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Cisco Systems 78-11741-02 manual IPC-158

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Configuring Server Load Balancing

Configuration Examples

Cisco IOS IP Configuration Guide

IPC-158

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Cisco Systems 78-11741-02 manual IPC-158

Contents

Cisco IOS Configuration Guide Corporate HeadquartersCisco IOS IP Configuration Guide N T E N T S IiiIP Multicast IPC-4 Benefits IPC-35 Configuring the Default Router for the Client Vii Enabling the Cisco IOS Dhcp Client on Ethernet InterfacesEnabling Hsrp IPC-101 ViiiEnabling CEF IPC-116 Slow Start IPC-137 Registration IPC-162 Routing Enabling HA Redundancy for a Physical Network IPC-172 XiiConfiguring Interpacket Delay XiiiEnabling Ospf IPC-225 XivChanging Ospf Administrative Distance Example IPC-252 Configuring Integrated IS-IS XviBGP Multipath Support XviiIndicating Backdoor Routes XviiiBGP Path Filtering by Neighbor Examples IPC-340 XixFiltering Sources of Routing Information PIM XxiRestrictions IPC-412 XxiiXxiii IPC-430SSM Operations IPC-460 XxivBidirectional Group Tree Building IPC-474 XxvEnabling PGM Host IPC-495 XxviRgmp Overview XxviiXxviii About Cisco IOS Software Documentation Documentation ObjectivesAudience Documentation OrganizationShows the Cisco IOS software documentation modules XxxXxxi Module DC/DR Module TC/TRMaster Indexes Supporting Documents and ResourcesXxxii New and Changed Information Document ConventionsConvention Description XxxiiiXxxiv Obtaining Documentation Documentation FeedbackWorld Wide Web Documentation CD-ROMContacting TAC by Using the Cisco TAC Website Obtaining Technical AssistanceCisco.com Technical Assistance CenterContacting TAC by Telephone XxxviiXxxviii 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 XliiiSaving Configuration Changes Filtering Output from the show and more CommandsBuilding configuration XlivUsing Feature Navigator Using Software Release NotesIdentifying Supported Platforms XlvXlvi IP Addressing and Services IP OverviewIP 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-10Enabling IP Processing on a Serial Interface IPC-11Configuring Address Resolution Methods Establishing Address ResolutionRouterconfig-if# ip unnumbered type number Assigning an explicit IP address to the interfaceDefining a Static ARP Cache Globally associates an IP address with a media hardwareAddress in the ARP cache Were the owner of the specified IP addressSetting ARP Encapsulations Enables proxy ARP on the interfaceEnabling Proxy ARP IPC-14Configuring 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-17Configuring HP Probe Proxy Name Requests Configuring the Next Hop Resolution ProtocolCisco Implementation of Nhrp IPC-18IPC-19 Destination hostNhrp 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-23IPC-24 Controlling the Nhrp Packet Rate IPC-25Suppressing 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-27Routing Assistance When IP Routing Is Disabled Default GatewayProxy ARP IPC-28Icmp Router Discovery Protocol IPC-29Configuring a Routing Process Enabling IP BridgingEnabling Integrated Routing and Bridging IPC-30Configuring Broadcast Packet Handling IPC-31Forwarding UDP broadcast packets, such as Bootp Routerconfig-if# ip helper-address addressForwarding UDP Broadcast Packets and Protocols On an interfaceEstablishing an IP Broadcast Address Flooding IP BroadcastsEstablishes a different broadcast address other than Bit Address nethostSpeeding Up Flooding of UDP Datagrams IPC-34Configuring Network Address Translation NAT ApplicationsBenefits IPC-35NAT Configuration Task List NAT TerminologyIPC-36 Translating Inside Source Addresses IPC-37Configuring 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-40Translating Overlapping Addresses IPC-41IPC-42 NAT Translating Overlapping AddressesConfiguring Dynamic Translation Providing TCP Load DistributionIPC-43 1.127 IPC-44Changing Translation Timeouts Changes the timeout value for dynamic addressTranslations that do not use overloading IPC-45Monitoring 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-47Displaying System and Network Statistics IPC-48IP Addressing Examples Monitoring and Maintaining NhrpIPC-49 Serial Interfaces Configuration