Huawei v200r001 user manual Configure the Cisco-compatible RTP header compression

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User Manual - Configuration Guide (Volume 3)	Chapter 5
Versatile Routing Platform	IPHC Configuration

Notice: After the configuration completes, please perform one “shutdown” and “no shutdown” operation to take effect the configuration.

5.2.4 Configure the Max. Connection Number of TCP Header Compressions

The subscriber can specify the maximum connection number on an interface that performs TCP header compression.

Please perform the following configurations in interface configuration mode.

Table VC-5-3Configure the maximum connection number of TCP header compression

Operation	Command

Configure the maximum connection number of TCP	ip tcp header-compression
header compression

Restore the default value of the maximum connection number of TCP header compression

no ip tcp header-compression

By default, the maximum connection number of TCP header compression that the interface allows is 16. The value ranges from 4 to 256.

Notice: After the configuration completes, please perform one “shutdown” and “no shutdown” operation to take effect the configuration.

5.2.5 Configure the Cisco-compatible RTP header compression

Please perform the following configurations in interface configuration mode.

Table VC-5-4Enable/Disable the Cisco-compatible RTP header compression

Operation	Command

Enable the Cisco-compatible RTP Header Compression	ip rtp header-compression cisco-format
	ip rtp header-compression cisco-format

Disable the Cisco-compatible RTP Header Compression	no ip rtp header-compression cisco-format

By default, Cisco-compatible RTP header compression is enabled.

5.2.6 Configure the deleting of udp_chk field from UDP header

The udp_chk field in UDP header can be set to 0, in other words, ignore UDP checksum field when performing header compression. In this way, 2-byte length in the header is saved.

Please perform the following configurations in interface configuration mode.

Table VC-5-5Configure Deleting/Resetting the udp_chk Field in UDP Header

Operation	Command

Delete the udp_chk field in UDP header	ip rtp header-compression delete-udpchk
Reset the udp_chk field in UDP header	no ip rtp header-compression delete-udpchk

By default, the udp_chk field in UDP packet field is set to 0.

