Cisco Systems H.323 manual Set-overload, Level 1 level 2 level, Lower=number, Upper=number

Page 136

Appendix A MML User Interface and Command Reference

set-overload

set-overload

The set-overloadcommand defines the overload handling criteria and behavior. set-overload: level1level2level3:cpu,lower=number, upper=number

set-overload: level1level2level3:calls,lower=number, upper=number

set-overload: level1level2level3:gap,normalall : number

Syntax Description

 

level 1 level 2 level 3

Overload behavior can be provisioned at three separate levels: 1, 2, and 3

 

 

 

(rising in severity).

 

 

 

 

 

 

 

lower=number

The lower threshold for overload detection and restoration of normal call

 

 

 

handling service.

 

 

 

 

 

 

 

upper=number

The upper threshold for overload detection and restoration of normal call

 

 

 

handling service.

 

 

 

 

 

 

The set-overloadcommand defines the upper and lower thresholds for overload detection and

Usage Guidelines

 

 

 

restoration of normal call handling service. The percentage of calls to be gapped and the type of calls to

 

 

be gapped can also be configured. Any changes made become active immediately.

The lower value must always be less than the upper value. If the call gap percentage is set to 0, the system takes no recovery action when overload is encountered, but the appropriate alarm is raised.

Inconsistent threshold settings for different levels can destabilize call processing. For successful execution of this command, ensure that threshold settings are consistent, as follows:

•The number of calls gapped at level 2 must be greater than or equal to the number of calls gapped at level 1.

•The number of calls gapped at level 3 must be greater than or equal to the number of calls gapped at levels 1 and 2.

•The lower level value of CPU occupancy must always be less than the upper level value.

•The lower level value of CPU occupancy and the number of calls for level 2 must be greater than or equal to the corresponding values for level 1.

•The lower level value of CPU occupancy and the number of calls for level 3 must be greater than or equal to the corresponding values for levels 1 and 2.

Examples

In the following example, the command sets the overload handling criteria and behavior at level 1, sets

 

the cpu to the lower threshold of 10, and sets the upper threshold to 14.

 

gw mml> set-overload:level1:cpu,

lower =10,

upper = 14

 

H323 Signaling Interface Day Mon

1 11:21:28

2001

 

M SUCC

 

 

Successfully added that configuration item.

 

