IPC-80 | Cisco Systems 78-11741-02 instruction

Configuring DHCP

Configuration Examples

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Cisco IOS IP Configuration Guide

IPC-80

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Cisco Systems 78-11741-02 manual IPC-80

Contents

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 Audience About Cisco IOS Software DocumentationDocumentation Objectives Documentation Organization Shows the Cisco IOS software documentation modules Xxx Xxxi Module DC/DR Module TC/TR Master Indexes Supporting Documents and ResourcesXxxii Convention Description New and Changed InformationDocument Conventions Xxxiii Xxxiv World Wide Web Obtaining DocumentationDocumentation Feedback Documentation CD-ROM Cisco.com Contacting TAC by Using the Cisco TAC WebsiteObtaining Technical Assistance 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 Building configuration Saving Configuration ChangesFiltering Output from the show and more Commands Xliv Identifying Supported Platforms Using Feature NavigatorUsing Software Release Notes 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 Routerconfig-if# ip unnumbered type number Configuring Address Resolution MethodsEstablishing Address Resolution Assigning an explicit IP address to the interface Address in the ARP cache Defining a Static ARP CacheGlobally associates an IP address with a media hardware Were the owner of the specified IP address Enabling Proxy ARP Setting ARP EncapsulationsEnables proxy ARP on the interface IPC-14 Configuring Local-Area Mobility Mapping Host Names to IP AddressesIPC-15 Assigning Host Names to IP Addresses Specifying the Domain NameIPC-16 Enabling the DNS Using the DNS to Discover ISO Clns AddressesSpecifying a Name Server IPC-17 Cisco Implementation of Nhrp Configuring HP Probe Proxy Name RequestsConfiguring the Next Hop Resolution Protocol 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 Is attempted Routerconfig-if# ip nhrp use usage-countTriggering Nhrp Based on Traffic Thresholds IPC-23 IPC-24 Controlling the Nhrp Packet Rate IPC-25 Suppressing Forward and Reverse Record Options Specifying the Nhrp Responder AddressIPC-26 Enabling IP Routing Configuring a GRE Tunnel for Multipoint OperationConfiguring Nhrp Server-Only Mode IPC-27 Proxy ARP Routing Assistance When IP Routing Is DisabledDefault Gateway IPC-28 Icmp Router Discovery Protocol IPC-29 Enabling Integrated Routing and Bridging Configuring a Routing ProcessEnabling IP Bridging IPC-30 Configuring Broadcast Packet Handling IPC-31 Forwarding UDP Broadcast Packets and Protocols Forwarding UDP broadcast packets, such as BootpRouterconfig-if# ip helper-address address On an interface Establishes a different broadcast address other than Establishing an IP Broadcast AddressFlooding IP Broadcasts Bit Address nethost Speeding Up Flooding of UDP Datagrams IPC-34 Benefits Configuring Network Address TranslationNAT Applications 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 Translations that do not use overloading Changing Translation TimeoutsChanges the timeout value for dynamic address IPC-45 Monitoring and Maintaining NAT Deploying NAT Between an IP Phone and Cisco CallManagerIPC-46 Specifying the Format of Network Masks Monitoring and Maintaining IP AddressingClearing Caches, Tables, and Databases IPC-47 Displaying System and Network Statistics IPC-48 IP Addressing Examples Monitoring and Maintaining NhrpIPC-49 Router C Configuration Serial Interfaces Configuration ExampleRouter B Configuration Creating a Network from Separated Subnets Example HP Hosts on a Network Segment Example IP Domains ExampleDynamic Lookup 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 Ip nhrp network-id Ip nhrp trigger-svc 100 Applying Nhrp Rates to Specific Destinations ExampleIPC-57 Interface Fddi4/0/0 Nhrp on a Multipoint Tunnel Example IPC-58 Flooded Broadcast Example Router D ConfigurationBroadcasting Examples IPC-59 IPC-60 Helper Addresses ExampleFlooding of IP Broadcasts Example Interface serial Following sections show NAT configuration examples NAT Configuration ExamplesFollowing example shows the configuration 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 Features Dhcp