Avaya Configuring IP Multicasting Services Manual do Utilizador

Part No. 117355-A Rev. ASeptember 1997BayRS Version 12.00Site Manager Software Version 6.00 Configuring IPMulticasting andMultimedia Services

Configuring IP Multicasting and Multimedia Services5-4 117355-A Rev. AConfiguring MOSPF GloballyYou can use Site Manager to add MOSPF extensions to OSP

Customizing OSPF Multicast Extensions117355-A Rev. A 5-5Enabling Deterministic MulticastingMOSPF runs in two modes: nondeterministic mode and determin

Configuring IP Multicasting and Multimedia Services5-6 117355-A Rev. ASpecifying a Forwarding Timeout ValueYou can use Site Manager to specify a value

Customizing OSPF Multicast Extensions117355-A Rev. A 5-7Specifying a Maximum Number of Queued PacketsBy default, MOSPF queues a maximum of 64 packets

Configuring IP Multicasting and Multimedia Services5-8 117355-A Rev. AEnabling Dynamic TTLYou can configure MOSPF to drop multicast packets that do not

Customizing OSPF Multicast Extensions117355-A Rev. A 5-9Configuring Multicast Forwarding on an OSPF InterfaceBy default, multicast packets are forwarde

117355-A Rev. A 6-1Chapter 6Configuring QOSPFQOSPF is an extension of OSPF that works in conjunction with RSVP to provide quality of service for multic

Configuring IP Multicasting and Multimedia Services6-2 117355-A Rev. AFigure 6-1. QOSPF TopologyYou add QOSPF extensions to OSPF by enabling MOSPF in

Configuring QOSPF117355-A Rev. A 6-3Enabling the Deterministic Hold-Down FeatureThe deterministic hold-down feature ensures that a data flow does not g

117355-A Rev. A xi Figures Figure 4-1. Multicast Routers ...4-3Figu

Configuring IP Multicasting and Multimedia Services6-4 117355-A Rev. AEnabling Route PinningRoute pinning ensures that once resource reservations have

Configuring QOSPF117355-A Rev. A 6-5Enabling the Opaque CapabilityThe OSPF opaque capability provides support for additional types of LSAs and additio

Configuring IP Multicasting and Multimedia Services6-6 117355-A Rev. AEnabling the Opaque Capability on an InterfaceBy default, if you have enabled th

117355-A Rev. A 7-1Chapter 7Configuring RSVPThe Resource Reservation Protocol (RSVP) allows host systems in an IP network to reserve resources on RSVP-

Configuring IP Multicasting and Multimedia Services7-2 117355-A Rev. AHow RSVP WorksA network host that wants to establish a dataflow with a specified Q

Configuring RSVP117355-A Rev. A 7-3A network host that receives an RSVP path message decides whether it wants to receive data on the proposed dataflow.

Configuring IP Multicasting and Multimedia Services7-4 117355-A Rev. AConfiguring RSVP GloballyWhen you start RSVP on the router, RSVP runs with defaul

Configuring RSVP117355-A Rev. A 7-5Choosing a SlotBy default, RSVP runs on every slot where it is configured.You can use Site Manger to specify the slo

Configuring IP Multicasting and Multimedia Services7-6 117355-A Rev. AConfiguring RSVP Message LoggingYou can use Site Manager to specify the messages

Configuring RSVP117355-A Rev. A 7-7Configuring RSVP on an InterfaceWhen you add RSVP to an IP interface, RSVP is configured on the interface with defaul

Configuring IP Multicasting and Multimedia Services7-8 117355-A Rev. ASetting the RSVP Default Refresh TimerRSVP sends periodic refresh messages to ma

Configuring RSVP117355-A Rev. A 7-9Setting the RSVP Default Lifetime MultiplierThe Lifetime Multiplier is an integer that multiplies the TIME_VALUE ob

Configuring IP Multicasting and Multimedia Services7-10 117355-A Rev. ASetting the RSVP Refresh Blockade MultiplierBy default, an RSVP interface in th

Configuring RSVP117355-A Rev. A 7-11Setting the TTL OverrideBy default, RSVP uses the IP TTL value. You can use Site Manager to override this value.Si

Configuring IP Multicasting and Multimedia Services7-12 117355-A Rev. ASetting the Route Delay ValueThe route delay value specifies the approximate per

