IN-578 | Cisco Systems 78-11741-02 guide

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Cisco IOS IP Configuration Guide

IN-578

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Cisco Systems 78-11741-02 manual IN-578

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Cisco IOS Configuration Guide Corporate Headquarters Cisco IOS IP Configuration Guide N T E N T S Iii IP Multicast IPC-4 Benefits IPC-35 Configuring the Default Router for the Client Vii Enabling the Cisco IOS Dhcp Client on Ethernet Interfaces Enabling Hsrp IPC-101 Viii Enabling CEF IPC-116 Slow Start IPC-137 Registration IPC-162 Routing Enabling HA Redundancy for a Physical Network IPC-172 Xii Configuring Interpacket Delay Xiii Enabling Ospf IPC-225 Xiv Changing Ospf Administrative Distance Example IPC-252 Configuring Integrated IS-IS Xvi BGP Multipath Support Xvii Indicating Backdoor Routes Xviii BGP Path Filtering by Neighbor Examples IPC-340 Xix Filtering Sources of Routing Information PIM Xxi Restrictions IPC-412 Xxii Xxiii IPC-430 SSM Operations IPC-460 Xxiv Bidirectional Group Tree Building IPC-474 Xxv Enabling PGM Host IPC-495 Xxvi Rgmp Overview Xxvii Xxviii About Cisco IOS Software Documentation Documentation ObjectivesAudience Documentation Organization Shows the Cisco IOS software documentation modules Xxx Xxxi Module DC/DR Module TC/TR Master Indexes Supporting Documents and ResourcesXxxii New and Changed Information Document ConventionsConvention Description Xxxiii Xxxiv Obtaining Documentation Documentation FeedbackWorld Wide Web Documentation CD-ROM Contacting TAC by Using the Cisco TAC Website Obtaining Technical AssistanceCisco.com Technical Assistance Center Contacting TAC by Telephone Xxxvii Xxxviii 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 Using the no and default Forms of Commands Xliii Saving Configuration Changes Filtering Output from the show and more CommandsBuilding configuration Xliv Using Feature Navigator Using Software Release NotesIdentifying Supported Platforms Xlv Xlvi IP Addressing and Services IP Overview IP 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 Disabling Classless Routing Behavior IPC-10 Enabling IP Processing on a Serial Interface IPC-11 Configuring Address Resolution Methods Establishing Address ResolutionRouterconfig-if# ip unnumbered type number Assigning an explicit IP address to the interface Defining a Static ARP Cache Globally associates an IP address with a media hardwareAddress in the ARP cache Were the owner of the specified IP address Setting ARP Encapsulations Enables proxy ARP on the interfaceEnabling Proxy ARP IPC-14 Configuring Local-Area Mobility Mapping Host Names to IP AddressesIPC-15 Assigning Host Names to IP Addresses Specifying the Domain NameIPC-16 Using the DNS to Discover ISO Clns Addresses Specifying a Name ServerEnabling the DNS IPC-17 Configuring HP Probe Proxy Name Requests Configuring the Next Hop Resolution ProtocolCisco Implementation of Nhrp IPC-18 IPC-19 Destination host Nhrp 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 Routerconfig-if# ip nhrp use usage-count Triggering Nhrp Based on Traffic ThresholdsIs attempted IPC-23 IPC-24 Controlling the Nhrp Packet Rate IPC-25 Suppressing Forward and Reverse Record Options Specifying the Nhrp Responder AddressIPC-26 Configuring a GRE Tunnel for Multipoint Operation Configuring Nhrp Server-Only ModeEnabling IP Routing IPC-27 Routing Assistance When IP Routing Is Disabled Default GatewayProxy ARP IPC-28 Icmp Router Discovery Protocol IPC-29 Configuring a Routing Process Enabling IP BridgingEnabling Integrated Routing and Bridging IPC-30 Configuring Broadcast Packet Handling IPC-31 Forwarding UDP broadcast packets, such as Bootp Routerconfig-if# ip helper-address addressForwarding UDP Broadcast Packets and Protocols On an interface Establishing an IP Broadcast Address Flooding IP BroadcastsEstablishes a different broadcast address other than Bit Address nethost Speeding Up Flooding of UDP Datagrams IPC-34 Configuring Network Address Translation NAT ApplicationsBenefits IPC-35 NAT Configuration Task List NAT TerminologyIPC-36 Translating Inside Source Addresses IPC-37 Configuring Static Translation Configuring Dynamic Translation with an Access ListIPC-38 Configuring Dynamic Translation with a Route Map Overloading an Inside Global AddressIPC-39 Defines a standard access list IPC-40 Translating Overlapping Addresses IPC-41 IPC-42 NAT Translating Overlapping Addresses Configuring Dynamic Translation Providing TCP Load DistributionIPC-43 1.127 IPC-44 Changing Translation Timeouts Changes the timeout value for dynamic addressTranslations that do not use overloading IPC-45 Monitoring and Maintaining NAT Deploying NAT Between an IP Phone and Cisco CallManagerIPC-46 Monitoring and Maintaining IP Addressing Clearing Caches, Tables, and DatabasesSpecifying the Format of Network Masks IPC-47 Displaying System and Network Statistics IPC-48 IP Addressing Examples Monitoring and Maintaining NhrpIPC-49 Serial Interfaces Configuration Example Router B ConfigurationRouter C Configuration Creating a Network from Separated Subnets Example IP Domains Example Dynamic Lookup ExampleHP Hosts on a Network Segment Example Logical Nbma Example IPC-52 Two Logical Nbma Networks over One Physical Nbma