Configuration Task ListEnabling the Cisco IOS Dhcp Server and Relay Agent Features Routerconfig# service dhcp Database transfers Configuring a Dhcp Address PoolExcluding IP Addresses Dhcp clients Configuring the Dhcp Address Pool Subnet and Mask Configuring the Domain Name for the ClientIPC-70 Configuring the Default Router for the Client Configuring Manual BindingsConfiguring the NetBIOS Node Type for the Client Configuring the Address Lease Time Command IPC-72 Configuring the Timeout Value for Ping Packets Configuring a Dhcp Server Boot FileConfiguring the Number of Ping Packets Enabling the Cisco IOS Dhcp Client on Ethernet Interfaces Import Dhcp option parameters into the Dhcp server database Eight IP addresses in one command lineExits Dhcp pool configuration mode IPC-74 Monitoring and Maintaining the Dhcp Server Configuring a Relay Agent Information Reforwarding PolicyEnabling the Dhcp Smart-Relay Feature IPC-75 Configuration Examples IPC-76 Default-router 172.16.1.100 172.16.1.101 lease Dhcp Database Agent Configuration ExampleDhcp Address Pool Configuration Example Default-router 172.16.2.100 172.16.2.101 lease Cisco IOS Dhcp Client Example Manual Bindings Configuration ExampleOn the Dhcp Server, the configuration is as follows IPC-78 Remote Router Dhcp Server Options Import and Autoconfiguration ExampleCentral Router IPC-79 IPC-80 Managing IP Connections Configuring IP ServicesIP Services Task List IPC-81 Enabling Icmp Redirect Messages Routerconfig-if# ip unreachablesEnabling Icmp Protocol Unreachable Messages Messages Understanding Path MTU Discovery Enables the sending of Icmp mask reply messagesEnabling Icmp Mask Reply Messages IPC-83 Enabling IP Source Routing Setting the MTU Packet SizeRouterconfig-if# ip mtu bytes Sets the IP MTU packet size for an interface Assigns a transmit interface to a receive-only interface Configuring Simplex Ethernet InterfacesConfiguring a DRP Server Agent IPC-85 Limiting the Source of DRP Queries Configuring Authentication of DRP Queries and ResponsesEnabling the DRP Server Agent 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 Enabling Hsrp Enables the HsrpRouterconfig-if# standby group-number ip 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 Redirects to Active Hsrp Routers Enabling Hsrp Support for Icmp Redirect MessagesVerifying Hsrp Support for Mpls VPNs IPC-105 IPC-106 Passive Hsrp Router Advertisements Redirects to Passive Hsrp RoutersRedirects to Non-HSRP Routers Redirects Not Sent Configuring IP Accounting Configuring Hsrp Support for Icmp Redirect MessagesIPC-108 Configuring IP MAC Accounting IPC-109 Configures IP accounting based on the precedence Configuring TCP Performance ParametersConfiguring IP Precedence Accounting IPC-110 Compressing TCP Packet Headers Enables TCP header compressionRouterconfig-if# ip tcp Expressing TCP Header Compression Changing the Number of TCP Header Compression Connections Setting the TCP Connection Attempt TimeEnabling TCP Path MTU Discovery Can exist on an interface Enables Path MTU Discovery Enabling TCP Selective AcknowledgmentIPC-113 Enabling TCP Time Stamp Setting the TCP Maximum Read SizeSetting the TCP Window Size IPC-114 Sets the TCP outgoing queue size Configuring IP over WANsSetting 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 Router 2 Configuration Icmp Services ExampleRouter 1 Configuration Simplex Ethernet Interfaces Example DRP Server Agent Example Numbered Access List ExamplesIp access-group 2 out IPC-122 Turbo Access Control List Example Implicit Masks in Access Lists ExamplesIPC-123 IPC-124 Named Access List ExampleExtended Access List Examples Interface Ethernet0/5 Commented IP Access List Entry Examples IP Extended Access List with Fragment Control ExampleTime Range Applied to an IP Access List Example Interface ethernet Ip access-group strict IPC-126 IP Accounting ExampleHsrp Load Sharing Example Deny tcp 171.69.0.0 0.0.255.255 any eq telnet Hsrp MAC Refresh Interval Examples No Switch or Learning Bridge Present ExampleSwitch or Learning Bridge Present Example IPC-127 Hsrp MIB Trap Example Primary Router ConfigurationBackup Router Configuration Hsrp Support for Mpls VPNs Example Hsrp Support for Icmp Redirect Messages