Configuring GRE, GRE Configuration Task List | Huawei v200r001

User Manual - Configuration Guide (Volume 3)	Chapter 3
Versatile Routing Platform	Configuration of GRE

Router

r

Router

r

Tunnel	Router
	r
Router	Router
Router
r	r
r

Figure VPN-3-4Enlarge network operating range

When using RIP, if the hop count between two terminals in the above figure is more than 15, the two terminals can not communicate with each other. When the tunnel is used in the network, a part of hops can be hidden, enlarging the operating range of the network.

3)Connect some discontinuous sub-networks to establish VPN.

novell	RouterA	Router
novell

	group 1	group2
	group 1	RouterB
	Router	RouterB
	Tunnel

Figure VPN-3-5Tunnel connects discontinuous sub-networks

novell

The two sub-networks group1 and group2 running Novell IPX protocol are in different cities. With the tunnel available, the trans-WAN Virtual Private Network can be established.

In addition, GRE also supports the users to select and record identification key word of tunnel interface, supports the check of encapsulated message, and supports the use of synchronous serial numbers to ensure channel safety and correctness of transmission data.

Because of encapsulation and de-encapsulation on GRE receiving side and transmitting side and data volume increase caused by encapsulation, GRE will decrease the forwarding rate of router data to some extent.

3.2 Configuring GRE

3.2.1 GRE Configuration Task List

GRE configuration task list is as follows:

zCreate virtual tunnel interface.

zSet the source address of tunnel interface.

zSet the destination address of tunnel interface.

zSet the network address of tunnel interface.

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Huawei v200r001 user manual Configuring GRE, GRE Configuration Task List