Example Router B ConfigurationRouter C Configuration Creating a Network from Separated Subnets ExampleIP Domains Example Dynamic Lookup ExampleHP Hosts on a Network Segment Example Logical Nbma ExampleIPC-52 Two Logical Nbma Networks over One Physical Nbma NetworkNhrp over ATM Example IPC-53Router a Configuration IPC-54Changing the Rate for Triggering SVCs Example IPC-55IPC-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 Fddi4/0/0Nhrp on a Multipoint Tunnel Example IPC-58Router D Configuration Broadcasting ExamplesFlooded Broadcast Example IPC-59Helper Addresses Example Flooding of IP Broadcasts ExampleIPC-60 Interface serialNAT Configuration Examples Following example shows the configurationFollowing sections show NAT configuration examples Dynamic Inside Source Translation ExampleOverloading 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 ServerDhcp Client Overview Dhcp Relay Agent OverviewIPC-67 Dhcp Configuration Task List Enabling the Cisco IOS Dhcp Server and Relay Agent FeaturesFeatures Routerconfig# service dhcpConfiguring a Dhcp Address Pool Excluding IP AddressesDatabase transfers Dhcp clientsConfiguring 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 TimeCommand IPC-72Configuring 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 InterfacesEight IP addresses in one command line Exits Dhcp pool configuration modeImport Dhcp option parameters into the Dhcp server database IPC-74Configuring a Relay Agent Information Reforwarding Policy Enabling the Dhcp Smart-Relay FeatureMonitoring and Maintaining the Dhcp Server IPC-75Configuration Examples IPC-76Dhcp 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 leaseManual Bindings Configuration Example On the Dhcp Server, the configuration is as followsCisco IOS Dhcp Client Example IPC-78Dhcp Server Options Import and Autoconfiguration Example Central RouterRemote Router IPC-79IPC-80 Configuring IP Services IP Services Task ListManaging IP Connections IPC-81Routerconfig-if# ip unreachables Enabling Icmp Protocol Unreachable MessagesEnabling Icmp Redirect Messages MessagesEnables the sending of Icmp mask reply messages Enabling Icmp Mask Reply MessagesUnderstanding Path MTU Discovery IPC-83Setting the MTU Packet Size Routerconfig-if# ip mtu bytesEnabling IP Source Routing Sets the IP MTU packet size for an interfaceConfiguring Simplex Ethernet Interfaces Configuring a DRP Server AgentAssigns a transmit interface to a receive-only interface IPC-85Configuring Authentication of DRP Queries and Responses Enabling the DRP Server AgentLimiting the Source of DRP Queries IPC-86Filtering IP Packets Using Access Lists IPC-87Creating Standard and Extended Access Lists Using Numbers IPC-88IPC-89 IPC-90 Creating Standard and Extended Access Lists Using Names IPC-91IPC-92 Specifying IP Extended Access Lists with Fragment Control IPC-93If the Access-List Entry has Then IPC-94Benefits of Fragment Control in an IP Extended Access List IPC-95Enabling 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-100Enables the Hsrp Routerconfig-if# standby group-number ipEnabling Hsrp IPC-101Configuring 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-105IPC-106 Redirects to Passive Hsrp Routers Redirects to Non-HSRP RoutersPassive Hsrp Router Advertisements Redirects Not SentConfiguring IP Accounting Configuring Hsrp Support for Icmp Redirect MessagesIPC-108 Configuring IP MAC Accounting IPC-109Configuring TCP Performance Parameters Configuring IP Precedence AccountingConfigures IP accounting based on the precedence IPC-110Enables TCP header compression Routerconfig-if# ip tcpCompressing TCP Packet Headers Expressing TCP Header CompressionSetting the TCP Connection Attempt Time Enabling TCP Path MTU DiscoveryChanging the Number of TCP Header Compression Connections Can exist on an interfaceEnables Path MTU Discovery Enabling TCP Selective AcknowledgmentIPC-113 Setting the TCP Maximum Read Size Setting the TCP Window SizeEnabling TCP Time Stamp IPC-114Configuring IP over WANs Setting the TCP Outgoing Queue SizeSets the TCP outgoing queue size IPC-115Mnlb 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 ExampleNumbered Access List Examples Ip access-group 2 outDRP Server Agent Example IPC-122Turbo Access Control List Example Implicit