPI Reporter Interface Description glossary . . . . . . . . . . . . . . . . . . . . . 26


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DPI Reporter Summary of changes

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1 Summary of changesChanges between document issues are cumulative. Therefore, the latest document issue contains all changes made to previous issues.

1.1 Changes between release 2.0 and release 2.1Changes between issues 2-2 and 2-3Chapter Restrictions: editorial corrections.

1.2 Changes between release 10 CD8 and release 2.0Changes between issues 2-1 and 2-2Chapter Pushing VoIP reports to SAI: updated note on reported call duration.

Chapter Restrictions: added note on reported call duration limitations.

Changes between issues 1-4 and 2-1Throughout the guide: Added information on the new DPI Trendica Reporting license.

Chapter Pushing VoIP reports to SAI: new chapter added on VoIP reporting type.

Chapter Restrictions:

changed the restrictions of domain reports to a maximum of 30 000 domains and 12 000 users

added a note on nodes

1.3 Changes between release 10 CD5.1 and release 10 CD8Changes between issues 1-3 and 1-4Chapter Pushing POP3 server reports to SAI: new chapter added on POP3 server reporting type.

Chapter Pushing email transactions reports to SAI: new chapter added on email trans-actions reporting type.

Chapter Pushing domain reports to SAI: updated with the new IMSI reporting type..

Chapter Pushing user-specific reports to SAI: updated the list of the reported parame-ters with Bearer ID, in order to support reporting for secondary PDP contexts / dedicated bearers.

Flexi NG10 GGSN L7/L7+ Analysis license/feature has been renamed to Flexi NG Deep Packet Inspection.

1.4 Changes between release 10 CD5 and release 10 CD5.1Changes between issues 1-2 and 1-3Chapter Pushing user-specific reports to SAI: added Timestamp parameter description.

Chapters Overview and Pushing domain reports to SAI: updated to indicate the need for external interfaces from the service aware blade.


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Summary of changes

Changes between issues 1-1 and 1-2Content and structure updates throughout the guide concerning the new domain report-ing type.


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DPI Reporter Introduction

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2 IntroductionThis document provides information on the Deep Packet Inspection (DPI) Reporter interface between Nokia Siemens Networks Flexi Network Gateway (Flexi NG) and Serve At once Intelligence (SAI).

2.1 ScopeThis document contains an overview of the DPI Reporter interface and the interfaces role in the network architecture.

2.2 AudienceThis document is aimed at operators and administrators working with the DPI Reporter interface of Flexi NG. The reader should be familiar with packet data transfer, 3G net-works, Evolved Packet System (EPS) and HTTP and SIP protocols and terminology.


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Overview

3 OverviewSAI is a centralized service management business intelligence product which provides insight into customer experience and helps organizations to make business decisions and improve customer satisfaction.

The Flexi NG DPI reporting solution periodically sends Comma Separated Value (CSV) files containing DPI data, from Flexi NG to SAI (TRENDICA), using FTP protocol. DPI interface is the name of the interface that is used to connect Flexi NG Service Blades (SBs) or Service Aware Blades (SABs) to the DPI reporter server.

DPI reports (towards Trendica) contain sensitive user information and hence, the DPI reporting solution is controlled by a license, namely DPI Trendica Reporting. For detailed information on privacy issues, see Flexi NG Security Hardening.

Figure 1 DPI reporting

Flexi NG reports the following types of information:

user specific protocol statistics domain hits and unique hits (per reporting period) unique domains per IMSI POP3 server communicated (per reporting period) email transactions (per reporting period) VoIP related reports (per reporting period)


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DPI Reporter DPI reports

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4 DPI reports

4.1 Pushing user-specific reports to SAIA reporter process runs on every AS node of Flexi NG and has its own recovery group name: Reporter.The reporter process creates user-specific reports that contain the data volume, packets, protocol ID and IP version of protocol that the subscribers have used within the reporting period.

These reports will be stored in a local ramdisk directory, accumulated and written in a CSV file, with the help of configurable timers. CSV files are transferred from SB to SAI, which acts as an FTP server.

