IP Performance Monitor(GBSS13.0_01)

IP Performance Monitor GBSS13.0

Feature Parameter Description

Issue 01

Date 2012-06-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright Huawei Technologies Co., Ltd. 2012. All rights reserved.

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Huawei Technologies Co., Ltd.

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GSM BSS

IP Performance Monitor Contents

Issue 01 (2012-06-30) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd.

ii

Contents

1 About This Document ......................................................................................................... 1-1

1.1 Scope ...................................................................................................................................... 1-1

1.2 Intended Audience ................................................................................................................... 1-1

1.3 Change History ........................................................................................................................ 1-1

2 Overview ................................................................................................................................ 2-1

3 Technical Description.......................................................................................................... 3-1

3.1 Principles ................................................................................................................................. 3-1

3.2 Application Scenarios ............................................................................................................... 3-2

4 Related Features .................................................................................................................. 4-1

4.1 Prerequisite Features ............................................................................................................... 4-1

4.2 Mutually Exclusive Features ..................................................................................................... 4-1

4.3 Affected Features ..................................................................................................................... 4-1

5 Impact on the Network ........................................................................................................ 5-1

5.1 Impact on System Capacity ...................................................................................................... 5-1

5.2 Impact on Network Performance .............................................................................................. 5-1

6 Engineering Guidelines ...................................................................................................... 6-1

6.1 When to Use IP Performance Monitor....................................................................................... 6-1

6.2 Information to Be Collected ...................................................................................................... 6-1

6.3 Network Planning ..................................................................................................................... 6-1

6.4 Overall Deployment Procedure ................................................................................................. 6-1

6.5 Deploying IP Performance Monitor ........................................................................................... 6-1

6.6 Troubleshooting ....................................................................................................................... 6-1

7 Parameters ............................................................................................................................ 7-1

8 Counters ................................................................................................................................ 8-1

9 Glossary ................................................................................................................................. 9-1

10 Reference Documents..................................................................................................... 10-1

GSM BSS

IP Performance Monitor 1 About This Document



1-1

1 About This Document

1.1 Scope

This document describes the GBFD-118607 IP Performance Monitor feature, including its working principles, feature dependencies, network impact, and engineering guidelines.

1.2 Intended Audience

This document is intended for:

Personnel who need to understand the IP Performance Monitor feature

Personnel who work with Huawei GSM products

1.3 Change History

This section provides information about the changes in different document versions.

There are two types of changes, which are defined as follows:

Feature change: refers to a change in the IP Performance Monitor feature of a specific product version.

Editorial change: refers to a change in wording or the addition of information that was not described in the earlier version.

Document Issues

The document issue is as follows:

01 (2012-06-30)

01 (2012-06-30)

This is the initial release of GBSS 13.0.

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IP Performance Monitor 2 Overview



2-1

2 Overview

Compared with traditional wireless bearer networks that use time division multiplexing (TDM) or asynchronous transfer mode (ATM) transmission, an IP bearer network provides larger bandwidth at a lower cost but makes network maintenance and measurement more difficult. To quickly locate faults and measure transmission quality, a means is required to monitor the quality of service (QoS) of the IP bearer network between the BSC and BTS in real time. To meet this requirement, Huawei introduces the IP PM feature. IP PM uses a Huawei proprietary protocol and requires support from both the BSC and BTS.

By effectively monitoring the changes in QoS-related parameters such as packet loss rate, delay, and delay variation, IP PM quickly checks the QoS of an IP bearer network over the Abis interface online. The check results serve as a basis for flow control and admission control.

With IP PM, an alarm is reported if the transmission quality of the IP bearer network deteriorates, for example, the packet loss rate exceeds a specified threshold.

By providing long-period traffic statistics, IP PM enables operators to monitor the QoS of the IP bearer network in real time and to quickly locate transmission problems, especially when the data rate is unstable. This reduces maintenance costs.

IP PM monitors the changes in the bandwidth of the IP bearer network in real time and provides a basis for dynamically adjusting the bandwidth over the Abis interface.