Masks in Access Lists ExamplesIPC-123 Named Access List Example Extended Access List ExamplesIPC-124 Interface Ethernet0/5IP 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 strictIP Accounting Example Hsrp Load Sharing ExampleIPC-126 Deny tcp 171.69.0.0 0.0.255.255 any eq telnetNo Switch or Learning Bridge Present Example Switch or Learning Bridge Present ExampleHsrp MAC Refresh Interval Examples IPC-127Primary Router Configuration Backup Router ConfigurationHsrp MIB Trap Example Hsrp Support for Mpls VPNs ExampleRouter PE1 Configuration Router PE2 ConfigurationHsrp Support for Icmp Redirect Messages Example IPC-129Forwarding Agent Configuration for FA2 Example Mnlb Forwarding Agent ExamplesIPC-130 Services Manager Configuration for SM Example IPC-131Failover ip address 0.0.0.0 failover Password cisco No snmp-server location Casa service-manager portIPC-132 Ip address 172.26.56.19Configuring Server Load Balancing IPC-133IOS SLB Functions and Capabilities IPC-134Weighted Round Robin Weighted Least ConnectionsAlgorithms for Server Load Balancing IPC-135Content Flow Monitor Support Port-Bound ServersClient-Assigned Load Balancing Sticky ConnectionsDelayed Removal of TCP Connection Context TCP Session ReassignmentAutomatic Server Failure Detection Automatic UnfailDynamic Feedback Protocol for IOS SLB Alternate IP AddressesTransparent Web Cache Balancing IPC-138Redundancy Enhancement-Stateless Backup RestrictionsIPC-139 IOS SLB Configuration Task List IPC-140Specifying a Server Farm Specifying a Load-Balancing AlgorithmIPC-141 Configuring Real Server Attributes Specifying a Bind IDSpecifying a Real Server IPC-142Enabling the Real Server for Service Configuring Virtual Server AttributesSpecifying a Virtual Server Associating a Virtual Server with a Server FarmAdjusting Virtual Server Values Enabling the Virtual Server for ServicePreventing Advertisement of Virtual Server Address IPC-144Configuring IOS SLB Dynamic Feedback Protocol Configuring NATImplementing IOS SLB Stateless Backup How IOS SLB Stateless Backup WorksConfiguring IOS SLB Stateless Backup IPC-146Verifying the IOS SLB Stateless Backup Configuration Customizing Group AttributesIPC-147 Verifying IOS SLB Installation Verifying IOS SLBIPC-148 10.10.10.1223Verifying Server Failure Detection Verify that the the connection counts are increasingIPC-149 Troubleshooting IOS SLB Question AnswerIPC-150 Monitoring and Maintaining IOS SLB IPC-151IOS SLB Network Configuration Example IPC-152NAT Configuration Example IPC-153Configuration statements for Switch B are as follows Configuration statements for Switch C are as followsIPC-154 Hsrp Configuration Example IPC-155Configuration 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-159Mobile IP Components IPC-160How Mobile IP Works Agent DiscoveryIPC-161 Registration RoutingIPC-162 Mobile IP Security IPC-163Storing Security Associations IPC-164Home Agent Redundancy Storing SAs on AAAHsrp Groups How HA Redundancy WorksPrerequisites IPC-166Mobile 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-169Mobile IP HA Redundancy Configuration Task List Monitoring and Maintaining Mobile IPShutting Down Mobile IP IPC-170Enabling Mobile IP IPC-171Enabling HA Redundancy for a Physical Network IPC-172IPC-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 optionVerifying HA Redundancy IPC-175Mobile IP Configuration Examples Home Agent Configuration ExampleMonitoring and Maintaining HA Redundancy IPC-176Home Agent Using AAA Server Example IPC-177Foreign Agent Configuration Example Mobile IP HA Redundancy Configuration ExamplesHome Agent Address Configuration Mobile Node Home Physical NetworkIPC-179 Repeat this command for each virtual HA Redundancy for Physical Networks ExampleNetworks IPC-180HA1 Configuration IPC-181HA2 Configuration IPC-182Mobile Node and Home Agent on Same Subnet IPC-183IPC-184 Interface loopback0 Ip address 10.0.0.10Ip mobile Ip mobile home-agent standby SanJoseHANet2 virtual-networkIPC-185 IPC-186 IPC-187 Interface ethernet0 Ip address 1.0.0.2IPC-188 Interface e0IPC-189 IPC-190 IPC-191 IPC-192 IP Routing Protocols Page Configuring On-Demand Routing IPC-195On-Demand Routing Configuration Task List Enabling ODRIPC-196 Reconfiguring CDP or ODR Timers Filtering ODR InformationFilters