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Cisco Systems 78-11741-02 manual IP Addressing and Services

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IP Addressing and Services

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Cisco Systems 78-11741-02 manual IP Addressing and Services

Contents

Corporate Headquarters Cisco IOS Configuration GuideCisco IOS IP Configuration Guide Iii N T E N T SIP Multicast IPC-4 Benefits IPC-35 Configuring the Default Router for the Client Enabling the Cisco IOS Dhcp Client on Ethernet Interfaces ViiViii Enabling Hsrp IPC-101Enabling CEF IPC-116 Slow Start IPC-137 Registration IPC-162 Routing Xii Enabling HA Redundancy for a Physical Network IPC-172Xiii Configuring Interpacket DelayXiv Enabling Ospf IPC-225Changing Ospf Administrative Distance Example IPC-252 Xvi Configuring Integrated IS-ISXvii BGP Multipath SupportXviii Indicating Backdoor RoutesXix BGP Path Filtering by Neighbor Examples IPC-340Filtering Sources of Routing Information Xxi PIMXxii Restrictions IPC-412IPC-430 XxiiiXxiv SSM Operations IPC-460Xxv Bidirectional Group Tree Building IPC-474Xxvi Enabling PGM Host IPC-495Xxvii Rgmp OverviewXxviii Documentation Organization About Cisco IOS Software DocumentationDocumentation Objectives AudienceXxx Shows the Cisco IOS software documentation modulesModule DC/DR Module TC/TR XxxiMaster Indexes Supporting Documents and ResourcesXxxii Xxxiii New and Changed InformationDocument Conventions Convention DescriptionXxxiv Documentation CD-ROM Obtaining DocumentationDocumentation Feedback World Wide WebTechnical Assistance Center Contacting TAC by Using the Cisco TAC WebsiteObtaining Technical Assistance Cisco.comXxxvii Contacting TAC by TelephoneXxxviii Using Cisco IOS Software Understanding Command ModesXxxix Mode Access Method Prompt Exit Method Command PurposeGetting Help Example How to Find Command Options Command CommentXli Xlii Xliii Using the no and default Forms of CommandsXliv Saving Configuration ChangesFiltering Output from the show and more Commands Building configurationXlv Using Feature NavigatorUsing Software Release Notes Identifying Supported PlatformsXlvi IP Overview IP Addressing and ServicesIP Routing Protocols Determining a Routing ProcessInterior and Exterior Gateway Protocols Multiple Routing Protocols Interior Gateway ProtocolsExterior Gateway Protocols IP Multicast IP Addressing and Services Page Configuring IP Addressing IP Addressing Task ListAssigning IP Addresses to Network Interfaces Routerconfig-if# ip address ip-address mask Class Address or Range StatusSets a primary IP address for an interface Assigning Multiple IP Addresses to Network Interfaces Enabling Use of Subnet ZeroAssigns multiple IP addresses to network interfaces IPC-10 Disabling Classless Routing BehaviorIPC-11 Enabling IP Processing on a Serial InterfaceAssigning an explicit IP address to the interface Configuring Address Resolution MethodsEstablishing Address Resolution Routerconfig-if# ip unnumbered type numberWere the owner of the specified IP address Defining a Static ARP CacheGlobally associates an IP address with a media hardware Address in the ARP cacheIPC-14 Setting ARP EncapsulationsEnables proxy ARP on the interface Enabling Proxy ARPConfiguring Local-Area Mobility Mapping Host Names to IP AddressesIPC-15 Assigning Host Names to IP Addresses Specifying the Domain NameIPC-16 IPC-17 Using the DNS to Discover ISO Clns AddressesSpecifying a Name Server Enabling the DNSIPC-18 Configuring HP Probe Proxy Name RequestsConfiguring the Next Hop Resolution Protocol Cisco Implementation of NhrpDestination host IPC-19Nhrp Configuration Task List Protocol OperationIPC-20 Statically Configuring a Next Hop Server Enabling Nhrp on an InterfaceIPC-21 Configuring Nhrp Authentication Controlling the Triggering of NhrpIPC-22 IPC-23 Routerconfig-if# ip nhrp use usage-countTriggering Nhrp Based on Traffic Thresholds Is attemptedIPC-24 IPC-25 Controlling the Nhrp Packet RateSuppressing Forward and Reverse Record Options Specifying the Nhrp Responder AddressIPC-26 IPC-27 Configuring a GRE Tunnel for Multipoint OperationConfiguring Nhrp Server-Only Mode Enabling IP RoutingIPC-28 Routing Assistance When IP Routing Is DisabledDefault Gateway Proxy ARPIPC-29 Icmp Router Discovery ProtocolIPC-30 Configuring a Routing ProcessEnabling IP Bridging Enabling Integrated Routing and BridgingIPC-31 Configuring Broadcast Packet HandlingOn an interface Forwarding UDP broadcast packets, such as BootpRouterconfig-if# ip helper-address address Forwarding UDP Broadcast Packets and ProtocolsBit Address nethost Establishing an IP Broadcast AddressFlooding IP Broadcasts Establishes a different broadcast address other thanIPC-34 Speeding Up Flooding of UDP DatagramsIPC-35 Configuring Network Address TranslationNAT Applications BenefitsNAT Configuration Task List NAT TerminologyIPC-36 IPC-37 Translating Inside Source AddressesConfiguring Static Translation Configuring Dynamic Translation with an Access ListIPC-38 Configuring Dynamic Translation with a Route Map Overloading an Inside Global AddressIPC-39 IPC-40 Defines a standard access listIPC-41 Translating Overlapping AddressesNAT Translating Overlapping Addresses IPC-42Configuring Dynamic Translation Providing TCP Load DistributionIPC-43 IPC-44 1.127IPC-45 Changing Translation TimeoutsChanges the timeout value for dynamic address Translations that do not use overloadingMonitoring and Maintaining NAT Deploying NAT Between an IP Phone and Cisco CallManagerIPC-46 IPC-47 Monitoring and Maintaining IP AddressingClearing Caches, Tables, and