Configuring RSVP117355-A Rev. A 7-13Enabling and Disabling UDP EncapsulationBy default, RSVP uses UDP encapsulation on this interface only if it deter

117355-A Rev. A 8-1Chapter 8Reserving Line ResourcesThis chapter covers the following topics:Topic PageAbout Line Resource Reservation 8-2Setting the

Configuring IP Multicasting and Multimedia Services8-2 117355-A Rev. AAbout Line Resource ReservationEmerging real-time multicast applications for dig

Reserving Line Resources117355-A Rev. A 8-3Supported MediaYou must enable the Resource Manager on 10-Mb/s and 100-Mb/s Ethernet, FDDI, MCT1, HSSI, and

117355-A Rev. A xiii Tables Table 4-1. Parts of a Routing Table Entry ...4-6Table 4-2.

Configuring IP Multicasting and Multimedia Services8-4 117355-A Rev. ASetting the Estimated BandwidthTo activate resource reservation, specify a line

Reserving Line Resources117355-A Rev. A 8-5Setting the Reservable BandwidthTo enable RSVP reservable resources, specify the portion of this line’s ban

Configuring IP Multicasting and Multimedia Services8-6 117355-A Rev. ASpecifying the Traffic Queuing AlgorithmBy default, the Line Resource Manager (LR

Reserving Line Resources117355-A Rev. A 8-7Specifying the LRM Policing AlgorithmBy default, LRM does not check RSVP packets against the flowspec (polic

Configuring IP Multicasting and Multimedia Services8-8 117355-A Rev. ASetting the Bandwidth IntervalBy default, LRM measures instantaneous bandwidth o

Reserving Line Resources117355-A Rev. A 8-9Setting the Inflate Reservations PercentageBy default, LRM does not add a safety tolerance to each RSVP rese

Configuring IP Multicasting and Multimedia Services8-10 117355-A Rev. ASpecifying the Unreserved Policing AlgorithmLRM uses one of two policing algori

Reserving Line Resources117355-A Rev. A 8-11Specifying the Unreserved Queue LengthIf the Unreserved Policing Algorithm parameter is set to Queue Limit

Configuring IP Multicasting and Multimedia Services8-12 117355-A Rev. ASpecifying the Multiline Select AlgorithmIf you configured LRM on a multiline ci

Reserving Line Resources117355-A Rev. A 8-13Setting the Multiline Threshold BandwidthWhen using the first fit multiline select algorithm (see “Specifyin

Configuring IP Multicasting and Multimedia Services8-14 117355-A Rev. ASetting the Reservation LatencyBy default, the maximum latency for a reserved fl

Reserving Line Resources117355-A Rev. A 8-15Setting the Maximum Reservable Bandwidth for a DataflowBy default, there is no maximum amount of bandwidth

Configuring IP Multicasting and Multimedia Services8-16 117355-A Rev. ASetting the Maximum Buffer Space for a DataflowBy default, there is no maximum o

117355-A Rev. A A-1 Appendix ASite Manager ParametersFor each parameter associated with a multicast protocol or service, this appendix provides the Si

Configuring IP Multicasting and Multimedia ServicesA-2 117355-A Rev. ADVMRP ParametersThis section describes the DVMRP global, circuit, and tunnel par

Site Manager Parameters117355-A Rev. A A-3 Parameter: Leaf TimeoutPath: Configuration Manager > Protocols > IP > Multicast > DVMRP > Glo

Configuring IP Multicasting and Multimedia ServicesA-4 117355-A Rev. AParameter: Garbage TimeoutPath: Configuration Manager > Protocols > IP >

Site Manager Parameters117355-A Rev. A A-5 Parameter: Neighbor Probe IntervalPath: Configuration Manager > Protocols > IP > Multicast > DVM

Configuring IP Multicasting and Multimedia ServicesA-6 117355-A Rev. AParameter: Pruning EnablePath: Configuration Manager > Protocols > IP >

Site Manager Parameters117355-A Rev. A A-7 DVMRP Circuit ParametersParameter: EnablePath: Configuration Manager > Protocols > IP > Multicast &

117355-A Rev. A xv About This Guide If you are responsible for configuring IGMP, DVMRP, MOSPF, QOSPF, RSVP, or line services, you need to read this g

