Avaya Configuring IP, ARP, RIP, and OSPF Services Manuel d'utilisateur

BayRS Version 14.00Part No. 308627-14.00 Rev 00September 19994401 Great America ParkwaySanta Clara, CA 95054Configuring IP, ARP, RARP, RIP, and OSPF

x308627-14.00 Rev 00Defining an Area ...6-40S

Configuring IP, ARP, RARP, RIP, and OSPF Services3-38308627-14.00 Rev 00Configuring an SMDS AddressBy default, if the interface is connected to an SMD

Configuring and Customizing IP308627-14.00 Rev 003-39 Configuring a WAN Address for a Frame Relay NetworkIf an interface is connected to a frame relay

Configuring IP, ARP, RARP, RIP, and OSPF Services3-40308627-14.00 Rev 00To configure broadcast and multicast addresses to be used by the frame relay s

Configuring and Customizing IP308627-14.00 Rev 003-41 When IP flushes a route from the routing table, it also removes the route from the forwarding ta

Configuring IP, ARP, RARP, RIP, and OSPF Services3-42308627-14.00 Rev 00Using Site ManagerTo set the maximum number of entries allowed in the forwardi

Configuring and Customizing IP308627-14.00 Rev 003-43 • Specify (for a server) the duration for which the registration is valid.Using the BCCTo set pa

Configuring IP, ARP, RARP, RIP, and OSPF Services3-44308627-14.00 Rev 00Using Site ManagerTo set parameters for an ATM logical IP subnet, complete the

Configuring and Customizing IP308627-14.00 Rev 003-45 Deleting IP from an InterfaceYou can delete IP from an interface using the BCC or Site Manager.U

Configuring IP, ARP, RARP, RIP, and OSPF Services3-46308627-14.00 Rev 00Configuring an Adjacent Host AddressAn adjacent host is a device on a locally

Configuring and Customizing IP308627-14.00 Rev 003-47 Table 3-4. BCC Adjacent Host ParametersParameter Value/Default Descriptionstate enabled (default

308627-14.00 Rev 00xiAppendix B Routing Policy ParametersCommon Accept Policy Parameters ...

Configuring IP, ARP, RARP, RIP, and OSPF Services3-48308627-14.00 Rev 00Using Site ManagerTo associate the IP address of an adjacent host with its phy

Configuring and Customizing IP308627-14.00 Rev 003-49 Defining a Static RouteA static route is a manually configured route that specifies the transmis

Configuring IP, ARP, RARP, RIP, and OSPF Services3-50308627-14.00 Rev 00Using the BCCTo define a static route, navigate to the global IP prompt (for e

Configuring and Customizing IP308627-14.00 Rev 003-51 For example, the following command line configures a static route to destination 3.2.4.5/255.255

Configuring IP, ARP, RARP, RIP, and OSPF Services3-52308627-14.00 Rev 00Using Site ManagerTo define a static route, complete the following tasks:cost

Configuring and Customizing IP308627-14.00 Rev 003-53 Defining a Static Default RouteIf IP receives a data packet with a destination address that it i

Configuring IP, ARP, RARP, RIP, and OSPF Services3-54308627-14.00 Rev 00If the router loses connectivity to network 192.32.3.0, one of the networks in

Configuring and Customizing IP308627-14.00 Rev 003-55 Enabling and Disabling Router DiscoveryYou can use the BCC or Site Manager to enable and disable

Configuring IP, ARP, RARP, RIP, and OSPF Services3-56308627-14.00 Rev 00Choosing a Broadcast TypeYou can use the BCC or Site Manager to specify the ty

Configuring and Customizing IP308627-14.00 Rev 003-57 Specifying the Time Interval Between AdvertisementsYou can use the BCC or Site Manager to specif

Configuring IP, ARP, RARP, RIP, and OSPF Services3-58308627-14.00 Rev 00Using Site ManagerTo specify the minimum and maximum number of seconds between

Configuring and Customizing IP308627-14.00 Rev 003-59 Using Site ManagerTo specify the maximum length of time that advertised addresses are considered

Configuring IP, ARP, RARP, RIP, and OSPF Services3-60308627-14.00 Rev 00Using Site ManagerTo specify the preference value of the address as a default

308627-14.00 Rev 004-1 Chapter 4Customizing ARP and RARP ServicesYou can customize the Address Resolution Protocol (ARP) and Reverse Address Resolutio

Configuring IP, ARP, RARP, RIP, and OSPF Services4-2308627-14.00 Rev 00Customizing ARPYou can customize the Address Resolution Protocol (ARP) by setti

Customizing ARP and RARP Services308627-14.00 Rev 004-3 Customizing Global ARPYou can use the BCC or Site Manager to do the following:• Control how AR

Configuring IP, ARP, RARP, RIP, and OSPF Services4-4308627-14.00 Rev 00Using Site ManagerTo customize global ARP, complete the following tasks:Site Ma

Customizing ARP and RARP Services308627-14.00 Rev 004-5 Selecting an Address Resolution Scheme for an IP InterfaceIn addition to ARP, IP supports Inve

Configuring IP, ARP, RARP, RIP, and OSPF Services4-6308627-14.00 Rev 00On interfaces configured for a token ring network, the router can send ARP requ

Customizing ARP and RARP Services308627-14.00 Rev 004-7 Selecting an Encapsulation Option for ARP and ProbeIf you select ARP, Probe, or ARP/Probe, you

308627-14.00 Rev 00xiiiFiguresFigure 1-1. Network and Host Portions of IP Addresses ...1-3Figure 1-2. Superne

Configuring IP, ARP, RARP, RIP, and OSPF Services4-8308627-14.00 Rev 00Enabling Proxy ARP on an InterfaceProxy ARP allows a router to answer a local A

Customizing ARP and RARP Services308627-14.00 Rev 004-9 Host B wants to talk to host C, so host B broadcasts an ARP request, which asks IP address 140

Configuring IP, ARP, RARP, RIP, and OSPF Services4-10308627-14.00 Rev 00Using Site ManagerTo enable or disable Proxy ARP, complete the following tasks

Customizing ARP and RARP Services308627-14.00 Rev 004-11 Using the BCCTo enable or disable the ARP cache timeout feature, navigate to the IP interface

Configuring IP, ARP, RARP, RIP, and OSPF Services4-12308627-14.00 Rev 00Customizing RARPYou can customize the Reverse Address Resolution Protocol (RAR

Customizing ARP and RARP Services308627-14.00 Rev 004-13 Disabling and Enabling RARP on an InterfaceYou can disable or reenable individual RARP interf

Configuring IP, ARP, RARP, RIP, and OSPF Services4-14308627-14.00 Rev 00To specify a client’s MAC address and its IP address, complete the following t

Customizing ARP and RARP Services308627-14.00 Rev 004-15 Deleting RARP GloballyTo globally delete RARP from all router interfaces on which it is confi

308627-14.00 Rev 005-1 Chapter 5Customizing RIP ServicesYou customize the Routing Information Protocol (RIP) by setting RIP parameters as described un

Configuring IP, ARP, RARP, RIP, and OSPF Services5-2308627-14.00 Rev 00Setting the RIP DiameterThe RIP diameter is a hop count that RIP uses to denote

Customizing RIP Services308627-14.00 Rev 005-3 Customizing a RIP InterfaceWhen you add RIP to an IP interface, RIP is enabled with default values for