Databases Specifying the Format of Network MasksIPC-48 Displaying System and Network StatisticsIP Addressing Examples Monitoring and Maintaining NhrpIPC-49 Creating a Network from Separated Subnets Example Serial Interfaces Configuration ExampleRouter B Configuration Router C ConfigurationLogical Nbma Example IP Domains ExampleDynamic Lookup Example HP Hosts on a Network Segment ExampleTwo Logical Nbma Networks over One Physical Nbma Network IPC-52IPC-53 Nhrp over ATM ExampleIPC-54 Router a ConfigurationIPC-55 Changing the Rate for Triggering SVCs ExampleIPC-56 Interface Fddi1/0/0Interface ATM0/0.1 multipoint Interface Fddi4/0/0 Applying Nhrp Rates to Specific Destinations ExampleIPC-57 Ip nhrp network-id Ip nhrp trigger-svc 100IPC-58 Nhrp on a Multipoint Tunnel ExampleIPC-59 Router D ConfigurationBroadcasting Examples Flooded Broadcast ExampleInterface serial Helper Addresses ExampleFlooding of IP Broadcasts Example IPC-60Dynamic Inside Source Translation Example NAT Configuration ExamplesFollowing example shows the configuration Following sections show NAT configuration examplesOverloading Inside Global Addresses Example Translating Overlapping Address ExampleIPC-62 Ping Command Example TCP Load Distribution ExampleIPC-63 IPC-64 Configuring Dhcp Dhcp Server OverviewIPC-65 Dhcp Request for an IP Address from a Dhcp Server IPC-66Dhcp Client Overview Dhcp Relay Agent OverviewIPC-67 Routerconfig# service dhcp Dhcp Configuration Task ListEnabling the Cisco IOS Dhcp Server and Relay Agent Features FeaturesDhcp clients Configuring a Dhcp Address PoolExcluding IP Addresses Database transfersConfiguring the Dhcp Address Pool Subnet and Mask Configuring the Domain Name for the ClientIPC-70 Configuring the Address Lease Time Configuring Manual BindingsConfiguring the NetBIOS Node Type for the Client Configuring the Default Router for the ClientIPC-72 CommandEnabling the Cisco IOS Dhcp Client on Ethernet Interfaces Configuring a Dhcp Server Boot FileConfiguring the Number of Ping Packets Configuring the Timeout Value for Ping PacketsIPC-74 Eight IP addresses in one command lineExits Dhcp pool configuration mode Import Dhcp option parameters into the Dhcp server databaseIPC-75 Configuring a Relay Agent Information Reforwarding PolicyEnabling the Dhcp Smart-Relay Feature Monitoring and Maintaining the Dhcp ServerIPC-76 Configuration ExamplesDefault-router 172.16.2.100 172.16.2.101 lease Dhcp Database Agent Configuration ExampleDhcp Address Pool Configuration Example Default-router 172.16.1.100 172.16.1.101 leaseIPC-78 Manual Bindings Configuration ExampleOn the Dhcp Server, the configuration is as follows Cisco IOS Dhcp Client ExampleIPC-79 Dhcp Server Options Import and Autoconfiguration ExampleCentral Router Remote RouterIPC-80 IPC-81 Configuring IP ServicesIP Services Task List Managing IP ConnectionsMessages Routerconfig-if# ip unreachablesEnabling Icmp Protocol Unreachable Messages Enabling Icmp Redirect MessagesIPC-83 Enables the sending of Icmp mask reply messagesEnabling Icmp Mask Reply Messages Understanding Path MTU DiscoverySets the IP MTU packet size for an interface Setting the MTU Packet SizeRouterconfig-if# ip mtu bytes Enabling IP Source RoutingIPC-85 Configuring Simplex Ethernet InterfacesConfiguring a DRP Server Agent Assigns a transmit interface to a receive-only interfaceIPC-86 Configuring Authentication of DRP Queries and ResponsesEnabling the DRP Server Agent Limiting the Source of DRP QueriesIPC-87 Filtering IP Packets Using Access ListsIPC-88 Creating Standard and Extended Access Lists Using NumbersIPC-89 IPC-90 IPC-91 Creating Standard and Extended Access Lists Using NamesIPC-92 IPC-93 Specifying IP Extended Access Lists with Fragment ControlIPC-94 If the Access-List Entry has ThenIPC-95 Benefits of Fragment Control in an IP Extended Access ListEnabling Turbo Access Control Lists Configuring Turbo ACLsIPC-96 Applying Time Ranges to Access Lists Verifying Turbo ACLsIPC-97 Including Comments About Entries in Access Lists Applying Access ListsIPC-98 Controlling Access to a Line or Interface Controlling Dialer FunctionsIPC-99 IPC-100 Configuring the Hot Standby Router ProtocolIPC-101 Enables the HsrpRouterconfig-if# standby group-number ip Enabling HsrpConfiguring Hsrp Group Attributes Changing the Hsrp MAC Refresh IntervalIPC-102 Enabling Hsrp MIB Traps Enabling Hsrp Support for Mpls VPNsIPC-103 Defining VPNs Enabling HsrpIPC-104 IPC-105 Enabling Hsrp Support for Icmp Redirect MessagesVerifying Hsrp Support for Mpls VPNs Redirects to Active Hsrp RoutersIPC-106 Redirects Not Sent Redirects to Passive Hsrp RoutersRedirects to Non-HSRP Routers Passive Hsrp Router AdvertisementsConfiguring IP Accounting Configuring Hsrp Support for Icmp Redirect MessagesIPC-108 IPC-109 Configuring IP MAC AccountingIPC-110 Configuring TCP Performance ParametersConfiguring IP Precedence Accounting Configures IP accounting based on the precedenceExpressing TCP Header Compression Enables TCP header compressionRouterconfig-if# ip tcp Compressing TCP Packet HeadersCan exist on an interface Setting the TCP Connection Attempt TimeEnabling TCP Path MTU Discovery Changing the Number of TCP Header Compression ConnectionsEnables Path MTU Discovery Enabling TCP Selective AcknowledgmentIPC-113 IPC-114 Setting the TCP Maximum Read SizeSetting the TCP Window Size Enabling TCP Time StampIPC-115 Configuring IP over WANsSetting the TCP Outgoing Queue Size Sets the TCP outgoing queue sizeMnlb Forwarding Agent Configuration Task List Enabling CEFIPC-116 Enabling NetFlow Switching Enabling IP Multicast RoutingIPC-117 Configuring the