Cisco IOS XR IP Addresses and Services Configuration Guide for the Cisco CRS Router, Release ...

274 Pages·2016·4.33 MB·English

Cisco IOS XR IP Addresses and Services Configuration Guide for the
Cisco CRS Router, Release 4.2.x
First Published: December01,2011
Last Modified: June01,2012
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Text Part Number: OL-26066-04
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CONTENTS
Preface Preface xiii
ChangestoThisDocument xiii
ObtainingDocumentationandSubmittingaServiceRequest xiii
CHAPTER 1 ImplementingAccessListsandPrefixLists 1
PrerequisitesforImplementingAccessListsandPrefixLists 2
RestrictionsforImplementingAccessListsandPrefixLists 2
RestrictionsforImplementingACL-basedForwarding 3
InformationAboutImplementingAccessListsandPrefixLists 3
AccessListsandPrefixListsFeatureHighlights 3
PurposeofIPAccessLists 4
HowanIPAccessListWorks 4
IPAccessListProcessandRules 4
HelpfulHintsforCreatingIPAccessLists 5
SourceandDestinationAddresses 6
WildcardMaskandImplicitWildcardMask 6
TransportLayerInformation 6
IPAccessListEntrySequenceNumbering 6
SequenceNumberingBehavior 6
IPAccessListLoggingMessages 7
ExtendedAccessListswithFragmentControl 8
PolicyRouting 10
CommentsAboutEntriesinAccessLists 10
AccessControlListCounters 10
BGPFilteringUsingPrefixLists 11
HowtheSystemFiltersTrafficbyPrefixList 11
InformationAboutImplementingACL-basedForwarding 12
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ACL-basedForwardingOverview 12
ACL-basedForwardingFunctions 12
HowtoImplementAccessListsandPrefixLists 13
ConfiguringExtendedAccessLists 13
ApplyingAccessLists 15
ControllingAccesstoanInterface 15
ControllingAccesstoaLine 17
ConfiguringPrefixLists 18
ConfiguringStandardAccessLists 19
CopyingAccessLists 21
SequencingAccess-ListEntriesandRevisingtheAccessList 22
CopyingPrefixLists 24
SequencingPrefixListEntriesandRevisingthePrefixList 25
HowtoImplementACL-basedForwarding 26
ConfiguringACL-basedForwardingwithSecurityACL 27
ConfiguringPureACL-BasedForwardingforIPv6ACL 28
ConfiguringPureACL-basedForwardingforACL 29
ACL-Chaining 30
ACL-ChainingOverview 30
RestrictionsforCommonACL 31
ConfiguringanInterfacetoacceptCommonACL 31
ConfigurationExamplesforImplementingAccessListsandPrefixLists 32
ResequencingEntriesinanAccessList:Example 32
AddingEntrieswithSequenceNumbers:Example 33
AddingEntriesWithoutSequenceNumbers:Example 33
ConfigurationExamplesforImplementingACL-basedForwarding 33
ACLwithSecurityandACL-basedForwardingAccessControlEntry:Example 34
PureACL-basedForwardingforACLExample 34
IPv6ACL-basedForwardingExample 34
IPv6ACLinClassMap 35
ConfiguringIPv6ACLQoS-AnExample 36
ConfiguringanInterfacetoacceptCommonACL-Examples 38
AdditionalReferences 39
CHAPTER 2 ConfiguringARP 43
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PrerequisitesforConfiguringARP 43
RestrictionsforConfiguringARP 44
InformationAboutConfiguringARP 44
IPAddressingOverview 44
AddressResolutiononaSingleLAN 44
AddressResolutionWhenInterconnectedbyaRouter 45
ARPandProxyARP 45
ARPCacheEntries 46
HowtoConfigureARP 46
DefiningaStaticARPCacheEntry 46
EnablingProxyARP 47
EnablingLocalProxyARP 48
CHAPTER 3 ImplementingCiscoExpressForwarding 49
PrerequisitesforImplementingCiscoExpressForwarding 50
InformationAboutImplementingCiscoExpressForwardingSoftware 50
KeyFeaturesSupportedintheCiscoExpressForwardingImplementation 50
BenefitsofCEF 50