ODR information on the hub RouterUsing ODR with Dialer Mappings IPC-198Configuring Routing Information Protocol IPC-199RIP Configuration Task List Enabling RIPIPC-200 Allowing Unicast Updates for RIP Adjusting TimersApplying Offsets to Routing Metrics IPC-201Specifying a RIP Version IPC-202Enabling RIP Authentication RIP Route SummarizationIPC-203 IPC-204 Configuring Route Summarization on an Interface Restrictions to RIP Route SummarizationVerifying IP Route Summarization IPC-205Disables automatic summarization Running Igrp and RIP ConcurrentlyDisabling Automatic Route Summarization IPC-206Command Purposes Disabling the Validation of Source IP AddressesEnabling or Disabling Split Horizon IPC-207Configuring Interpacket Delay Connecting RIP to a WANIPC-208 RIP Configuration Examples Example 1 Correct ConfigurationRoute Summarization Examples IPC-209Example 2 Incorrect Configuration Two examples of configuring split horizon are providedSplit Horizon Examples ExampleConfiguration for Router a Configuration for Router BConfiguration for Router C IPC-211Address Family Timers Example IPC-212Configuring 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 pathAdjusting the Igrp Metric Weights Adjusts the Igrp metricRouterconfig-router# traffic-share balanced Distribute traffic proportionately to the ratios of metricsDisabling Holddown Enforcing a Maximum Network DiameterValidating Source IP Addresses IPC-218Igrp Configuration Examples IPC-219Igrp Feasible Successor Relationship Example IPC-220Router Configuration a Router Configuration BRouter Configuration C IPC-221IPC-222 Configuring Ospf Cisco Ospf ImplementationIPC-223 Ospf Configuration Task List IPC-224Configuring Ospf Interface Parameters Enabling OspfIPC-225 Configuring Ospf over Different Physical Networks Configuring Your Ospf Network TypeSpecifies the authentication type for an interface Network segmentConfiguring Point-to-Multipoint, Broadcast Networks Configuring Ospf for Nonbroadcast NetworksIPC-227 Configuring Ospf Area Parameters Nonbroadcast mediaIPC-228 Configuring Ospf Nssa IPC-229Configuring 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-232Changing the Ospf Administrative Distances Configuring Ospf on Simplex Ethernet InterfacesConfiguring Route Calculation Timers IPC-233Configuring Ospf over On-Demand Circuits Enables Ospf operationConfigures Ospf on an on-demand circuit Routerconfig# interface interface-typeSends syslog message when an Ospf neighbor goes up or down Routerconfig-router# log-adjacency-changesLogging Neighbors Going Up or Down Changing the LSA Group PacingLSA 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-237Routerconfig-router# ignore lsa mospf Reducing LSA FloodingIgnoring Mospf LSA Packets Mospf LSA packetsDisplaying Ospf Update Packet Pacing IPC-239Monitoring and Maintaining Ospf IPC-240Ospf Configuration Examples Ospf Point-to-Multipoint ExampleIPC-241 Mollie Configuration Neon ConfigurationPlatty Configuration IPC-242Jelly Configuration Route information in the first configuration is as followsOspf Point-to-Multipoint, Broadcast Example IPC-243Ospf 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-246This configuration, five routers are configured with Ospf IPC-247IPC-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-250IPC-251 Router rip Redistribute ospf 109 route-mapRouter bgp Redistribute ospf 109 route-map Router isisChanging Ospf Administrative Distance Example IPC-252Ospf over On-Demand Routing Example IPC-253IPC-254 Dialer-list 1 protocol ip permitLSA Group Pacing Example Block LSA Flooding ExampleIgnore Mospf LSA Packets Example IPC-255IPC-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 processConfiguring the Percentage of Link Bandwidth Used Adjusting the Eigrp Metric WeightsMaking the Transition from Igrp to Eigrp Logging Eigrp Neighbor Adjacency ChangesMismatched K Values IPC-261Disabling Route Summarization Goodbye MessageIPC-262 Value mismatchConfiguring Summary Aggregate Addresses Configuring Floating Summary RoutesConfigures a summary aggregate address IPC-263IPC-264 10.1.1.0/24 0.0/0 Router-A Router-B Router-CConfiguring Eigrp Route Authentication Configure an interface type and enter interfaceEnables MD5 authentication in Eigrp packets IPC-265Configuring