Router as a Forwarding Agent Monitoring and Maintaining the IP NetworkIPC-118 Clearing the Access List Counters Monitoring and Maintaining the DRP Server AgentIPC-119 IP Services Configuration Examples Monitoring the Mnlb Forwarding AgentIPC-120 Simplex Ethernet Interfaces Example Icmp Services ExampleRouter 1 Configuration Router 2 ConfigurationIPC-122 Numbered Access List ExamplesIp access-group 2 out DRP Server Agent ExampleTurbo Access Control List Example Implicit Masks in Access Lists ExamplesIPC-123 Interface Ethernet0/5 Named Access List ExampleExtended Access List Examples IPC-124Interface ethernet Ip access-group strict IP Extended Access List with Fragment Control ExampleTime Range Applied to an IP Access List Example Commented IP Access List Entry ExamplesDeny tcp 171.69.0.0 0.0.255.255 any eq telnet IP Accounting ExampleHsrp Load Sharing Example IPC-126IPC-127 No Switch or Learning Bridge Present ExampleSwitch or Learning Bridge Present Example Hsrp MAC Refresh Interval ExamplesHsrp Support for Mpls VPNs Example Primary Router ConfigurationBackup Router Configuration Hsrp MIB Trap ExampleIPC-129 Router PE1 ConfigurationRouter PE2 Configuration Hsrp Support for Icmp Redirect Messages ExampleForwarding Agent Configuration for FA2 Example Mnlb Forwarding Agent ExamplesIPC-130 IPC-131 Services Manager Configuration for SM ExampleIp address 172.26.56.19 Failover ip address 0.0.0.0 failover Password ciscoNo snmp-server location Casa service-manager port IPC-132IPC-133 Configuring Server Load BalancingIPC-134 IOS SLB Functions and CapabilitiesIPC-135 Weighted Round RobinWeighted Least Connections Algorithms for Server Load BalancingSticky Connections Content Flow Monitor SupportPort-Bound Servers Client-Assigned Load BalancingAutomatic Unfail Delayed Removal of TCP Connection ContextTCP Session Reassignment Automatic Server Failure DetectionIPC-138 Dynamic Feedback Protocol for IOS SLBAlternate IP Addresses Transparent Web Cache BalancingRedundancy Enhancement-Stateless Backup RestrictionsIPC-139 IPC-140 IOS SLB Configuration Task ListSpecifying a Server Farm Specifying a Load-Balancing AlgorithmIPC-141 IPC-142 Configuring Real Server AttributesSpecifying a Bind ID Specifying a Real ServerAssociating a Virtual Server with a Server Farm Enabling the Real Server for ServiceConfiguring Virtual Server Attributes Specifying a Virtual ServerIPC-144 Adjusting Virtual Server ValuesEnabling the Virtual Server for Service Preventing Advertisement of Virtual Server AddressHow IOS SLB Stateless Backup Works Configuring IOS SLB Dynamic Feedback ProtocolConfiguring NAT Implementing IOS SLB Stateless BackupIPC-146 Configuring IOS SLB Stateless BackupVerifying the IOS SLB Stateless Backup Configuration Customizing Group AttributesIPC-147 10.10.10.1223 Verifying IOS SLB InstallationVerifying IOS SLB IPC-148Verifying Server Failure Detection Verify that the the connection counts are increasingIPC-149 Troubleshooting IOS SLB Question AnswerIPC-150 IPC-151 Monitoring and Maintaining IOS SLBIPC-152 IOS SLB Network Configuration ExampleIPC-153 NAT Configuration ExampleConfiguration statements for Switch B are as follows Configuration statements for Switch C are as followsIPC-154 IPC-155 Hsrp Configuration ExampleConfiguration for Device a is as follows Configuration for Device B is as followsIPC-156 IOS SLB Stateless Backup Configuration Example IPC-157Interface FastEthernet Ip address 2.0.0.1 IPC-158 IPC-159 Configuring Mobile IPWhy is Mobile IP Needed? Mobile IP OverviewIPC-160 Mobile IP ComponentsHow Mobile IP Works Agent DiscoveryIPC-161 Registration RoutingIPC-162 IPC-163 Mobile IP SecurityIPC-164 Storing Security AssociationsHow HA Redundancy Works Home Agent RedundancyStoring SAs on AAA Hsrp GroupsIPC-166 PrerequisitesMobile IP Configuration Task List Enabling Home Agent ServicesIPC-167 Enabling Foreign Agent Services Configuring AAA in the Mobile IP EnvironmentIPC-168 IPC-169 Configuring Radius in the Mobile IP EnvironmentConfiguring TACACS+ in the Mobile IP Environment Verifying SetupIPC-170 Mobile IP HA Redundancy Configuration Task ListMonitoring and Maintaining Mobile IP Shutting Down Mobile IPIPC-171 Enabling Mobile IPIPC-172 Enabling HA Redundancy for a Physical NetworkIPC-173 Address option Defines the virtual networks. Repeat this step forEach virtual network. If the mobile node and home Agent are on the same subnet, use the addressIPC-175 Verifying HA RedundancyIPC-176 Mobile IP Configuration ExamplesHome Agent Configuration Example Monitoring and Maintaining HA RedundancyIPC-177 Home Agent Using AAA Server ExampleMobile Node Home Physical Network Foreign Agent Configuration ExampleMobile IP HA Redundancy Configuration Examples Home Agent Address ConfigurationIPC-179 IPC-180 Repeat this command for each virtualHA Redundancy for Physical Networks Example NetworksIPC-181 HA1 ConfigurationIPC-182 HA2 ConfigurationIPC-183 Mobile Node and Home Agent on Same SubnetIp mobile home-agent standby SanJoseHANet2 virtual-network IPC-184Interface loopback0 Ip address 10.0.0.10 Ip mobileIPC-185 IPC-186 Interface ethernet0 Ip address 1.0.0.2 IPC-187Interface e0 IPC-188IPC-189 IPC-190 IPC-191 IPC-192 IP Routing Protocols Page IPC-195 Configuring On-Demand RoutingOn-Demand Routing Configuration Task List Enabling ODRIPC-196 Router Reconfiguring CDP or ODR TimersFiltering ODR Information Filters ODR information on the hubIPC-198 Using ODR with Dialer MappingsIPC-199 Configuring Routing Information ProtocolRIP Configuration Task List Enabling RIPIPC-200 IPC-201 Allowing Unicast Updates for RIPAdjusting Timers Applying