Configuring IP Multicasting and Multimedia ServicesA-8 117355-A Rev. AParameter: MetricPath: Configuration Manager > Protocols > IP > Multicas

Site Manager Parameters117355-A Rev. A A-9 Parameter: Forward Cache TTLPath: Configuration Manager > Protocols > IP > Multicast > DVMRP >

Configuring IP Multicasting and Multimedia ServicesA-10 117355-A Rev. AParameter: Route ListenPath: Configuration Manager > Protocols > IP > M

Site Manager Parameters117355-A Rev. A A-11 DVMRP Tunnel ParametersParameter: EnablePath: Configuration Manager > Protocols > IP > Multicast &

Configuring IP Multicasting and Multimedia ServicesA-12 117355-A Rev. AParameter: ThresholdPath: Configuration Manager > Protocols > IP > Mult

Site Manager Parameters117355-A Rev. A A-13 Parameter: Route SupplyPath: Configuration Manager > Protocols > IP > Multicast > DVMRP >Tun

Configuring IP Multicasting and Multimedia ServicesA-14 117355-A Rev. AParameter: Report Depend ProbePath: Configuration Manager > Protocols > IP

Site Manager Parameters117355-A Rev. A A-15 IGMP ParametersThis section describes the IGMP global configuration, static host, and entry interface param

Configuring IP Multicasting and Multimedia ServicesA-16 117355-A Rev. AParameter: Estimated GroupsPath: Configuration Manager > Protocols > IP &g

Site Manager Parameters117355-A Rev. A A-17 IGMP Static Host ParametersParameter: Join Ack EnablePath: Configuration Manager > Protocols > IP >

Configuring IP Multicasting and Multimedia Servicesxvi 117355-A Rev. A Before You Begin Before using this guide, you must complete the following proc

Configuring IP Multicasting and Multimedia ServicesA-18 117355-A Rev. AIGMP Entry Interface ParametersParameter: Static Group AddressPath: Configuratio

Site Manager Parameters117355-A Rev. A A-19 Parameter: Interface Query RatePath: Configuration Manager > Protocols > IP > Multicast > IGMP

Configuring IP Multicasting and Multimedia ServicesA-20 117355-A Rev. AIP Configuration ParametersParameter: Max Host Response TimePath: Configuration M

Site Manager Parameters117355-A Rev. A A-21 Parameter: Subnet MaskPath: Select IP from the Select Protocols window and click on OK.Default: NoneOption

Configuring IP Multicasting and Multimedia ServicesA-22 117355-A Rev. AResource Manager ParametersParameter: UnNumbered Assoc AddressPath: Select IP f

Site Manager Parameters117355-A Rev. A A-23 Parameter: Reservable BandwidthPath: XCVR, HSSI, MCT1, or COM Connector configured for the RSVP protocol &g

Configuring IP Multicasting and Multimedia ServicesA-24 117355-A Rev. AParameter: Policing AlgorithmPath: Configuration Manager > XCVR, HSSI, MCT1,

Site Manager Parameters117355-A Rev. A A-25 Parameter: Inflate Reservations PercentagePath: Configuration Manager > XCVR, HSSI, MCT1, or COM Connecto

Configuring IP Multicasting and Multimedia ServicesA-26 117355-A Rev. AParameter: Unreserved Queue LengthPath: Configuration Manager > XCVR, HSSI, M

Site Manager Parameters117355-A Rev. A A-27 Parameter: Multiline Threshold BandwidthPath: Configuration Manager > XCVR, HSSI, MCT1, or COM Connector

About This Guide 117355-A Rev. A xvii screen text Indicates data that appears on the screen. Example: Set Bay Networks Trap Monitor Filters separat

Configuring IP Multicasting and Multimedia ServicesA-28 117355-A Rev. AParameter: Largest BandwidthPath: Configuration Manager > XCVR, HSSI, MCT1, o

Site Manager Parameters117355-A Rev. A A-29 OSPF Parameters for Multicast and QoS ExtensionsOSPF Global ParametersParameter: Multicast ExtensionsPath:

Configuring IP Multicasting and Multimedia ServicesA-30 117355-A Rev. AParameter: Opaque CapabilityPath: Configuration Manager > Protocols > IP &

Site Manager Parameters117355-A Rev. A A-31 Parameter: Max Queued Multcast PacketsPath: Configuration Manager > Protocols > IP > OSPF > Glo