Configuring IP, ARP, RARP, RIP, and OSPF Services5-4308627-14.00 Rev 00For example, the following command disables RIP on IP interface 2.2.2.2:rip/2.2

Customizing RIP Services308627-14.00 Rev 005-5 In both Version 2 modes, RIP checks for a password on all received updates (see “Supplying a Default Ro

Configuring IP, ARP, RARP, RIP, and OSPF Services5-6308627-14.00 Rev 00Authenticating the Password on a Version 2 UpdateBy default, RIP running in Ver

Customizing RIP Services308627-14.00 Rev 005-7 To specify a password, enter:authentication <password>For example, the following command sequence

Configuring IP, ARP, RARP, RIP, and OSPF Services5-8308627-14.00 Rev 00Supplying RIP Updates on an InterfaceBy default, RIP supplies RIP updates to ne

Customizing RIP Services308627-14.00 Rev 005-9 Specifying the Update ModeRIP can issue routing updates in the following modes:• Poisoned reverse (the

Configuring IP, ARP, RARP, RIP, and OSPF Services5-10308627-14.00 Rev 00Using the BCCTo specify the RIP update mode, navigate to a RIP interface promp

Customizing RIP Services308627-14.00 Rev 005-11 Sending Triggered UpdatesRIP generates full routing updates at regular intervals. You can also configu

308627-14.00 Rev 00xvTablesTable 1-1. Network Classes and IP Addresses ...1-2Table 1-2. Subnet M

Configuring IP, ARP, RARP, RIP, and OSPF Services5-12308627-14.00 Rev 00Using Site ManagerTo enable or disable triggered updates, complete the followi

Customizing RIP Services308627-14.00 Rev 005-13 Using the BCCTo specify a time-to-live value, navigate to a RIP interface prompt (for example, box; et

Configuring IP, ARP, RARP, RIP, and OSPF Services5-14308627-14.00 Rev 00Receiving RIP Updates on an InterfaceBy default, RIP listens for routing updat

Customizing RIP Services308627-14.00 Rev 005-15 Using Site ManagerTo specify whether RIP listens for routing updates, complete the following tasks:Sup

Configuring IP, ARP, RARP, RIP, and OSPF Services5-16308627-14.00 Rev 00Using the BCCTo specify whether an interface can supply or generate a default

Customizing RIP Services308627-14.00 Rev 005-17 Listening for a Default RouteBy default, RIP ignores inbound advertisements of a default route (0.0.0.

Configuring IP, ARP, RARP, RIP, and OSPF Services5-18308627-14.00 Rev 00Configuring a RIP Interface for Dial-Optimized RoutingDial-optimized routing i

Customizing RIP Services308627-14.00 Rev 005-19 Using the BCCTo specify the frequency at which RIP generates a full update, navigate to a RIP interfac

Configuring IP, ARP, RARP, RIP, and OSPF Services5-20308627-14.00 Rev 00Specifying a Timeout PeriodBy default, RIP waits 90 seconds for an update from

Customizing RIP Services308627-14.00 Rev 005-21 Specifying a Holddown PeriodWhen RIP determines that a network is unreachable, RIP continues to advert

xvi308627-14.00 Rev 00Table E-2. Area Border Router 2 ... E-4Table E-3. Ar

Configuring IP, ARP, RARP, RIP, and OSPF Services5-22308627-14.00 Rev 00Using Site ManagerTo specify the holddown period, complete the following tasks

Customizing RIP Services308627-14.00 Rev 005-23 Deleting RIP from an InterfaceTo delete RIP from an interface on which it is currently configured, pro

Configuring IP, ARP, RARP, RIP, and OSPF Services5-24308627-14.00 Rev 00Configuring RIP Accept and Announce PoliciesRIP accept policies and announce p

Customizing RIP Services308627-14.00 Rev 005-25 Defining a RIP Accept PolicyTo define a new RIP accept policy, you must do the following:• Supply a na

Configuring IP, ARP, RARP, RIP, and OSPF Services5-26308627-14.00 Rev 00For example, the following command sets the state to disabled for RIP accept p

Customizing RIP Services308627-14.00 Rev 005-27 Using Site ManagerTo create an accept policy, complete the following tasks:Site Manager ProcedureYou d

Configuring IP, ARP, RARP, RIP, and OSPF Services5-28308627-14.00 Rev 00Supplying Modification Values for a RIP Accept PolicyYou can use the BCC or Si

Customizing RIP Services308627-14.00 Rev 005-29 Using Site ManagerTo specify a modification value to an update that matches a policy, complete the fol

Configuring IP, ARP, RARP, RIP, and OSPF Services5-30308627-14.00 Rev 00For example, the following command specifies RIP interface 2.2.3.3 on this rou

Customizing RIP Services308627-14.00 Rev 005-31 Defining a RIP Announce PolicyTo define a new RIP announce policy, you must do the following:• Supply

308627-14.00 Rev 00xvii PrefaceThis guide describes Internet Protocol (IP) services and what you do to start and customize IP services on a Nortel Net

Configuring IP, ARP, RARP, RIP, and OSPF Services5-32308627-14.00 Rev 00To customize the default values for the policy, enter:<parameter> <va

Customizing RIP Services308627-14.00 Rev 005-33 Supplying Modification Values for a RIP Announce PolicyYou can use the BCC or Site Manager to supply a

Configuring IP, ARP, RARP, RIP, and OSPF Services5-34308627-14.00 Rev 00For example, the following command sequence specifies an override metric of 5

Customizing RIP Services308627-14.00 Rev 005-35 Specifying Matching Criteria for a RIP Announce PolicyYou can use the BCC or Site Manager to specify m

Configuring IP, ARP, RARP, RIP, and OSPF Services5-36308627-14.00 Rev 00ospf-type any (default)type1type2externalinternalSpecifies which types of OSPF

Customizing RIP Services308627-14.00 Rev 005-37 egp-gateway* List of IP addressesSpecifies the IP address of one or more EGP gateways. This policy app

Configuring IP, ARP, RARP, RIP, and OSPF Services5-38308627-14.00 Rev 00Using Site ManagerTo specify matching criteria for a RIP announce policy, comp

Customizing RIP Services308627-14.00 Rev 005-39 7. Set the following parameters:•Networks•Route Source •External Route Source •Advertise •From RIP Gat

308627-14.00 Rev 006-1 Chapter 6Customizing OSPF ServicesYou customize OSPF by setting OSPF parameters as described under the following topics:Topic P

Configuring IP, ARP, RARP, RIP, and OSPF Servicesxviii308627-14.00 Rev 00Text ConventionsThis guide uses the following text conventions:angle brackets

Configuring IP, ARP, RARP, RIP, and OSPF Services6-2308627-14.00 Rev 00Customizing OSPF Global ParametersOSPF global parameters affect the way OSPF ru

Customizing OSPF Services308627-14.00 Rev 006-3 Enabling and Disabling OSPF on the RouterWhen you start OSPF on the router, OSPF is automatically enab

Configuring IP, ARP, RARP, RIP, and OSPF Services6-4308627-14.00 Rev 00Supplying an OSPF Router IDEach router configured with OSPF has an OSPF router

Customizing OSPF Services308627-14.00 Rev 006-5 Configuring the Soloist and Backup Soloist on a SlotThe OSPF protocol is implemented as a soloist -- t

Configuring IP, ARP, RARP, RIP, and OSPF Services6-6308627-14.00 Rev 00To maintain a copy of the LSDB for the backup soloist, navigate to the global O