Offsets to Routing MetricsIPC-202 Specifying a RIP VersionEnabling RIP Authentication RIP Route SummarizationIPC-203 IPC-204 IPC-205 Configuring Route Summarization on an InterfaceRestrictions to RIP Route Summarization Verifying IP Route SummarizationIPC-206 Disables automatic summarizationRunning Igrp and RIP Concurrently Disabling Automatic Route SummarizationIPC-207 Command PurposesDisabling the Validation of Source IP Addresses Enabling or Disabling Split HorizonConfiguring Interpacket Delay Connecting RIP to a WANIPC-208 IPC-209 RIP Configuration ExamplesExample 1 Correct Configuration Route Summarization ExamplesExample Example 2 Incorrect ConfigurationTwo examples of configuring split horizon are provided Split Horizon ExamplesIPC-211 Configuration for Router aConfiguration for Router B Configuration for Router CIPC-212 Address Family Timers ExampleConfiguring Igrp Cisco Igrp ImplementationIPC-213 Igrp Configuration Task List Igrp UpdatesIPC-214 Allowing Unicast Updates for Igrp Creating the Igrp Routing ProcessIPC-215 Defines the variance associated with a particular path Routerconfig-router# variance multiplierDefining Unequal-Cost Load Balancing Controlling Traffic DistributionDistribute traffic proportionately to the ratios of metrics Adjusting the Igrp Metric WeightsAdjusts the Igrp metric Routerconfig-router# traffic-share balancedIPC-218 Disabling HolddownEnforcing a Maximum Network Diameter Validating Source IP AddressesIPC-219 Igrp Configuration ExamplesIPC-220 Igrp Feasible Successor Relationship ExampleIPC-221 Router Configuration aRouter Configuration B Router Configuration CIPC-222 Configuring Ospf Cisco Ospf ImplementationIPC-223 IPC-224 Ospf Configuration Task ListConfiguring Ospf Interface Parameters Enabling OspfIPC-225 Network segment Configuring Ospf over Different Physical NetworksConfiguring Your Ospf Network Type Specifies the authentication type for an interfaceConfiguring Point-to-Multipoint, Broadcast Networks Configuring Ospf for Nonbroadcast NetworksIPC-227 Configuring Ospf Area Parameters Nonbroadcast mediaIPC-228 IPC-229 Configuring Ospf NssaConfiguring Route Summarization Between Ospf Areas Implementation ConsiderationsIPC-230 Generating a Default Route Creating Virtual LinksIPC-231 IPC-232 Configuring Lookup of DNS NamesControlling Default Metrics Forcing the Router ID Choice with a Loopback InterfaceIPC-233 Changing the Ospf Administrative DistancesConfiguring Ospf on Simplex Ethernet Interfaces Configuring Route Calculation TimersRouterconfig# interface interface-type Configuring Ospf over On-Demand CircuitsEnables Ospf operation Configures Ospf on an on-demand circuitChanging the LSA Group Pacing Sends syslog message when an Ospf neighbor goes up or downRouterconfig-router# log-adjacency-changes Logging Neighbors Going Up or DownLSA Group Pacing With Multiple Timers Original LSA BehaviorIPC-236 IPC-237 Routerconfig-router# timers lsa-group-pacingBlocking Ospf LSA Flooding Changes the group pacing of LSAsMospf LSA packets Routerconfig-router# ignore lsa mospfReducing LSA Flooding Ignoring Mospf LSA PacketsIPC-239 Displaying Ospf Update Packet PacingIPC-240 Monitoring and Maintaining OspfOspf Configuration Examples Ospf Point-to-Multipoint ExampleIPC-241 IPC-242 Mollie ConfigurationNeon Configuration Platty ConfigurationIPC-243 Jelly ConfigurationRoute information in the first configuration is as follows Ospf Point-to-Multipoint, Broadcast ExampleOspf Point-to-Multipoint, Nonbroadcast Example Variable-Length Subnet Masks ExampleIPC-244 Basic Ospf Configuration Examples Ospf Routing and Route Redistribution ExamplesIPC-245 IPC-246 Complex Internal Router, ABR, and ASBRs ExampleIPC-247 This configuration, five routers are configured with OspfIPC-248 Complex Ospf Configuration for ABR Examples IPC-249Neighbor 11.0.0.6 remote-as IPC-250 Following configuration Ospf is on networkFollowing configuration Igrp autonomous system 200 is on Route Map ExamplesRouter isis IPC-251Router rip Redistribute ospf 109 route-map Router bgp Redistribute ospf 109 route-mapIPC-252 Changing Ospf Administrative Distance ExampleIPC-253 Ospf over On-Demand Routing ExampleDialer-list 1 protocol ip permit IPC-254IPC-255 LSA Group Pacing ExampleBlock LSA Flooding Example Ignore Mospf LSA Packets ExampleIPC-256 Configuring Eigrp Cisco Eigrp ImplementationIPC-257 IPC-258 Associates networks with an Eigrp routing process Eigrp Configuration Task ListEnables an Eigrp routing process in global Enabling EigrpLogging Eigrp Neighbor Adjacency Changes Configuring the Percentage of Link Bandwidth UsedAdjusting the Eigrp Metric Weights Making the Transition from Igrp to EigrpIPC-261 Mismatched K ValuesValue mismatch Disabling Route SummarizationGoodbye Message IPC-262IPC-263 Configuring Summary Aggregate AddressesConfiguring Floating Summary Routes Configures a summary aggregate address10.1.1.0/24 0.0/0 Router-A Router-B Router-C IPC-264IPC-265 Configuring Eigrp Route AuthenticationConfigure an interface type and enter interface Enables MD5 authentication in Eigrp packetsIPC-266 Configuring Eigrp Protocol-Independent ParametersProcess Configures the hello interval for an Eigrp routingConfigures the hold time for an Eigrp routing process Disabling Split HorizonIPC-268 Configuring Eigrp Stub RoutingIPC-269 Dual-Homed Remote TopologyIPC-270 IPC-271 Verifying Eigrp Stub Routing Eigrp Stub Routing Configuration Task ListConfiguring Eigrp Stub Routing Monitoring and Maintaining EigrpEigrp Configuration Examples Route Summarization ExampleIPC-273 IPC-274 Exit Key Key-string Route Authentication ExampleIPC-275 