Contents

Huawei V200R001 Manual Version T2-080168-20011213-C-1.5 BOM31010868 Contents About This Manual Key 1 + Key Format Description KeyBracket, e.g. Enter , Tab , Backspace , or a Key 1, Key Symbol Action Description Security Configuration SC Huawei Configuration of IKE II. IKE features IKE Configuration Task List Creating IKE Security Policy Select Authentication Algorithm No IKE security policy is created by defaultSelect Encryption Algorithm Set Pre-shared Key Select Hashing AlgorithmSelect DH Group ID Set Lifetime of IKE Association SA Show IKE SA parameter Quidway# show crypto ike sa Networking requirements Show IKE security policy Quidway# show crypto ike policy II. Networking diagram III. Configuration procedure Problem 1 Invalid user ID information VPN Configuration VPN Table of Contents VPN features VPN Overview According to operation mode Classification of IP VPN II. According to the layer where the tunnel is III. According to service purpose IV. According to networking model Overview of Vpdn Configuration of L2TPBrief Introduction to L2TP Protocol Brief induction to Vpdn 2 L2TP Protocol III. Method to realize VpdnTunnel and session II. Control message and data message III. Two typical L2TP tunnel modes IV. Call setup flow of L2TP tunnel Call setup flow of L2TP channel is shown in the following Features of L2TP protocol Figure VPN-2-3Call setup flow of L2TP channel Configuring L2TP 1 L2TP Configuration Task ListConfiguring at LAC Side Disable Vpdn to run by default II. Create Vpdn group IV. Set the connection request to originate L2TP channel Configuring at LNS SideDisable Vpdn running by default Table VPN-2-4L2TP attribute table Accept dialin l2tp virtual-template virtual III. Create/delete virtual interface templateNo vpdn group group-number No accept dialin Optional configuration III. Force local end to perform Chap authenticationSet local name of channel IV. LNS forces LCP to renegotiate Local end does not perform Chap authentication by defaultLCP does not renegotiate by default Set domain name delimiter and search sequence VII. Enable/disable hiding AV pairs Disable hiding AV pairs by default Monitoring and Maintenance of L2TP VIII. Force to disconnect tunnel NAS-Initialized VPN Typical Configuration of L2TPShow l2tp session command domain Networking requirement III. Configuration procedure Figure VPN-2-5Networking diagram of Client-Initialized VPN Client-Initialized VPN Single User Interconnects Headquarters via Router Chapter Fault Diagnosis of L2TP Configuration of GRE Brief Introduction to GRE ProtocolBrief introduction to the protocol II. Applicable range Figure VPN-3-2Format of transmission message in the tunnel Configuring GRE GRE Configuration Task List Setting the Source Address of Tunnel Interface Setting the Destination Address of Tunnel InterfaceCreating Virtual Tunnel Interface Setting the Identification Key Word of Tunnel Interface Setting the Network Address of Tunnel InterfaceSetting the Encapsulation Mode of Tunnel Interface Message Setting Tunnel Interface to Check with Check Sum Monitoring and Maintenance of GRE Disable tunnel interface to check with check sum by defaultShow interface tunnel tunnel-number Typical Configuration of GRE Figure VPN-3-6Networking diagram of GRE application Chapter Troubleshooting GRE Reliability Configuration LC Configuration of Backup Center Configuration of Hsrp Configuring the Backup Center Configuration of Backup CenterBackup Center Overview Configuration Task List Backup 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 Backup Between Interfaces Monitoring and Maintaining of Backup CenterTypical Configuration of Backup Center An Example of Multiple Backup Interfaces Chapter Chapter Configuration of Hsrp Hsrp Overview Configuring Hsrp Starting Hsrp Function Setting Hsrp Authorization Word Setting Router’s Priority in Hsrp Hot Standby GroupSetting Router’s Preemption Mode in Hsrp Standby Group Standby group-number preempt Standby group-numberauthentication string Setting Hsrp TimerTable LC-2-4Set Hsrp authorization word Monitoring the Specified Interface Using Actual Interface MAC Address Modifying Virtual MAC AddressTable LC-2-6Monitor the specified interface Monitoring and Maintaining Hsrp Typical Configurations of HsrpAn example for single hot standby group configuration Show relevant Hsrp information Quidway# show standby 202.38.160.111 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 II.Integrated Service Three service types of QoSBest-effort Service QoS Overview III. Differentiated Service Functions of QoS Chapter Traffic Classification and Policing II. CAR Committed Access RateTraffic Classification and Policing Introduction to Traffic Classification Features of Token Bucket Introduction to Traffic Policing Introduction to CAR II.Traffic Measuring with Token BucketIII Complicacy Evaluation No CAR rule is specified by default CAR ConfigurationCAR Configuration Task List Specify CAR rules Apply the CAR Rule on the Interface Monitoring and Maintenance of CARTable QC-2-3Monitoring and maintenance of CAR Show CAR statistics Quidway# show car interface serial Applying CAR Rules to All Packets CAR Configuration ExampleII.Configuration Requirements III. Configuration Apply CAR Rules to Packets Which is Matched the ACL Configure CAR Rules Based on the Priority Level Configure CAR Rules Based on the MAC AddressII.Networking diagram Chapter About Congestion Congestion ManagementCongestion and Congestion Management Congestion Management Policy II. PQ Priority Queuing IV. WFQ Weighted Fair QueuingFifo Queuing III. CQ Custom Queuing Selecting Congestion Management Policy Working Principle of Congestion Management Policy No. Advantages Disadvantages Queue Fifo III. CQ Configuration of Congestion Management Configuring PQPQ Configuration task list II. Configuring priority queue Priority-list list-number interface type number high medium Normal low III. Applying priority queue to the interface Table QC-3-7Configuration of queue length of priority queueInterface adopts Fifo queuing by default IV. Maintaining and monitoring the priority queue Configuring CQ CQ configuration task listII. Configuring the custom queue Operation Command Configure the default custom queue No custom-list list-number interface type number Custom-list list-number queue queue-number byte-count III. Applying custom queue to the interfaceNo custom-list list-number queue queue-number limit No custom-list list-number queue queue-number byte-count II. Configuring the weighted fair queue Configuring WFQWFQ configuration task list III. Maintenance and monitoring of the weighted fair queue Configuration 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 Preparing DDR Configuration Figure DC-1-1DDR configuration preparation flow Configuration tasks of Legacy DDR include Configuring DDRConfiguring Legacy DDR II. Configure an