Customizing OSPF Services308627-14.00 Rev 006-7 Enabling the Boundary FunctionAn OSPF boundary router does the following:1. Receives information about

Configuring IP, ARP, RARP, RIP, and OSPF Services6-8308627-14.00 Rev 00Configuring the Metric Type for an ASE AdvertisementEach ASE that a boundary ro

Customizing OSPF Services308627-14.00 Rev 006-9 Figure 6-1. OSPF ASE RoutesBy default, an OSPF boundary router generates a type 2 metric for BGP, EGP,

Configuring IP, ARP, RARP, RIP, and OSPF Services6-10308627-14.00 Rev 00Using the BCC or Site Manager, you can configure a boundary router to use the

Customizing OSPF Services308627-14.00 Rev 006-11 Choosing a Tag Generation Method for an ASE AdvertisementAn OSPF AS external route advertisement incl

Preface308627-14.00 Rev 00xix AcronymsThis guide uses the following acronyms:italic text Indicates file and directory names, new terms, book titles, a

Configuring IP, ARP, RARP, RIP, and OSPF Services6-12308627-14.00 Rev 00Figure 6-2. AS External Route TagYou can use the BCC or Site Manager to choose

Customizing OSPF Services308627-14.00 Rev 006-13 Using the BCCTo set the tag generation method for ASE advertisements, navigate to the global OSPF pro

Configuring IP, ARP, RARP, RIP, and OSPF Services6-14308627-14.00 Rev 00Setting the Holddown TimerThe holddown timer controls how often OSPF calculate

Customizing OSPF Services308627-14.00 Rev 006-15 Configuring Message LoggingOSPF maintains a primary log and a backup log for OSPF messages. By defaul

Configuring IP, ARP, RARP, RIP, and OSPF Services6-16308627-14.00 Rev 00Using the BCCTo specify the messages that OSPF writes to the primary log, navi

Customizing OSPF Services308627-14.00 Rev 006-17 Configuring External Route PreferenceBy default, when OSPF receives multiple AS external LSAs for the

Configuring IP, ARP, RARP, RIP, and OSPF Services6-18308627-14.00 Rev 00Customizing OSPF on an IP InterfaceWhen you add OSPF to an IP interface, OSPF

Customizing OSPF Services308627-14.00 Rev 006-19 Enabling and Disabling OSPF on an InterfaceWhen you add OSPF to an IP interface, OSPF is automaticall

Configuring IP, ARP, RARP, RIP, and OSPF Services6-20308627-14.00 Rev 00Configuring an Area IDIn an AS that contains multiple areas, each OSPF interfa

Customizing OSPF Services308627-14.00 Rev 006-21 Specifying the Interface TypeOSPF supports the following types of interfaces: • Broadcast. An interfa

ii308627-14.00 Rev 00 Copyright © 1999 Nortel NetworksAll rights reserved. Printed in the USA. September 1999.The information in this document is subj

Configuring IP, ARP, RARP, RIP, and OSPF Servicesxx308627-14.00 Rev 00BGP Border Gateway ProtocolBR border routerCIDR classless interdomain routingDVM

Configuring IP, ARP, RARP, RIP, and OSPF Services6-22308627-14.00 Rev 00By default, OSPF assumes that the interface is attached to a broadcast network

Customizing OSPF Services308627-14.00 Rev 006-23 Specifying Router Priority for a Multiaccess NetworkThe router priority value is used in multiaccess

Configuring IP, ARP, RARP, RIP, and OSPF Services6-24308627-14.00 Rev 00For example, the following command assigns a priority of 2 to interface 2.2.2.

Customizing OSPF Services308627-14.00 Rev 006-25 Using Site ManagerTo change the transit delay value, complete the following tasks:Setting the Retrans

Configuring IP, ARP, RARP, RIP, and OSPF Services6-26308627-14.00 Rev 00You can use the BCC or Site Manager to specify a retransmit interval.Using the

Customizing OSPF Services308627-14.00 Rev 006-27 Setting the Hello IntervalThe Hello interval specifies how often the router sends Hello messages on t

Configuring IP, ARP, RARP, RIP, and OSPF Services6-28308627-14.00 Rev 00You can use the BCC or Site Manager to specify a Hello interval.Using the BCCT

Customizing OSPF Services308627-14.00 Rev 006-29 Setting the Dead IntervalThe dead interval is the number of seconds that OSPF waits to receive a Hell

Configuring IP, ARP, RARP, RIP, and OSPF Services6-30308627-14.00 Rev 00Using Site ManagerTo specify a dead interval, complete the following tasks:Set

Customizing OSPF Services308627-14.00 Rev 006-31 For example, the following command sets the poll interval to 90 seconds on IP interface 2.2.2.2:ospf/

Preface308627-14.00 Rev 00xxi Related PublicationsFor more information about IP services, refer to the following publications:• Reference for BCC IP s

Configuring IP, ARP, RARP, RIP, and OSPF Services6-32308627-14.00 Rev 00Figure 6-3. Example of Using Configurable Cost MetricsTable 6-6 lists the sugg

Customizing OSPF Services308627-14.00 Rev 006-33 By default, each OSPF interface has a cost of 1. You can use the BCC or Site Manager to specify a met

Configuring IP, ARP, RARP, RIP, and OSPF Services6-34308627-14.00 Rev 00Specifying the MTU SizeOSPF recognizes a maximum transmission unit (MTU) size

Customizing OSPF Services308627-14.00 Rev 006-35 Using Site ManagerTo specify the MTU size, complete the following tasks:Specifying the MTU Mismatch D

Configuring IP, ARP, RARP, RIP, and OSPF Services6-36308627-14.00 Rev 00For example, the following command disables the MTU mismatch detect option on

Customizing OSPF Services308627-14.00 Rev 006-37 Using the BCCTo configure a neighbor on an NBMA interface, navigate to an OSPF interface prompt (for

Configuring IP, ARP, RARP, RIP, and OSPF Services6-38308627-14.00 Rev 00Deleting OSPF from an IP InterfaceTo delete OSPF from an interface on which it

Customizing OSPF Services308627-14.00 Rev 006-39 Using Site ManagerTo delete OSPF from an interface, complete the following tasks:Site Manager Procedu

Configuring IP, ARP, RARP, RIP, and OSPF Services6-40308627-14.00 Rev 00Defining an AreaYou define an OSPF area by setting parameters as described und

Customizing OSPF Services308627-14.00 Rev 006-41 For example, the following command sequence creates OSPF area 0.0.0.0 and displays the default area a

Configuring IP, ARP, RARP, RIP, and OSPF Servicesxxii308627-14.00 Rev 00You can purchase selected documentation sets, CDs, and technical publications

Configuring IP, ARP, RARP, RIP, and OSPF Services6-42308627-14.00 Rev 00Disabling and Reenabling an AreaWhen you define an OSPF area, the area is auto

Customizing OSPF Services308627-14.00 Rev 006-43 Configuring AuthenticationOSPF provides a measure of security for an area through the use of password

Configuring IP, ARP, RARP, RIP, and OSPF Services6-44308627-14.00 Rev 00Configuring a Summary RouteOSPF border routers generate summary advertisements

Customizing OSPF Services308627-14.00 Rev 006-45 Using the BCCTo configure a summary route, navigate to an OSPF area prompt (for example, box; ip; osp