InfiniteStub Routing Example IPC-276Eigrp stub connected static IPC-277 Configuring Integrated IS-ISIS-IS Configuration Task List Enabling IS-IS and Assigning AreasIPC-278 Routerconfig# router isis area tagIS-IS Interface Parameters Configuration Task List Enabling IP Routing for an Area on an InterfaceIPC-279 IPC-280 Configuring IS-IS Link-State MetricsSetting the Advertised Hello Interval Setting the Advertised Csnp IntervalIPC-281 Setting the Retransmission IntervalSetting the LSP Transmissions Interval Setting the Retransmission Throttle IntervalSpecifying the Interface Circuit Type Setting the Hello MultiplierAssigning a Password for an Interface Specifying Designated Router ElectionIPC-283 Configuring Mesh GroupsLimiting LSP Flooding Blocking Flooding on Specific InterfacesSpecifying the System Type Miscellaneous IS-IS Parameters Configuration Task ListGenerating a Default Route Forces a default route into the IS-IS routing domainIPC-285 Configuring IS-IS Authentication PasswordsSetting the Overload Bit Summarizing Address RangesSets the overload bit Tuning LSP Interval and LifetimeRouterconfig-router# set-overload-bit Changing the Routing Level for an AreaRouter’s database without being refreshed Router Config-router# max-lsp-lifetimePartial Route Computation PRC Sets the LSP refresh intervalIPC-288 Modifying the Output of show CommandsIPC-289 IS-IS Configuration ExamplesEnabling IS-IS Configuration Example Monitoring IS-ISIPC-290 Multiarea IS-IS Configuration for Clns Network ExampleIS-IS Throttle Timers Example IPC-291Router isis BB IPC-292 Configuring BGP Cisco BGP ImplementationIPC-293 IPC-294 How BGP Selects PathsBasic BGP Configuration Task List BGP Multipath SupportIPC-295 IPC-296 Advanced BGP Configuration Task ListIPC-297 Configuring Basic BGP FeaturesConfiguring BGP Neighbors Enabling BGP RoutingIs memory-intensive Type of Reset Advantages DisadvantagesCapability Policy updates without modification Managing Routing Policy ChangesResetting a Router Using BGP Dynamic Inbound Soft Reset Keyword to specify that all connections be resetIPC-299 IPC-300 Resetting a Router Using BGP Outbound Soft ResetIPC-301 Verifying BGP Soft ResetIPC-302 Configuring BGP Interactions with IGPsDisables synchronization between BGP and an IGP Timer Starts WakeupsConfiguring BGP Weights Disabling Autonomous System Path ComparisonIPC-303 Configuring BGP Route Filtering by Neighbor Configuring BGP Filtering Using Prefix ListsIPC-304 Removes a prefix list with the name specified for list-name How the System Filters Traffic by Prefix ListCreating a Prefix List ArgumentLen ge-value = le-value = Configuring a Prefix List EntryTo the entry IPC-306Deleting a Prefix List or Prefix List Entries Displaying Prefix EntriesIPC-307 IPC-308 Configuring BGP Path Filtering by NeighborDisabling Next Hop Processing on BGP Updates Clearing the Hit Count Table of Prefix List EntriesIPC-309 Disabling Next Hop Processing Using a Specific AddressDisabling Next Hop Processing Using a Route Map Configuring BGP Next Hop PropagationConfiguring the BGP Version Configuring the MED MetricIPC-310 Configuring Aggregate Addresses Configuring Advanced BGP FeaturesUsing Route Maps to Modify Updates Resetting eBGP Connections Immediately upon Link FailureConfiguring BGP Community Filtering Disabling Automatic Summarization of Network NumbersIPC-312 IPC-313 Configuring BGP Conditional Advertisement Specifying the Format for the CommunityIPC-314 IPC-315 BGP Conditional Advertisement Configuration Task ListConditional Advertisement of a Set of Routes Verifying BGP Conditional AdvertisementIPC-316 Configuring a Routing Domain ConfederationBGP Conditional Advertisement Troubleshooting Tips Configures a BGP confederationIPC-317 Configuring a Route ReflectorSpecifies the autonomous systems that belong to ConfederationSimple BGP Model with a Route Reflector IPC-318Specified neighbor as a client Configures the local router as a BGP route reflectorConfigures the cluster ID Routerconfig-router# bgp cluster-id cluster-idCreates a BGP peer group Configuring BGP Peer GroupsRouterconfig-router# neighbor peer-group-name Creating the Peer GroupIPC-321 Assigning Options to the Peer GroupInvokes MD5 authentication on a TCP connection to a BGP Configures the software to start storing received updatesIPC-322 000307 %TCP-6-BADAUTH No MD5 digest from 10.0.0.2179 to Old BehaviorNew Behavior IPC-323Disabling a Peer or Peer Group Making Neighbors Members of the Peer GroupIPC-324 Modifying Parameters While Updating the IP Routing Table Setting Administrative DistanceAdjusting BGP Timers Indicating Backdoor RoutesChanging the Default Local Preference Value Redistributing NetworkIPC-326 IPC-327 Selecting Path Based on MEDs from Other Autonomous SystemsConfiguring Route Dampening Minimizing FlappingIPC-328 Understanding Route Dampening Terms Enabling Route DampeningIPC-329 IPC-330 Changes the default values of route dampening factorsRouterconfig# bgp dampening half-life reuse Monitoring and Maintaining BGP Route DampeningIPC-331 Monitoring and Maintaining BGPClears route dampening information and unsuppresses Suppressed routesBGP Configuration Examples Logging Changes in Neighbor StatusIPC-332 Router bgp Redistribute igrp 109 route-map igrp2bgp BGP Route Map ExamplesIPC-333 Router bgp Neighbor 1.1.1.1 route-map freddy outIPC-334 Set local-preference 25 set metric Set weightSet automatic-tag Ip as-path access-list 1 permit Access-list 2 permit 0.0.0.0IPC-335 Router bgp Neighbor 1.1.1.2 remote-asRouter bgp Neighbor 1.1.1.1 remote-as IPC-336 BGP Neighbor Configuration ExamplesIp