Network Nhrp over ATM Example IPC-53 Router a Configuration IPC-54 Changing the Rate for Triggering SVCs Example IPC-55 IPC-56 Interface Fddi1/0/0Interface ATM0/0.1 multipoint Applying Nhrp Rates to Specific Destinations Example IPC-57Ip nhrp network-id Ip nhrp trigger-svc 100 Interface Fddi4/0/0 Nhrp on a Multipoint Tunnel Example IPC-58 Router D Configuration Broadcasting ExamplesFlooded Broadcast Example IPC-59 Helper Addresses Example Flooding of IP Broadcasts ExampleIPC-60 Interface serial NAT Configuration Examples Following example shows the configurationFollowing sections show NAT configuration examples Dynamic Inside Source Translation Example Overloading 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 IPC-66 Dhcp Request for an IP Address from a Dhcp Server Dhcp Client Overview Dhcp Relay Agent OverviewIPC-67 Dhcp Configuration Task List Enabling the Cisco IOS Dhcp Server and Relay Agent FeaturesFeatures Routerconfig# service dhcp Configuring a Dhcp Address Pool Excluding IP AddressesDatabase transfers Dhcp clients Configuring the Dhcp Address Pool Subnet and Mask Configuring the Domain Name for the ClientIPC-70 Configuring Manual Bindings Configuring the NetBIOS Node Type for the ClientConfiguring the Default Router for the Client Configuring the Address Lease Time Command IPC-72 Configuring a Dhcp Server Boot File Configuring the Number of Ping PacketsConfiguring the Timeout Value for Ping Packets Enabling the Cisco IOS Dhcp Client on Ethernet Interfaces Eight IP addresses in one command line Exits Dhcp pool configuration modeImport Dhcp option parameters into the Dhcp server database IPC-74 Configuring a Relay Agent Information Reforwarding Policy Enabling the Dhcp Smart-Relay FeatureMonitoring and Maintaining the Dhcp Server IPC-75 Configuration Examples IPC-76 Dhcp Database Agent Configuration Example Dhcp Address Pool Configuration ExampleDefault-router 172.16.1.100 172.16.1.101 lease Default-router 172.16.2.100 172.16.2.101 lease Manual Bindings Configuration Example On the Dhcp Server, the configuration is as followsCisco IOS Dhcp Client Example IPC-78 Dhcp Server Options Import and Autoconfiguration Example Central RouterRemote Router IPC-79 IPC-80 Configuring IP Services IP Services Task ListManaging IP Connections IPC-81 Routerconfig-if# ip unreachables Enabling Icmp Protocol Unreachable MessagesEnabling Icmp Redirect Messages Messages Enables the sending of Icmp mask reply messages Enabling Icmp Mask Reply MessagesUnderstanding Path MTU Discovery IPC-83 Setting the MTU Packet Size Routerconfig-if# ip mtu bytesEnabling IP Source Routing Sets the IP MTU packet size for an interface Configuring Simplex Ethernet Interfaces Configuring a DRP Server AgentAssigns a transmit interface to a receive-only interface IPC-85 Configuring Authentication of DRP Queries and Responses Enabling the DRP Server AgentLimiting the Source of DRP Queries IPC-86 Filtering IP Packets Using Access Lists IPC-87 Creating Standard and Extended Access Lists Using Numbers IPC-88 IPC-89 IPC-90 Creating Standard and Extended Access Lists Using Names IPC-91 IPC-92 Specifying IP Extended Access Lists with Fragment Control IPC-93 If the Access-List Entry has Then IPC-94 Benefits of Fragment Control in an IP Extended Access List IPC-95 Enabling 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 Configuring the Hot Standby Router Protocol IPC-100 Enables the Hsrp Routerconfig-if# standby group-number ipEnabling Hsrp IPC-101 Configuring 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 Enabling Hsrp Support for Icmp Redirect Messages Verifying Hsrp Support for Mpls VPNsRedirects to Active Hsrp Routers IPC-105 IPC-106 Redirects to Passive Hsrp Routers Redirects to Non-HSRP RoutersPassive Hsrp Router Advertisements Redirects Not Sent Configuring IP Accounting Configuring Hsrp Support for Icmp Redirect MessagesIPC-108 Configuring IP MAC Accounting IPC-109 Configuring TCP Performance Parameters Configuring IP Precedence AccountingConfigures IP accounting based on the precedence IPC-110 Enables TCP header compression Routerconfig-if# ip tcpCompressing TCP Packet Headers Expressing TCP Header Compression Setting the TCP Connection Attempt Time Enabling TCP Path MTU DiscoveryChanging the Number of TCP Header Compression Connections Can exist on an interface Enables Path MTU Discovery Enabling TCP Selective AcknowledgmentIPC-113 Setting the TCP Maximum Read Size Setting the TCP Window SizeEnabling TCP Time Stamp IPC-114 Configuring IP over WANs Setting the TCP Outgoing Queue SizeSets the TCP outgoing queue size IPC-115 Mnlb 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 Icmp Services Example Router 1 ConfigurationRouter 2 Configuration Simplex Ethernet Interfaces Example Numbered Access List Examples Ip access-group 2 outDRP Server Agent Example IPC-122 Turbo Access Control List Example Implicit Masks in Access Lists ExamplesIPC-123 Named Access List Example Extended Access List ExamplesIPC-124 Interface Ethernet0/5 IP Extended Access List with Fragment Control Example Time Range Applied to an IP Access List ExampleCommented IP Access List Entry Examples Interface ethernet Ip access-group strict IP Accounting Example Hsrp Load Sharing ExampleIPC-126 Deny tcp 171.69.0.0 0.0.255.255 any eq telnet No Switch