CEFComponents 51
BorderGatewayProtocolPolicyAccounting 51
ReversePathForwarding(StrictandLoose) 52
RouteProcessorManagementEthernetForwarding 53
Per-FlowLoadBalancing 53
BGPAttributesDownload 54
GTPTunnelLoadBalancing 54
HowtoImplementCEF 55
VerifyingCEF 55
ConfiguringBGPPolicyAccounting 56
VerifyingBGPPolicyAccounting 57
ConfiguringaRoutePurgeDelay 58
ConfiguringUnicastRPFChecking 59
ConfiguringModularServicesCard-to-RouteProcessorManagementEthernetInterface
Switching 60
ConfiguringPer-FlowLoadBalancing 61
Configuringa7-TupleHashAlgorithm 61
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VerifyingtheCEFExactRoutewith7-TupleParameters 62
ConfiguringBGPAttributesDownload 63
ConfiguringBGPAttributesDownload 63
ConfigurationExamplesforImplementingCEFonRoutersSoftware 64
ConfiguringBGPPolicyAccounting:Example 64
VerifyingBGPPolicyStatistics:Example 67
ConfiguringUnicastRPFChecking:Example 78
ConfiguringtheSwitchingofModularServicesCardtoManagementEthernetInterfaces
ontheRouteProcessor:Example 78
ConfiguringPer-FlowLoadBalancing:Example 78
ConfiguringBGPAttributesDownload:Example 79
ConfiguringGTPTunnelLoadBalancing:Example 79
AdditionalReferences 81
CHAPTER 4 ImplementingtheDynamicHostConfigurationProtocol 83
PrerequisitesforConfiguringDHCPRelayAgent 83
InformationAboutDHCPRelayAgent 84
HowtoConfigureandEnableDHCPRelayAgent 84
ConfiguringandEnablingtheDHCPRelayAgent 85
ConfiguringaDHCPRelayProfile 85
ConfiguringtheDHCPv6(Stateless)RelayAgent 86
EnablingDHCPRelayAgentonanInterface 87
DisablingDHCPRelayonanInterface 87
EnablingDHCPRelayonaVRF 88
ConfiguringtheRelayAgentInformationFeature 89
ConfiguringRelayAgentGiaddrPolicy 91
ConfiguringtheBroadcastFlagPolicy 91
ConfiguringaDHCPProxyProfile 92
DHCPv4Client 93
EnablingDHCPClientonanInterface 94
InformationAboutConfiguringDHCPIPv6InformationPools 95
HowtoConfigureDHCPIPv6InformationPools 95
ConfiguringCiscoIOSXRDHCPIPv6InformationPoolOption 95
ConfigurationExamplesfortheDHCPRelayAgent 96
DHCPRelayProfile:Example 96
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DHCPRelayonanInterface:Example 97
DHCPRelayonaVRF:Example 97
RelayAgentInformationOptionSupport:Example 97
RelayAgentGiaddrPolicy:Example 97
CiscoIOSXRBroadcastFlagPolicy:Example 97
AdditionalReferences 98
CHAPTER 5 ImplementingHostServicesandApplications 101
PrerequisitesforImplementingHostServicesandApplications 101
InformationAboutImplementingHostServicesandApplications 102
KeyFeaturesSupportedintheCiscoIOSXRsoftwareHostServicesandApplications
Implementation 102
NetworkConnectivityTools 102
Ping 102
Traceroute 103
DomainServices 103
TFTPServer 104
FileTransferServices 104
RCP 104
FTP 104
TFTP 105
Ciscoinetd 105
Telnet 105
HowtoImplementHostServicesandApplications 105
CheckingNetworkConnectivity 105
CheckingNetworkConnectivityforMultipleDestinations 106
CheckingPacketRoutes 106
ConfiguringDomainServices 107
ConfiguringaRouterasaTFTPServer 108
ConfiguringaRoutertoUsercpConnections 109
ConfiguringaRoutertoUseFTPConnections 111
ConfiguringaRoutertoUseTFTPConnections 113
ConfiguringTelnetServices 114
Configuringsyslogsource-interface 114
ConfigurationExamplesforImplementingHostServicesandApplications 115
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CheckingNetworkConnectivity:Example 115
ConfiguringDomainServices:Example 117
ConfiguringaRoutertoUsercp,FTP,orTFTPConnections:Example 117
AdditionalReferences 118