prefix-list abc permit 35.0.0.0/8 BGP Prefix List Filtering ExamplesIPC-337 Ip prefix-list abc deny 0.0.0.0/0IPC-338 Added or Deleted Prefix List Entries Examples BGP Soft Reset ExamplesDynamic Inbound Soft Reset Example Inbound Soft Reset Using Stored Information ExampleBGP Synchronization Examples BGP Path Filtering by Neighbor ExamplesIPC-340 BGP Aggregate Route Examples BGP Community with Route Maps ExamplesIPC-341 IPC-342 Route-map bgpIp community-list 3 permit internet BGP Conditional Advertisement Configuration Examples IPC-343Route-map set-community permit 10 set community no-export IPC-344 BGP Confederation ExamplesIPC-345 BGP Peer Group ExamplesIBGP Peer Group Example EBGP Peer Group ExampleTCP MD5 Authentication for BGP Examples Router bgp Neighbor 10.108.1.1 password bla4u00=2nkqIPC-346 IPC-347 Configuring Multiprotocol BGP Extensions for IP MulticastIncongruent Unicast and Multicast Routes IPC-348IPC-349 Multiprotocol BGP Configuration Task ListConfiguring a Multiprotocol BGP Peer Understanding Nlri Keywords and Address FamiliesIPC-350 IPC-351 Configuring a Multiprotocol BGP Peer GroupIPC-352 Advertising Routes into Multiprotocol BGPConfiguring Route Maps for Multiprotocol BGP Prefixes Redistributing Prefixes into Multiprotocol BGPIPC-353 Configuring Dvmrp Interoperability with Multiprotocol BGP Redistributing Multiprotocol BGP Routes into DvmrpIPC-354 Redistributes Dvmrp routes into multiprotocol BGP Redistributing Dvmrp Routes into Multiprotocol BGPRedistributes multiprotocol BGP routes into Dvmrp with a RedistributedConfiguring a Multiprotocol BGP Route Reflector Configuring Aggregate Multiprotocol BGP AddressesIPC-356 IPC-357 Verifying Multiprotocol BGP Configuration and OperationConfigures an aggregate address with various OptionsMultiprotocol BGP Configuration Examples Database informationIPC-358 Neighbor 10.1.1.1 activate Multiprotocol BGP Peer ExamplesMultiprotocol BGP Peer Group Examples IPC-359IPC-360 Multiprotocol BGP Network Advertisement ExamplesMultiprotocol BGP Route Map Examples Multiprotocol BGP Route Redistribute ExamplesAggregate-address 172.16.0.0 255.0.0.0 as-set Multiprotocol BGP Route Reflector ExamplesAggregate Multiprotocol BGP Address Examples IPC-361IPC-362 Configuring IP Routing Protocol-Independent Features Protocol-Independent Feature Task ListIPC-363 IPC-364 Using Variable-Length Subnet MasksConfiguring Static Routes Route Source Default DistanceSpecifying Default Routes Specifying a Default NetworkIPC-365 IPC-366 Configuring Multi-Interface Load SplittingChanging the Maximum Number of Paths Understanding Gateway of Last ResortIPC-367 Redistributing Routing InformationIPC-368 IPC-369 Understanding Supported Metric TranslationsSpecified interface Preventing Routing Updates Through an InterfaceSuppresses the sending of routing updates through Filtering Routing InformationIPC-371 Configuring Default Passive InterfacesIPC-372 Controlling the Advertising of Routes in Routing UpdatesControlling the Processing of Routing Updates Filtering Sources of Routing InformationIPC-373 Defines a route map to control where packets are outputEnabling Policy Routing PBR Identifies the route map to use for policy routingIPC-374 Preverifying Next-Hop Availability Number NameIPC-375 Enabling Fast-Switched Policy Routing Displaying Route-Map Policy InformationIPC-376 Managing Authentication Keys Enabling Local Policy RoutingIPC-377 IPC-378 Clearing Routes from the IP Routing TableSpecified Displays authentication key informationDisplays all route maps configured or only the one Variable-Length Subnet Mask ExampleIp route 10.0.0.0 255.0.0.0 172.18.3.4 Administrative Distance ExamplesOverriding Static Routes with Dynamic Protocols Example IPC-380IPC-381 Access-list 3 permitStatic Routing Redistribution Example Igrp Redistribution ExampleRIP and Igrp Redistribution Example Eigrp Redistribution ExamplesIPC-382 Complex Redistribution Example Configuration for router R1 router bgp NetworkRIP and Eigrp Redistribution Examples Simple Redistribution ExampleRedistribute bgp IPC-384IPC-385 Internal Router, ABR, and ASBRs Configuration ExampleExample Ospf Autonomous System Network Map IPC-386IPC-387 Complex Ospf Configuration Example IPC-388Neighbor 172.16.1.6 remote-as Area 10.0.0.0 range 10.0.0.0 Following configuration, Ospf is on networkFollowing configuration Igrp autonomous system 1 is on IPC-389Default Metric Values Redistribution Example Policy Routing Route Map ExamplesIPC-390 IPC-391 Passive Interface Examples IPC-392Passive-interface ethernet 1 neighbor No ip directed-broadcast Interface Serial Default Passive Interface ExamplePolicy Routing Example IPC-393Key Management Examples Following example configures a key chain named treesSet default interface null0 Ip rip authentication key-chain trees media-type 10BaseTIp rip receive version 1 no keepalive IPC-395IPC-396 IP Multicast Page IPC-399 Configuring IP Multicast RoutingIPC-400 Cisco IP Multicast Routing ImplementationDraft-ietf-pim-v2-dm-03.txt, PIM Version 2 Dense Mode Igmp VersionsIPC-401 Basic IP Multicast Routing Configuration Task List Advanced IP Multicast Routing Configuration Task ListIPC-402 IPC-403 Enabling Dense ModeEnabling IP Multicast Routing Enabling PIM on an InterfaceEnables PIM sparse mode on the interface Enabling Sparse ModeEnabling Sparse-Dense Mode Enables PIM dense mode on the interfaceIPC-405 Configuring PIM Dense Mode State RefreshIPC-406 Configuring Auto-RPConfiguring a Rendezvous Point Configures the address of a PIM RPAnnouncing the RP and the Group Range It Serves Setting Up Auto-RP in a New