The operator needs to include a specific PCC rule in the session profile of each user to enable this type of reporting for the specific users. This PCC rule will have a parameter configured that enables this type of reporting during the activation of the user session.

g Before configuring the PCC rule check licenses, see Flexi NG User Guide.The CSV text files have the following format (the maximum permissible number of char-acters for each parameter is shown in brackets):

Timestamp (10 integer, indicates the PDP context creation time in seconds (after 01/01/1970) in UNIX time stamp format)

Bearer ID (10 hexadecimal) IMSI (16 integer) IMEISV (16 integer) MSISDN (18 integer) User IP version 4 (8 hexadecimal) User IPversion 6 (32 hexadecimal) 10 x subscriber used Protocols with the following

parameters: Protocol Name (20) UL bytes (64bit integer) DL bytes (64bit integer) UL packets (64bit integer) DL packets (64bit integer) IP version of Protocol (4)

The naming of the report file includes the following info:

ng-reporting-id, report type, node-id, and timestamp (CSV creation time).

Example:massggsnsc_dUserSpAppUsgStat_AS7-0_1288713565.datAfter generating the reports, Flexi NG reads the configurable FTP server address, des-tination directory, user account and password and initiates the file transfer. The file is transferred from the Flexi NG AS node to SAI, which serves as a configurable FTP server. The CSV file is sent until SAI receives it successfully. If SAI is not available, then Flexi NG stores the CSV file until connection is re-established. During this period if DPI


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DPI reports

reporting feature is disabled or subscriber application report type is disabled then the CSV file will not be sent.

g If there is no DPI data found by the reporter process during a period, then an empty CSV file is being sent to SAI through FTP to indicate the above.Flexi NG stops sending the CSV file in the following cases:

When Flexi NG Deep Packet Inspection license is OFF or Flexi NG Deep Packet Inspection feature is disabled.

When the DPI Trendica Reporting license is OFF or the dpi-reporting feature is dis-abled.

When subscriber application report type is disabled (corresponding CSV file not sent).

When the subscriber application report interval is set to 0. When Traffica reporting feature is enabled (in this case reports will be sent towards

Traffica interface).

When a CSV file reaches to SAI successfully, then Flexi NG removes this CSV file and keeps sending a *.ctr file until SAI receives it successfully. The *.ctr file is an empty file and has the same file name as the CSV report file (excluding the *.dat extension). The only use of the CTR file is to designate that the FTP file transfer was completed suc-cessfully.


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4.2 Pushing domain reports to SAIA reporter process runs on every SAB node of Flexi NG and has its own recovery group name: ReporterSab.The reporter process creates two reports, domain and IMSI reports. Domain reports contain the domain, the domain hits and the unique hits per domain that the subscribers have accessed within the reporting period. IMSI reports contain the IMSI of each user directly related to the unique domains they have accessed within the reporting period. The correlation between IMSIs and unique domains is per-formed with the use of indexes that represent respective lines in the produced domain reports (index value range: 0..29 999).These reports will be stored in a local ramdisk directory, accumulated and written in CSV files, with the help of configurable timers. CSV files are transferred from SAB to SAI, which acts as an FTP server.

g Flexi NG SAB also supports external connectivity for the Dr interface (DPI reporting) with the same routing feature set as the SB. For more information, see Flexi NG Site Con-nectivity Guidelines and Commissioning and Integrating Flexi NG.


g Before configuring the PCC rule check licenses, see Flexi NG User Guide.The domain report CSV text files have the following format (in brackets, the maximum permissible number of characters for each parameter is shown):

Domain Name (50) Hits (32bit integer) Unique Hits,per reporting period (32bit integer)



Example:massggsnsc_cDomHTTPStats_SAB2-0_1288713565.datThe IMSI report CSV text files have the following format (the maximum permissible number of characters for each parameter is shown in brackets):

IMSI (16 integer) 50 x Domain Indexes

Domain Index (6 integer)The naming of the report file includes the following info:

FNG-ID, report type, node-id and timestamp.