5-3

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Contents V200R001 HuaweiBOM31010868 Manual Version T2-080168-20011213-C-1.5About This Manual ContentsKey 1, Key Format Description KeyBracket, e.g. Enter , Tab , Backspace , or a Key 1 + KeyAction Description SymbolHuawei Security Configuration SCII. IKE features Configuration of IKECreating IKE Security Policy IKE Configuration Task ListSelect Authentication Algorithm No IKE security policy is created by defaultSelect Encryption Algorithm Set Pre-shared Key Select Hashing AlgorithmSelect DH Group ID Show IKE SA parameter Quidway# show crypto ike sa Set Lifetime of IKE Association SAShow IKE security policy Quidway# show crypto ike policy Networking requirementsIII. Configuration procedure II. Networking diagramProblem 1 Invalid user ID information VPN Configuration VPN Table of Contents VPN Overview VPN featuresClassification of IP VPN According to operation modeIII. According to service purpose II. According to the layer where the tunnel isIV. According to networking model Brief induction to Vpdn Configuration of L2TPBrief Introduction to L2TP Protocol Overview of Vpdn2 L2TP Protocol III. Method to realize VpdnTunnel and session III. Two typical L2TP tunnel modes II. Control message and data messageCall setup flow of L2TP channel is shown in the following IV. Call setup flow of L2TP tunnelFigure VPN-2-3Call setup flow of L2TP channel Features of L2TP protocolConfiguring L2TP 1 L2TP Configuration Task ListConfiguring at LAC Side II. Create Vpdn group Disable Vpdn to run by defaultTable VPN-2-4L2TP attribute table Configuring at LNS SideDisable Vpdn running by default IV. Set the connection request to originate L2TP channelNo accept dialin III. Create/delete virtual interface templateNo vpdn group group-number Accept dialin l2tp virtual-template virtualOptional configuration III. Force local end to perform Chap authenticationSet local name of channel Set domain name delimiter and search sequence Local end does not perform Chap authentication by defaultLCP does not renegotiate by default IV. LNS forces LCP to renegotiateDisable hiding AV pairs by default VII. Enable/disable hiding AV pairsVIII. Force to disconnect tunnel Monitoring and Maintenance of L2TPNetworking requirement Typical Configuration of L2TPShow l2tp session command domain NAS-Initialized VPNIII. Configuration procedure Client-Initialized VPN Figure VPN-2-5Networking diagram of Client-Initialized VPNSingle User Interconnects Headquarters via Router Chapter Fault Diagnosis of L2TP Configuration of GRE Brief Introduction to GRE ProtocolBrief introduction to the protocol Figure VPN-3-2Format of transmission message in the tunnel II. Applicable rangeGRE Configuration Task List Configuring GRESetting the Source Address of Tunnel Interface Setting the Destination Address of Tunnel InterfaceCreating Virtual Tunnel Interface Setting Tunnel Interface to Check with Check Sum Setting the Network Address of Tunnel InterfaceSetting the Encapsulation Mode of Tunnel Interface Message Setting the Identification Key Word of Tunnel InterfaceMonitoring and Maintenance of GRE Disable tunnel interface to check with check sum by defaultShow interface tunnel tunnel-number Figure VPN-3-6Networking diagram of GRE application Typical Configuration of GREChapter Troubleshooting GRE Reliability Configuration LC Configuration of Hsrp Configuration of Backup CenterConfiguration Task List Configuration of Backup CenterBackup Center Overview Configuring the Backup CenterBackup logic-channel logic-channel No backup delay Configuring Routes for Main and Backup Interfaces Backup state-down numberBackup state-up interval-time An Example of Multiple Backup Interfaces Monitoring and Maintaining of Backup CenterTypical Configuration of Backup Center An example of Backup Between InterfacesChapter Chapter Hsrp Overview Configuration of HsrpStarting Hsrp Function Configuring HsrpStandby group-number preempt Setting Router’s Priority in Hsrp Hot Standby GroupSetting Router’s Preemption Mode in Hsrp Standby Group Setting Hsrp Authorization WordMonitoring the Specified Interface Setting Hsrp TimerTable LC-2-4Set Hsrp authorization word Standby group-numberauthentication stringUsing Actual Interface MAC Address Modifying Virtual MAC AddressTable LC-2-6Monitor the specified interface Show relevant Hsrp information Quidway# show standby Typical Configurations of HsrpAn example for single hot standby group configuration Monitoring and Maintaining Hsrp202.38.160.111 An example for setting Hsrp to monitor a specified interface An example for multiple hot standby groups configuration Fault Diagnosis and Troubleshooting of Hsrp QoS Configuration QC CAR Configuration Example Configure CAR Rules Based on the MAC AddressApply CAR Rules to Packets Which is Matched the ACL QoS Overview Three service types of QoSBest-effort Service II.Integrated ServiceFunctions of QoS III. Differentiated ServiceChapter Introduction to Traffic Classification II. CAR Committed Access RateTraffic Classification and Policing Traffic Classification and PolicingIntroduction to Traffic Policing Features of Token BucketIntroduction to CAR II.Traffic Measuring with Token BucketIII Complicacy Evaluation Specify CAR rules CAR ConfigurationCAR Configuration Task List No CAR rule is specified by defaultShow CAR statistics Quidway# show car interface serial Monitoring and Maintenance of CARTable QC-2-3Monitoring and maintenance of CAR Apply