or Learning Bridge Present Example Switch or Learning Bridge Present ExampleHsrp MAC Refresh Interval Examples IPC-127 Primary Router Configuration Backup Router ConfigurationHsrp MIB Trap Example Hsrp Support for Mpls VPNs Example Router PE1 Configuration Router PE2 ConfigurationHsrp Support for Icmp Redirect Messages Example IPC-129 Forwarding Agent Configuration for FA2 Example Mnlb Forwarding Agent ExamplesIPC-130 Services Manager Configuration for SM Example IPC-131 Failover ip address 0.0.0.0 failover Password cisco No snmp-server location Casa service-manager portIPC-132 Ip address 172.26.56.19 Configuring Server Load Balancing IPC-133 IOS SLB Functions and Capabilities IPC-134 Weighted Round Robin Weighted Least ConnectionsAlgorithms for Server Load Balancing IPC-135 Content Flow Monitor Support Port-Bound ServersClient-Assigned Load Balancing Sticky Connections Delayed Removal of TCP Connection Context TCP Session ReassignmentAutomatic Server Failure Detection Automatic Unfail Dynamic Feedback Protocol for IOS SLB Alternate IP AddressesTransparent Web Cache Balancing IPC-138 Redundancy Enhancement-Stateless Backup RestrictionsIPC-139 IOS SLB Configuration Task List IPC-140 Specifying a Server Farm Specifying a Load-Balancing AlgorithmIPC-141 Configuring Real Server Attributes Specifying a Bind IDSpecifying a Real Server IPC-142 Enabling the Real Server for Service Configuring Virtual Server AttributesSpecifying a Virtual Server Associating a Virtual Server with a Server Farm Adjusting Virtual Server Values Enabling the Virtual Server for ServicePreventing Advertisement of Virtual Server Address IPC-144 Configuring IOS SLB Dynamic Feedback Protocol Configuring NATImplementing IOS SLB Stateless Backup How IOS SLB Stateless Backup Works Configuring IOS SLB Stateless Backup IPC-146 Verifying the IOS SLB Stateless Backup Configuration Customizing Group AttributesIPC-147 Verifying IOS SLB Installation Verifying IOS SLBIPC-148 10.10.10.1223 Verifying Server Failure Detection Verify that the the connection counts are increasingIPC-149 Troubleshooting IOS SLB Question AnswerIPC-150 Monitoring and Maintaining IOS SLB IPC-151 IOS SLB Network Configuration Example IPC-152 NAT Configuration Example IPC-153 Configuration statements for Switch B are as follows Configuration statements for Switch C are as followsIPC-154 Hsrp Configuration Example IPC-155 Configuration 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 Configuring Mobile IP Why is Mobile IP Needed?Mobile IP Overview IPC-159 Mobile IP Components IPC-160 How Mobile IP Works Agent DiscoveryIPC-161 Registration RoutingIPC-162 Mobile IP Security IPC-163 Storing Security Associations IPC-164 Home Agent Redundancy Storing SAs on AAAHsrp Groups How HA Redundancy Works Prerequisites IPC-166 Mobile IP Configuration Task List Enabling Home Agent ServicesIPC-167 Enabling Foreign Agent Services Configuring AAA in the Mobile IP EnvironmentIPC-168 Configuring Radius in the Mobile IP Environment Configuring TACACS+ in the Mobile IP EnvironmentVerifying Setup IPC-169 Mobile IP HA Redundancy Configuration Task List Monitoring and Maintaining Mobile IPShutting Down Mobile IP IPC-170 Enabling Mobile IP IPC-171 Enabling HA Redundancy for a Physical Network IPC-172 IPC-173 Defines the virtual networks. Repeat this step for Each virtual network. If the mobile node and homeAgent are on the same subnet, use the address Address option Verifying HA Redundancy IPC-175 Mobile IP Configuration Examples Home Agent Configuration ExampleMonitoring and Maintaining HA Redundancy IPC-176 Home Agent Using AAA Server Example IPC-177 Foreign Agent Configuration Example Mobile IP HA Redundancy Configuration ExamplesHome Agent Address Configuration Mobile Node Home Physical Network IPC-179 Repeat this command for each virtual HA Redundancy for Physical Networks ExampleNetworks IPC-180 HA1 Configuration IPC-181 HA2 Configuration IPC-182 Mobile Node and Home Agent on Same Subnet IPC-183 IPC-184 Interface loopback0 Ip address 10.0.0.10Ip mobile Ip mobile home-agent standby SanJoseHANet2 virtual-network IPC-185 IPC-186 IPC-187 Interface ethernet0 Ip address 1.0.0.2 IPC-188 Interface e0 IPC-189 IPC-190 IPC-191 IPC-192 IP Routing Protocols Page Configuring On-Demand Routing IPC-195 On-Demand Routing Configuration Task List Enabling ODRIPC-196 Reconfiguring CDP or ODR Timers Filtering ODR InformationFilters ODR information on the hub Router Using ODR with Dialer Mappings IPC-198 Configuring Routing Information Protocol IPC-199 RIP Configuration Task List Enabling RIPIPC-200 Allowing Unicast Updates for RIP Adjusting TimersApplying Offsets to Routing Metrics IPC-201 Specifying a RIP Version IPC-202 Enabling RIP Authentication RIP Route SummarizationIPC-203 IPC-204 Configuring Route Summarization on an Interface Restrictions to RIP Route SummarizationVerifying IP Route Summarization IPC-205 Disables automatic summarization Running Igrp and RIP ConcurrentlyDisabling Automatic Route Summarization IPC-206 Command Purposes Disabling the Validation of Source IP AddressesEnabling or Disabling Split Horizon IPC-207 Configuring Interpacket Delay Connecting RIP to a WANIPC-208 RIP Configuration Examples Example 1 Correct ConfigurationRoute Summarization Examples IPC-209 Example 2 Incorrect