Eigrp Protocol-Independent Parameters IPC-266Configures the hello interval for an Eigrp routing Configures the hold time for an Eigrp routing processDisabling Split Horizon ProcessConfiguring Eigrp Stub Routing IPC-268Dual-Homed Remote Topology IPC-269IPC-270 IPC-271 Eigrp Stub Routing Configuration Task List Configuring Eigrp Stub RoutingMonitoring and Maintaining Eigrp Verifying Eigrp Stub RoutingEigrp Configuration Examples Route Summarization ExampleIPC-273 IPC-274 Route Authentication Example IPC-275Infinite Exit Key Key-stringStub Routing Example IPC-276Eigrp stub connected static Configuring Integrated IS-IS IS-IS Configuration Task ListEnabling IS-IS and Assigning Areas IPC-277Routerconfig# router isis area tag IPC-278IS-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-280Setting the Retransmission Interval Setting the LSP Transmissions IntervalSetting the Retransmission Throttle Interval IPC-281Setting the Hello Multiplier Assigning a Password for an InterfaceSpecifying Designated Router Election Specifying the Interface Circuit TypeConfiguring Mesh Groups Limiting LSP FloodingBlocking Flooding on Specific Interfaces IPC-283Miscellaneous IS-IS Parameters Configuration Task List Generating a Default RouteForces a default route into the IS-IS routing domain Specifying the System TypeConfiguring IS-IS Authentication Passwords Setting the Overload BitSummarizing Address Ranges IPC-285Tuning LSP Interval and Lifetime Routerconfig-router# set-overload-bitChanging the Routing Level for an Area Sets the overload bitRouter Config-router# max-lsp-lifetime Partial Route Computation PRCSets the LSP refresh interval Router’s database without being refreshedModifying the Output of show Commands IPC-288IS-IS Configuration Examples Enabling IS-IS Configuration ExampleMonitoring IS-IS IPC-289Multiarea IS-IS Configuration for Clns Network Example IPC-290IS-IS Throttle Timers Example IPC-291Router isis BB IPC-292 Configuring BGP Cisco BGP ImplementationIPC-293 How BGP Selects Paths IPC-294Basic BGP Configuration Task List BGP Multipath SupportIPC-295 Advanced BGP Configuration Task List IPC-296Configuring Basic BGP Features Configuring BGP NeighborsEnabling BGP Routing IPC-297Type of Reset Advantages Disadvantages Capability Policy updates without modificationManaging Routing Policy Changes Is memory-intensiveResetting 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-300Verifying BGP Soft Reset IPC-301Configuring BGP Interactions with IGPs Disables synchronization between BGP and an IGPTimer Starts Wakeups IPC-302Configuring 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-nameConfiguring 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-308Disabling Next Hop Processing Using a Specific Address Disabling Next Hop Processing Using a Route MapConfiguring BGP Next Hop Propagation IPC-309Configuring 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 AddressesConfiguring 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-315Configuring a Routing Domain Confederation BGP Conditional Advertisement Troubleshooting TipsConfigures a BGP confederation IPC-316Configuring a Route Reflector Specifies the autonomous systems that belong toConfederation IPC-317IPC-318 Simple BGP Model with a Route ReflectorConfigures the local router as a BGP route reflector Configures the cluster IDRouterconfig-router# bgp cluster-id cluster-id Specified neighbor as a clientConfiguring BGP Peer Groups Routerconfig-router# neighbor peer-group-nameCreating the Peer Group Creates a BGP peer groupAssigning Options to the Peer Group IPC-321Invokes 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 toDisabling 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 TableChanging the Default Local Preference Value Redistributing NetworkIPC-326 Selecting Path Based on MEDs from Other Autonomous Systems IPC-327Configuring 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-330Monitoring and Maintaining BGP Clears route dampening information and unsuppressesSuppressed routes IPC-331BGP 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 igrp2bgpSet 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-334IPC-335 Router bgp Neighbor 1.1.1.2 remote-asRouter bgp Neighbor 1.1.1.1 remote-as BGP Neighbor Configuration