Cisco H.323 Signaling Interface User Guide

A-36

OL-4806-01 Rev. A14

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Contents Cisco H.323 Signaling Interface User Guide Corporate HeadquartersCisco H.323 Signaling Interface User Guide N T E N T S Introduction to MML Command Operation for HSI Hairpin 38 Fax RADVision Logging Eisuppathfailure Endpointcallcontrolinterfacefailure MML Help OL-4806-01 Rev. A14 Skeleton Configuration File Xii Document Objectives System AdministratorAudience Document Organization System OperatorSystem Technician This document is organized as follows PrefaceCommand abc Document ConventionsMeaning Comments and Examples BoldfaceGlobal configuration mode Related DocumentationRelease Notes Hardware DocumentationObtaining Documentation Software DocumentationRelated Documentation World Wide WebObtaining Technical Assistance Ordering DocumentationDocumentation Feedback Cisco.comTechnical Assistance Center Cisco TAC Web SiteCisco TAC Escalation Center Introduction Cisco HSI OverviewPGW Cisco HSI System DescriptionIP Network OAM Subsystem Call Control SubsystemNew Features in Cisco HSI Release Operational EnvironmentHardware Requirements RADVision H.323Cisco HSI Recovery Cisco HSI does not implement security featuresCisco HSI System Limitations Software RequirementsOL-4806-01 Rev. A14 Installing the Operating System Installing and Configuring Cisco HSI Software IntroductionHardware and Software Requirements Installing the Cisco HSI Configuring Groups and UsersCheck Preinstallation Task Before You StartCisco HSI Installation Information Source /opt/GoldWing/currentPM/local/setup.gw.csh# vi .cshrc # chmod 777 .cshrcSubdirectory Contents This command displays the following text Installing Cisco HSI# tar xvf GoldWing-4.1.tar # cd /export/BUILDS/4.1 # ./install.sh Following text displaysType the VSC1 name and press Enter Following text displays ## Executing checkinstall script. Modified Environment is VERSION=4.1 Cisco HSI-A Dual HSI Example Configuration Script Starting the Cisco HSIExample # /etc/init.d/CiscoGW startConfiguring the Cisco HSI Stopping the Cisco HSIUpgrading the Cisco HSI # /etc/init.d/CiscoGW stopRemoving the Cisco HSI # ./uninstall.sh# cd /opt/GoldWing # ls -l ## Removing installed package instance OTTgw000 Type y and press Enter. The following text displaysCisco HSI Configuration Provisioning the Cisco HSIMML Configuration Commands CommandCommand Description Prov-sta Prov-cpy Prov-stpIntroduction to MML Command Operation for HSI Initiating an MML Session to Enable Dtmf on the HSIVerifying the Configuration Etc/init.d/CiscoGW startReverting to the Base Configuration System Configuration DataStatic System Data Parameter Type Description Parameter, set it to Enabled Can receive T.38 FAX data. The default value isDefault value is 0xc8 Option. The default value isIssue the command restart-softwconfirm Changing Static System DataParameter Description Default Dynamic System DataOVLDLEVEL1PERCENT OVLDLEVEL3PERCENTOVLDLEVEL1FILTER OVLDLEVEL1THRESHLOWERStack Configuration Nonprovisionable Data MML Provisionable DataSystem Parameters ParametersNull Parameter Name Description Type Example Update TypeProv-addname=q931,maxCalls=2000 RAS Parameters Parameter Name Description Type ExampleManualRAS If this parameter is present Prov-addname=ras,maxfail=3AllowCallsWhenNonReg If this parameter is present, it String H323ESP Prov-addname=h245,masterSlave.timeout=5R0.2.4 Immediate Assigns to each version Update Parameter Name TypeINTEGER0,1 Quick Reference for Important Parameters Codec SelectionParameter Name Parameter Value Description 14presents important static system data parameters Parameter Name Parameter Values Description VSCBPORTNUMBER1/2 VSCBIPADDR1/215presents common RAS parameters HSI Feature Configuration Parameter Name Parameter ValueEmpty Capability Set Asymmetric Codec TreatmentHairpin Configuring T.38 Fax on the Cisco Pstn Gateway Configuring T.38 Fax on a Cisco IOS H.323 GatewayConfiguring T.38 Fax on a Cisco IOS Mgcp Gateway 38 FaxConfiguring Clear Channel on the Cisco HSI Prov-addname=sysconfigstatic,informationmsgdisabled = TrueHSI Support for Tech Prefixes Prov-edname=ccpackage,hash=CClear Channel Parameters Example Value Example Configuration Configuring G.726 on the Cisco HSI Configuring the Payload Type for the Mgcp Parameter Example Value Configuration ExampleConfiguring Cisco HSI g726-cisco Configuring Cisco HSI g726-generic OL-4806-01 Rev. A14 Configuring G.729 Annex and G.729 Annex B ParameterOL-4806-01 Rev. A14 Restarting the Cisco HSI Application Stopping Call ProcessingStarting Call Processing Stopping the Call Processing ApplicationStarting the Call Processing Application Reporting the Cisco HSI StatusCall-Related Measurements Counter Name Measurement Type CommentsFcinccallatttot FcinccallsucctotFcotg Callatttot FcotgcallsucctotAvgroundtripdelay MasterslaveatttotMasterslavesucctot TermcapxchgatttotOverload Resetting MeasurementsRetrieving Counters Overload Level Following MML commands set overload data Setting Overload DataRetrieving Overload Data Logging Rotating Log FilesConvention for Naming the Log File Log File LocationLog Messages Logging LevelsLog Message Packages Log messages have the following formatSetting Gapping Setting Logging LevelsGapping RADVision LoggingRetrieving Call Gapping Data Set-gappingbothcalltype=all,percent=60Alarm Severity Levels Alarms OverviewDebounce Retrieving and Reporting Alarms Snmp Trap TypesInformational Event Requirements Severity Level DescriptionRetrieving Alarm Messages Noncontinuous ModeContinuous Mode To display all current alarms, use the rtrv-almsMML commandAcknowledging and Clearing Alarms Element DescriptionSystemId Name of your device and its identifier YYYY-MM-DDAlarms List Alarm Event and Reference Severity LevelTroubleshooting TroubleshootingDescription Severity Level and Trap TypeEisuppathfailure This alarm has not been implemented One of the two links to a single Cisco PGW 2200 has failedPercentage of disk usage is greater than the alarm limit LowdiskspaceUse the clr-almcommand to attempt to clear the alarm VscfailureRunning configuration has been modified Severity level is minor. The trap type isSeverity level is information. The trap type is This is an informational eventRADVision stack reports this alarm EndpointcallcontrolinterfacefailureGappedcallnormal OVERLOADLEVEL1 Provisioningsessiontimeout User has entered the stp-callproccommand through the