Configuring IP, ARP, RARP, RIP, and OSPF Services6-46308627-14.00 Rev 00Configuring a Stub AreaA stub area does not import ASEs and may or may not imp

Customizing OSPF Services308627-14.00 Rev 006-47 Using the BCCTo configure an area as a stub, navigate to an OSPF area prompt (for example, box; ip; o

Configuring IP, ARP, RARP, RIP, and OSPF Services6-48308627-14.00 Rev 00Configuring a Not-So-Stubby Area (NSSA)An OSPF not-so-stubby area (NSSA) is si

Customizing OSPF Services308627-14.00 Rev 006-49 For example, the following command sequence configures area 0.0.0.1 as an NSSA, enables the originati

Configuring IP, ARP, RARP, RIP, and OSPF Services6-50308627-14.00 Rev 00Configuring an NSSA Address RangeTo implement an NSSA, you must configure at l

Customizing OSPF Services308627-14.00 Rev 006-51 To change the default values for an OSPF NSSA address range, enter:<area_parameter> <value&g

308627-14.00 Rev 001-1 Chapter 1IP Concepts, Terminology, and FeaturesThis chapter introduces concepts and terminology used in this guide.Topic PageIP

Configuring IP, ARP, RARP, RIP, and OSPF Services6-52308627-14.00 Rev 006. Set the following parameters:•NSSA Range Net • NSSA Range MaskClick on Help

Customizing OSPF Services308627-14.00 Rev 006-53 Configuring an Area Border RouterEach OSPF area is connected to the backbone by one or more border ro

Configuring IP, ARP, RARP, RIP, and OSPF Services6-54308627-14.00 Rev 00By definition, a border router has an interface to the backbone and interfaces

Customizing OSPF Services308627-14.00 Rev 006-55 Figure 6-5. Virtual Link and Transit AreaTo configure an interface to support a virtual link:1.Identi

Configuring IP, ARP, RARP, RIP, and OSPF Services6-56308627-14.00 Rev 00To configure a virtual backbone link, complete the following tasks:Site Manage

Customizing OSPF Services308627-14.00 Rev 006-57 Configuring OSPF Accept and Announce PoliciesOSPF requires that all routers in a given area maintain

Configuring IP, ARP, RARP, RIP, and OSPF Services6-58308627-14.00 Rev 00Defining an OSPF Accept PolicyTo define a new OSPF accept policy, you must do

Customizing OSPF Services308627-14.00 Rev 006-59 For example, the following command sets the state to disabled for OSPF accept policy pol_1:accept/pol

Configuring IP, ARP, RARP, RIP, and OSPF Services6-60308627-14.00 Rev 00Using Site ManagerTo create an accept policy, complete the following tasks:Sit

Customizing OSPF Services308627-14.00 Rev 006-61 Specifying Matching Criteria for an OSPF Accept PolicyYou can use the BCC or Site Manager to specify

Configuring IP, ARP, RARP, RIP, and OSPF Services1-2308627-14.00 Rev 00IP AddressesAn IP address consists of 32 bits that have the form network.host.

Configuring IP, ARP, RARP, RIP, and OSPF Services6-62308627-14.00 Rev 00For example, the following command sequence invokes a match prompt for the OSP

Customizing OSPF Services308627-14.00 Rev 006-63 Defining an OSPF Announce PolicyTo define a new OSPF announce policy, you must do the following:• Sup

Configuring IP, ARP, RARP, RIP, and OSPF Services6-64308627-14.00 Rev 00For example, the following command specifies a precedence value of 12 for OSPF

Customizing OSPF Services308627-14.00 Rev 006-65 Specifying Modification Values for an OSPF Announce PolicyYou can use the BCC or Site Manager to supp

Configuring IP, ARP, RARP, RIP, and OSPF Services6-66308627-14.00 Rev 00For example, the following command sequence sets the propagate bit in type 7 L

Customizing OSPF Services308627-14.00 Rev 006-67 Using Site ManagerTo specify an override value for an OSPF announce policy, complete the following ta

Configuring IP, ARP, RARP, RIP, and OSPF Services6-68308627-14.00 Rev 00Specifying Matching Criteria for an OSPF Announce PolicyYou can use the BCC or

Customizing OSPF Services308627-14.00 Rev 006-69 bgp-next-hop* List of IP addressesSpecifies one or more IP addresses. This policy applies to BGP adve

Configuring IP, ARP, RARP, RIP, and OSPF Services6-70308627-14.00 Rev 00Using Site ManagerTo specify matching criteria for an OSPF announce policy, co

Customizing OSPF Services308627-14.00 Rev 006-71 7. Set one or more of the following parameters:•Networks•Route Source •From RIP Gateway •Received on

IP Concepts, Terminology, and Features308627-14.00 Rev 001-3 Figure 1-1. Network and Host Portions of IP AddressesYou specify IP addresses in dotted-d

308627-14.00 Rev 00A-1 Appendix ASite Manager ParametersThis appendix contains the Site Manager parameter descriptions for IP, OSPF, and RIP services.

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-2308627-14.00 Rev 00IP ParametersIP Configuration ParametersTopic PageIP Configuration ParametersA-

Site Manager Parameters308627-14.00 Rev 00A-3 Parameter: Subnet MaskPath: Select IP from the Select Protocols window and click on OK.Default: NoneOpti

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-4308627-14.00 Rev 00IP Interface ParametersParameter: UnNumbered Assoc AddressPath: Select IP from

Site Manager Parameters308627-14.00 Rev 00A-5 Parameter: Broadcast AddressPath: Configuration Manager > Protocols > IP > InterfacesDefault: B

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-6308627-14.00 Rev 00Parameter: MTU DiscoveryPath: Configuration Manager > Protocols > IP >

Site Manager Parameters308627-14.00 Rev 00A-7 Parameter: Address Resolution TypePath: Configuration Manager > Protocols > IP > InterfacesDefa

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-8308627-14.00 Rev 00Parameter: ProxyPath: Configuration Manager > Protocols > IP > Interfa

Site Manager Parameters308627-14.00 Rev 00A-9 Parameter: Upd Xsum OnPath: Configuration Manager > Protocols > IP > InterfacesDefault: Enabled

Configuring IP, ARP, RARP, RIP, and OSPF Services1-4308627-14.00 Rev 00Subnet AddressingThe concept of subnetworks (or subnets) extends the IP address

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-10308627-14.00 Rev 00Parameter: TR End StationPath: Configuration Manager > Protocols > IP &g

Site Manager Parameters308627-14.00 Rev 00A-11 Parameter: AMRPath: Configuration Manager > Protocols > IP > InterfacesDefault: DisabledOption

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-12308627-14.00 Rev 00Parameter: Ethernet Arp EncapsPath: Configuration Manager > Protocols >

Site Manager Parameters308627-14.00 Rev 00A-13 Parameter: SMDS Arp Request AddressPath: Configuration Manager > Protocols > IP > InterfacesDe

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-14308627-14.00 Rev 00Parameter: FRM Cast 1 DLCIPath: Configuration Manager > Protocols > IP &

Site Manager Parameters308627-14.00 Rev 00A-15 Parameter: Slot MaskPath: Configuration Manager > Protocols > IP > InterfacesDefault: Slot-mas

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-16308627-14.00 Rev 00Parameter: Forward Cache SizePath: Configuration Manager > Protocols > I

Site Manager Parameters308627-14.00 Rev 00A-17 Parameter: Unnumbered Associated AlternatePath: Configuration Manager > Protocols > IP > Inter