Configuring IP Multicasting and Multimedia ServicesA-32 117355-A Rev. AOSPF Interface ParametersParameter: Multicast ForwardingPath: Configuration Mana

Site Manager Parameters117355-A Rev. A A-33 RSVP ParametersRSVP Global ParametersParameter: EnablePath: Configuration Manager > Protocols > IP &g

Configuring IP Multicasting and Multimedia ServicesA-34 117355-A Rev. ARSVP Interface ParametersParameter: EnablePath: Configuration Manager > Proto

Site Manager Parameters117355-A Rev. A A-35 Parameter: TTLPath: Configuration Manager > Protocols > IP > RSVP > InterfacesDefault: 0 (no TT

Configuring IP Multicasting and Multimedia ServicesA-36 117355-A Rev. AParameter: Udp RequiredPath: Configuration Manager > Protocols > IP > R

117355-A Rev. A B-1 Appendix B Multicasting ToolsThis appendix describes Bay Networks Technician Interface tools that allow you to troubleshoot a mult

Configuring IP Multicasting and Multimedia Servicesxviii 117355-A Rev. A OSI Open Systems InterconnectionOSPF Open Shortest Path First (Protocol)PPP

Configuring IP Multicasting and Multimedia ServicesB-2 117355-A Rev. AmtraceThe mtrace command allows you trace the branch of a multicast tree from a

Multicasting Tools117355-A Rev. A B-3 <source> is the source of the multicast tree.<destination> is the receiver for a particular multicas

Configuring IP Multicasting and Multimedia ServicesB-4 117355-A Rev. AmrinfoThe mrinfo command displays the capabilities of a DVMRP multicast router.

Multicasting Tools117355-A Rev. A B-5 rsvpThe rsvp command allows you to view information about RSVP and set global configuration parameters.Enter the

Configuring IP Multicasting and Multimedia ServicesB-6 117355-A Rev. A For example, the following rsvp command specifies the RSVP previous hops:$ rsvp

117355-A Rev. A Index-1Aaddressesmulticast, 1-3supplying for tunnel, 4-34Advertise Self parameter, 4-29, A-9BBandwidth, A-24Bandwidth Interval (Secs)

Index-2 117355-A Rev. Adisablingadvertisement of local networks, 4-29deterministic MOSPF, 5-5DVMRP circuit, 4-22DVMRP global, 4-9IGMP global, 3-5IGMP

117355-A Rev. A Index-3GGarbage Timeout parameter, 4-13, A-4Hhost groups, types of, 1-2IIGMP (Internet Group Management Protocol), 1-3adding a static

Index-4 117355-A Rev. AMOSPF (Multicasting Extensions to OSPF), 1-4deterministic hold-down feature, 6-3deterministic mode, 5-5enabling and disabling,

117355-A Rev. A Index-5RFC 1075, 4-36Round Robin multiline select algorithm, 8-12Route Delay parameter, 7-12, A-35Route Depend Probe parameter, 4-32,

About This Guide 117355-A Rev. A xix Bay Networks Customer Service You can purchase a support contract from your Bay Networks distributor or authori

Index-6 117355-A Rev. Atunnelsaddresses for, 4-34connecting neighbors, 4-2cost, 4-37enabling and disabling, 4-35forwarding table for, 4-39threshold va

ii 117355-A Rev. A4401 Great America Parkway 8 Federal StreetSanta Clara, CA 95054 Billerica, MA 01821 Copyright © 1997 Bay Networks, Inc. All rights

117355-A Rev. A 1-21 Chapter 1Multicasting and Multimedia Overview This overview covers the following topics: Topic Page Multicast Host Groups1-22Mul

Configuring IP Multicasting and Multimedia Services1-22 117355-A Rev. A Multicast Host Groups IP multicasting is a method for addressing, routing, a

Multicasting and Multimedia Overview 117355-A Rev. A 1-23 Multicast Addresses Each host group is assigned a unique multicast address. To reach all me

Configuring IP Multicasting and Multimedia Services1-24 117355-A Rev. A Multicast Extensions to OSPF Multicasting Extensions to OSPF (MOSPF) enhances

Multicasting and Multimedia Overview117355-A Rev. A 1-25Multicast Table ManagerThe Multicast Table Manager (MTM) makes it possible for different multi