interface to send calls Dialer string dial-string isdn-address Dialer rotary-group number III. Configure an interface to receive calls Figure DC-1-2Schematic diagram of Dialer Rotary Group IV. Configure an interface to send and receive calls Versatile Routing Platform DDR Configuration Set the attribute parameters of Legacy DDR Table DC-1-13Set the idle time of busy interface Access-list access-list-number deny permit Table DC-1-16Set access control of the dial interfaceAccess-list access-list-numberdeny permit Permit deny Configuring 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 Significance of callback Configuring CallbackBind physical interfaces for a dialer pool II. Terms and abbreviations Or dialer caller remote-number IV. Configure Isdn calling line identification callbackDialer caller remote-number callback Interface dialer Configure PPP callback User name callback-dialstring telephone-number Chapter Table DC-1-28Client end using Legacy DDR to configure PPP Configuring DDR Special Functions Configure Isdn dedicated line II. 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 Point-to-Multipoint DDR 8810063 Chapter 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 2.2 Flow Control of Dialer Profile MP over Dialer Profile-CaseRouterA RouterB BRI0 661012 Chapter Figure DC-1-11Networking diagram of DDR Case Channels for Dial-up and Connection to the Remote End Case Chapter 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 DDR Using Dialer Map as Backup Solution 1 Logical interface as backup interface Chapter Precautions for DDR Configuration Configuring Dialer-groupConfiguring Synchronous/Asynchronous Serial Port Using DDR Configuring Network Layer Address Configuring PPP In Dialer Profile Configuration Mode Apply PAP authentication Chapter II. Apply Chap authentication Chapter Configuring PPP In Legacy DDR Configuration Mode Chapter II. Apply Chap authentication Chapter DDR Fault Diagnosis Troubleshooting DDRConfigure Dialer-list Whether modem is normal III. 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 Modem Script Configuration of Modem ManagementModem Management Functions Provided by VRP1.4 Function Timeout seconds Key words Description Configuring Modem Call-In and Call-Out Authorities Configuring Modem ManagementModem Management Configuration Task List Configuring Modem Script Configuring Modem Answer Mode Executing Modem Script ManuallySpecifying the Event to Trigger Modem Script Typical Configuration of Modem Management Managing Modem with Modem Script Networking requirements Configuration requirements Router Initialization with Initialization ScriptDirect Dial with Script Interactively Connect Cisco Router Through Modem VoIP Configuration VC VoIP Configuration IP Fax Configuration E1 Voice Configuration GK Client ConfigurationIphc Configuration Versatile Routing Platform Table of Contents VoIP Configuration VoIP Overview VoIP Principle Basic compositionII. H.323 protocol stack IP Voice Implementation over VRP III. a typical telephone call processing by VoIP IP Voice Feature over VRP Switch Router Capacity channel Chapter VoIP Configuration Task List Configuring Dial-peer Pots dial-peer configuration II. VoIP dial-peer configuration Configuring Dial Terminator Ip precedence priority-number By default, we do not configure the dial terminator Configuring Abbreviated DialingConfiguring Voice Port By default, we do not configure the abbreviated dialing Table 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 VoIP Monitoring and Maintenance By default, Watchdog is enabled KHT Rcvccactivecall Channel = Status = Chtransframe Typical VoIP Configuration Examples Configuring Router FXS Port for Interconnection III. Configuration procedures Shanghai Chapter Figure VC-1-7RouterShenzhen FXO works in the Plar mode LAN VoIP Troubleshooting III. Configuration description Task List of IP Fax Configuration IP Fax ConfigurationConfiguring IP Fax Overview to IP Fax Checking If Configuring Fax to Use ECM Mode Configuring Fax RateGateway does not use ECM mode by default By default, the fax rate will be determined by voice mode Configuring Fax Train ModeConfiguring Fax Local-train Threshold Value Mode is local-train mode local by default No fax protocol t38 ls-redundancy Configuring Gateway Carrier Transmit Energy LevelFax protocol t38 ls-redundancy number Fax protocol t38 hs-redundancy number Monitoring and Maintenance of IP Fax By default, T.38 protocol is usedBy default, rtp protocol is used Typical Configuration of IP Fax Versatile Routing Platform IP Fax Configuration Chapter Function of E1 Voice E1 Voice ConfigurationOverview of E1 Voice Configuration Usage of cE1/PRI Interface II. Protocols and standards supported Features of E1 VoiceSignaling modes supported III. Support single stage dialing and two-stage dialing Configuring Pots dial-peer E1 Voice ConfigurationConfiguration Task List of E1 Voice IV. Integrated transmission of voice and data Incoming called-number number Configuring VoIP dial-peerTable VC-3-1Configuration Commands of Pots dial-peer No incoming called-number Configuring the Basic Parameters of E1 Interface Table VC-3-2Configuration Commands of VoIP dial-peer Configuring Voice Port E1 Interface Table VC-3-3Configuration Commands of E1 Interface Configuring E1 Voice R2 Signaling Configuring DS0 groupTable VC-3-4Configuration Commands of E1 Voice Port II. Configuring Related Parameters of R2 Signaling By default, the system has not created any DS0 group Table VC-3-6Configuration Commands of R2 Signaling No pri-group Configuring the Basic Parameters of Isdn PRI InterfacePri-group timeslots timeslots-list Interface serial serial-no Monitoring 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 III. debug Commands Related to E1 Voice R2 signalling call statistics Typical 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 Parameter configuration of Beijing-side router Transmission of Data and Voice Simultaneously Fault Diagnosis and Troubleshooting of E1 Voice Configuration Task List of GK Client GK Client ConfigurationConfiguration of GK Client Configuring One Interface as H.323 Gateway Interface By default, GK Client function is deactivated Configuring Gateway AliasConfigure the GK Server Name and Address Activating or Deactivate GK Client Function Configuring 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 Iphc Configuration Overview of Iphc Enable/disable RTP header compression Iphc ConfigurationConfiguration Task List of Iphc No ip rtp compression-connections By default, the udpchk field in UDP packet field is set to Configure the Cisco-compatible RTP header compressionConfigure the deleting of udpchk field from UDP header No ip tcp header-compression Monitoring and Maintenance of Iphc Table VC-5-6Monitoring and Maintenance of Iphc How Are We Doing Excellent Good Fair Poor Mistake Suggested Correction Line No