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-18308627-14.00 Rev 00Parameter: ARP Server ATM Address User PartPath: Configuration Manager > Pr

Site Manager Parameters308627-14.00 Rev 00A-19 IP Global ParametersParameter: EnablePath: Configuration Manager > Protocols > IP > GlobalDefa

IP Concepts, Terminology, and Features308627-14.00 Rev 001-5 You construct a subnet mask as follows:• Assign a value of 1 to each of the 8, 16, or 24

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-20308627-14.00 Rev 00Parameter: ARP ForwardingPath: Configuration Manager > Protocols > IP &g

Site Manager Parameters308627-14.00 Rev 00A-21 Parameter: Nonlocal ARP DestinationPath: Configuration Manager > Protocols > IP > GlobalDefaul

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-22308627-14.00 Rev 00Parameter: RIP DiameterPath: Configuration Manager > Protocols > IP >

Site Manager Parameters308627-14.00 Rev 00A-23 Parameter: Estimated NetworksPath: Configuration Manager > Protocols > IP > GlobalDefault: 0Op

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-24308627-14.00 Rev 00Parameter: Enable Default Route for SubnetsPath: Configuration Manager > Pr

Site Manager Parameters308627-14.00 Rev 00A-25 Parameter: RIP Maximum Equal Cost PathsPath: Configuration Manager > Protocols > IP > GlobalDe

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-26308627-14.00 Rev 00Static Route ParametersParameter: Enable ISP Mode SupportPath: Configuration M

Site Manager Parameters308627-14.00 Rev 00A-27 Parameter: Destination IP AddressPath: Configuration Manager > Protocols > IP > Static RoutesD

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-28308627-14.00 Rev 00Parameter: CostPath: Configuration Manager > Protocols > IP > Static

Site Manager Parameters308627-14.00 Rev 00A-29 Parameter: PreferencePath: Configuration Manager > Protocols > IP > Static RoutesDefault: 16Op

Configuring IP, ARP, RARP, RIP, and OSPF Services1-6308627-14.00 Rev 00Table 1-2 lists the range of possible subnet masks for Class B and Class C addr

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-30308627-14.00 Rev 00Adjacent Host ParametersParameter: EnablePath: Configuration Manager > Prot

Site Manager Parameters308627-14.00 Rev 00A-31 Parameter: Next Hop Interface AddrPath: Configuration Manager > Protocols > IP > Adjacent Host

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-32308627-14.00 Rev 00Parameter: Remote Party Sub-AddressPath: Configuration Manager > Protocols

Site Manager Parameters308627-14.00 Rev 00A-33 Router Discovery ParametersParameter: EnablePath: Configuration Manager > Protocols > IP > Rou

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-34308627-14.00 Rev 00Parameter: Maximum IntervalPath: Configuration Manager > Protocols > IP

Site Manager Parameters308627-14.00 Rev 00A-35 RARP ParametersParameter: Enable/DisablePath: Configuration Manager > Protocols > IP > Reverse

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-36308627-14.00 Rev 00Parameter: IP AddressPath: Configuration Manager > Protocols > IP > R

Site Manager Parameters308627-14.00 Rev 00A-37 OSPF ParametersOSPF Global ParametersTopic PageOSPF Global ParametersA-37OSPF Interface Parameters A-42

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-38308627-14.00 Rev 00Parameter: Router IDPath: Configuration Manager > Protocols > IP > OS

Site Manager Parameters308627-14.00 Rev 00A-39 Parameter: Hold Down TimerPath: Configuration Manager > Protocols > IP > OSPF/MOSPF > Globa

IP Concepts, Terminology, and Features308627-14.00 Rev 001-7 Supernet AddressingA supernet is a group of networks identified by contiguous network add

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-40308627-14.00 Rev 00Parameter: Backup EnablePath: Configuration Manager > Protocols > IP >

Site Manager Parameters308627-14.00 Rev 00A-41 Parameter: Tag Generation MethodPath: Configuration Manager > Protocols > IP > OSPF/MOSPF >

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-42308627-14.00 Rev 00OSPF Interface ParametersParameter: RFC 1583 Compatibility EnablePath: Configu

Site Manager Parameters308627-14.00 Rev 00A-43 Parameter: Area IDPath: Configuration Manager > Protocols > IP > OSPF/MOSPF > InterfacesDef

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-44308627-14.00 Rev 00Parameter: Rtr PriorityPath: Configuration Manager > Protocols > IP >

Site Manager Parameters308627-14.00 Rev 00A-45 Parameter: Retransmit IntervalPath: Configuration Manager > Protocols > IP > OSPF/MOSPF > I

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-46308627-14.00 Rev 00Parameter: Dead IntervalPath: Configuration Manager > Protocols > IP >

Site Manager Parameters308627-14.00 Rev 00A-47 Parameter: Metric CostPath: Configuration Manager > Protocols > IP > OSPF/MOSPF > Interface

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-48308627-14.00 Rev 00Parameter: MTU SizePath: Configuration Manager > Protocols > IP > OSP

Site Manager Parameters308627-14.00 Rev 00A-49 Neighbor Parameters for an NBMA InterfaceParameter: MTU Mismatch Detect EnablePath: Configuration Manag

308627-14.00 Rev 00iiiNortel Networks NA Inc. Software License AgreementNOTICE: Please carefully read this license agreement before copying or using t

Configuring IP, ARP, RARP, RIP, and OSPF Services1-8308627-14.00 Rev 00Classless Interdomain RoutingClassless interdomain routing (CIDR) is an address

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-50308627-14.00 Rev 00Parameter: EnablePath: Configuration Manager > Protocols > IP > OSPF/

Site Manager Parameters308627-14.00 Rev 00A-51 OSPF Area ParametersParameter: OSPF AreaPath: Configuration Manager > Protocols > IP > OSPF/MO

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-52308627-14.00 Rev 00Parameter: Import AS ExternPath: Configuration Manager > Protocols > IP

Site Manager Parameters308627-14.00 Rev 00A-53 Parameter: Import SummariesPath: Configuration Manager > Protocols > IP > OSPF/MOSPF > Area

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-54308627-14.00 Rev 00Parameter: NSSA Originate Def RoutePath: Configuration Manager > Protocols

Site Manager Parameters308627-14.00 Rev 00A-55 Area Range ParametersParameter: NSSA Def Route TypePath: Configuration Manager > Protocols > IP &

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-56308627-14.00 Rev 00Parameter: Range MaskPath: Configuration Manager > Protocols > IP > O

Site Manager Parameters308627-14.00 Rev 00A-57 Parameter: StatusPath: Configuration Manager > Protocols > IP > OSPF/MOSPF > Areas > Ran

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-58308627-14.00 Rev 00OSPF NSSA Range ParametersParameter: NSSA Range NetPath: Configuration Manager

Site Manager Parameters308627-14.00 Rev 00A-59 Parameter: EnablePath: Configuration Manager > Protocols > IP > OSPF/MOSPF > NSSA RangesDef

IP Concepts, Terminology, and Features308627-14.00 Rev 001-9 Figure 1-3. Internetwork Segmented into Three Autonomous SystemsRouter5Router6Router7Rout

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-60308627-14.00 Rev 00Parameter: StatusPath: Configuration Manager > Protocols > IP > OSPF/