CHAPTER 6 ImplementingHSRP 121
PrerequisitesforImplementingHSRP 122
RestrictionsforImplementingHSRP 122
InformationAboutImplementingHSRP 122
HSRPOverview 122
HSRPGroups 122
HSRPandARP 125
Preemption 125
ICMPRedirectMessages 125
HowtoImplementHSRP 125
EnablingHSRP 125
EnablingHSRPforIPv6 127
ConfiguringHSRPGroupAttributes 128
ConfiguringtheHSRPActivationDelay 132
EnablingHSRPSupportforICMPRedirectMessages 134
MultipleGroupOptimization(MGO)forHSRP 135
CustomizingHSRP 135
ConfiguringaPrimaryVirtualIPv4Address 138
ConfiguringaSecondaryVirtualIPv4Address 139
Configuringaslavefollow 140
ConfiguringaslaveprimaryvirtualIPv4address 142
ConfiguringaSecondaryVirtualIPv4addressfortheSlaveGroup 143
Configuringaslavevirtualmacaddress 144
ConfiguringanHSRPSessionName 145
BFDforHSRP 146
AdvantagesofBFD 147
BFDProcess 147
ConfiguringBFD 147
EnablingBFD 147
ModifyingBFDtimers(minimuminterval) 148
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ModifyingBFDtimers(multiplier) 149
EnhancedObjectTrackingforHSRPandIPStatic 150
ConfiguringobjecttrackingforHSRP 151
HotRestartabilityforHSRP 152
ConfigurationExamplesforHSRPImplementationonSoftware 152
ConfiguringanHSRPGroup:Example 152
ConfiguringaRouterforMultipleHSRPGroups:Example 152
AdditionalReferences 153
CHAPTER 7 ImplementingLPTS 155
PrerequisitesforImplementingLPTS 155
InformationAboutImplementingLPTS 155
LPTSOverview 156
LPTSPolicers 156
ConfiguringLPTSPolicerwithIPTOSPrecedence 156
ConfiguringLPTSPolicers 157
ConfigurationExamplesforImplementingLPTSPolicers 158
ConfiguringLPTSPolicers:Example 159
AdditionalReferences 163
CHAPTER 8 ImplementingNetworkStackIPv4andIPv6 165
PrerequisitesforImplementingNetworkStackIPv4andIPv6 166
RestrictionsforImplementingNetworkStackIPv4andIPv6 166
InformationAboutImplementingNetworkStackIPv4andIPv6 166
NetworkStackIPv4andIPv6Exceptions 166
IPv4andIPv6Functionality 166
IPv6forCiscoIOSXRSoftware 167
LargerIPv6AddressSpace 167
IPv6AddressFormats 167
IPv6AddressType:Unicast 168
AggregatableGlobalAddress 169
Link-LocalAddress 170
IPv4-CompatibleIPv6Address 171
IPv6AddressType:Multicast 171
SimplifiedIPv6PacketHeader 172
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IPv6NeighborDiscovery 177
IPv6NeighborSolicitationMessage 177
IPv6RouterAdvertisementMessage 179
IPv6NeighborRedirectMessage 180
ICMPforIPv6 181
AddressRepositoryManager 182
AddressConflictResolution 182
ConflictDatabase 182
MultipleIPAddresses 182
RecursiveResolutionofConflictSets 182
Route-TagSupportforConnectedRoutes 183
HowtoImplementNetworkStackIPv4andIPv6 184
AssigningIPv4AddressestoNetworkInterfaces 184
IPv4Addresses 184
IPv4VirtualAddresses 185
ConfiguringIPv6Addressing 186
IPv6MulticastGroups 186
IPv6VirtualAddresses 188
AssigningMultipleIPAddressestoNetworkInterfaces 188
SecondaryIPv4Addresses 188
ConfiguringIPv4andIPv6ProtocolStacks 190
EnablingIPv4ProcessingonanUnnumberedInterface 190
IPv4ProcessingonanUnnumberedInterface 191
ConfiguringICMPRateLimiting 192
IPv4ICMPRateLimiting 192
IPv6ICMPRateLimiting 192
SelectingFlexibleSourceIP 193
ConfiguringIPARMConflictResolution 194
StaticPolicyResolution 194
LongestPrefixAddressConflictResolution 195
HighestIPAddressConflictResolution 195
GenericRoutingEncapsulation 196
IPv4/IPv6ForwardingoverGRETunnels 197
IPv6forwardingoverGREtunnels 197
ConfigurationExamplesforImplementingNetworkStackIPv4andIPv6 197
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