Configuration Two examples of configuring split horizon are providedSplit Horizon Examples Example Configuration for Router a Configuration for Router BConfiguration for Router C IPC-211 Address Family Timers Example IPC-212 Configuring Igrp Cisco Igrp ImplementationIPC-213 Igrp Configuration Task List Igrp UpdatesIPC-214 Allowing Unicast Updates for Igrp Creating the Igrp Routing ProcessIPC-215 Routerconfig-router# variance multiplier Defining Unequal-Cost Load BalancingControlling Traffic Distribution Defines the variance associated with a particular path Adjusting the Igrp Metric Weights Adjusts the Igrp metricRouterconfig-router# traffic-share balanced Distribute traffic proportionately to the ratios of metrics Disabling Holddown Enforcing a Maximum Network DiameterValidating Source IP Addresses IPC-218 Igrp Configuration Examples IPC-219 Igrp Feasible Successor Relationship Example IPC-220 Router Configuration a Router Configuration BRouter Configuration C IPC-221 IPC-222 Configuring Ospf Cisco Ospf ImplementationIPC-223 Ospf Configuration Task List IPC-224 Configuring Ospf Interface Parameters Enabling OspfIPC-225 Configuring Ospf over Different Physical Networks Configuring Your Ospf Network TypeSpecifies the authentication type for an interface Network segment Configuring Point-to-Multipoint, Broadcast Networks Configuring Ospf for Nonbroadcast NetworksIPC-227 Configuring Ospf Area Parameters Nonbroadcast mediaIPC-228 Configuring Ospf Nssa IPC-229 Configuring Route Summarization Between Ospf Areas Implementation ConsiderationsIPC-230 Generating a Default Route Creating Virtual LinksIPC-231 Configuring Lookup of DNS Names Controlling Default MetricsForcing the Router ID Choice with a Loopback Interface IPC-232 Changing the Ospf Administrative Distances Configuring Ospf on Simplex Ethernet InterfacesConfiguring Route Calculation Timers IPC-233 Configuring Ospf over On-Demand Circuits Enables Ospf operationConfigures Ospf on an on-demand circuit Routerconfig# interface interface-type Sends syslog message when an Ospf neighbor goes up or down Routerconfig-router# log-adjacency-changesLogging Neighbors Going Up or Down Changing the LSA Group Pacing LSA Group Pacing With Multiple Timers Original LSA BehaviorIPC-236 Routerconfig-router# timers lsa-group-pacing Blocking Ospf LSA FloodingChanges the group pacing of LSAs IPC-237 Routerconfig-router# ignore lsa mospf Reducing LSA FloodingIgnoring Mospf LSA Packets Mospf LSA packets Displaying Ospf Update Packet Pacing IPC-239 Monitoring and Maintaining Ospf IPC-240 Ospf Configuration Examples Ospf Point-to-Multipoint ExampleIPC-241 Mollie Configuration Neon ConfigurationPlatty Configuration IPC-242 Jelly Configuration Route information in the first configuration is as followsOspf Point-to-Multipoint, Broadcast Example IPC-243 Ospf Point-to-Multipoint, Nonbroadcast Example Variable-Length Subnet Masks ExampleIPC-244 Basic Ospf Configuration Examples Ospf Routing and Route Redistribution ExamplesIPC-245 Complex Internal Router, ABR, and ASBRs Example IPC-246 This configuration, five routers are configured with Ospf IPC-247 IPC-248 Complex Ospf Configuration for ABR Examples IPC-249Neighbor 11.0.0.6 remote-as Following configuration Ospf is on network Following configuration Igrp autonomous system 200 is onRoute Map Examples IPC-250 IPC-251 Router rip Redistribute ospf 109 route-mapRouter bgp Redistribute ospf 109 route-map Router isis Changing Ospf Administrative Distance Example IPC-252 Ospf over On-Demand Routing Example IPC-253 IPC-254 Dialer-list 1 protocol ip permit LSA Group Pacing Example Block LSA Flooding ExampleIgnore Mospf LSA Packets Example IPC-255 IPC-256 Configuring Eigrp Cisco Eigrp ImplementationIPC-257 IPC-258 Eigrp Configuration Task List Enables an Eigrp routing process in globalEnabling Eigrp Associates networks with an Eigrp routing process Configuring the Percentage of Link Bandwidth Used Adjusting the Eigrp Metric WeightsMaking the Transition from Igrp to Eigrp Logging Eigrp Neighbor Adjacency Changes Mismatched K Values IPC-261 Disabling Route Summarization Goodbye MessageIPC-262 Value mismatch Configuring Summary Aggregate Addresses Configuring Floating Summary RoutesConfigures a summary aggregate address IPC-263 IPC-264 10.1.1.0/24 0.0/0 Router-A Router-B Router-C Configuring Eigrp Route Authentication Configure an interface type and enter interfaceEnables MD5 authentication in Eigrp packets IPC-265 Configuring Eigrp Protocol-Independent Parameters IPC-266 Configures the hello interval for an Eigrp routing Configures the hold time for an Eigrp routing processDisabling Split Horizon Process Configuring Eigrp Stub Routing IPC-268 Dual-Homed Remote Topology IPC-269 IPC-270 IPC-271 Eigrp Stub Routing Configuration Task List Configuring Eigrp Stub RoutingMonitoring and Maintaining Eigrp Verifying Eigrp Stub Routing Eigrp Configuration Examples Route Summarization ExampleIPC-273 IPC-274 Route Authentication Example IPC-275Infinite Exit Key Key-string Stub Routing Example IPC-276Eigrp stub connected static Configuring Integrated IS-IS IS-IS Configuration Task ListEnabling IS-IS and Assigning Areas IPC-277 Routerconfig# router isis area tag IPC-278 IS-IS Interface Parameters Configuration Task List Enabling IP Routing for an Area on an