Site Manager Parameters308627-14.00 Rev 00A-61 OSPF Virtual Interface ParametersParameter: Transit Area IDPath: Configuration Manager > Protocols &

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-62308627-14.00 Rev 00Parameter: Transit DelayPath: Configuration Manager > Protocols > IP >

Site Manager Parameters308627-14.00 Rev 00A-63 Parameter: Hello IntervalPath: Configuration Manager > Protocols > IP > OSPF/MOSPF > Virtua

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-64308627-14.00 Rev 00RIP ParametersParameter: PasswordPath: Configuration Manager > Protocols &g

Site Manager Parameters308627-14.00 Rev 00A-65 Parameter: RIP ListenPath: Configuration Manager > Protocols > IP > RIP InterfacesDefault: Ena

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-66308627-14.00 Rev 00Parameter: Default Route ListenPath: Configuration Manager > Protocols >

Site Manager Parameters308627-14.00 Rev 00A-67 Parameter: Time to LivePath Configuration Manager > Protocols > IP > RIP InterfacesDefault: 1O

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-68308627-14.00 Rev 00Parameter: Holddown TimerPath: Configuration Manager > Protocols > IP &g

Site Manager Parameters308627-14.00 Rev 00A-69 Parameter: Triggered UpdatesPath: Configuration Manager > Protocols > IP > RIP InterfacesDefau

Configuring IP, ARP, RARP, RIP, and OSPF Services1-10308627-14.00 Rev 00Address Resolution Protocol (ARP)The IP router needs both a physical address a

Configuring IP, ARP, RARP, RIP, and OSPF ServicesA-70308627-14.00 Rev 00Parameter: Initial Stabilization TimerPath: Configuration Manager > Protoco

308627-14.00 Rev 00B-1 Appendix BRouting Policy ParametersThis appendix contains the Site Manager parameter descriptions for accept and announce polic

Configuring IP, ARP, RARP, RIP, and OSPF ServicesB-2308627-14.00 Rev 00Common Accept Policy ParametersParameter: EnablePath: Configuration Manager >

Routing Policy Parameters308627-14.00 Rev 00B-3 Parameter: NetworksPath: Configuration Manager > Protocols > IP > Policy Filters > RIP >

Configuring IP, ARP, RARP, RIP, and OSPF ServicesB-4308627-14.00 Rev 00Parameter: Route PreferencePath: Configuration Manager > Protocols > IP &

Routing Policy Parameters308627-14.00 Rev 00B-5 RIP Accept Policy ParametersParameter: From GatewayPath: Configuration Manager > Protocols > IP

Configuring IP, ARP, RARP, RIP, and OSPF ServicesB-6308627-14.00 Rev 00OSPF Accept Policy ParametersParameter: Apply Subnet MaskPath: Configuration Ma

Routing Policy Parameters308627-14.00 Rev 00B-7 Common Announce Policy ParametersParameter: TagPath: Configuration Manager > Protocols > IP >

Configuring IP, ARP, RARP, RIP, and OSPF ServicesB-8308627-14.00 Rev 00Parameter: NamePath: Configuration Manager > Protocols > IP > Policy F

Routing Policy Parameters308627-14.00 Rev 00B-9 Parameter: ActionPath: Configuration Manager > Protocols > IP > Policy Filters > RIP >

IP Concepts, Terminology, and Features308627-14.00 Rev 001-11 In Figure 1-4, the router wants to send a packet to host C but knows only host C’s IP ad

Configuring IP, ARP, RARP, RIP, and OSPF ServicesB-10308627-14.00 Rev 00Parameter: Route SourcePath: Configuration Manager > Protocols > IP >

Routing Policy Parameters308627-14.00 Rev 00B-11 Parameter: AdvertisePath: Configuration Manager > Protocols > IP > Policy Filters > RIP &

Configuring IP, ARP, RARP, RIP, and OSPF ServicesB-12308627-14.00 Rev 00Parameter: From RIP GatewayPath: Configuration Manager > Protocols > IP

Routing Policy Parameters308627-14.00 Rev 00B-13 Parameter: From OSPF Router IDPath: Configuration Manager > Protocols > IP > Policy Filters

Configuring IP, ARP, RARP, RIP, and OSPF ServicesB-14308627-14.00 Rev 00Parameter: Received OSPF TagPath: Configuration Manager > Protocols > IP

Routing Policy Parameters308627-14.00 Rev 00B-15 Parameter: From EGP ASPath: Configuration Manager > Protocols > IP > Policy Filters > RIP

Configuring IP, ARP, RARP, RIP, and OSPF ServicesB-16308627-14.00 Rev 00Parameter: From BGP PeerPath: Configuration Manager > Protocols > IP >

Routing Policy Parameters308627-14.00 Rev 00B-17 RIP Announce Policy ParametersParameter: Received BGP Next HopPath: Configuration Manager > Protoc

Configuring IP, ARP, RARP, RIP, and OSPF ServicesB-18308627-14.00 Rev 00Parameter: Outbound InterfacesPath: Configuration Manager > Protocols >

Routing Policy Parameters308627-14.00 Rev 00B-19 OSPF Announce Policy ParametersParameter: OSPF TypePath: Configuration Manager > Protocols > IP

Configuring IP, ARP, RARP, RIP, and OSPF Services1-12308627-14.00 Rev 00Reverse Address Resolution Protocol (RARP)You can configure a Nortel Networks

Configuring IP, ARP, RARP, RIP, and OSPF ServicesB-20308627-14.00 Rev 00Parameter: BGP/OSPF Automatic TagPath: Configuration Manager > Protocols &g

Routing Policy Parameters308627-14.00 Rev 00B-21 Parameter: OSPF NSSA PropagatePath: Configuration Manager > Protocols > IP > Policy Filters

308627-14.00 Rev 00C-1 Appendix CImport and Export Route FiltersThis appendix contains RIP and OSPF import and export route filter parameters. You can

Configuring IP, ARP, RARP, RIP, and OSPF ServicesC-2308627-14.00 Rev 00Parameter: Import MaskPath: Configuration Manager > Protocols > IP > R

Import and Export Route Filters308627-14.00 Rev 00C-3 Parameter: InterfacePath: Configuration Manager > Protocols > IP > Route Filters > R

Configuring IP, ARP, RARP, RIP, and OSPF ServicesC-4308627-14.00 Rev 00Parameter: PreferencePath: Configuration Manager > Protocols > IP > Ro

Import and Export Route Filters308627-14.00 Rev 00C-5 RIP Export FiltersParameter: Import Apply MaskPath: Configuration Manager > Protocols > IP

Configuring IP, ARP, RARP, RIP, and OSPF ServicesC-6308627-14.00 Rev 00Parameter: Export MaskPath: Configuration Manager > Protocols > IP > R

Import and Export Route Filters308627-14.00 Rev 00C-7 Parameter: InterfacePath: Configuration Manager > Protocols > IP > Route Filters > R

IP Concepts, Terminology, and Features308627-14.00 Rev 001-13 Routing Information Protocol (RIP)The Routing Information Protocol (RIP) is a distance-v

Configuring IP, ARP, RARP, RIP, and OSPF ServicesC-8308627-14.00 Rev 00OSPF Import FiltersParameter: RIP MetricPath: Configuration Manager > Protoc

Import and Export Route Filters308627-14.00 Rev 00C-9 OSPF Export FiltersParameter: PreferencePath: Configuration Manager > Protocols > IP >