Example:massggsnsc_cSubDomHTTPstats_SAB2-0_1288713565.datAfter generating the reports, Flexi NG reads the configurable FTP server address, des-tination directory, user account, and password and initiates the file transfer. The file is transferred from the Flexi NG AS node to SAI, which serves as a configurable FTP server. The CSV file is sent until SAI receives it successfully. If SAI is not available, then


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Flexi NG stores the CSV file until connection is re-established. During this period if DPI reporting feature is disabled or domain report type is disabled then the CSV file will not be sent.




When domain report type is disabled (corresponding CSV files not sent). When the domain report interval is set to 0.When a CSV file reaches to SAI successfully, then Flexi NG removes this CSV file and keeps sending a *.ctr file until SAI receives it successfully. The *.ctr file is an empty file and has the same file name as the CSV report file (excluding the *.dat extension). The only use of the CTR file is to designate that the FTP file transfer was completed suc-cessfully.


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4.3 Pushing POP3 server reports to SAIA reporter process runs on every SAB node of Flexi NG and has its own recovery group name: ReporterSab. The reporter process creates POP3 server reports that contain the POP3 Log-in server name along with the volume of transaction used for each POP3 server within the reporting period.

These reports will be stored in a local ramdisk directory, accumulated and written in CSV files, with the help of configurable timers. CSV files are transferred from SAB to SAI, which acts as an FTP server.



g Before configuring the PCC rule check licenses, see Flexi NG User Guide.The POP3 server report CSV text files have the following format (the maximum permis-sible number of characters for each parameter is shown in brackets):

Log in Server Name (50) Volume Counter (64bit integer, the volume of traffic from/to

the POP3 server excluding the teardown packets of the user sessions)



Example:massggsnsc_POP3ServReport_SAB2-0_1288713565.dat

After generating the reports, Flexi NG reads the configurable FTP server address, des-tination directory, user account and password and initiates the file transfer. The file is transferred from the Flexi NG AS node to SAI, which serves as a configurable FTP server. The CSV file is sent until SAI receives it successfully. If SAI is not available, then Flexi NG stores the CSV file until connection is re-established. During this period if DPI reporting feature is disabled or POP3 server report type is disabled then the CSV file will not be sent.




When POP3 server report type is disabled (corresponding CSV file not sent).


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When the POP3 server report interval is set to 0.When a CSV file reaches to SAI successfully, then Flexi NG removes this CSV file and keeps sending a *.ctr file until SAI receives it successfully. The *.ctr file is an empty file and has the same file name as the CSV report file (excluding the *.dat extension). The only use of the CTR file is to designate that the FTP file transfer was completed suc-cessfully.


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4.4 Pushing email transactions reports to SAIA reporter process runs on every SAB node of Flexi NG and has its own recovery group name: ReporterSab. The reporter process creates top email senders/receivers reports that contain the time of transaction, the email protocol, email volume, sender email address and receiver email address within the reporting period.




g Before configuring the PCC rule check licenses, see Flexi NG User Guide.The top email senders/receivers report CSV text files have the following format (the maximum permissible number of characters for each parameter is shown in brackets):

Time of transaction (10 integer) Email Protocol (5) Email Volume (32bit, integer) Sender and receivers email addresses (maximum 250 characters

for the sum of addresses)



Example:massggsnsc_EmailTransReport_SAB2-0_1288713565.dat

After generating the reports, Flexi NG reads the configurable FTP server address, des-tination directory, user account, and password and initiates the file transfer. The file is transferred from the Flexi NG AS node to SAI, which serves as a configurable FTP server. The CSV file is sent until SAI receives it successfully. If SAI is not available, then Flexi NG stores the CSV file until connection is re-established. During this period if DPI reporting feature is disabled or email transactions report type is disabled then the CSV file will not be sent.





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When email transactions report type is disabled (corresponding CSV file not sent). When the email transactions report interval is set to 0.When a CSV file reaches to SAI successfully, then Flexi NG removes this CSV file and keeps sending a *.ctr file until SAI receives it successfully. The *.ctr file is an empty file and has the same file name as the CSV report file (excluding the *.dat extension). The only use of the CTR file is to designate that the FTP file transfer was completed suc-cessfully.