InterfaceIPC-279 Configuring IS-IS Link-State Metrics Setting the Advertised Hello IntervalSetting the Advertised Csnp Interval IPC-280 Setting the Retransmission Interval Setting the LSP Transmissions IntervalSetting the Retransmission Throttle Interval IPC-281 Setting the Hello Multiplier Assigning a Password for an InterfaceSpecifying Designated Router Election Specifying the Interface Circuit Type Configuring Mesh Groups Limiting LSP FloodingBlocking Flooding on Specific Interfaces IPC-283 Miscellaneous IS-IS Parameters Configuration Task List Generating a Default RouteForces a default route into the IS-IS routing domain Specifying the System Type Configuring IS-IS Authentication Passwords Setting the Overload BitSummarizing Address Ranges IPC-285 Tuning LSP Interval and Lifetime Routerconfig-router# set-overload-bitChanging the Routing Level for an Area Sets the overload bit Router Config-router# max-lsp-lifetime Partial Route Computation PRCSets the LSP refresh interval Router’s database without being refreshed Modifying the Output of show Commands IPC-288 IS-IS Configuration Examples Enabling IS-IS Configuration ExampleMonitoring IS-IS IPC-289 Multiarea IS-IS Configuration for Clns Network Example IPC-290 IS-IS Throttle Timers Example IPC-291Router isis BB IPC-292 Configuring BGP Cisco BGP ImplementationIPC-293 How BGP Selects Paths IPC-294 Basic BGP Configuration Task List BGP Multipath SupportIPC-295 Advanced BGP Configuration Task List IPC-296 Configuring Basic BGP Features Configuring BGP NeighborsEnabling BGP Routing IPC-297 Type of Reset Advantages Disadvantages Capability Policy updates without modificationManaging Routing Policy Changes Is memory-intensive Resetting a Router Using BGP Dynamic Inbound Soft Reset Keyword to specify that all connections be resetIPC-299 Resetting a Router Using BGP Outbound Soft Reset IPC-300 Verifying BGP Soft Reset IPC-301 Configuring BGP Interactions with IGPs Disables synchronization between BGP and an IGPTimer Starts Wakeups IPC-302 Configuring BGP Weights Disabling Autonomous System Path ComparisonIPC-303 Configuring BGP Route Filtering by Neighbor Configuring BGP Filtering Using Prefix ListsIPC-304 How the System Filters Traffic by Prefix List Creating a Prefix ListArgument Removes a prefix list with the name specified for list-name Configuring a Prefix List Entry To the entryIPC-306 Len ge-value = le-value = Deleting a Prefix List or Prefix List Entries Displaying Prefix EntriesIPC-307 Configuring BGP Path Filtering by Neighbor Disabling Next Hop Processing on BGP UpdatesClearing the Hit Count Table of Prefix List Entries IPC-308 Disabling Next Hop Processing Using a Specific Address Disabling Next Hop Processing Using a Route MapConfiguring BGP Next Hop Propagation IPC-309 Configuring the BGP Version Configuring the MED MetricIPC-310 Configuring Advanced BGP Features Using Route Maps to Modify UpdatesResetting eBGP Connections Immediately upon Link Failure Configuring Aggregate Addresses Configuring BGP Community Filtering Disabling Automatic Summarization of Network NumbersIPC-312 IPC-313 Configuring BGP Conditional Advertisement Specifying the Format for the CommunityIPC-314 BGP Conditional Advertisement Configuration Task List Conditional Advertisement of a Set of RoutesVerifying BGP Conditional Advertisement IPC-315 Configuring a Routing Domain Confederation BGP Conditional Advertisement Troubleshooting TipsConfigures a BGP confederation IPC-316 Configuring a Route Reflector Specifies the autonomous systems that belong toConfederation IPC-317 IPC-318 Simple BGP Model with a Route Reflector Configures the local router as a BGP route reflector Configures the cluster IDRouterconfig-router# bgp cluster-id cluster-id Specified neighbor as a client Configuring BGP Peer Groups Routerconfig-router# neighbor peer-group-nameCreating the Peer Group Creates a BGP peer group Assigning Options to the Peer Group IPC-321 Invokes MD5 authentication on a TCP connection to a BGP Configures the software to start storing received updatesIPC-322 Old Behavior New BehaviorIPC-323 000307 %TCP-6-BADAUTH No MD5 digest from 10.0.0.2179 to Disabling a Peer or Peer Group Making Neighbors Members of the Peer GroupIPC-324 Setting Administrative Distance Adjusting BGP TimersIndicating Backdoor Routes Modifying Parameters While Updating the IP Routing Table Changing the Default Local Preference Value Redistributing NetworkIPC-326 Selecting Path Based on MEDs from Other Autonomous Systems IPC-327 Configuring Route Dampening Minimizing FlappingIPC-328 Understanding Route Dampening Terms Enabling Route DampeningIPC-329 Changes the default values of route dampening factors Routerconfig# bgp dampening half-life reuseMonitoring and Maintaining BGP Route Dampening IPC-330 Monitoring and Maintaining BGP Clears route dampening information and unsuppressesSuppressed routes IPC-331 BGP Configuration Examples Logging Changes in Neighbor StatusIPC-332 BGP Route Map Examples IPC-333Router bgp Neighbor 1.1.1.1 route-map freddy out Router bgp Redistribute igrp 109 route-map igrp2bgp Set local-preference 25 set metric Set weight Set automatic-tag Ip as-path access-list 1 permitAccess-list 2 permit 0.0.0.0 IPC-334 IPC-335 Router bgp Neighbor 1.1.1.2 remote-asRouter bgp Neighbor 1.1.1.1 remote-as