the CAR Rule on the InterfaceRequirements CAR Configuration ExampleII.Configuration Applying CAR Rules to All PacketsApply CAR Rules to Packets Which is Matched the ACL III. ConfigurationConfigure CAR Rules Based on the Priority Level Configure CAR Rules Based on the MAC AddressII.Networking diagram Chapter Congestion Management Policy Congestion ManagementCongestion and Congestion Management About CongestionIII. CQ Custom Queuing IV. WFQ Weighted Fair QueuingFifo Queuing II. PQ Priority QueuingSelecting Congestion Management Policy No. Advantages Disadvantages Queue Working Principle of Congestion Management PolicyFifo III. CQ Configuration of Congestion Management Configuring PQPQ Configuration task list II. Configuring priority queue Normal low Priority-list list-number interface type number high mediumIV. Maintaining and monitoring the priority queue Table QC-3-7Configuration of queue length of priority queueInterface adopts Fifo queuing by default III. Applying priority queue to the interfaceConfiguring CQ CQ configuration task listII. Configuring the custom queue No custom-list list-number interface type number Operation Command Configure the default custom queueNo custom-list list-number queue queue-number byte-count III. Applying custom queue to the interfaceNo custom-list list-number queue queue-number limit Custom-list list-number queue queue-number byte-countIII. Maintenance and monitoring of the weighted fair queue Configuring WFQWFQ configuration task list II. Configuring the weighted fair queueConfiguration Example of Congestion Management PQ Configuration ExampleCQ Configuration Example Figre QC-3-6Networking diagram of CQ Configuration Versatile Routing Platform Troubleshooting of Congestion Management DDR Configuration DC Configuring Synchronous/Asynchronous Serial Port Using DDR DDR ConfigurationDDR in Which the Router Calls Back PC Configuration of Modem Management DDR Configuration Brief Introduction to Dial ConfigurationIntroduction to DDR Technology Figure DC-1-1DDR configuration preparation flow Preparing DDR ConfigurationII. Configure an interface to send calls Configuring DDRConfiguring Legacy DDR Configuration tasks of Legacy DDR includeDialer string dial-string isdn-address Dialer rotary-group number Figure DC-1-2Schematic diagram of Dialer Rotary Group III. Configure an interface to receive callsVersatile Routing Platform DDR Configuration IV. Configure an interface to send and receive callsSet the attribute parameters of Legacy DDR Table DC-1-13Set the idle time of busy interface Permit deny Table DC-1-16Set access control of the dial interfaceAccess-list access-list-numberdeny permit Access-list access-list-number deny permitConfiguring Dialer Profile Default interval is 300 secondsIntroduction to Dialer Profile II. Configuration task list of Dialer Profile III. Configure a logic dial interfaceIV. Set the attribute parameters of a dial interface II. Terms and abbreviations Configuring CallbackBind physical interfaces for a dialer pool Significance of callbackInterface dialer IV. Configure Isdn calling line identification callbackDialer caller remote-number callback Or dialer caller remote-numberUser name callback-dialstring telephone-number Configure PPP callbackChapter Table DC-1-28Client end using Legacy DDR to configure PPP Configure Isdn dedicated line Configuring DDR Special FunctionsII. Configure autodial III. Configure cyclic use of dialer mapAutodial interval is 300 seconds by default Monitoring and Maintenance of DDR Table DC-1-34Configure cyclic use of dialer mapName Meaning DDR Typical Configuration Example Legacy DDRNetwork requirements Chapter Dialer Profile Chapter Networking diagram II. Configuration procedurePoint-to-Point DDR Chapter Chapter 8810063 Point-to-Multipoint DDRChapter Chapter Multipoint-to-Multipoint DDR 88100528810148 III. Configuration procedure Chapter Chapter Chapter Chapter DDR Bearing IPX Chapter Chapter Chapter DDR Bearing IP and IPX at the Same Time Chapter Chapter Chapter 661012 Flow Control of Dialer Profile MP over Dialer Profile-CaseRouterA RouterB BRI0 2.2Chapter Channels for Dial-up and Connection to the Remote End Case Figure DC-1-11Networking diagram of DDR CaseChapter Two Serial Ports for Dial-up and Remote Dial Connection Case One Serial Port for Dial-up and Remote Dial Connection Case Chapter DDR for Access Service Chapter Chapter Chapter Chapter DDR for Inter-Router Callback Chapter DDR in Which the Router Calls Back PC III. Configuration procedure DDR for Autodial DDR Using Dialer Map Cyclically Solution 1 Logical interface as backup interface DDR Using Dialer Map as BackupChapter Precautions for DDR Configuration Configuring Dialer-groupConfiguring Synchronous/Asynchronous Serial Port Using DDR Configuring Network Layer Address Apply PAP authentication Configuring PPP In Dialer Profile Configuration ModeChapter II. Apply Chap authentication Chapter Configuring PPP In Legacy DDR Configuration Mode Chapter II. Apply Chap authentication Chapter Whether modem is normal Troubleshooting DDRConfigure Dialer-list DDR Fault DiagnosisIII. Check whether dialer-group is configured IV. Check whether dialer-list is configured correctly Chapter DDR Fault Elimination Troubleshooting with DDR Debugging Information How to acquire DDR debugging informationInformation displayed at the calling end Information displayed at the call receiving end DDR link negotiation Down on interface Function Configuration of Modem