Example Router PE1 ConfigurationRouter PE2 Configuration IPC-129 Forwarding Agent Configuration for FA2 Example Mnlb Forwarding Agent ExamplesIPC-130 Services Manager Configuration for SM Example IPC-131 IPC-132 Failover ip address 0.0.0.0 failover Password ciscoNo snmp-server location Casa service-manager port Ip address 172.26.56.19 Configuring Server Load Balancing IPC-133 IOS SLB Functions and Capabilities IPC-134 Algorithms for Server Load Balancing Weighted Round RobinWeighted Least Connections IPC-135 Client-Assigned Load Balancing Content Flow Monitor SupportPort-Bound Servers Sticky Connections Automatic Server Failure Detection Delayed Removal of TCP Connection ContextTCP Session Reassignment Automatic Unfail Transparent Web Cache Balancing Dynamic Feedback Protocol for IOS SLBAlternate IP Addresses 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 Specifying a Real Server Configuring Real Server AttributesSpecifying a Bind ID IPC-142 Specifying a Virtual Server Enabling the Real Server for ServiceConfiguring Virtual Server Attributes Associating a Virtual Server with a Server Farm Preventing Advertisement of Virtual Server Address Adjusting Virtual Server ValuesEnabling the Virtual Server for Service IPC-144 Implementing IOS SLB Stateless Backup Configuring IOS SLB Dynamic Feedback ProtocolConfiguring NAT How IOS SLB Stateless Backup Works Configuring IOS SLB Stateless Backup IPC-146 Verifying the IOS SLB Stateless Backup Configuration Customizing Group AttributesIPC-147 IPC-148 Verifying IOS SLB InstallationVerifying IOS SLB 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 Mobile IP Overview Configuring Mobile IPWhy is Mobile IP Needed? 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 Hsrp Groups Home Agent RedundancyStoring SAs on AAA 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 Verifying Setup Configuring Radius in the Mobile IP EnvironmentConfiguring TACACS+ in the Mobile IP Environment IPC-169 Shutting Down Mobile IP Mobile IP HA Redundancy Configuration Task ListMonitoring and Maintaining Mobile IP IPC-170 Enabling Mobile IP IPC-171 Enabling HA Redundancy for a Physical Network IPC-172 IPC-173 Agent are on the same subnet, use the address Defines the virtual networks. Repeat this step forEach virtual network. If the mobile node and home Address option Verifying HA Redundancy IPC-175 Monitoring and Maintaining HA Redundancy Mobile IP Configuration ExamplesHome Agent Configuration Example IPC-176 Home Agent Using AAA Server Example IPC-177 Home Agent Address Configuration Foreign Agent Configuration ExampleMobile IP HA Redundancy Configuration Examples Mobile Node Home Physical Network IPC-179 Networks Repeat this command for each virtualHA Redundancy for Physical Networks Example IPC-180 HA1 Configuration IPC-181 HA2 Configuration IPC-182 Mobile Node and Home Agent on Same Subnet IPC-183 Ip mobile IPC-184Interface loopback0 Ip address 10.0.0.10 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 Filters ODR information on the hub Reconfiguring CDP or ODR TimersFiltering ODR Information Router Using ODR with Dialer Mappings IPC-198 Configuring Routing Information Protocol IPC-199 RIP Configuration Task List Enabling RIPIPC-200 Applying Offsets to Routing Metrics Allowing Unicast Updates for RIPAdjusting Timers IPC-201 Specifying a RIP Version IPC-202 Enabling RIP Authentication RIP Route SummarizationIPC-203 IPC-204 Verifying IP Route Summarization Configuring Route Summarization on an InterfaceRestrictions to RIP Route Summarization IPC-205 Disabling Automatic Route Summarization Disables automatic summarizationRunning Igrp and RIP Concurrently IPC-206 Enabling or Disabling Split Horizon Command PurposesDisabling the Validation of Source IP Addresses IPC-207 Configuring Interpacket Delay Connecting RIP to a WANIPC-208 Route Summarization Examples RIP Configuration ExamplesExample 1 Correct Configuration IPC-209 Split Horizon Examples Example 2 Incorrect ConfigurationTwo examples of configuring split horizon are provided Example Configuration for Router C Configuration for Router aConfiguration for Router B 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 Controlling Traffic Distribution