MMLDetailed Logging Starting an MML Command Session in the Cisco HSI MML User Interface and Command Reference IntroductionEtc/init.d/CiscoGW start Exit out of superuser MML Command Syntax MML CommandsMML Command Conventions Symbol Description Starting an MML SessionCase Sensitivity MmlCreating a Batch File Batch FilesStarting a Batch File MML Responses Status MessagesStatus Message Description RtrvError Messages Error Message Definition DescriptionMML Help Quitting an MML SessionMML Command Reference This section describes the following MML commandsAck-almevent=alarm event Ack-almClr-almevent=alarm event Clr-almcommand clears an alarm eventClr-alm Diaglog ExamplesHelp StartEnd RedisplayHelprtrv-ctr RTRV-CTRProv-addcommand adds a component to the Cisco HSI Prov-addProv-cpy ConfirmUsage Guidelines Prov-addSysconfigstatic Sysconfigdynamic H323sys Ras H245 Q931 Related Commands DescriptionProv-dlt SessionProv-ed Prov-edcommand modifies a provisioned componentGw mml prov-edname=ras,maxfail=7 MML batch feature to import the exported data InstallationProv-exp Prov-stasrcver=active, dstver=dummy1Prov-rtrv Name ras Gw mml prov-rtrvname=rasGw mml prov-rtrvsession Gw mml prov-rtrvlistProv-sta Prov-stasrcver=version,dstver=versionProv-stp Prov-stpconfirm prov-stpsession nameconfirmSession name Process that started the provisioning sessionGw mml prov-stpuk9confirm Gw mml prov-stpconfirmGw mml prov-stpmml2confirm Quit RadlogQuit Radlogfile namestart stopGw mml restart-softwconfig2 Restart-softwGw mml restart-softwinit Gw mml restart-softwRtrv-alms Rtrv-alms rtrv-almscontCont Ack-almClr-meas Resets a measurement counter Rtrv-callsRtrv-ctr Syntax Description ExamplesSignalling path to the PGW Service is or out of service OOSRtrv-dest Set-dest-stateRtrv-log Rtrv-gappingSyntax Description Rtrv-mml Rtrv-ne Rtrv-ne-healthRtrv-ne Status of the Cisco HSIRtrv-overload Rtrv-overloadGw mml rtrv-ne-health Gw mml rtrv-overloadRtrv-softw Gw mml rtrv-softwOOS Set-dest-stateRtrv-dest Set-gapping Set-log PackageOne of the packages in the Cisco HSI Data to be activatedSet-overload Level 1 level 2 levelLower=number Upper=numberSta-callproc Related Commands RetrieveSta-softw Sta-trc Sta-trccommand starts the call processing tracing functionSta-callproc Starts call processing Stp-call Stp-callcallref=x stp-callallCallref Rtrv-callsStp-callproctimeout=T Stp-callprocStp-trc Stp-trcSta-trc Starts the call processing tracing function OL-4806-01 Rev. A14 Skeleton Configuration File RASmaxFailD1-200Sysconfigstatic Sysconfigstatic HOSTPORTNUMBER1 SSysconfigstatic HOSTPORTNUMBER2 S Sysconfigstatic VSCAPORTNUMBER2CCECChannelOutOfService CCECCugAccessBarredCCECNetworkAddressExtensionError S CCECOperatorPriorityAccessSysconfigstatic CCECPrefix0DialledInError Sysconfigstatic CCECPrefix1DialledInErrorSysconfigstatic CCECPrefix1NotDialled Sysconfigstatic CCECPriorityForcedReleaseSysconfigdynamic AlarmDebounceTime 60000 ResponseTimeOut 200OvldLevel2ThreshUpperCPU 100 OvldLevel3Percent 100H245 MasterSlave.timeout 65535 MasterSlave.manualOperation Q931 OverlappedSendingQ931 EarlyH245 Q931 H245tunnelingH245 Modesi.audio.g711Alaw64k H245 Modesi.audio.g711Alaw56kH245 Modesi.audio.g711Ulaw64k H245 Modesi.audio.g711Ulaw56kEisup Accgdes AccgdtdAccnocivc AccnociecdiAccwaitrelretry AccnumrelretriesAccwaitrlcfail CCPackage CCECServiceOrOptionNotAvail CCPackage CCECServiceOrOptionNotImpUnspecCCPackage CCECInvalidElemContents CCPackage CCECRecoveryOnTimerExpiryCCPackage CCHCExchangeRouteError CCPackage CCHCPermanentFrameModeConnectionOutOfService CCCPackage CCHCSwitchingEquipmentCongestion CCPackage CCHCAccessInformationDiscardedCCPackage CCHCServiceOrOptionNotImplemented CCPackage CCHCInvalidInformationElementContentsCCPackage CCHCRecoveryOnTimerExpiry CCPackage CCHCBearerCapabilityNotImplementedCisco H.323 Signaling Interface User Guide Trace Trigger2.h323.CalledPartyNumber Trace Trigger2.h323.OriginatingIPAddressTrace Trigger2.h323.OriginatingIPMask Trace Trigger2.h323.TerminatingIPAddressEisup Rudptimercheckperiodmsec Eisup WaittimebeforefailovermillisecH323 MaxTimers TickPeriod DefaultSDPt Q931 ConnectTimeoutConstNumberNoRangeConst Q931 NonQuotedConstExample of an HSI Configuration File # Logging PackageAppendix C Example of an HSI Configuration File Appendix C Example of an HSI Configuration File Appendix C Example of an HSI Configuration File # Call Control Package # FCI Accgdes =Accgdtd = Accnociecdi = Accnocicci = Accnocisi = Acctmr =Appendix C Example of an HSI Configuration File Appendix C Example of an HSI Configuration File Appendix C Example of an HSI Configuration File Appendix C Example of an HSI Configuration File # Faultmanagement Package # Gapping Package# Trace Package Appendix C Example of an HSI Configuration File # Eisup Package # Application Package# Dynamic System Data AlternategatekeeperipAlternategatekeeperport = Alternategatekeeperid Logprio = Trace= Cchcdefault OVLDLEVEL2FILTER = NormalNormal OVLDLEVEL2THRESHUPPERCPU OVLDLEVEL3FILTER = NormalCCECNetworkAddressExtensionError CCECBlacklistBNumberMatchedCCECBlacklistCliLengthInvalid CCECCallingDroppedWhileOnHoldCCECPrefix0DialledInError CCECPrefix1DialledInErrorCCECProtocolErrorUnspec CCECRemoteProcErrorAppendix C Example of an HSI Configuration File OL-4806-01 Rev. A14 Isup Name-to-Cause Value Lookup Name ValueAppendix D E-ISUP Name-to-Cause Value Lookup Cisco H.323 Signaling Interface User Guide OL-4806-01 Rev. A14 Isup Cause Value-to-Name Lookup Value NameAppendix E E-ISUP Cause Value-to-Name Lookup Appendix E E-ISUP Cause Value-to-Name Lookup OL-4806-01 Rev. A14 Name-to-Cause Value Lookup Appendix F H.323 Name-to-Cause Value Lookup Cause Value-to-Name Lookup Appendix G H.323 Cause Value-to-Name Lookup Configchange Lowdiskspace OVERLOADLEVEL1 OVERLOADLEVEL2 OVERLOADLEVEL3Stopcallprocessing VscfailureClr-meas command Codec parameters Commands ack-alm clr-alm clr-meas diaglogConfigchange alarm Data Configurable B-1 Constant B-1Isup EndpointcallcontrolinterfacefailurEndpointchannelinterfacefailure HSIMML commands case sensitivity A-3conventions A-2 Man-machine languageAlarmdebouncetime Ciagentscanperiod Codec Dynamic system data 245 SystemLogdirectory Logfilerotateinterval Logfilerotatesize Nonprovisionable data OverlappedSendingRelated documentation Reliable User Datagram Protocol931 See Rudp Pkinst fileStp-softw command Vscfailure alarmSnmp Manager MIB Subagent
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H.323 specifications