InternetworkAdding Auto-RP to an Existing Sparse Mode Cloud Choosing a Default RPPreventing Join Messages to False RPs Filtering Incoming RP Announcement MessagesVerifying the Group-to-RP Mapping Starting to Use IP MulticastIPC-409 Igmp Features Configuration Task ListConfiguring a Router to Be a Member of a Group Controlling Access to IP Multicast GroupsIgmp host-query messages Changing the Igmp VersionRouters That Run Igmp Version Selects the Igmp version that the router usesConfiguring Igmp Version Sets the Igmp query timeoutIPC-411 IPC-412 RestrictionsChanging the Maximum Query Response Time Changing the Igmp Query TimeoutConfiguring the Router as a Statically Connected Member Routerconfig-if# ip igmpGroup-specific or group-source-specific with IGMPv3 query Configuring Igmp Leave LatencyConfigures the interval at which the router sends Igmp Configures the number of times that the router sends IgmpEnabling SAP Listener Support Configuring the TTL ThresholdDisabling Fast Switching of IP Multicast SAP Listener Support Configuration Task ListIPC-416 Routerconfig-if# ip sap listenLimiting How Long a SAP Cache Entry Exists AnnouncementsConfiguring PIM Version Functional addressIPC-417 PIM Version 2 Configuration Task List PrerequisitesIPC-418 Specifying the PIM Version Configuring PIM Version 2 OnlyConfiguring PIM Sparse-Dense Mode Defining a PIM Sparse Mode Domain Border InterfaceConfiguring Candidate BSRs Configuring Candidate RPsIPC-420 IPC-421 Deciding When to Configure a BSRConfigures the router to be a candidate RP Making the Transition to PIM VersionMonitoring the RP Mapping Information Advanced PIM Features Configuration Task ListDense Mode Sparse ModeShared Tree and Source Tree Shortest-Path Tree IPC-423IPC-424 Delaying the Use of PIM Shortest-Path TreeUnderstanding Reverse Path Forwarding Shortest-path treeIPC-425 Assigning an RP to Multicast GroupsIncreasing Control over RPs Modifying the PIM Router Query Message IntervalUnderstanding the PIM Registering Process PIM Version 1 CompatibilityIPC-426 IPC-427 Configuring the IP Source Address of Register MessagesLimiting the Rate of PIM Register Messages Enabling Proxy RegisteringIPC-428 Enabling PIM Nonbroadcast Multiaccess ModeEnables PIM Nbma mode Routerconfig-if# ip pim nbma-modeIPC-429 Configuring an IP Multicast Static RouteControls transmission rate to a multicast group Configuring RTP Header CompressionConfigures an IP multicast static route Controlling the Transmission Rate to a Multicast GroupRTP Header Compression IPC-431Enabling RTP Header Compression on a Serial Interface Changing the Number of Header Compression ConnectionsIPC-432 IPC-433 Enabling Express RTP Header CompressionIPC-434 IPC-435 Enabling IP Multicast over ATM Point-to-Multipoint VCs Limiting the Number of VCsIPC-436 Idled Idling PolicyHow the Idling Policy Works Keeping VCs from IdlingConfiguring an IP Multicast Boundary Configuring an Intermediate IP Multicast HelperIPC-438 IPC-439 Storing IP Multicast HeadersEnabling Cgmp Configuring Stub IP Multicast RoutingUse the show ip mpacket Exec command to display the buffer Enables CgmpSpecified access list Messages to the specified IP address on a central routerIPC-441 IPC-442 Enabling Native Load SplittingEnabling Load Splitting Across Tunnels Equal-cost pathsConfiguring the Access Router Configuring the Router at the Opposite End of the TunnelIPC-443 IPC-444 Configuring Both Routers to RPFSerial1 Verifying the Load SplittingIPC-445 Tunnel0IPC-446 IPC-447 Using IP Multicast HeartbeatIPC-448 IP Multicast Configuration ExamplesPIM Dense Mode Example PIM Sparse Mode ExampleThis section provides examples in the following sections PIM Dense Mode State Refresh ExampleBSR Configuration Example PIM Version 2 ExamplesIp pim sparse-dense-mode Router ospf Border Router Configuration ExampleRFC 2362 Interoperable Candidate RP Example IPC-450IPC-451 RTP Header Compression ExamplesInterface Serial4/0 IPC-452No keepalive Clockrate No ip route-cache Interface Ethernet2/1Ip route-cache Password lab login No scheduler max-task-time endIPC-453 VersionIPC-454 IP Multicast over ATM Point-to-Multipoint VC ExampleAtm pvc 2 0 16 ilmi Administratively Scoped Boundary ExampleIP Multicast Helper Example IPC-455IPC-456 Router A-First Hop Router ConfigurationRouter C-Last Hop Router Configuration Stub IP Multicast ExampleIP Multicast Load Splitting Across Equal-Cost Paths IPC-457Ip multicast heartbeat ethernet0 224.1.1.1 1 1 IP Multicast Heartbeat ExampleIPC-458 Ip address 100.1.3.3 255.255.255.0 bandwidth Clock rateConfiguring Source Specific Multicast SSM Components OverviewIPC-459 IPC-460 How SSM Differs from Internet Standard MulticastSSM IP Address Range SSM OperationsIGMPv3 Host Signalling Igmp v3lite Host SignallingIPC-461 IPC-462 URD Host SignallingIPC-463 HTTP/1.1 200 OKBody Retrieved URL string successfully /body Html IP Multicast Address Management Not Required Denial of Service Attacks from Unwanted Sources InhibitedEasy to Install and Manage BenefitsAddress Management Restrictions Ideal for Internet Broadcast ApplicationsLegacy Applications Within the SSM Range Restrictions Igmp v3lite and URD Require a Cisco IOS Last Hop RouterHsil Limitations State Maintenance LimitationsIgmp Snooping and Cgmp Limitations URD Intercept URL LimitationsIPC-467 SSM Configuration Task ListConfiguring SSM Monitoring SSMSSM Filtering Example SSM Configuration ExamplesSSM with IGMPv3 Example SSM with Igmp v3lite and URD ExampleIPC-469 IPC-470 Configuring Bidirectional PIM Bidir-PIM OverviewIPC-471 Unidirectional Shared Tree and Source Tree IPC-472IPC-473 DF