HP Routing Services -UX 11i v2 manual Conﬁguring the Ospf Protocol

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Conﬁguring gated

Conﬁguring the OSPF Protocol

•A point-to-point network is a network that joins a single pair of routers. An example of a point-to-point network is a 56-KB serial line.

The following sections describe each type of interface.

Multicast Interfaces On multicast networks, an OSPF router dynamically detects its neighbor routers through the OSPF Hello message. The following statements are deﬁned for a multicast interface:

•retransmitinterval is the number of seconds between retransmission of link states, database descriptions, and link state request packets. This value must exceed the expected round-trip delay between any two routers in the network. A sample value for a LAN is 5 seconds.

Default: None (you must specify a value)

Range: Integer between 0 – 65535

•transitdelay is the number of seconds to transmit a Link State Update Packet over this interface. This value must take into account the transmission and propagation delays for the interface. It must be greater than 0. A sample value for a LAN is 1 second.

Default: None (you must specify a value)

Range: Integer between 1 – 65535

•priority speciﬁes the priority of the router to be the designated router. You must conﬁgure this value only for interfaces to multi-access networks. This value speciﬁes the priority of the router to be the designated router. When two routers attached to a network attempt to be the designated router, the one with the higher router priority value takes precedence.

Default: None (you must specify a value for multi-access networks)

Range: 8-bit unsigned integer between 0 – 255. 0 means that the router is ineligible to become a designated router on the attached network.

•hellointerval speciﬁes the time interval (in seconds) for the transmission of OSPF Hello packets. Smaller intervals ensure that changes in network topology are detected faster. A sample value for an X.25 network is 30 seconds. A sample value for a LAN is 10 seconds.

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Contents Edition Manufacturing Part Number B2355-90777 AugustCopyright Notice WarrantyGovernment License Trademark Notices Page Contents Contents Index Contents Intended Audience HP-UX Release Name and Release IdentiﬁerDocument Organization Chapter Description What Is in This DocumentPublishing History HP-UX Internet Services Administrator’s Guide Related DocumentationMbone FAQ Typographical ConventionsHP Encourages Your Feedback BoldVersion of HP-UX that you are using Overview Overview Dvmrp Protocol Mrouted Routing DaemonMulticasting Overview Endpoint Dvmrp TunnelDvmrp Tunnel Multicast IP Multicast Addresses Class D IP Multicast Address FormatMulticast Groups Mrouted Routing Daemon Gated Routing Daemon AdvantagesDeciding When to Use gated Routing Protocols Comparison of RIP and Ospf Protocols RIP OspfRIP Ospf Gated Routing Daemon Gated Routing Daemon Chapter Conﬁguring mrouted Conﬁguring mrouted How to Conﬁgure mrouted Conﬁguration CommandsTunnel Multicast Network Example Conﬁguration How to Conﬁgure mrouted How to Conﬁgure mrouted Starting mrouted Verifying mrouted Operation Displaying mrouted Routing Tables HUP Displaying mrouted Routing Tables Multicast Routing Support Tools Mrinfo ToolMap-mbone Tool Netstat ToolMulticast Routing Support Tools Chapter Conﬁguring gated Conﬁguring gated Conﬁguration Overview Conﬁguring gated Protocol statements follow Converting the Conﬁguration File from 3.0 to Cp /etc/gated.conf /etc/gated.conf.30 Conﬁguring the RIP Protocol RIP Protocol StatementDefault Range 1 Conﬁguration Options Simple RIP Conﬁguration Example of Simple RIP ConﬁgurationEnd Systems RoutersExample of a Large RIP Conﬁguration RIP RouterMajor Router Cluster Node Isolated NodeRoot Server Single NodeCluster or Root Server Node Controlling RIP Trafﬁc Major RouterConﬁguring the RIP Protocol Conﬁguring the Ospf Protocol Network Router Area Areas Deﬁned in an Autonomous SystemArea Conﬁguring the Ospf Protocol Planning Your Ospf Conﬁguration Enabling Ospf Area To Network a 193.2.1.33 Border Router To Network B Deﬁning AreasArea Border Router Conﬁguration Example Networks Statement Network Conﬁguration ExampleInterface Statement Conﬁguring the Ospf Protocol Default None Multicast Router Interface Example Router 193.2.1.35 NetworkRouter Network 193.2.1.35 193.2.1.33 Internet 193.2.1.46 Range 0Non-Broadcast Router Interface Example Hellointerval value must be the same for all Ospf routers Conﬁguring the Ospf Protocol Stub Areas Point-to-Point Router Interface ExampleRouter 193.2.1.1 193.2.1.2 Area Router 193.2.1.20 193.2.1.17 193.2.1.18 193.2.1.19Deﬁning Backbones Area 15.13.115.156 Router a Router BAuthentication Authkey travis Authkey pepeCost Cost LAN 1 LAN 2AS External Routes AS Boundary Routers Only Default Conﬁguring the Ospf Protocol Sample Ospf Conﬁguration Internal Router Non-Stub AreaArea Border Router Internal Router Stub Area Accessing the Ospf MIB Conﬁguring RDP RDP ServerRDP Client Server RDP ClientCustomizing Routes Specifying a Default RouterInstalling Static Routes Setting Interface States Specifying Tracing Options Files Option EffectRoute Type Preference Default Preference Values of RoutesSpecifying Route Preference BGP Specifying Route Preference Export Statement Importing and Exporting RoutesImport Statement Examples of import and export Statements Flag Effect Command Line Options for gatedStarting gated Verifying That gated Is Running 100Tracing gated Activity Troubleshooting gatedChecking for Syntax Errors in the Conﬁguration File Operational User Interface for gated gdc 102Ospfmonitor Tool Gated Routing TableRipquery Tool 104 Common ProblemsProblem 1 gated does not act as expected Chapter 105 Problem 2 gated deletes routes from the routing table 106Problem 3 gated adds routes that appear to be incorrect Problem 4 gated does not add routes that you think it must 108Index 109110 111 112 TOS 113