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4.5 Pushing VoIP reports to SAIA reporter process runs on every SAB node of Flexi NG and has its own recovery group name: ReporterSab. The reporter process creates two reports, VoIP and SIP server reports. VoIP reports contain the call activation time, the subscribers IMSI, the VoIP protocol and the VoIP call duration within the reporting period. SIP server reports contain the SIP domain server and the volume within the reporting period.




g Before configuring the PCC rule check licenses, see Flexi NG User Guide.The VoIP report CSV text files have the following format (in brackets, the maximum per-missible number of characters for each parameter is shown):

Call Activation Time (10) IMSI (16 integer) VoIP Protocol (4) VoIP Call Duration (10)



Example:massggsnsc_VoIPCallReport_SAB2-0_1288713565.datThe SIP server report CSV text files have the following format (the maximum permissible number of characters for each parameter is shown in brackets):

SIP domain server (50) Volume (both UL and DL) (64bit integer, the volume of

traffic from/to the SIP domain)The naming of the report file includes the following info:


Example:massggsnsc_SIPReport_SAB2-0_1288713565.dat

After generating the reports, Flexi NG reads the configurable FTP server address, des-tination directory, user account and password and initiates the file transfer. The file is transferred from the Flexi NG AS node to SAI, which serves as a configurable FTP server. The CSV file is sent until SAI receives it successfully. If SAI is not available, then Flexi NG stores the CSV file until connection is re-established. During this period if DPI


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reporting feature is disabled or VoIP report type is disabled then the CSV file will not be sent.

g If there is no DPI data found by the reporter process during a period, then an empty CSV file is being sent to SAI through FTP to indicate the above.g VoIP calls that have been established prior to the enabling of the VoIP report type, will not appear in the relevant CSV file (on-the-fly activation of the report type).

Flexi NG stops sending the CSV file in the following cases:



When VoIP and SIP report types is disabled (corresponding CSV files not sent). When the voip report interval is set to 0.When a CSV file reaches to SAI successfully, then Flexi NG removes this CSV file and keeps sending a *.ctr file until SAI receives it successfully. The *.ctr file is an empty file and has the same file name as the CSV report file (excluding the *.dat extension). The only use of the CTR file is to designate that the FTP file transfer was completed suc-cessfully.


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DPI Reporter Alarms

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5 AlarmsThe following alarms are related to the DPI Reporter interface:

71516 DATABASE IS FULL 71503 CONNECTION LOST TO PEER NETWORK ELEMENT (automatically

cleared when the feature is disabled) 71508 CONFIGURATION OUT OF SYNC (automatically cleared after successful

reading of its configuration) 71506 INSUFFICIENT CONFIGURATION 71502 CANNOT INITIALISE APPLICATION PROCESSFor detailed information on alarms, see Flexi NG Alarms.


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Error cases

6 Error casesThe cases below cover the possible reasons for DPI report generation failure:

expired or non-existent license Flexi NG Deep Packet Inspection license DPI Trendica Reporting license

incorrect FTP configuration the DPI reporting feature is disabled the Deep Packet Inspection feature is disabled For user-specific reports:

the subscriber-application-report type is disabled the subscriber-application-report-interval is set to 0

For domain reports: the domain-report type is disabled the domain-report-interval is set to 0

For POP3 server reports: the pop3-serv-report type is disabled the pop3-server-report-interval is set to 0

For email transactions reports: the email-transactions-report type is disabled the email-transactions-report-interval is set to 0

For VoIP reports: the voip-report type is disabled the voip-report-interval is set to 0

For detailed information on error cases, see Troubleshooting Flexi NG.


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DPI Reporter Restrictions

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7 RestrictionsThese are the restrictions (per node) in the current release.

g Service blades / service aware blades host two nodes that work independently of each other. For detailed information on nodes, see chapter Nodes in Flexi NG User Guide.Subscriber application report type related:

There is a maximum limit of the first 30 000 entries representing PDP contexts with active data flows within the reporting interval.

Only 10 protocols for each entry can be reported in each CSV file during the report-ing period (CSV files only include the first 10 protocols, the rest are ignored).

Only identified protocols will be reported in each CSV file during the reporting period. The maximum permissible value for an FTP user account or FTP password is 16

characters.