ElectionIPC-474 Bidir-PIM Configuration Task ListBidirectional Group Tree Building Packet ForwardingConfiguring Bidir-PIM Verifying Bidirectional GroupsIPC-475 Bidir-PIM Configuration Example Monitoring and Maintaining Bidir-PIMIPC-476 Configuring Multicast Source Discovery Protocol How Msdp WorksIPC-477 Msdp Running Between RP Peers IPC-478IPC-479 Msdp Configuration Task ListConfiguring an Msdp Peer Caching SA StateIPC-480 Redistributing Sources Configured, this command provides nothingRequesting Source Information from an Msdp Peer Controlling Source Information That Your Router OriginatesIPC-482 Using an Msdp FilterControlling Source Information That Your Router Forwards Filtering SA Request MessagesUsing TTL to Limit the Multicast Data Sent in SA Messages Controlling Source Information That Your Router ReceivesIPC-483 IPC-484 Configuring a Default Msdp PeerConfiguring an Msdp Mesh Group Shutting Down an Msdp PeerIPC-485 Dense mode region. The IP address of the interface is used Including a Bordering PIM Dense Mode Region in MsdpConfigures the router on the border between a dense mode Sparse mode region to send SA messages about active sourcesIPC-487 Monitoring and Maintaining MsdpIPC-488 Msdp Configuration ExamplesDefault Msdp Peer Logical RPIPC-489 RouterA ConfigurationRouterB Configuration IPC-490No shutdown Router ospf Hostname RouterE Ip routing RouterE ConfigurationIPC-491 No shutdown Interface Loopback10Ip multicast boundary 20 no shutdown Router ospf IPC-492Configuring PGM Host and Router Assist PGM OverviewIPC-493 IPC-494 Network Topology Using PGM Host and Router AssistPGM Host Configuration Task List Enabling PGM HostIPC-495 IPC-496 Verifying PGM Host ConfigurationEnabling PGM Host with a Virtual Host Interface Enabling PGM Host with a Physical InterfaceIPC-497 PGM Router Assist Configuration Task List Enabling PGM Router AssistIPC-498 IPC-499 Monitoring and Maintaining PGM HostEnabling PGM Router Assist with a Virtual Host Interface Enabling PGM Router Assist with a Physical InterfacePGM Host and Router Assist Configuration Examples Monitoring and Maintaining PGM Router AssistIPC-500 Ip pgm host Interface vif1 PGM Host with a Virtual Interface ExamplePGM Host with a Physical Interface Example IPC-501Ip pgm router PGM Router Assist with a Virtual Interface ExamplePGM Router Assist with a Physical Interface Example IPC-502IPC-503 IPC-504 Configuring Unidirectional Link Routing Udlr OverviewIPC-505 IPC-506 Udlr TunnelIPC-507 Igmp ProxyIPC-508 Udlr Tunnel Configuration Task ListConfiguring Udlr Tunnel PrerequisiteIPC-509 UDL interface Igmp Udlr Configuration Task ListConfiguring the Igmp UDL Configures Igmp on the interface to be unidirectionalDisplays Udlr information for directly connected multicast Igmp Proxy Configuration Task ListChanging the Distance for the Default RPF Interface Monitoring Igmp UdlrConfiguring Igmp Proxy Verifying Igmp ProxyIPC-512 IPC-513 Udlr Configuration ExamplesUdlr Tunnel Example This section provides the following Udlr examplesIp multicast-routing Serial1 has receive-only capability Configure tunnel as send-only Udlr tunnelIgmp Udlr Example IPC-514Uplink Router uplink-rtr Configuration Downlink Router downlink-rtr ConfigurationIPC-515 IPC-516 Igmp Proxy ExampleIp igmp unidirectional link IPC-517Ip multicast-routing Interface Tunnel0 Upstream ConfigurationIntegrated Udlr Tunnel, Igmp UDLR, and Igmp Proxy Example IPC-518Ip pim sparse-mode Ip igmp unidirectional-link Downstream ConfigurationNo cdp enable IPC-519IPC-520 Using IP Multicast Tools Multicast Routing Monitor OverviewIPC-521 IPC-522 MRM Configuration Task ListConfiguring a Test Sender and Test Receiver RestrictionsIPC-523 Monitoring Multiple GroupsConfiguring a Manager Conducting an MRM TestIPC-524 Monitoring IP Multicast Routing Monitoring and Maintaining MRMIPC-525 Manager Configuration MRM Configuration ExampleTest Sender Configuration Test Receiver ConfigurationProtocol IP Multicast Routing OverviewIPC-527 IPC-528 Rgmp OverviewIgmp IPC-529PIM-SM Rgmp IPC-530IPC-531 Rgmp Configuration Task ListEnabling Rgmp Verifying Rgmp ConfigurationRgmp and enters interface configuration mode Enables Rgmp on a specified interfaceIPC-533 Monitoring and Maintaining RgmpIPC-534 Rgmp Configuration ExampleIPC-535 Switch a ConfigurationSwitch B Configuration Switch enable set igmp enable Switch enable set rgmp enableIPC-536 Configuring Dvmrp Interoperability Basic Dvmrp Interoperability Configuration Task ListIPC-537 Injected into Dvmrp Configuring Dvmrp InteroperabilityResponding to mrinfo Requests Dvmrp reportsIPC-539 Configuring a Dvmrp TunnelIPC-540 Advertising Network 0.0.0.0 to Dvmrp NeighborsEnabling Dvmrp Unicast Routing Advertises network 0.0.0.0 to Dvmrp neighborsChanging the Dvmrp Route Threshold Configuring a Dvmrp Summary AddressEnables Dvmrp unicast routing Limiting the Number of Dvmrp Routes AdvertisedSpecifies a Dvmrp summary address Disables Dvmrp automatic summarizationDisabling Dvmrp Automatic summarization Adding a Metric Offset to the Dvmrp RouteIPC-543 Rejecting a Dvmrp Nonpruning NeighborConfiguring a Delay Between Dvrmp Reports Prevents peering with nonpruning Dvmrp neighborsIPC-544 Dvmrp Tunnel Example Dvmrp Configuration ExamplesMonitoring and Maintaining Dvmrp Dvmrp Interoperability ExampleTunnel Mode dvmrp Interface ethernet IPC-546Unnumbered Ethernet Pim Dense-mode Tunnel Source Index Page IN-549 IN-550 IN-551 IN-552 IN-553 IN-554 IN-555 IN-556 IN-557 IN-558 IN-559 IN-560 IN-561 IN-562 IN-563 IN-564 IN-565 IN-566 IN-567 IN-568 IN-569 IN-570 IN-571 IN-572 IN-573 IN-574 IN-575 IN-576 IN-577 IN-578