Configuring IP, ARP, RARP, RIP, and OSPF ServicesC-10308627-14.00 Rev 00Parameter: Export MaskPath: Configuration Manager > Protocols > IP >

Import and Export Route Filters308627-14.00 Rev 00C-11 Parameter: EnablePath: Configuration Manager > Protocols > IP > Route Filters > OSP

Configuring IP, ARP, RARP, RIP, and OSPF ServicesC-12308627-14.00 Rev 00Parameter: TagPath: Configuration Manager > Protocols > IP > Route Fi

308627-14.00 Rev 00D-1 Appendix DRoute Weight WorksheetThis appendix provides a worksheet that you can use to calculate route weights for OSPF, RIP, E

Configuring IP, ARP, RARP, RIP, and OSPF ServicesD-2308627-14.00 Rev 003.Select one route from the following list:4.Multiply the value associated with

Route Weight Worksheet308627-14.00 Rev 00D-3 6.Multiply the value associated with the route by the following decimal or hexadecimal value:2097152 x __

Configuring IP, ARP, RARP, RIP, and OSPF ServicesD-4308627-14.00 Rev 008.Add the values you have calculated.__________________________________________

308627-14.00 Rev 00E-1 Appendix EIP/OSPF Configuration ExampleThe IP/OSPF configuration in Figure E-1 shows an AS divided into different types of OSPF

Configuring IP, ARP, RARP, RIP, and OSPF Services1-14308627-14.00 Rev 00OSPF Addresses and Variable-Length MasksA destination in an OSPF route adverti

Configuring IP, ARP, RARP, RIP, and OSPF ServicesE-2308627-14.00 Rev 00Figure E-1. IP/OSPF ConfigurationFDDIF31.4F31.2F31.3.5 F31.1 F31E21128.10.2.6

IP/OSPF Configuration Example308627-14.00 Rev 00E-3 Tables E-1 through E-6 list nondefault configuration parameters for router 1 through router 6. Par

Configuring IP, ARP, RARP, RIP, and OSPF ServicesE-4308627-14.00 Rev 00Table E-2. Area Border Router 2Site Manager Window/Parameter SettingInterface

IP/OSPF Configuration Example308627-14.00 Rev 00E-5 Table E-3. Area Border Router 3Site Manager Window/Parameter SettingInterface F31IP Configuration

Configuring IP, ARP, RARP, RIP, and OSPF ServicesE-6308627-14.00 Rev 00Table E-4. Area Border Router 4Site Manager Window/Parameter SettingInterface

IP/OSPF Configuration Example308627-14.00 Rev 00E-7 Table E-5. Internal Backbone Router 5Site Manager Window/Parameter SettingInterface F31IP Configu

308627-14.00 Rev 00Index-1Aaccept policiesOSPF, 6-57overview, 1-22RIP, 5-24setting maximum number, 3-13acronyms, xixaction command, 6-45Addr Mask Repl

Index-2308627-14.00 Rev 00as-boundary-router command, 6-7as-default-tag command, 6-13ASE Metric Support parameter, 6-10, A-39ase-metric-support comman

308627-14.00 Rev 00Index-3disabling (continued)RARP on an interface, 4-13RARP on the router, 4-14, 4-15RIP, 5-3RIP listening, 5-14route filter support

IP Concepts, Terminology, and Features308627-14.00 Rev 001-15 Routers connected by a point-to-point network or a virtual link always form an adjacency

Index-4308627-14.00 Rev 00Holddown Timer parameter, 5-22, A-68holddown-timer command, 5-21hops, specifying maximum number with time-to-live value, 3-9

308627-14.00 Rev 00Index-5MTU Size parameter, 6-35, A-48mtu-discovery command, 3-26mtu-mismatch-detect command, 6-35multiaccess network, router priori

Index-6308627-14.00 Rev 00policy parameters (continued)Enable (accept), B-2Enable (announce), B-7External Route Source (announce), B-17From BGP Peer (

308627-14.00 Rev 00Index-7RIP Maximum Equal Cost Paths parameter, 3-17, A-25RIP Mode parameter, 5-6, A-68RIP route filters, C-1RIP Supply parameter, 5

Index-8308627-14.00 Rev 00timeout-timer command, 5-20timers, configuring for RIP, 5-18time-to-live command, 3-9, 5-13timing out entries in the address

Configuring IP, ARP, RARP, RIP, and OSPF Services1-16308627-14.00 Rev 00OSPF AreasOSPF routers reduce and restrict the amount of internal and external

IP Concepts, Terminology, and Features308627-14.00 Rev 001-17 Each area has a unique ID number. (ID 0.0.0.0 is always reserved for the OSPF backbone.)

iv308627-14.00 Rev 00for the security of its own data and information and for maintaining adequate procedures apart from the Software to reconstruct

Configuring IP, ARP, RARP, RIP, and OSPF Services1-18308627-14.00 Rev 00OSPF Router TypesOSPF defines the following router types: • Internal router. A

IP Concepts, Terminology, and Features308627-14.00 Rev 001-19 OSPF Implementation NotesThis section provides suggestions to help you configure your OS

Configuring IP, ARP, RARP, RIP, and OSPF Services1-20308627-14.00 Rev 00Router Discovery ProtocolBefore a host can send IP datagrams beyond its direct

IP Concepts, Terminology, and Features308627-14.00 Rev 001-21 Route WeightsRoute-weight calculation is an internal tool that IP uses to facilitate the

Configuring IP, ARP, RARP, RIP, and OSPF Services1-22308627-14.00 Rev 00IP Routing Policies and FiltersThe IP router allows you to control the flow of

IP Concepts, Terminology, and Features308627-14.00 Rev 001-23 Every IP router maintains a table of current routing information. The routing table mana

Configuring IP, ARP, RARP, RIP, and OSPF Services1-24308627-14.00 Rev 00The flow of routing information between the network, the protocols, and the ro

IP Concepts, Terminology, and Features308627-14.00 Rev 001-25 Periodically, the routing table manager announces routes to other routers in the network

Configuring IP, ARP, RARP, RIP, and OSPF Services1-26308627-14.00 Rev 00IP Traffic FiltersA traffic filter enables the router to selectively relay or

308627-14.00 Rev 002-1 Chapter 2Starting IP ServicesThis chapter describes how to use the BCC and Site Manager to perform a basic configuration -- tha

308627-14.00 Rev 00vContents PrefaceBefore You Begin ...

Configuring IP, ARP, RARP, RIP, and OSPF Services2-2308627-14.00 Rev 00Using the BCCYou can use the BCC to start IP, RIP, OSPF, and Router Discovery.