Cisco Systems H.323 is a set of standards designed for transmitting audio, video, and data over packet-switched networks. It is a critical technology that enables real-time communication and has become integral to the world of VoIP (Voice over Internet Protocol) and video conferencing applications. Originally developed by the ITU-T, H.323 has been widely adopted and implemented by Cisco Systems, allowing organizations to leverage reliable and scalable communication solutions.

One of the standout features of H.323 is its ability to support interoperability among varying equipment and platforms. This means that devices from different manufacturers can communicate seamlessly, which is vital in a diverse technical environment. H.323 does this by defining protocols that handle signaling, media transport, and control, ensuring that various systems can work together effectively.

Key technologies utilized within H.323 include H.225 and H.245 signaling protocols. H.225 is responsible for call setup and management, establishing communication between endpoints. In contrast, H.245 manages the negotiation of media channels, allowing devices to configure themselves based on the capabilities of each other. This adaptability is crucial for dynamic network conditions typical in VoIP applications.

Another defining characteristic of H.323 is its support for multiple types of multimedia communication, including point-to-point and multipoint calls. This flexibility supports everything from simple audio calls to complex videoconferencing setups, where many participants can share video and audio streams concurrently. Cisco enhances this capability through its hardware and software offerings, optimizing performance for conference calls.

H.323 also features robust error resilience mechanisms. This ensures that real-time data, which is typically sensitive to delays and losses, can be transmitted with minimal disruption. Moreover, it facilitates quality of service (QoS) implementation, allowing organizations to prioritize voice and video traffic over less critical data services, thereby improving the overall user experience.

In conclusion, Cisco Systems H.323 stands out as a comprehensive solution for real-time communication over packet-based networks. Its main features, including interoperability, multimedia support, and enhanced error resilience, position it as a relevant technology in both corporate and personal communication settings. As organizations continue to adopt cloud and hybrid communication models, H.323 remains a reliable backbone for ensuring connectivity and collaboration across diverse platforms.
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