Examples IPC-336BGP Prefix List Filtering Examples IPC-337Ip prefix-list abc deny 0.0.0.0/0 Ip prefix-list abc permit 35.0.0.0/8IPC-338 BGP Soft Reset Examples Dynamic Inbound Soft Reset ExampleInbound Soft Reset Using Stored Information Example Added or Deleted Prefix List Entries ExamplesBGP 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-344BGP Peer Group Examples IBGP Peer Group ExampleEBGP Peer Group Example IPC-345TCP MD5 Authentication for BGP Examples Router bgp Neighbor 10.108.1.1 password bla4u00=2nkqIPC-346 Configuring Multiprotocol BGP Extensions for IP Multicast IPC-347IPC-348 Incongruent Unicast and Multicast RoutesMultiprotocol BGP Configuration Task List IPC-349Configuring a Multiprotocol BGP Peer Understanding Nlri Keywords and Address FamiliesIPC-350 Configuring a Multiprotocol BGP Peer Group IPC-351Advertising Routes into Multiprotocol BGP IPC-352Configuring 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 BGPConfiguring a Multiprotocol BGP Route Reflector Configuring Aggregate Multiprotocol BGP AddressesIPC-356 Verifying Multiprotocol BGP Configuration and Operation Configures an aggregate address with variousOptions IPC-357Multiprotocol BGP Configuration Examples Database informationIPC-358 Multiprotocol BGP Peer Examples Multiprotocol BGP Peer Group ExamplesIPC-359 Neighbor 10.1.1.1 activateMultiprotocol BGP Network Advertisement Examples Multiprotocol BGP Route Map ExamplesMultiprotocol BGP Route Redistribute Examples IPC-360Multiprotocol BGP Route Reflector Examples Aggregate Multiprotocol BGP Address ExamplesIPC-361 Aggregate-address 172.16.0.0 255.0.0.0 as-setIPC-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-364Specifying Default Routes Specifying a Default NetworkIPC-365 Configuring Multi-Interface Load Splitting Changing the Maximum Number of PathsUnderstanding Gateway of Last Resort IPC-366Redistributing Routing Information IPC-367IPC-368 Understanding Supported Metric Translations IPC-369Preventing Routing Updates Through an Interface Suppresses the sending of routing updates throughFiltering Routing Information Specified interfaceConfiguring Default Passive Interfaces IPC-371Controlling the Advertising of Routes in Routing Updates Controlling the Processing of Routing UpdatesFiltering Sources of Routing Information IPC-372Defines a route map to control where packets are output Enabling Policy Routing PBRIdentifies the route map to use for policy routing IPC-373IPC-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-378Displays authentication key information Displays all route maps configured or only the oneVariable-Length Subnet Mask Example SpecifiedAdministrative Distance Examples Overriding Static Routes with Dynamic Protocols ExampleIPC-380 Ip route 10.0.0.0 255.0.0.0 172.18.3.4Access-list 3 permit Static Routing Redistribution ExampleIgrp Redistribution Example IPC-381RIP and Igrp Redistribution Example Eigrp Redistribution ExamplesIPC-382 Configuration for router R1 router bgp Network RIP and Eigrp Redistribution ExamplesSimple Redistribution Example Complex Redistribution ExampleIPC-384 Redistribute bgpInternal Router, ABR, and ASBRs Configuration Example IPC-385IPC-386 Example Ospf Autonomous System Network MapIPC-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 10.0.0.0Default 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 SerialFollowing example configures a key chain named trees Set default interface null0Ip rip authentication key-chain trees media-type 10BaseT Key Management ExamplesIPC-395 Ip rip receive version 1 no keepaliveIPC-396 IP Multicast Page Configuring IP Multicast Routing IPC-399Cisco IP Multicast Routing Implementation IPC-400Draft-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-403Enabling Sparse Mode Enabling Sparse-Dense ModeEnables PIM dense mode on the interface Enables PIM sparse mode on the interfaceConfiguring PIM Dense Mode State Refresh IPC-405Configuring Auto-RP Configuring a Rendezvous PointConfigures the address of a PIM RP IPC-406Setting 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 ServesFiltering Incoming RP Announcement Messages Verifying the Group-to-RP MappingStarting to Use IP Multicast Preventing Join Messages to False RPsIgmp Features Configuration Task List