117355-A Rev. A 2-27Chapter 2Starting Multicasting and Multimedia ServicesThis chapter explains how to perform a basic configuration -- that is, a confi

Configuring IP Multicasting and Multimedia Services2-28 117355-A Rev. AStarting IGMPWhen you configure any multicasting protocol described in this manu

Starting Multicasting and Multimedia Services117355-A Rev. A 2-29Starting DVMRPTo start DVMRP on the router:1. Configure a circuit on a slot and connec

117355-A Rev. A iii BY COPYING OR USING THE SOFTWARE, YOU ACCEPT ALL OF THE TERMS AND CONDITIONS OF THIS LICENSE AGREEMENT. THE TERMS EXPRESSED IN

Configuring IP Multicasting and Multimedia Services2-30 117355-A Rev. AStarting MOSPFMOSPF is a multicasting extension of OSPF. To enable MOSPF, you m

Starting Multicasting and Multimedia Services117355-A Rev. A 2-31Starting RSVPTo start RSVP on the router:1. Configure a circuit on a slot and connecto

Configuring IP Multicasting and Multimedia Services2-32 117355-A Rev. ARSVP is now running on the router with default values for all parameters. You c

117355-A Rev. A 3-1Chapter 3Customizing IGMPThis chapter covers the following topics describing the Internet Group Management Protocol (IGMP):Topic Pa

Configuring IP Multicasting and Multimedia Services3-2 117355-A Rev. AIGMP Concepts and TerminologyThe Internet Group Management Protocol (IGMP) allow

Customizing IGMP117355-A Rev. A 3-3IGMP Host ReportsA host that receives a membership query from a local router can respond with a host membership rep

Configuring IP Multicasting and Multimedia Services3-4 117355-A Rev. ACustomizing Global IGMPWhen you configure a multicasting protocol on the router,

Customizing IGMP117355-A Rev. A 3-5Enabling and Disabling IGMPWhen you configure IGMP on the router, IGMP is automatically enabled.You can use the BCC

Configuring IP Multicasting and Multimedia Services3-6 117355-A Rev. AEstimating the Number of GroupsBy default, IGMP estimates that 20 groups will be

Customizing IGMP117355-A Rev. A 3-7Using Site ManagerSite Manager Procedure You do this System responds1. In the Configuration Manager window, choose P

iv 117355-A Rev. A PROFITS ARISING OUT OF OR IN CONNECTION WITH THE PERFORMANCE OF THE SOFTWARE, EVEN IF BAY NETWORKS HAS BEEN ADVISED OF THE POSSIB

Configuring IP Multicasting and Multimedia Services3-8 117355-A Rev. ASpecifying a Version Threshold TimeBy default, 540 seconds can elapse after IGMP

Customizing IGMP117355-A Rev. A 3-9Configuring LoggingYou can use the BCC or Site Manager to specify the messages you want IGMP to log.Using the BCCNav

Configuring IP Multicasting and Multimedia Services3-10 117355-A Rev. AEnabling Join AcknowledgmentsBy default, IGMP does not respond with an acknowle

Customizing IGMP117355-A Rev. A 3-11Specifying a Forwarding Cache LimitBy default, IGMP allows a maximum of 512 entries in the MTM forwarding cache. T

Configuring IP Multicasting and Multimedia Services3-12 117355-A Rev. ACustomizing IGMP on an InterfaceWhen you add a multicast protocol to an IP inte

Customizing IGMP117355-A Rev. A 3-13Enabling and Disabling IGMP on an InterfaceWhen you add a multicasting protocol to an IP interface, IGMP is automa

Configuring IP Multicasting and Multimedia Services3-14 117355-A Rev. ASpecifying a Query RateBy default, IGMP sends a group membership query on the i

Customizing IGMP117355-A Rev. A 3-15Using Site ManagerSite Manager Procedure You do this System responds1. In the Configuration Manager window, choose

Configuring IP Multicasting and Multimedia Services3-16 117355-A Rev. ASpecifying a Membership Timeout IntervalBy default, a local group membership is

Customizing IGMP117355-A Rev. A 3-17Specifying a Designated Router Timeout IntervalBy default, 140 seconds can elapse after the last host query messag

117355-A Rev. A v Contents About This Guide Before You Begin ...