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IP Performance Monitor 3 Technical Description



3-1

3 Technical Description

3.1 Principles

The IP PM protocol defines Forward Monitoring (FM) and Backward Reporting (BR) frames. With FM and BR frames, IP PM calculates the delay, delay variation, and packet loss rate for an IP path. Figure 3-1 shows the working principle of IP PM.

Figure 3-1 Working principle of IP PM

IP PM works as follows:

The local end (A in Figure 3-1) periodically sends the remote end (B in Figure 3-1) an FM frame. The FM frame includes the number of service packets and bytes transmitted in the current measurement period and the time when the FM frame was sent.

Upon receiving the FM frame, the peer end records in a BR frame the FM frame receive time and the number of service packets and bytes received in the current measurement period. Then the peer end sends the BR frame to the local end and records in the BR frame the time when the BR frame was sent.

The local end calculates the number of packets that are lost based on the number of packets sent from the FM frame and the number of packets received in the BR frame. The packet loss rate equals the number of packets that are lost divided by the number of packets sent. The delay and delay variation can be obtained based on the transmit time and receive time contained in the FM and BR frames.

IP PM monitors a measured IP path between the BSC and a BTS in real time and provides the delay, delay variation, and packet loss rate in the IP bearer network. Flow control and admission control are performed based on the monitoring results. If the delay variation or packet loss rate for a measured link increases, the flow on the logical port of the link is adjusted to decrease link load and relive link congestion.

IP PM can track a certain type of services in real time, such as Enhanced Data rates for GSM Evolution (EDGE) services or circuit switched (CS) services. This helps to identify faulty services.

IP PM is manually activated by running the ACT IPPM command on the BSC side.

The related parameters are as follows:

ANI and PATHID specify which IP path uses IP PM. If a QoS path uses IP PM, the Per-Hop Behavior (PHB) value is specified by the PHB parameter.

ISQOSPATH specifies whether a path is a QoS path.

PMPRD specifies the IP PM packet sending period. The value of PMPRD ranges from 0 to 10,000 ms.

IP PM is manually activated by running the ACT BTSIPPM command on the BTS side.

The related parameters are as follows:

IDTYPE specifies the type of index for enabling IP PM on the BTS side. This parameter can be set to BYNAME(By Name) or BYID(By Index).

GSM BSS

IP Performance Monitor 3 Technical Description



3-2

SRVTYPE specifies the service type of an IP interface board. The service type can be CS voice, CS data, PS high priority, or PS low priority.

PMPRD specifies the IP PM packet sending period. The value of PMPRD ranges from 0 to 10,000 ms.

Upon detecting that the transmission quality of an IP bearer network has deteriorated, IP PM reminds online users with an alarm.

On the BSC side: Upon detecting that the packet loss rate of a specified IP path exceeds the threshold specified by LOSTPKTALARMTHD, IP PM reports to the M2000 the alarm ALM-21352 IP Path Excessive Packet Loss Rate.

The LOSTPKTDETECTSW parameter in the ACT IPPM command must be set to ON(ON).

3.2 Application Scenarios

The BSC and BTS support IP PM when IP over FE/GE is used.

The BSC and BTS support IP PM when BTSs are cascaded.

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IP Performance Monitor 4 Related Features



4-1

4 Related Features

4.1 Prerequisite Features

IP PM depends on the GBFD-118601 Abis over IP feature.

4.2 Mutually Exclusive Features

None

4.3 Affected Features

None

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IP Performance Monitor 5 Impact on the Network



5-1

5 Impact on the Network

5.1 Impact on System Capacity

None

5.2 Impact on Network Performance

Due to the introduction of control packets, IP PM occupies extra bandwidth and increases the overhead on the IP path. The overhead is used for periodically transmitting FM and BR frames and is less than 6kbit/s.

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IP Performance Monitor 6 Engineering Guidelines



6-1

6 Engineering Guidelines

6.1 When to Use IP Performance Monitor

Use IP PM when:

The line rate is unstable and the bandwidth fluctuates in the IP bearer network between the BSC and BTS.

The PS data rate is poor. For example, the download rate is unstable.