BGP Neighbor Configuration Examples IPC-336 BGP Prefix List Filtering Examples IPC-337Ip prefix-list abc deny 0.0.0.0/0 Ip prefix-list abc permit 35.0.0.0/8 IPC-338 BGP Soft Reset Examples Dynamic Inbound Soft Reset ExampleInbound Soft Reset Using Stored Information Example Added or Deleted Prefix List Entries Examples BGP 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 BGP Confederation Examples IPC-344 BGP Peer Group Examples IBGP Peer Group ExampleEBGP Peer Group Example IPC-345 TCP MD5 Authentication for BGP Examples Router bgp Neighbor 10.108.1.1 password bla4u00=2nkqIPC-346 Configuring Multiprotocol BGP Extensions for IP Multicast IPC-347 IPC-348 Incongruent Unicast and Multicast Routes Multiprotocol BGP Configuration Task List IPC-349 Configuring a Multiprotocol BGP Peer Understanding Nlri Keywords and Address FamiliesIPC-350 Configuring a Multiprotocol BGP Peer Group IPC-351 Advertising Routes into Multiprotocol BGP IPC-352 Configuring 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 Redistributing Dvmrp Routes into Multiprotocol BGP Redistributes multiprotocol BGP routes into Dvmrp with aRedistributed Redistributes Dvmrp routes into multiprotocol BGP Configuring a Multiprotocol BGP Route Reflector Configuring Aggregate Multiprotocol BGP AddressesIPC-356 Verifying Multiprotocol BGP Configuration and Operation Configures an aggregate address with variousOptions IPC-357 Multiprotocol BGP Configuration Examples Database informationIPC-358 Multiprotocol BGP Peer Examples Multiprotocol BGP Peer Group ExamplesIPC-359 Neighbor 10.1.1.1 activate Multiprotocol BGP Network Advertisement Examples Multiprotocol BGP Route Map ExamplesMultiprotocol BGP Route Redistribute Examples IPC-360 Multiprotocol BGP Route Reflector Examples Aggregate Multiprotocol BGP Address ExamplesIPC-361 Aggregate-address 172.16.0.0 255.0.0.0 as-set IPC-362 Configuring IP Routing Protocol-Independent Features Protocol-Independent Feature Task ListIPC-363 Using Variable-Length Subnet Masks Configuring Static RoutesRoute Source Default Distance IPC-364 Specifying Default Routes Specifying a Default NetworkIPC-365 Configuring Multi-Interface Load Splitting Changing the Maximum Number of PathsUnderstanding Gateway of Last Resort IPC-366 Redistributing Routing Information IPC-367 IPC-368 Understanding Supported Metric Translations IPC-369 Preventing Routing Updates Through an Interface Suppresses the sending of routing updates throughFiltering Routing Information Specified interface Configuring Default Passive Interfaces IPC-371 Controlling the Advertising of Routes in Routing Updates Controlling the Processing of Routing UpdatesFiltering Sources of Routing Information IPC-372 Defines a route map to control where packets are output Enabling Policy Routing PBRIdentifies the route map to use for policy routing IPC-373 IPC-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 Clearing Routes from the IP Routing Table IPC-378 Displays authentication key information Displays all route maps configured or only the oneVariable-Length Subnet Mask Example Specified Administrative Distance Examples Overriding Static Routes with Dynamic Protocols ExampleIPC-380 Ip route 10.0.0.0 255.0.0.0 172.18.3.4 Access-list 3 permit Static Routing Redistribution ExampleIgrp Redistribution Example IPC-381 RIP and Igrp Redistribution Example Eigrp Redistribution ExamplesIPC-382 Configuration for router R1 router bgp Network RIP and Eigrp Redistribution ExamplesSimple Redistribution Example Complex Redistribution Example IPC-384 Redistribute bgp Internal Router, ABR, and ASBRs Configuration Example IPC-385 IPC-386 Example Ospf Autonomous System Network Map IPC-387 Complex Ospf Configuration Example IPC-388Neighbor 172.16.1.6 remote-as Following configuration, Ospf is on network Following configuration Igrp autonomous system 1 is onIPC-389 Area 10.0.0.0 range 10.0.0.0 Default Metric Values Redistribution Example Policy Routing Route Map ExamplesIPC-390 IPC-391 Passive Interface Examples IPC-392Passive-interface ethernet 1 neighbor Default Passive Interface Example Policy Routing ExampleIPC-393 No ip directed-broadcast Interface Serial Following example configures a key chain named trees Set default interface null0Ip rip authentication key-chain trees media-type 10BaseT Key Management Examples IPC-395 Ip rip receive version 1 no keepalive IPC-396 IP Multicast Page Configuring IP Multicast Routing IPC-399 Cisco IP Multicast Routing Implementation IPC-400 Draft-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 Enabling Dense Mode Enabling IP Multicast RoutingEnabling PIM on an Interface IPC-403 Enabling Sparse Mode Enabling Sparse-Dense ModeEnables PIM dense mode on the interface Enables PIM sparse mode on the interface Configuring PIM Dense Mode State Refresh IPC-405 Configuring Auto-RP Configuring a Rendezvous PointConfigures the address of a PIM RP IPC-406 Setting Up Auto-RP in a New Internetwork Adding Auto-RP to an Existing Sparse Mode CloudChoosing a Default RP Announcing the RP and the Group Range It Serves Filtering Incoming RP Announcement Messages Verifying the Group-to-RP MappingStarting to Use IP Multicast Preventing Join Messages to False RPs Igmp Features Configuration Task List Configuring a Router to Be a Member of a GroupControlling