Starting IP Services308627-14.00 Rev 002-3 Step 2: Configuring an IP InterfaceTo configure an IP interface on a physical interface, navigate to the pr

Configuring IP, ARP, RARP, RIP, and OSPF Services2-4308627-14.00 Rev 00Starting OSPFYou start OSPF on the router by adding OSPF to an existing IP inte

Starting IP Services308627-14.00 Rev 002-5 Using Site ManagerYou can use Site Manager to start IP, RIP, OSPF, and RARP, and to configure a circuitless

Configuring IP, ARP, RARP, RIP, and OSPF Services2-6308627-14.00 Rev 00An IP interface is now configured with default values for all interface paramet

Starting IP Services308627-14.00 Rev 002-7 Adding RIP to an IP InterfaceTo add RIP to an existing IP interface, complete the following tasks:Site Mana

Configuring IP, ARP, RARP, RIP, and OSPF Services2-8308627-14.00 Rev 00Starting OSPFBefore you can select a protocol to run on the router, you must co

Starting IP Services308627-14.00 Rev 002-9 OSPF is now running on the router and on the interface with default values for all parameters. You customiz

Configuring IP, ARP, RARP, RIP, and OSPF Services2-10308627-14.00 Rev 00Configuring a Circuitless IP InterfaceA circuitless IP interface has an IP add

Starting IP Services308627-14.00 Rev 002-11 Choosing Slots to Support the Circuitless InterfaceBy default, all slots support the IP circuitless interf

vi308627-14.00 Rev 00Route Preferences ...1-20Ro

Configuring IP, ARP, RARP, RIP, and OSPF Services2-12308627-14.00 Rev 00As it does with routes learned over numbered interfaces, IP stores each route

Starting IP Services308627-14.00 Rev 002-13 Using the Alternate Associated Address OptionThe alternate associated address option ensures that a networ

308627-14.00 Rev 003-1 Chapter 3Configuring and Customizing IPYou customize IP services by setting parameters as described under the following topics:

Configuring IP, ARP, RARP, RIP, and OSPF Services3-2308627-14.00 Rev 00Customizing IP Global ParametersWhen you configure an IP interface on a slot, I

Configuring and Customizing IP308627-14.00 Rev 003-3 Disabling and Reenabling Global IPIP is enabled on the slot by default. You can disable and reena

Configuring IP, ARP, RARP, RIP, and OSPF Services3-4308627-14.00 Rev 00Configuring the Router for Not-Forwarding ModeBy default, IP forwards all packe

Configuring and Customizing IP308627-14.00 Rev 003-5 Using Site ManagerTo specify the forwarding mode, complete the following tasks:Site Manager Proce

Configuring IP, ARP, RARP, RIP, and OSPF Services3-6308627-14.00 Rev 00Configuring Bridging on a Router in Not-Forwarding ModeBecause the IP router do

Configuring and Customizing IP308627-14.00 Rev 003-7 ES > Toke n > Bay > FDDI > Bay Not supportedES > Token > Bay > PTP > Bay

308627-14.00 Rev 00viiSpecifying the Maximum Number of IP Policies ...3-13Disabling and Reenabling R

Configuring IP, ARP, RARP, RIP, and OSPF Services3-8308627-14.00 Rev 00Bay > PPP††† > Bay Not supportedBay > Eth > Bay > Eth > ES‡‡‡

Configuring and Customizing IP308627-14.00 Rev 003-9 Setting the Time-to-Live Value on a Source PacketEach IP data packet includes a time-to-live (TTL

Configuring IP, ARP, RARP, RIP, and OSPF Services3-10308627-14.00 Rev 00Using Site ManagerTo set the TTL value, complete the following tasks:Allowing

Configuring and Customizing IP308627-14.00 Rev 003-11 Using Site ManagerTo allow an all-zero or all-one subnet address, complete the following tasks:E

Configuring IP, ARP, RARP, RIP, and OSPF Services3-12308627-14.00 Rev 00To preallocate memory for the routing tables, complete the following tasks:Usi

Configuring and Customizing IP308627-14.00 Rev 003-13 To allow the IP router to use a default route for unknown subnets, complete the following tasks:

Configuring IP, ARP, RARP, RIP, and OSPF Services3-14308627-14.00 Rev 00Using Site ManagerTo set the maximum number of policies, complete the followin

Configuring and Customizing IP308627-14.00 Rev 003-15 Using Site ManagerTo disable or reenable support for route filters, complete the following tasks

Configuring IP, ARP, RARP, RIP, and OSPF Services3-16308627-14.00 Rev 00• Destination-hash distribution based on the destination address only. IP forw

Configuring and Customizing IP308627-14.00 Rev 003-17 To specify the maximum number of equal-cost paths for OSPF, navigate to the IP global prompt (fo

viii308627-14.00 Rev 00Chapter 4 Customizing ARP and RARP ServicesCustomizing ARP ...

Configuring IP, ARP, RARP, RIP, and OSPF Services3-18308627-14.00 Rev 00Customizing the IP Routing Table StructureStructurally, the IP routing table c

Configuring and Customizing IP308627-14.00 Rev 003-19 Specifying the Percentage of Buffers Available to ARPBy default, ARP can use 100 percent of the

Configuring IP, ARP, RARP, RIP, and OSPF Services3-20308627-14.00 Rev 00Customizing an IP InterfaceAn IP network interface consists of a physical circ

Configuring and Customizing IP308627-14.00 Rev 003-21 When you configure an IP interface on a circuit, the interface is enabled with default values fo

Configuring IP, ARP, RARP, RIP, and OSPF Services3-22308627-14.00 Rev 00Disabling and Reenabling an IP InterfaceWhen you configure an IP interface on

Configuring and Customizing IP308627-14.00 Rev 003-23 Specifying a Broadcast Address for an InterfaceIn broadcasting, the IP router transmits a single

Configuring IP, ARP, RARP, RIP, and OSPF Services3-24308627-14.00 Rev 00For example, the following command assigns broadcast address 1.1.1.1 to IP int

Configuring and Customizing IP308627-14.00 Rev 003-25 Using the BCCTo specify the cost of an IP interface, navigate to an IP interface prompt (for exa

Configuring IP, ARP, RARP, RIP, and OSPF Services3-26308627-14.00 Rev 00Enabling MTU Discovery on an InterfaceA probe MTU is a request for the maximum

Configuring and Customizing IP308627-14.00 Rev 003-27 Using Site ManagerTo enable or disable MTU discovery on an interface, complete the following tas

308627-14.00 Rev 00ixConfiguring RIP Accept and Announce Policies ...5-24Defining a RIP Accept

Configuring IP, ARP, RARP, RIP, and OSPF Services3-28308627-14.00 Rev 00Using the BCCTo enable or disable ICMP address-mask reply messages, navigate t

Configuring and Customizing IP308627-14.00 Rev 003-29 Disabling and Reenabling ICMP Redirect MessagesAn ICMP redirect is a message sent by the router

Configuring IP, ARP, RARP, RIP, and OSPF Services3-30308627-14.00 Rev 00Enabling All-Subnet Broadcasting on an InterfaceAn all-subnet broadcast (ASB)

Configuring and Customizing IP308627-14.00 Rev 003-31 Using Site ManagerTo enable or disable all-subnet broadcasting, complete the following tasks:Dis

Configuring IP, ARP, RARP, RIP, and OSPF Services3-32308627-14.00 Rev 00For example, the following command turns off UDP checksum processing on IP int

Configuring and Customizing IP308627-14.00 Rev 003-33 Specifying a MAC Address or E.164 AddressYou can use Site Manager or the BCC to specify a MAC ad

Configuring IP, ARP, RARP, RIP, and OSPF Services3-34308627-14.00 Rev 00Using Site ManagerTo configure this parameter for a multinet or multigroup con

Configuring and Customizing IP308627-14.00 Rev 003-35 Upon receiving the packet from the token ring network, the peer router strips off the RIF and co

Configuring IP, ARP, RARP, RIP, and OSPF Services3-36308627-14.00 Rev 00Using the BCCTo disable or reenable source route end-station support, navigate

Configuring and Customizing IP308627-14.00 Rev 003-37 Configuring the MTU for an IP InterfaceYou can set the MTU for an interface to a value less than