Routerconfig-router# variance multiplierDefining Unequal-Cost Load Balancing Defines the variance associated with a particular path Routerconfig-router# traffic-share balanced Adjusting the Igrp Metric WeightsAdjusts the Igrp metric Distribute traffic proportionately to the ratios of metrics Validating Source IP Addresses Disabling HolddownEnforcing a Maximum Network Diameter IPC-218 Igrp Configuration Examples IPC-219 Igrp Feasible Successor Relationship Example IPC-220 Router Configuration C Router Configuration aRouter Configuration B IPC-221 IPC-222 Configuring Ospf Cisco Ospf ImplementationIPC-223 Ospf Configuration Task List IPC-224 Configuring Ospf Interface Parameters Enabling OspfIPC-225 Specifies the authentication type for an interface Configuring Ospf over Different Physical NetworksConfiguring Your Ospf Network Type 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 Forcing the Router ID Choice with a Loopback Interface Configuring Lookup of DNS NamesControlling Default Metrics IPC-232 Configuring Route Calculation Timers Changing the Ospf Administrative DistancesConfiguring Ospf on Simplex Ethernet Interfaces IPC-233 Configures Ospf on an on-demand circuit Configuring Ospf over On-Demand CircuitsEnables Ospf operation Routerconfig# interface interface-type Logging Neighbors Going Up or Down Sends syslog message when an Ospf neighbor goes up or downRouterconfig-router# log-adjacency-changes Changing the LSA Group Pacing LSA Group Pacing With Multiple Timers Original LSA BehaviorIPC-236 Changes the group pacing of LSAs Routerconfig-router# timers lsa-group-pacingBlocking Ospf LSA Flooding IPC-237 Ignoring Mospf LSA Packets Routerconfig-router# ignore lsa mospfReducing LSA Flooding 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 Platty Configuration Mollie ConfigurationNeon Configuration IPC-242 Ospf Point-to-Multipoint, Broadcast Example Jelly ConfigurationRoute information in the first configuration is as follows 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 Route Map Examples Following configuration Ospf is on networkFollowing configuration Igrp autonomous system 200 is on IPC-250 Router bgp Redistribute ospf 109 route-map IPC-251Router rip 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 Ignore Mospf LSA Packets Example LSA Group Pacing ExampleBlock LSA Flooding Example IPC-255 IPC-256 Configuring Eigrp Cisco Eigrp ImplementationIPC-257 IPC-258 Enabling Eigrp Eigrp Configuration Task ListEnables an Eigrp routing process in global Associates networks with an Eigrp routing process Making the Transition from Igrp to Eigrp Configuring the Percentage of Link Bandwidth UsedAdjusting the Eigrp Metric Weights Logging Eigrp Neighbor Adjacency Changes Mismatched K Values IPC-261 IPC-262 Disabling Route SummarizationGoodbye Message Value mismatch Configures a summary aggregate address Configuring Summary Aggregate AddressesConfiguring Floating Summary Routes IPC-263 IPC-264 10.1.1.0/24 0.0/0 Router-A Router-B Router-C Enables MD5 authentication in Eigrp packets Configuring Eigrp Route AuthenticationConfigure an interface type and enter interface IPC-265 Configuring Eigrp Protocol-Independent Parameters IPC-266 Disabling Split Horizon Configures the hello interval for an Eigrp routingConfigures the hold time for an Eigrp routing process Process Configuring Eigrp Stub Routing IPC-268 Dual-Homed Remote Topology IPC-269 IPC-270 IPC-271 Monitoring and Maintaining Eigrp Eigrp Stub Routing Configuration Task ListConfiguring Eigrp Stub Routing Verifying Eigrp Stub Routing Eigrp Configuration Examples Route Summarization ExampleIPC-273 IPC-274 Infinite Route Authentication ExampleIPC-275 Exit Key Key-string Stub Routing Example IPC-276Eigrp stub connected static Enabling IS-IS and Assigning Areas Configuring Integrated IS-ISIS-IS Configuration Task List 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 Setting the Advertised Csnp Interval Configuring IS-IS Link-State MetricsSetting the Advertised Hello Interval IPC-280 Setting the Retransmission Throttle Interval Setting the Retransmission IntervalSetting the LSP Transmissions Interval IPC-281 Specifying Designated Router Election Setting the Hello MultiplierAssigning a Password for an