Domain report type related:

There is a maximum limit of the first 30 000 entries representing HTTP domains within the reporting interval.

Only the first 12 000 users can be tracked for unique hits during the reporting period.

Only 50 unique domains can be accounted per user during the reporting period. The reported domain name can be 50 characters maximum (in case of domain

names that exceed this limit, only the first 50 characters will be included). The maximum permissible value for an FTP user account or FTP password is 16

characters. IMSI report type specific:

Only the first 12 000 users can be tracked for IMSI reports during the reporting period.

Only 50 unique domains can be accounted per IMSI during the reporting period.POP3 server report type related:

The maximum amount of characters for each Log-in server can be 50 characters. Only the first 5 000 POP3 server can be accounted during the reporting period.Email transactions report type related:

The maximum recorded and transmitted email transactions entries can be the first 10 000.

For each entry the report can contain the sender/receivers email addresses (maximum 250 characters for the sum of addresses), along with the time of the transaction, the size of the email and the email protocol.

VoIP report type related:

The maximum recorded and transmitted VoIP entries can be the first 30 000. The following VoIP protocols are supported: H225, MGCP, SIP, Q931.

g Flexi NG always reports the highest level protocol. In the case of a VoIP protocol encapsulating another VoIP protocol, only the highest level one will be reported.


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Restrictions

g VoIP calls that have not been properly terminated (e.g. time-out, data packet loss) will be reported with 0 call duration. In such cases the reported duration will be included in the CSV file after a grace period.

SIP report specific: The maximum recorded and transmitted SIP entries can be the first 5 000. The maximum amount of characters for each SIP domain can be 50 characters. As several SIP servers can be used to relay the VoIP call, only the first VoIP

server is reported in the case of outgoing calls and the last VoIP server in the case of terminating calls.

The value of the SIP server is extracted from SIP requests, excluding the SIP BYE request. This applies to sessions where the SIP server is not already known. Depending on UL/DL requests the following fields are used for extrac-tion: The value of the SIP server is extracted from URI field in uplink SIP requests. The value of the SIP server is extracted from the first VIA field in downlink

SIP requests.

For detailed information on error cases, see Troubleshooting Flexi NG.


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DPI Reporter References

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8 References1. Nokia Siemens Networks Flexi Network Gateway Site Connectivity Guidelines2. Nokia Siemens Networks Flexi Network Gateway Commissioning and Integrating

Flexi NG3. Nokia Siemens Networks Flexi Network Gateway User Guide4. Nokia Siemens Networks Flexi Network Gateway Alarms5. Nokia Siemens Networks Flexi Network Gateway Troubleshooting Flexi NG6. Nokia Siemens Networks Flexi Network Gateway Security Hardening


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Glossary

9 Glossary

Term Definition

AS application server

CSV comma separated value

CTR call transfer recall

DL downlink

DPI deep packet inspection

EPS evolved packet system

FNG-ID Flexi network gateway identification

FTP File Transfer Protocol

GGSN gateway GPRS support node

HTTP Hypertext Transfer Protocol

IMEI international mobile equipment identity

IMSI international mobile subscriber identity

IP Internet Protocol

MGCP Media Gateway Control Protocol

MSISDN mobile subscriber integrated services digital network number

NG network gateway

PCC policy and charging control

PDP Packet Data Protocol

POP Post Office Protocol

SAB service aware blade

SAI serve at once intelligence

SIP Session Initiation Protocol

UL uplink

Table 1 DPI Reporter Interface Description glossary

DPI ReporterTable of ContentsList of FiguresList of Tables1Summary of changes1.1Changes between release 2.0 and release 2.11.2Changes between release 10 CD8 and release 2.01.3Changes between release 10 CD5.1 and release 10 CD81.4Changes between release 10 CD5 and release 10 CD5.1

2Introduction2.1Scope2.2Audience

3Overview4DPI reports4.1Pushing user-specific reports to SAI4.2Pushing domain reports to SAI4.3Pushing POP3 server reports to SAI4.4Pushing email transactions reports to SAI4.5Pushing VoIP reports to SAI

5Alarms6Error cases7Restrictions8References9Glossary

Documents

Flexi Network