6.2 Information to Be Collected

None

6.3 Network Planning

Network Topology

None

Hardware Planning

On the BSC side:

A GOUc/FG2c/GOUa/FG2a interface board is configured.

On the BTS side:

A GTMU or GTMUb board is configured.

6.4 Overall Deployment Procedure

None

6.5 Deploying IP Performance Monitor

For details about how to activate, verify, and deactivate this feature, see Configuring IP Performance Monitor.

6.6 Troubleshooting

The alarm ALM-21341 IP PM Activation Failure is reported if activating IP PM on the BSC side fails. When this occurs, troubleshoot the fault by referring to the handling suggestions available from the BSC online help.

GSM BSS

IP Performance Monitor 7 Parameters



7-1

7 Parameters

Table 7-1 Parameter description

Parameter ID

NE MML Command Feature ID Feature Name

Description

ANI BSC6900

ADD IPPATH(Mandatory)

MOD IPPATH(Mandatory)

RMV IPPATH(Mandatory)

GBFD-118601

GBFD-118602

GBFD-118605

GBFD-118611

GBFD-118622

WRFD-05030104

WRFD-050403

WRFD-050404

WRFD-02130501

Abis over IP

A over IP

IP QOS

Abis IP over E1/T1

A IP over E1/T1

Dynamic AAL2 Connections in Iub/IuCS/Iur Interface

Hybrid Iub IP Transmission

ATM/IP Dual Stack Node B

Dedicated Iub Transmission Control

Meaning: Uniquely identifies an adjacent node. The numbers of adjacent nodes range from 0 to 4599. Adjacent nodes are uniquely but not necessarily consecutively numbered within a BSC6900.

GUI Value Range: 0~4599

Actual Value Range: 0~4599

Default Value: None

Unit: None

IDTYPE BSC6900

ADD BTSBFD(Mandatory)

MOD BTSBFD(Mandatory)

RMV BTSBFD(Mandatory)

MRFD-210301 Configuration Management

Meaning: Type of an index

GUI Value Range: BYNAME(By Name), BYID(By Index)

Actual Value Range: BYNAME, BYID

Default Value: None

Unit: None

ISQOSPATH

BSC6900

ADD IPMUX(Mandatory) GBFD-118604

GBFD-118610

WRFD-050420

WRFD-050412

Abis MUX

UDP MUX for A Transmission

FP MUX for

Meaning: This parameter specifies whether it is QOSPATH, or

not.

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7-2

Parameter ID


Description

IP Transmission

UDP MUX for Iu-CS Transmission

GUI Value Range: NO(NO), YES(YES)

Actual Value Range: NO, YES

Default Value: None

Unit: None

PATHID BSC6900

ADD IPPATH(Mandatory)

MOD IPPATH(Mandatory)

RMV IPPATH(Mandatory)

GBFD-118601

GBFD-118602

GBFD-118605

GBFD-118611

GBFD-118622

WRFD-050402

Abis over IP

A over IP

IP QOS

Abis IP over E1/T1

A IP over E1/T1

IP Transmission Introduction on Iub Interface

Meaning: Uniquely identifies an IP path

GUI Value Range: 0~65535

Actual Value Range: 0~65535

Default Value: None

Unit: None

PHB BSC6900

ADD IPMUX(Mandatory) GBFD-118604

GBFD-118610

WRFD-050420

WRFD-050412

Abis MUX

UDP MUX for A Transmission

FP MUX for IP Transmission

UDP MUX for Iu-CS Transmission

Meaning: PHB type of the IPMUX to be enabled

GUI Value Range: BE(BE), AF11(AF11), AF12(AF12), AF13(AF13), AF21(AF21), AF22(AF22), AF23(AF23), AF31(AF31), AF32(AF32), AF33(AF33), AF41(AF41), AF42(AF42), AF43(AF43), EF(EF)

Actual Value Range: BE, AF11, AF12, AF13, AF21, AF22, AF23,

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7-3

Parameter ID


Description

AF31,

AF32, AF33, AF41, AF42, , AF43, EF

Default Value: None

Unit: None

SRVTYPE BSC6900

RMV BTSABISMUXFLOW(Mandatory)

ADD BTSABISMUXFLOW(Mandatory)

MOD BTSABISMUXFLOW(Mandatory)

GBFD-118605 IP QOS Meaning: Service type of the IP interface board. The service type can be CS speech, CS data, PS high priority, or PS low priority.