Interface Specifying the Interface Circuit Type Blocking Flooding on Specific Interfaces Configuring Mesh GroupsLimiting LSP Flooding IPC-283 Forces a default route into the IS-IS routing domain Miscellaneous IS-IS Parameters Configuration Task ListGenerating a Default Route Specifying the System Type Summarizing Address Ranges Configuring IS-IS Authentication PasswordsSetting the Overload Bit IPC-285 Changing the Routing Level for an Area Tuning LSP Interval and LifetimeRouterconfig-router# set-overload-bit Sets the overload bit Sets the LSP refresh interval Router Config-router# max-lsp-lifetimePartial Route Computation PRC Router’s database without being refreshed Modifying the Output of show Commands IPC-288 Monitoring IS-IS IS-IS Configuration ExamplesEnabling IS-IS Configuration Example 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 Enabling BGP Routing Configuring Basic BGP FeaturesConfiguring BGP Neighbors IPC-297 Managing Routing Policy Changes Type of Reset Advantages DisadvantagesCapability Policy updates without modification 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 Timer Starts Wakeups Configuring BGP Interactions with IGPsDisables synchronization between BGP and an IGP IPC-302 Configuring BGP Weights Disabling Autonomous System Path ComparisonIPC-303 Configuring BGP Route Filtering by Neighbor Configuring BGP Filtering Using Prefix ListsIPC-304 Argument How the System Filters Traffic by Prefix ListCreating a Prefix List Removes a prefix list with the name specified for list-name IPC-306 Configuring a Prefix List EntryTo the entry Len ge-value = le-value = Deleting a Prefix List or Prefix List Entries Displaying Prefix EntriesIPC-307 Clearing the Hit Count Table of Prefix List Entries Configuring BGP Path Filtering by NeighborDisabling Next Hop Processing on BGP Updates IPC-308 Configuring BGP Next Hop Propagation Disabling Next Hop Processing Using a Specific AddressDisabling Next Hop Processing Using a Route Map IPC-309 Configuring the BGP Version Configuring the MED MetricIPC-310 Resetting eBGP Connections Immediately upon Link Failure Configuring Advanced BGP FeaturesUsing Route Maps to Modify Updates 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 Verifying BGP Conditional Advertisement BGP Conditional Advertisement Configuration Task ListConditional Advertisement of a Set of Routes IPC-315 Configures a BGP confederation Configuring a Routing Domain ConfederationBGP Conditional Advertisement Troubleshooting Tips IPC-316 Confederation Configuring a Route ReflectorSpecifies the autonomous systems that belong to IPC-317 IPC-318 Simple BGP Model with a Route Reflector Routerconfig-router# bgp cluster-id cluster-id Configures the local router as a BGP route reflectorConfigures the cluster ID Specified neighbor as a client Creating the Peer Group Configuring BGP Peer GroupsRouterconfig-router# neighbor peer-group-name 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 IPC-323 Old BehaviorNew Behavior 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 Indicating Backdoor Routes Setting Administrative DistanceAdjusting BGP Timers 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 Monitoring and Maintaining BGP Route Dampening Changes the default values of route dampening factorsRouterconfig# bgp dampening half-life reuse IPC-330 Suppressed routes Monitoring and Maintaining BGPClears route dampening information and unsuppresses IPC-331 BGP Configuration Examples Logging Changes in Neighbor StatusIPC-332 Router bgp Neighbor 1.1.1.1 route-map freddy out BGP Route Map ExamplesIPC-333 Router bgp Redistribute igrp 109 route-map igrp2bgp Access-list 2 permit 0.0.0.0 Set local-preference 25 set metric Set weightSet automatic-tag Ip as-path access-list 1 permit 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 Ip prefix-list abc deny 0.0.0.0/0 BGP Prefix List Filtering ExamplesIPC-337 Ip prefix-list abc permit 35.0.0.0/8 IPC-338 Inbound Soft Reset Using Stored Information Example BGP Soft Reset ExamplesDynamic Inbound Soft Reset 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 EBGP Peer Group Example BGP Peer Group ExamplesIBGP 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 Redistributed