Access to IP Multicast Groups IPC-409 Changing the Igmp Version Routers That Run Igmp VersionSelects the Igmp version that the router uses Igmp host-query messages Configuring Igmp Version Sets the Igmp query timeoutIPC-411 Restrictions IPC-412 Changing the Igmp Query Timeout Configuring the Router as a Statically Connected MemberRouterconfig-if# ip igmp Changing the Maximum Query Response Time Configuring Igmp Leave Latency Configures the interval at which the router sends IgmpConfigures the number of times that the router sends Igmp Group-specific or group-source-specific with IGMPv3 query Configuring the TTL Threshold Disabling Fast Switching of IP MulticastSAP Listener Support Configuration Task List Enabling SAP Listener Support Routerconfig-if# ip sap listen Limiting How Long a SAP Cache Entry ExistsAnnouncements IPC-416 Configuring PIM Version Functional addressIPC-417 PIM Version 2 Configuration Task List PrerequisitesIPC-418 Configuring PIM Version 2 Only Configuring PIM Sparse-Dense ModeDefining a PIM Sparse Mode Domain Border Interface Specifying the PIM Version Configuring Candidate BSRs Configuring Candidate RPsIPC-420 Deciding When to Configure a BSR Configures the router to be a candidate RPMaking the Transition to PIM Version IPC-421 Advanced PIM Features Configuration Task List Dense ModeSparse Mode Monitoring the RP Mapping Information IPC-423 Shared Tree and Source Tree Shortest-Path Tree Delaying the Use of PIM Shortest-Path Tree Understanding Reverse Path ForwardingShortest-path tree IPC-424 Assigning an RP to Multicast Groups Increasing Control over RPsModifying the PIM Router Query Message Interval IPC-425 Understanding the PIM Registering Process PIM Version 1 CompatibilityIPC-426 Configuring the IP Source Address of Register Messages Limiting the Rate of PIM Register MessagesEnabling Proxy Registering IPC-427 Enabling PIM Nonbroadcast Multiaccess Mode Enables PIM Nbma modeRouterconfig-if# ip pim nbma-mode IPC-428 Configuring an IP Multicast Static Route IPC-429 Configuring RTP Header Compression Configures an IP multicast static routeControlling the Transmission Rate to a Multicast Group Controls transmission rate to a multicast group IPC-431 RTP Header Compression Enabling RTP Header Compression on a Serial Interface Changing the Number of Header Compression ConnectionsIPC-432 Enabling Express RTP Header Compression IPC-433 IPC-434 IPC-435 Enabling IP Multicast over ATM Point-to-Multipoint VCs Limiting the Number of VCsIPC-436 Idling Policy How the Idling Policy WorksKeeping VCs from Idling Idled Configuring an IP Multicast Boundary Configuring an Intermediate IP Multicast HelperIPC-438 Storing IP Multicast Headers IPC-439 Configuring Stub IP Multicast Routing Use the show ip mpacket Exec command to display the bufferEnables Cgmp Enabling Cgmp Specified access list Messages to the specified IP address on a central routerIPC-441 Enabling Native Load Splitting Enabling Load Splitting Across TunnelsEqual-cost paths IPC-442 Configuring the Access Router Configuring the Router at the Opposite End of the TunnelIPC-443 Configuring Both Routers to RPF IPC-444 Verifying the Load Splitting IPC-445Tunnel0 Serial1 IPC-446 Using IP Multicast Heartbeat IPC-447 IP Multicast Configuration Examples PIM Dense Mode ExamplePIM Sparse Mode Example IPC-448 PIM Dense Mode State Refresh Example BSR Configuration ExamplePIM Version 2 Examples This section provides examples in the following sections Border Router Configuration Example RFC 2362 Interoperable Candidate RP ExampleIPC-450 Ip pim sparse-dense-mode Router ospf RTP Header Compression Examples IPC-451 IPC-452 No keepalive ClockrateNo ip route-cache Interface Ethernet2/1 Interface Serial4/0 Password lab login No scheduler max-task-time end IPC-453Version Ip route-cache IP Multicast over ATM Point-to-Multipoint VC Example IPC-454 Administratively Scoped Boundary Example IP Multicast Helper ExampleIPC-455 Atm pvc 2 0 16 ilmi Router A-First Hop Router Configuration Router C-Last Hop Router ConfigurationStub IP Multicast Example IPC-456 IPC-457 IP Multicast Load Splitting Across Equal-Cost Paths IP Multicast Heartbeat Example IPC-458Ip address 100.1.3.3 255.255.255.0 bandwidth Clock rate Ip multicast heartbeat ethernet0 224.1.1.1 1 1 Configuring Source Specific Multicast SSM Components OverviewIPC-459 How SSM Differs from Internet Standard Multicast SSM IP Address RangeSSM Operations IPC-460 IGMPv3 Host Signalling Igmp v3lite Host SignallingIPC-461 URD Host Signalling IPC-462 IPC-463 HTTP/1.1 200 OKBody Retrieved URL string successfully /body Html Denial of Service Attacks from Unwanted Sources Inhibited Easy to Install and ManageBenefits IP Multicast Address Management Not Required Ideal for Internet Broadcast Applications Legacy Applications Within the SSM Range RestrictionsIgmp v3lite and URD Require a Cisco IOS Last Hop Router Address Management Restrictions State Maintenance Limitations Igmp Snooping and Cgmp LimitationsURD Intercept URL Limitations Hsil Limitations SSM Configuration Task List Configuring SSMMonitoring SSM IPC-467 SSM Configuration Examples SSM with IGMPv3 ExampleSSM with Igmp v3lite and URD Example SSM Filtering Example IPC-469 IPC-470 Configuring Bidirectional PIM Bidir-PIM OverviewIPC-471 IPC-472 Unidirectional Shared