ManagementModem Management Functions Provided by VRP1.4 Modem ScriptKey words Description Timeout secondsConfiguring Modem Script Configuring Modem ManagementModem Management Configuration Task List Configuring Modem Call-In and Call-Out AuthoritiesConfiguring Modem Answer Mode Executing Modem Script ManuallySpecifying the Event to Trigger Modem Script Managing Modem with Modem Script Typical Configuration of Modem ManagementNetworking requirements Configuration requirements Router Initialization with Initialization ScriptDirect Dial with Script Interactively Connect Cisco Router Through Modem VoIP Configuration VC IP Fax Configuration VoIP ConfigurationE1 Voice Configuration GK Client ConfigurationIphc Configuration Versatile Routing Platform Table of Contents VoIP Overview VoIP ConfigurationVoIP Principle Basic compositionII. H.323 protocol stack III. a typical telephone call processing by VoIP IP Voice Implementation over VRPSwitch Router Capacity channel IP Voice Feature over VRPChapter Configuring Dial-peer VoIP Configuration Task ListII. VoIP dial-peer configuration Pots dial-peer configurationIp precedence priority-number Configuring Dial TerminatorBy default, we do not configure the abbreviated dialing Configuring Abbreviated DialingConfiguring Voice Port By default, we do not configure the dial terminatorTable VC-1-6Configuring voice-port Configuring Global Number Match Policy Configuring the Recovery Method of Voice BoardBy default, please use the shortest number match policy By default, Watchdog is enabled VoIP Monitoring and MaintenanceKHT Rcvccactivecall Channel = Status = Chtransframe Configuring Router FXS Port for Interconnection Typical VoIP Configuration ExamplesIII. Configuration procedures Shanghai Chapter Figure VC-1-7RouterShenzhen FXO works in the Plar mode LAN III. Configuration description VoIP TroubleshootingOverview to IP Fax IP Fax ConfigurationConfiguring IP Fax Task List of IP Fax ConfigurationChecking If Configuring Fax to Use ECM Mode Configuring Fax RateGateway does not use ECM mode by default Mode is local-train mode local by default Configuring Fax Train ModeConfiguring Fax Local-train Threshold Value By default, the fax rate will be determined by voice modeFax protocol t38 hs-redundancy number Configuring Gateway Carrier Transmit Energy LevelFax protocol t38 ls-redundancy number No fax protocol t38 ls-redundancyMonitoring and Maintenance of IP Fax By default, T.38 protocol is usedBy default, rtp protocol is used Versatile Routing Platform IP Fax Configuration Typical Configuration of IP FaxChapter Usage of cE1/PRI Interface E1 Voice ConfigurationOverview of E1 Voice Configuration Function of E1 VoiceIII. Support single stage dialing and two-stage dialing Features of E1 VoiceSignaling modes supported II. Protocols and standards supportedIV. Integrated transmission of voice and data E1 Voice ConfigurationConfiguration Task List of E1 Voice Configuring Pots dial-peerNo incoming called-number Configuring VoIP dial-peerTable VC-3-1Configuration Commands of Pots dial-peer Incoming called-number numberTable VC-3-2Configuration Commands of VoIP dial-peer Configuring the Basic Parameters of E1 InterfaceTable VC-3-3Configuration Commands of E1 Interface Configuring Voice Port E1 InterfaceConfiguring E1 Voice R2 Signaling Configuring DS0 groupTable VC-3-4Configuration Commands of E1 Voice Port By default, the system has not created any DS0 group II. Configuring Related Parameters of R2 SignalingTable VC-3-6Configuration Commands of R2 Signaling Interface serial serial-no Configuring the Basic Parameters of Isdn PRI InterfacePri-group timeslots timeslots-list No pri-groupMonitoring and Maintenance of E1 Voice Configuring Voice Port Isdn PRI InterfaceMaintaining the MFC Channel and Circuit of the Specified TS II. show Command Related to E1 Voice Quidway# show voice-port R2 signalling call statistics III. debug Commands Related to E1 VoiceTypical Configuration Examples of E1 Voice Table VC-3-11debug Commands of E1 VoiceRouter Connected to PBX through E1 Voice Port Versatile Routing Platform Router Connected to PBX in Isdn PRI Mode Two-stage Dialing Configuration II. Netwoking diagram Transmission of Data and Voice Simultaneously Parameter configuration of Beijing-side routerFault Diagnosis and Troubleshooting of E1 Voice Configuring One Interface as H.323 Gateway Interface GK Client ConfigurationConfiguration of GK Client Configuration Task List of GK ClientActivating or Deactivate GK Client Function Configuring Gateway AliasConfigure the GK Server Name and Address By default, GK Client function is deactivatedConfiguring Tech-Prefix Configuring GK Interworking ModeBy default, there is not any tech-prefix Typical Configuration Examples of GK Client Be default, the GK interworking mode is cisco modeVersatile Routing Platform GK Client Configuration Chapter Fault Diagnosis and Troubleshooting of GK Client Overview of Iphc Iphc ConfigurationNo ip rtp compression-connections Iphc ConfigurationConfiguration Task List of Iphc Enable/disable RTP header compressionNo ip tcp header-compression Configure the Cisco-compatible RTP header compressionConfigure the deleting of udpchk field from UDP header By default, the udpchk field in UDP packet field is set toTable VC-5-6Monitoring and Maintenance of Iphc Monitoring and Maintenance of IphcExcellent Good Fair Poor How Are We DoingMistake Suggested Correction Line No

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