Redistributing Dvmrp Routes into Multiprotocol BGPRedistributes multiprotocol BGP routes into Dvmrp with a Redistributes Dvmrp routes into multiprotocol BGP Configuring a Multiprotocol BGP Route Reflector Configuring Aggregate Multiprotocol BGP AddressesIPC-356 Options Verifying Multiprotocol BGP Configuration and OperationConfigures an aggregate address with various IPC-357 Multiprotocol BGP Configuration Examples Database informationIPC-358 IPC-359 Multiprotocol BGP Peer ExamplesMultiprotocol BGP Peer Group Examples Neighbor 10.1.1.1 activate Multiprotocol BGP Route Redistribute Examples Multiprotocol BGP Network Advertisement ExamplesMultiprotocol BGP Route Map Examples IPC-360 IPC-361 Multiprotocol BGP Route Reflector ExamplesAggregate Multiprotocol BGP Address Examples 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 Route Source Default Distance Using Variable-Length Subnet MasksConfiguring Static Routes IPC-364 Specifying Default Routes Specifying a Default NetworkIPC-365 Understanding Gateway of Last Resort Configuring Multi-Interface Load SplittingChanging the Maximum Number of Paths IPC-366 Redistributing Routing Information IPC-367 IPC-368 Understanding Supported Metric Translations IPC-369 Filtering Routing Information Preventing Routing Updates Through an InterfaceSuppresses the sending of routing updates through Specified interface Configuring Default Passive Interfaces IPC-371 Filtering Sources of Routing Information Controlling the Advertising of Routes in Routing UpdatesControlling the Processing of Routing Updates IPC-372 Identifies the route map to use for policy routing Defines a route map to control where packets are outputEnabling Policy Routing PBR 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 Variable-Length Subnet Mask Example Displays authentication key informationDisplays all route maps configured or only the one Specified IPC-380 Administrative Distance ExamplesOverriding Static Routes with Dynamic Protocols Example Ip route 10.0.0.0 255.0.0.0 172.18.3.4 Igrp Redistribution Example Access-list 3 permitStatic Routing Redistribution Example IPC-381 RIP and Igrp Redistribution Example Eigrp Redistribution ExamplesIPC-382 Simple Redistribution Example Configuration for router R1 router bgp NetworkRIP and Eigrp Redistribution Examples 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 IPC-389 Following configuration, Ospf is on networkFollowing configuration Igrp autonomous system 1 is on 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 IPC-393 Default Passive Interface ExamplePolicy Routing Example No ip directed-broadcast Interface Serial Ip rip authentication key-chain trees media-type 10BaseT Following example configures a key chain named treesSet default interface null0 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 PIM on an Interface Enabling Dense ModeEnabling IP Multicast Routing IPC-403 Enables PIM dense mode on the interface Enabling Sparse ModeEnabling Sparse-Dense Mode Enables PIM sparse mode on the interface Configuring PIM Dense Mode State Refresh IPC-405 Configures the address of a PIM RP Configuring Auto-RPConfiguring a Rendezvous Point IPC-406 Choosing a Default RP Setting Up Auto-RP in a New InternetworkAdding Auto-RP to an Existing Sparse Mode Cloud Announcing the RP and the Group Range It Serves Starting to Use IP Multicast Filtering Incoming RP Announcement MessagesVerifying the Group-to-RP Mapping Preventing Join Messages to False RPs Controlling Access to IP Multicast Groups Igmp Features Configuration Task ListConfiguring a Router to Be a Member of a Group IPC-409 Selects the Igmp version that the router uses Changing the Igmp VersionRouters That Run Igmp Version Igmp host-query messages Configuring Igmp Version Sets the Igmp query timeoutIPC-411 Restrictions IPC-412 Routerconfig-if# ip igmp Changing the Igmp Query TimeoutConfiguring the Router as a Statically Connected Member Changing the Maximum Query Response Time Configures the number of times that the router sends Igmp Configuring Igmp Leave LatencyConfigures the interval at which the router sends Igmp Group-specific or group-source-specific with IGMPv3 query SAP Listener Support Configuration Task List Configuring the