Tree and Source Tree DF Election IPC-473 Bidir-PIM Configuration Task List Bidirectional Group Tree BuildingPacket Forwarding IPC-474 Configuring 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 IPC-478 Msdp Running Between RP Peers Msdp Configuration Task List IPC-479 Configuring an Msdp Peer Caching SA StateIPC-480 Configured, this command provides nothing Requesting Source Information from an Msdp PeerControlling Source Information That Your Router Originates Redistributing Sources Using an Msdp Filter Controlling Source Information That Your Router ForwardsFiltering SA Request Messages IPC-482 Using TTL to Limit the Multicast Data Sent in SA Messages Controlling Source Information That Your Router ReceivesIPC-483 Configuring a Default Msdp Peer IPC-484 Configuring an Msdp Mesh Group Shutting Down an Msdp PeerIPC-485 Including a Bordering PIM Dense Mode Region in Msdp Configures the router on the border between a dense modeSparse mode region to send SA messages about active sources Dense mode region. The IP address of the interface is used Monitoring and Maintaining Msdp IPC-487 Msdp Configuration Examples Default Msdp PeerLogical RP IPC-488 RouterA Configuration IPC-489 RouterB Configuration IPC-490No shutdown Router ospf RouterE Configuration IPC-491No shutdown Interface Loopback10 Hostname RouterE Ip routing IPC-492 Ip multicast boundary 20 no shutdown Router ospf Configuring PGM Host and Router Assist PGM OverviewIPC-493 Network Topology Using PGM Host and Router Assist IPC-494 PGM Host Configuration Task List Enabling PGM HostIPC-495 Verifying PGM Host Configuration Enabling PGM Host with a Virtual Host InterfaceEnabling PGM Host with a Physical Interface IPC-496 IPC-497 PGM Router Assist Configuration Task List Enabling PGM Router AssistIPC-498 Monitoring and Maintaining PGM Host Enabling PGM Router Assist with a Virtual Host InterfaceEnabling PGM Router Assist with a Physical Interface IPC-499 PGM Host and Router Assist Configuration Examples Monitoring and Maintaining PGM Router AssistIPC-500 PGM Host with a Virtual Interface Example PGM Host with a Physical Interface ExampleIPC-501 Ip pgm host Interface vif1 PGM Router Assist with a Virtual Interface Example PGM Router Assist with a Physical Interface ExampleIPC-502 Ip pgm router IPC-503 IPC-504 Configuring Unidirectional Link Routing Udlr OverviewIPC-505 Udlr Tunnel IPC-506 Igmp Proxy IPC-507 Udlr Tunnel Configuration Task List Configuring Udlr TunnelPrerequisite IPC-508 IPC-509 Igmp Udlr Configuration Task List Configuring the Igmp UDLConfigures Igmp on the interface to be unidirectional UDL interface Igmp Proxy Configuration Task List Changing the Distance for the Default RPF InterfaceMonitoring Igmp Udlr Displays Udlr information for directly connected multicast Configuring Igmp Proxy Verifying Igmp ProxyIPC-512 Udlr Configuration Examples Udlr Tunnel ExampleThis section provides the following Udlr examples IPC-513 Configure tunnel as send-only Udlr tunnel Igmp Udlr ExampleIPC-514 Ip multicast-routing Serial1 has receive-only capability Uplink Router uplink-rtr Configuration Downlink Router downlink-rtr ConfigurationIPC-515 Igmp Proxy Example IPC-516 IPC-517 Ip igmp unidirectional link Upstream Configuration Integrated Udlr Tunnel, Igmp UDLR, and Igmp Proxy ExampleIPC-518 Ip multicast-routing Interface Tunnel0 Downstream Configuration No cdp enableIPC-519 Ip pim sparse-mode Ip igmp unidirectional-link IPC-520 Using IP Multicast Tools Multicast Routing Monitor OverviewIPC-521 MRM Configuration Task List Configuring a Test Sender and Test ReceiverRestrictions IPC-522 Monitoring Multiple Groups IPC-523 Configuring a Manager Conducting an MRM TestIPC-524 Monitoring IP Multicast Routing Monitoring and Maintaining MRMIPC-525 MRM Configuration Example Test Sender ConfigurationTest Receiver Configuration Manager Configuration Protocol IP Multicast Routing OverviewIPC-527 Rgmp Overview IPC-528 IPC-529 Igmp IPC-530 PIM-SM Rgmp Rgmp Configuration Task List IPC-531 Verifying Rgmp Configuration Rgmp and enters interface configuration modeEnables Rgmp on a specified interface Enabling Rgmp Monitoring and Maintaining Rgmp IPC-533 Rgmp Configuration Example IPC-534 Switch a Configuration Switch B ConfigurationSwitch enable set igmp enable Switch enable set rgmp enable IPC-535 IPC-536 Configuring Dvmrp Interoperability Basic Dvmrp Interoperability Configuration Task ListIPC-537 Configuring Dvmrp Interoperability Responding to mrinfo RequestsDvmrp reports Injected into Dvmrp Configuring a Dvmrp Tunnel IPC-539 Advertising Network 0.0.0.0 to Dvmrp Neighbors Enabling Dvmrp Unicast RoutingAdvertises network 0.0.0.0 to Dvmrp neighbors IPC-540 Configuring a Dvmrp Summary Address Enables Dvmrp unicast routingLimiting the Number of Dvmrp Routes Advertised Changing the Dvmrp Route Threshold Disables Dvmrp automatic summarization Disabling Dvmrp Automatic summarizationAdding a Metric Offset to the Dvmrp Route Specifies a Dvmrp summary address Rejecting a Dvmrp Nonpruning Neighbor IPC-543 Configuring a Delay Between Dvrmp Reports Prevents peering with nonpruning Dvmrp neighborsIPC-544 Dvmrp Configuration Examples Monitoring and Maintaining DvmrpDvmrp Interoperability Example Dvmrp Tunnel Example Tunnel 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