Configuring IP Multicasting and Multimedia Services3-18 117355-A Rev. ASpecifying a Maximum Host Response TimeBy default, a host must wait 100 tenths

Customizing IGMP117355-A Rev. A 3-19Specifying the Lifetime of a Cache Entry for MtraceIGMP creates entries in the forwarding cache specifically for th

Configuring IP Multicasting and Multimedia Services3-20 117355-A Rev. AConfiguring a Static Host EntryA network may include a member of a multicast gro

117355-A Rev. A 4-1Chapter 4Customizing DVMRPThis chapter describes the Distance Vector Multicast Routing Protocol (DVMRP).Topic PageDVMRP Concepts an

Configuring IP Multicasting and Multimedia Services4-2 117355-A Rev. ADVMRP Concepts and TerminologyDVMRP is a multicasting protocol that provides a m

Customizing DVMRP117355-A Rev. A 4-3ADBCUnicastrouterMulticastrouterEa1a2b1b2c1c2d1d2d3e1MulticasthostMulticastcircuitTunnelNet 1a3Net 3c3Net 8Net 6Ne

Configuring IP Multicasting and Multimedia Services4-4 117355-A Rev. AAt startup, a DVMRP multicasting router1. Initializes its routing table with inf

Customizing DVMRP117355-A Rev. A 4-5How DVMRP Chooses a RouteEach DVMRP interface is configured with a metric that indicates the cost of the hop. A rou

Configuring IP Multicasting and Multimedia Services4-6 117355-A Rev. ARouting TableTable 4-1 shows the principal items in a routing table entry.Note t

Customizing DVMRP117355-A Rev. A 4-7Shortest-Path TreesRoute information used by DVMRP is independent of any other routing information used by the rou

vi 117355-A Rev. A Chapter 3 Customizing IGMP IGMP Concepts and Terminology ...

Configuring IP Multicasting and Multimedia Services4-8 117355-A Rev. ACustomizing DVMRP GloballyWhen you start DVMRP on the router, DVMRP runs with de

Customizing DVMRP117355-A Rev. A 4-9Disabling and Reenabling DVMRPYou can use Site Manager to disable and reenable DVMRP on the router.Site Manager Pr

Configuring IP Multicasting and Multimedia Services4-10 117355-A Rev. ASetting the Update IntervalPeriodically, each multicasting router issues full o

Customizing DVMRP117355-A Rev. A 4-11Configuring Tree PruningIf no members are detected on a branch of the shortest path tree for a given group, DVMRP

Configuring IP Multicasting and Multimedia Services4-12 117355-A Rev. AConfiguring DVMRP TimersWhen a router adds or updates a route, it uses configurab

Customizing DVMRP117355-A Rev. A 4-13Setting the Garbage TimerThe garbage timer determines how long DVMRP advertises a route as unreachable before it

Configuring IP Multicasting and Multimedia Services4-14 117355-A Rev. ASetting the Neighbor Report TimerThe neighbor report timer specifies how long th

Customizing DVMRP117355-A Rev. A 4-15Setting the Leaf TimerThe leaf timer determines whether or not a network or tunnel local to a given interface is

Configuring IP Multicasting and Multimedia Services4-16 117355-A Rev. ASpecifying a Probe IntervalThe probe interval determines how often DVMRP sends

Customizing DVMRP117355-A Rev. A 4-17Specifying a Route Switch IntervalThe route switch interval specifies how long the router should wait, without rec

117355-A Rev. A viiSetting the Garbage Timer ...4-13Setting the Neighbor

Configuring IP Multicasting and Multimedia Services4-18 117355-A Rev. AEstimating the Number of RoutesBy default, DVMRP preallocates a routing table f

Customizing DVMRP117355-A Rev. A 4-19Logging Debugging MessagesBy default, DVMRP does not log debugging messages. You can use Site Manager to enable t

Configuring IP Multicasting and Multimedia Services4-20 117355-A Rev. ASpecifying the Maximum Number of RoutesBy default, DVMRP stores all learned rou

Customizing DVMRP117355-A Rev. A 4-21Enabling and Disabling Routing PoliciesBy default, routing policies are globally disabled.This parameter allows y

Configuring IP Multicasting and Multimedia Services4-22 117355-A Rev. ACustomizing DVMRP on a CircuitYou customize DVMRP on a circuit by modifying DVM