Configuring a Router to Be a Member of a GroupControlling Access to IP Multicast Groups IPC-409Changing the Igmp Version Routers That Run Igmp VersionSelects the Igmp version that the router uses Igmp host-query messagesConfiguring Igmp Version Sets the Igmp query timeoutIPC-411 Restrictions IPC-412Changing the Igmp Query Timeout Configuring the Router as a Statically Connected MemberRouterconfig-if# ip igmp Changing the Maximum Query Response TimeConfiguring 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 queryConfiguring the TTL Threshold Disabling Fast Switching of IP MulticastSAP Listener Support Configuration Task List Enabling SAP Listener SupportRouterconfig-if# ip sap listen Limiting How Long a SAP Cache Entry ExistsAnnouncements IPC-416Configuring 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 VersionConfiguring 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-421Advanced PIM Features Configuration Task List Dense ModeSparse Mode Monitoring the RP Mapping InformationIPC-423 Shared Tree and Source Tree Shortest-Path TreeDelaying the Use of PIM Shortest-Path Tree Understanding Reverse Path ForwardingShortest-path tree IPC-424Assigning an RP to Multicast Groups Increasing Control over RPsModifying the PIM Router Query Message Interval IPC-425Understanding 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-427Enabling PIM Nonbroadcast Multiaccess Mode Enables PIM Nbma modeRouterconfig-if# ip pim nbma-mode IPC-428Configuring an IP Multicast Static Route IPC-429Configuring RTP Header Compression Configures an IP multicast static routeControlling the Transmission Rate to a Multicast Group Controls transmission rate to a multicast groupIPC-431 RTP Header CompressionEnabling RTP Header Compression on a Serial Interface Changing the Number of Header Compression ConnectionsIPC-432 Enabling Express RTP Header Compression IPC-433IPC-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 IdledConfiguring an IP Multicast Boundary Configuring an Intermediate IP Multicast HelperIPC-438 Storing IP Multicast Headers IPC-439Configuring Stub IP Multicast Routing Use the show ip mpacket Exec command to display the bufferEnables Cgmp Enabling CgmpSpecified 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-442Configuring the Access Router Configuring the Router at the Opposite End of the TunnelIPC-443 Configuring Both Routers to RPF IPC-444Verifying the Load Splitting IPC-445Tunnel0 Serial1IPC-446 Using IP Multicast Heartbeat IPC-447IP Multicast Configuration Examples PIM Dense Mode ExamplePIM Sparse Mode Example IPC-448PIM Dense Mode State Refresh Example BSR Configuration ExamplePIM Version 2 Examples This section provides examples in the following sectionsBorder Router Configuration Example RFC 2362 Interoperable Candidate RP ExampleIPC-450 Ip pim sparse-dense-mode Router ospfRTP Header Compression Examples IPC-451IPC-452 No keepalive ClockrateNo ip route-cache Interface Ethernet2/1 Interface Serial4/0Password lab login No scheduler max-task-time end IPC-453Version Ip route-cacheIP Multicast over ATM Point-to-Multipoint VC Example IPC-454Administratively Scoped Boundary Example IP Multicast Helper ExampleIPC-455 Atm pvc 2 0 16 ilmiRouter A-First Hop Router Configuration Router C-Last Hop Router ConfigurationStub IP Multicast Example IPC-456IPC-457 IP Multicast Load Splitting Across Equal-Cost PathsIP 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 1Configuring Source Specific Multicast SSM Components OverviewIPC-459 How SSM Differs from Internet Standard Multicast SSM IP Address RangeSSM Operations IPC-460IGMPv3 Host Signalling Igmp v3lite Host SignallingIPC-461 URD Host Signalling IPC-462IPC-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 RequiredIdeal for Internet Broadcast Applications Legacy Applications Within the SSM Range RestrictionsIgmp v3lite and URD Require a Cisco IOS Last Hop Router Address Management RestrictionsState Maintenance Limitations Igmp Snooping and Cgmp LimitationsURD Intercept URL Limitations Hsil LimitationsSSM Configuration Task List Configuring SSMMonitoring SSM IPC-467SSM Configuration Examples SSM with IGMPv3 ExampleSSM with Igmp v3lite and URD Example SSM Filtering ExampleIPC-469 IPC-470 Configuring Bidirectional PIM Bidir-PIM OverviewIPC-471 