TTL ThresholdDisabling Fast Switching of IP Multicast Enabling SAP Listener Support Announcements Routerconfig-if# ip sap listenLimiting How Long a SAP Cache Entry Exists IPC-416 Configuring PIM Version Functional addressIPC-417 PIM Version 2 Configuration Task List PrerequisitesIPC-418 Defining a PIM Sparse Mode Domain Border Interface Configuring PIM Version 2 OnlyConfiguring PIM Sparse-Dense Mode Specifying the PIM Version Configuring Candidate BSRs Configuring Candidate RPsIPC-420 Making the Transition to PIM Version Deciding When to Configure a BSRConfigures the router to be a candidate RP IPC-421 Sparse Mode Advanced PIM Features Configuration Task ListDense Mode Monitoring the RP Mapping Information IPC-423 Shared Tree and Source Tree Shortest-Path Tree Shortest-path tree Delaying the Use of PIM Shortest-Path TreeUnderstanding Reverse Path Forwarding IPC-424 Modifying the PIM Router Query Message Interval Assigning an RP to Multicast GroupsIncreasing Control over RPs IPC-425 Understanding the PIM Registering Process PIM Version 1 CompatibilityIPC-426 Enabling Proxy Registering Configuring the IP Source Address of Register MessagesLimiting the Rate of PIM Register Messages IPC-427 Routerconfig-if# ip pim nbma-mode Enabling PIM Nonbroadcast Multiaccess ModeEnables PIM Nbma mode IPC-428 Configuring an IP Multicast Static Route IPC-429 Controlling the Transmission Rate to a Multicast Group Configuring RTP Header CompressionConfigures an IP multicast static route 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 Keeping VCs from Idling Idling PolicyHow the Idling Policy Works Idled Configuring an IP Multicast Boundary Configuring an Intermediate IP Multicast HelperIPC-438 Storing IP Multicast Headers IPC-439 Enables Cgmp Configuring Stub IP Multicast RoutingUse the show ip mpacket Exec command to display the buffer Enabling Cgmp Specified access list Messages to the specified IP address on a central routerIPC-441 Equal-cost paths Enabling Native Load SplittingEnabling Load Splitting Across Tunnels IPC-442 Configuring the Access Router Configuring the Router at the Opposite End of the TunnelIPC-443 Configuring Both Routers to RPF IPC-444 Tunnel0 Verifying the Load SplittingIPC-445 Serial1 IPC-446 Using IP Multicast Heartbeat IPC-447 PIM Sparse Mode Example IP Multicast Configuration ExamplesPIM Dense Mode Example IPC-448 PIM Version 2 Examples PIM Dense Mode State Refresh ExampleBSR Configuration Example This section provides examples in the following sections IPC-450 Border Router Configuration ExampleRFC 2362 Interoperable Candidate RP Example Ip pim sparse-dense-mode Router ospf RTP Header Compression Examples IPC-451 No ip route-cache Interface Ethernet2/1 IPC-452No keepalive Clockrate Interface Serial4/0 Version Password lab login No scheduler max-task-time endIPC-453 Ip route-cache IP Multicast over ATM Point-to-Multipoint VC Example IPC-454 IPC-455 Administratively Scoped Boundary ExampleIP Multicast Helper Example Atm pvc 2 0 16 ilmi Stub IP Multicast Example Router A-First Hop Router ConfigurationRouter C-Last Hop Router Configuration IPC-456 IPC-457 IP Multicast Load Splitting Across Equal-Cost Paths Ip address 100.1.3.3 255.255.255.0 bandwidth Clock rate IP Multicast Heartbeat ExampleIPC-458 Ip multicast heartbeat ethernet0 224.1.1.1 1 1 Configuring Source Specific Multicast SSM Components OverviewIPC-459 SSM Operations How SSM Differs from Internet Standard MulticastSSM IP Address Range 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 Benefits Denial of Service Attacks from Unwanted Sources InhibitedEasy to Install and Manage IP Multicast Address Management Not Required Igmp v3lite and URD Require a Cisco IOS Last Hop Router Ideal for Internet Broadcast ApplicationsLegacy Applications Within the SSM Range Restrictions Address Management Restrictions URD Intercept URL Limitations State Maintenance LimitationsIgmp Snooping and Cgmp Limitations Hsil Limitations Monitoring SSM SSM Configuration Task ListConfiguring SSM IPC-467 SSM with Igmp v3lite and URD Example SSM Configuration ExamplesSSM with IGMPv3 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 Packet Forwarding Bidir-PIM Configuration Task ListBidirectional Group