Customizing DVMRP117355-A Rev. A 4-23Disabling Multicast Support on a Unicast TunnelBy default, DVMRP• Propagates multicast routing information on the

Configuring IP Multicasting and Multimedia Services4-24 117355-A Rev. ACalculating a Route Metric and Comparing Route CostsBy default, a circuit has a

Customizing DVMRP117355-A Rev. A 4-25Specifying a ThresholdThreshold values control the scope of datagram delivery. The threshold is the minimum IP TT

Configuring IP Multicasting and Multimedia Services4-26 117355-A Rev. ABy default, DVMRP uses a TTL value of 1. You can use Site Manager to specify a

Customizing DVMRP117355-A Rev. A 4-27Configuring a Forwarding TableTo minimize the amount of time that it spends looking up routes, DVMRP creates and m

viii 117355-A Rev. A Specifying a Forwarding Timeout Value ...5-6Specifying a Maximu

Configuring IP Multicasting and Multimedia Services4-28 117355-A Rev. ABy default, DVMRP uses a TTL of 7200 seconds (two hours) for entries in the for

Customizing DVMRP117355-A Rev. A 4-29Disabling Advertisement of Local NetworksBy default, DVMRP advertises its own local networks over this circuit. U

Configuring IP Multicasting and Multimedia Services4-30 117355-A Rev. AAdvertising a Default RouteBy default, DVMRP does not supply a default route on

Customizing DVMRP117355-A Rev. A 4-31Listening for a Default RouteBy default, DVMRP does not listen for a default route on this circuit.You can use Si

Configuring IP Multicasting and Multimedia Services4-32 117355-A Rev. AAccepting a Report from a Nonstandard DVMRP NeighborBy default, DVMRP does not

Customizing DVMRP117355-A Rev. A 4-33Configuring a TunnelYou configure a DVMRP tunnel by setting parameters as described under the following topics:Topi

Configuring IP Multicasting and Multimedia Services4-34 117355-A Rev. ASupplying Addresses for the TunnelTo identify a unicast tunnel, you must supply

Customizing DVMRP117355-A Rev. A 4-35Disabling and Reenabling the TunnelWhen you configure a tunnel on a circuit, the tunnel is enabled by default. You

Configuring IP Multicasting and Multimedia Services4-36 117355-A Rev. AChoosing the Encapsulation ModeBy default, DVMRP encapsulates a tunneled multic

Customizing DVMRP117355-A Rev. A 4-37Specifying the CostBy default, DVMRP assigns a metric of 1 to a tunnel. You can use Site Manager to specify a cos

117355-A Rev. A ixSpecifying the LRM Policing Algorithm ...8-7Setting the Ban

Configuring IP Multicasting and Multimedia Services4-38 117355-A Rev. ASpecifying a TTLBy default, DVMRP assigns a TTL value of 1 to a tunnel. This va

Customizing DVMRP117355-A Rev. A 4-39Configuring a Forwarding Table for the TunnelBy default, DVMRP preallocates a forwarding table for 32 entries. You

Configuring IP Multicasting and Multimedia Services4-40 117355-A Rev. AWhen configuring a cache size, you must also keep in mind the TTL value for entr

Customizing DVMRP117355-A Rev. A 4-41Advertising a Default RouteBy default, DVMRP does not supply a default route on this tunnel.You can use Site Mana

Configuring IP Multicasting and Multimedia Services4-42 117355-A Rev. AListening for a Default RouteBy default, DVMRP does not listen for a default ro

Customizing DVMRP117355-A Rev. A 4-43Specifying an Encapsulation Mode for Control MessagesTo maintain backward compatibility with earlier versions of

Configuring IP Multicasting and Multimedia Services4-44 117355-A Rev. AAccepting a Report from a Nonstandard DVMRP NeighborBy default, DVMRP does not

117355-A Rev. A 5-1Chapter 5Customizing OSPF Multicast ExtensionsMOSPF is a multicasting extension of OSPF. You configure MOSPF by setting OSPF global

Configuring IP Multicasting and Multimedia Services5-2 117355-A Rev. AMOSPF OverviewMOSPF is a multicasting extension of the OSPF protocol that allows

Customizing OSPF Multicast Extensions117355-A Rev. A 5-3Figure 5-1. OSPF Autonomous SystemsMOSPF supports four types of multicasting:• Intra-area mult