IPC-472 Unidirectional Shared Tree and Source TreeDF Election IPC-473Bidir-PIM Configuration Task List Bidirectional Group Tree BuildingPacket Forwarding IPC-474Configuring 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 PeersMsdp Configuration Task List IPC-479Configuring 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 SourcesUsing an Msdp Filter Controlling Source Information That Your Router ForwardsFiltering SA Request Messages IPC-482Using TTL to Limit the Multicast Data Sent in SA Messages Controlling Source Information That Your Router ReceivesIPC-483 Configuring a Default Msdp Peer IPC-484Configuring 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 usedMonitoring and Maintaining Msdp IPC-487Msdp Configuration Examples Default Msdp PeerLogical RP IPC-488RouterA Configuration IPC-489RouterB Configuration IPC-490No shutdown Router ospf RouterE Configuration IPC-491No shutdown Interface Loopback10 Hostname RouterE Ip routingIPC-492 Ip multicast boundary 20 no shutdown Router ospfConfiguring PGM Host and Router Assist PGM OverviewIPC-493 Network Topology Using PGM Host and Router Assist IPC-494PGM 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-496IPC-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-499PGM 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 vif1PGM Router Assist with a Virtual Interface Example PGM Router Assist with a Physical Interface ExampleIPC-502 Ip pgm routerIPC-503 IPC-504 Configuring Unidirectional Link Routing Udlr OverviewIPC-505 Udlr Tunnel IPC-506Igmp Proxy IPC-507Udlr Tunnel Configuration Task List Configuring Udlr TunnelPrerequisite IPC-508IPC-509 Igmp Udlr Configuration Task List Configuring the Igmp UDLConfigures Igmp on the interface to be unidirectional UDL interfaceIgmp Proxy Configuration Task List Changing the Distance for the Default RPF InterfaceMonitoring Igmp Udlr Displays Udlr information for directly connected multicastConfiguring Igmp Proxy Verifying Igmp ProxyIPC-512 Udlr Configuration Examples Udlr Tunnel ExampleThis section provides the following Udlr examples IPC-513Configure tunnel as send-only Udlr tunnel Igmp Udlr ExampleIPC-514 Ip multicast-routing Serial1 has receive-only capabilityUplink Router uplink-rtr Configuration Downlink Router downlink-rtr ConfigurationIPC-515 Igmp Proxy Example IPC-516IPC-517 Ip igmp unidirectional linkUpstream Configuration Integrated Udlr Tunnel, Igmp UDLR, and Igmp Proxy ExampleIPC-518 Ip multicast-routing Interface Tunnel0Downstream Configuration No cdp enableIPC-519 Ip pim sparse-mode Ip igmp unidirectional-linkIPC-520 Using IP Multicast Tools Multicast Routing Monitor OverviewIPC-521 MRM Configuration Task List Configuring a Test Sender and Test ReceiverRestrictions IPC-522Monitoring Multiple Groups IPC-523Configuring 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 ConfigurationProtocol IP Multicast Routing OverviewIPC-527 Rgmp Overview IPC-528IPC-529 IgmpIPC-530 PIM-SM RgmpRgmp Configuration Task List IPC-531Verifying Rgmp Configuration Rgmp and enters interface configuration modeEnables Rgmp on a specified interface Enabling RgmpMonitoring and Maintaining Rgmp IPC-533Rgmp Configuration Example IPC-534Switch a Configuration Switch B ConfigurationSwitch enable set igmp enable Switch enable set rgmp enable IPC-535IPC-536 Configuring Dvmrp Interoperability Basic Dvmrp Interoperability Configuration Task ListIPC-537 Configuring Dvmrp Interoperability Responding to mrinfo RequestsDvmrp reports Injected into DvmrpConfiguring a Dvmrp Tunnel IPC-539Advertising Network 0.0.0.0 to Dvmrp Neighbors Enabling Dvmrp Unicast RoutingAdvertises network 0.0.0.0 to Dvmrp neighbors IPC-540Configuring a Dvmrp Summary Address Enables Dvmrp unicast routingLimiting the Number of Dvmrp Routes Advertised Changing the Dvmrp Route ThresholdDisables Dvmrp automatic summarization Disabling Dvmrp Automatic summarizationAdding a Metric Offset to the Dvmrp Route Specifies a Dvmrp summary addressRejecting a Dvmrp Nonpruning Neighbor IPC-543Configuring a Delay Between Dvrmp Reports Prevents peering with nonpruning Dvmrp neighborsIPC-544 Dvmrp Configuration Examples Monitoring and Maintaining DvmrpDvmrp Interoperability Example Dvmrp Tunnel 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