Tree Building 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 Controlling Source Information That Your Router Originates Configured, this command provides nothingRequesting Source Information from an Msdp Peer Redistributing Sources Filtering SA Request Messages Using an Msdp FilterControlling Source Information That Your Router Forwards 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 Sparse mode region to send SA messages about active sources Including a Bordering PIM Dense Mode Region in MsdpConfigures the router on the border between a dense mode Dense mode region. The IP address of the interface is used Monitoring and Maintaining Msdp IPC-487 Logical RP Msdp Configuration ExamplesDefault Msdp Peer IPC-488 RouterA Configuration IPC-489 RouterB Configuration IPC-490No shutdown Router ospf No shutdown Interface Loopback10 RouterE ConfigurationIPC-491 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 Enabling PGM Host with a Physical Interface Verifying PGM Host ConfigurationEnabling PGM Host with a Virtual Host Interface IPC-496 IPC-497 PGM Router Assist Configuration Task List Enabling PGM Router AssistIPC-498 Enabling PGM Router Assist with a Physical Interface Monitoring and Maintaining PGM HostEnabling PGM Router Assist with a Virtual Host Interface IPC-499 PGM Host and Router Assist Configuration Examples Monitoring and Maintaining PGM Router AssistIPC-500 IPC-501 PGM Host with a Virtual Interface ExamplePGM Host with a Physical Interface Example Ip pgm host Interface vif1 IPC-502 PGM Router Assist with a Virtual Interface ExamplePGM Router Assist with a Physical Interface Example Ip pgm router IPC-503 IPC-504 Configuring Unidirectional Link Routing Udlr OverviewIPC-505 Udlr Tunnel IPC-506 Igmp Proxy IPC-507 Prerequisite Udlr Tunnel Configuration Task ListConfiguring Udlr Tunnel IPC-508 IPC-509 Configures Igmp on the interface to be unidirectional Igmp Udlr Configuration Task ListConfiguring the Igmp UDL UDL interface Monitoring Igmp Udlr Igmp Proxy Configuration Task ListChanging the Distance for the Default RPF Interface Displays Udlr information for directly connected multicast Configuring Igmp Proxy Verifying Igmp ProxyIPC-512 This section provides the following Udlr examples Udlr Configuration ExamplesUdlr Tunnel Example IPC-513 IPC-514 Configure tunnel as send-only Udlr tunnelIgmp Udlr Example 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 IPC-518 Upstream ConfigurationIntegrated Udlr Tunnel, Igmp UDLR, and Igmp Proxy Example Ip multicast-routing Interface Tunnel0 IPC-519 Downstream ConfigurationNo cdp enable Ip pim sparse-mode Ip igmp unidirectional-link IPC-520 Using IP Multicast Tools Multicast Routing Monitor OverviewIPC-521 Restrictions MRM Configuration Task ListConfiguring a Test Sender and Test Receiver IPC-522 Monitoring Multiple Groups IPC-523 Configuring a Manager Conducting an MRM TestIPC-524 Monitoring IP Multicast Routing Monitoring and Maintaining MRMIPC-525 Test Receiver Configuration MRM Configuration ExampleTest Sender 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 Enables Rgmp on a specified interface Verifying Rgmp ConfigurationRgmp and enters interface configuration mode Enabling Rgmp Monitoring and Maintaining Rgmp IPC-533 Rgmp Configuration Example IPC-534 Switch enable set igmp enable Switch enable set rgmp enable Switch a ConfigurationSwitch B Configuration IPC-535 IPC-536 Configuring Dvmrp Interoperability Basic Dvmrp Interoperability Configuration Task ListIPC-537 Dvmrp reports Configuring Dvmrp InteroperabilityResponding to mrinfo Requests Injected into Dvmrp Configuring a Dvmrp Tunnel IPC-539 Advertises network 0.0.0.0 to Dvmrp neighbors Advertising Network 0.0.0.0 to Dvmrp NeighborsEnabling Dvmrp Unicast Routing IPC-540 Limiting the Number of Dvmrp Routes Advertised Configuring a Dvmrp Summary AddressEnables Dvmrp unicast routing Changing the Dvmrp Route Threshold Adding a Metric Offset to the Dvmrp Route Disables Dvmrp automatic summarizationDisabling Dvmrp Automatic summarization 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 Interoperability Example Dvmrp Configuration ExamplesMonitoring and Maintaining Dvmrp 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