GUI Value Range: CSVOICE(CS Voice), CSDATA(CS Data), PSHIGHPRI(PS High PRI), PSLOWPRI(PS Low PRI)

Actual Value Range: CSVOICE, CSDATA, PSHIGHPRI, PSLOWPRI

Default Value: None

Unit: None

GSM BSS

IP Performance Monitor 8 Counters



8-1

8 Counters

Table 8-1 Counter description

Counter ID Counter Name Counter Description

Feature ID Feature Name

67192968 VS.IPPM.MaxRttDelay T7663:Maximum RTT Delay of IPPM

GBFD-118607

WRFD-050422

IP Performance Monitor

Dynamic Bandwidth Control of Iub IP

67204117 VS.IPPM.Bits.MeansTx T7668:Average TX Bit Rate of IPPM

GBFD-118607

WRFD-050422



67204118 VS.IPPM.Pkts.MeansTx T7669:Average TX Packet Rate of IPPM

GBFD-118607

WRFD-050422



67204119 VS.IPPM.Peak.Bits.RateTx T7670:Peak TX Bit Rate of IPPM

GBFD-118607

WRFD-050422



67204120 VS.IPPM.Peak.Pkts.RateTx T7671:Peak TX Packet Rate of IPPM

GBFD-118607

WRFD-050422



67204121 VS.IPPM.Peer.Bits.MeansRx T7672:Average RX Bit Rate of IPPM

GBFD-118607

WRFD-050422



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8-2



67204122 VS.IPPM.Peer.Pkts.MeansRx T7673:Average RX Packet Rate of Peer End of IPPM

GBFD-118607

WRFD-050422



67204123 VS.IPPM.Peer.Peak.Bits.RateRx T7674:Peak RX Bit Rate of Peer End of IPPM

GBFD-118607

WRFD-050422



67204124 VS.IPPM.Peer.Peak.Pkts.RateRx T7675:Peak RX Packet Rate of Peer End of IPPM

GBFD-118607

WRFD-050422



67204127 VS.IPPM.Forword.DropMeans T7676:Average Forward Packet Loss Rate of IPPM

GBFD-118607

WRFD-050422



67204128 VS.IPPM.Forword.Peak.DropRates T7677:Peak Forward Packet Loss Rate of IPPM

GBFD-118607

WRFD-050422



67204131 VS.IPPM.Forward.JitterStandardDeviation

T7678:Forward Jitter Standard Deviation of IPPM

GBFD-118607

WRFD-050422



67204132 VS.IPPM.Rtt.Means T7680:Average RTT Delay of IPPM

GBFD-118607

WRFD-050422


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8-3




67204731 VS.IPPM.Back.JitterStandardDeviation T7679:Backward Jitter Standard Deviation of IPPM

GBFD-118607

WRFD-050422



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IP Performance Monitor 9 Glossary



9-1

9 Glossary

For the acronyms, abbreviations, terms, and definitions, see the Glossary.

GSM BSS

IP Performance Monitor 10 Reference Documents



10-1

10 Reference Documents

None

1 About This Document1.1 Scope1.2 Intended Audience1.3 Change HistoryDocument Issues01 (2012-06-30)

2 Overview3 Technical Description3.1 PrinciplesFigure 3-1 Working principle of IP PM

3.2 Application Scenarios

4 Related Features4.1 Prerequisite Features4.2 Mutually Exclusive Features4.3 Affected Features

5 Impact on the Network5.1 Impact on System Capacity5.2 Impact on Network Performance

6 Engineering Guidelines6.1 When to Use IP Performance Monitor6.2 Information to Be Collected6.3 Network PlanningNetwork TopologyHardware Planning

6.4 Overall Deployment Procedure6.5 Deploying IP Performance Monitor6.6 Troubleshooting

7 ParametersTable 7-1 Parameter description

8 CountersTable 8-1 Counter description

9 Glossary10 Reference Documents