ResolvingtheIPv6prefixes(advertisedbyBGP)totheIPv4-next-hopaddress.
Eachprotocolupdatethreadproceedsindependentlyinalock-freemanner,allowmoreparallelism,lesscontentionandmakeitmorefutureproof.
SystemFlow
==========
BGPVPN6prefixupdate
BGPVPN6prefixdelete
IGPnext-hopprefixisresolved/added
IGPnext-hopprefixgoesaway
IGPnext-hopprefixismodified
BGPVPN6prefixupdate
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ALT(AlternativeLogicalTopology)
"separate","virtual"networkasanoverlayonthepublicinternetusing"tunnels"topropogatepathinformationneededtoforwardALTdatagrams.
ALTRouter
egdeALTrouterslearnEID-prefixesfromits"client"ETRsaggregatetheEID-prefixesadvertisingthesummaryprefixestootherALTrouters
MAPServer(MS)
edgeALTroutersthatprovidesaregistrati...[
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Lispsupport
draft-ietf-lisp-01.txt
draft-ietf-lisp-alt-01.txt(draft-ietf-lisp-interworking-00.txtdraft-ietf-lisp-ms-01.txtdraft-farinacci-lisp-lig-00.txtSupportLISPforbothIPv4andIPv6ITR,ETRandPTR(proxytunnelrouter)(LISP-NATforIPv4onlyALT-router,MAP-ResolverandMap-ServerCodeEffortIOSimplementation-Loc/IDsplitfunctionalityIOXimplementation-TE-ITR/TR-ETRfunctionalityLISPDeploymentLISP-ALTInfr...[
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RPFstrict
fiblookupofpacketsourceaddressmustreturnamatch
RPFstrictwithallowdefaultmode
performsstrictRPFcheckifsourceaddresslookupreturnsaregularFIBroute,otherwisethedefaultroutewillbeusedforstrictRPFcheckingaswell
RPFloose
fiblookupofpacketsourceaddressreturnsa"match"andthefiblookupresultindicatesthatthesourceisreachablethroughatleastone"real"interface
RPFloosewithallowdef...[
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IfathreadreceivesanIPCmessagefromathreadrunningatahigherpriority.WhilehandlingtheIPCmessage,thethreadwouldinheritthepriorityofthesenderoftheIPCmessage.
Ifathreadholdsamutexandanhigherprioritythreadblocksonthemutex,thenthethreadholdingthemutexwillinheritthepriorityoftheblockedthreaduntilthemutexisreleasedortheblockingprocessceasesblockingonthatresource.
ApplicationMemory-(totalmemory-images...[
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Inter-ASL3VPNConnectivityOptions
OptionA:Back-2-BackVRFconnectivity
CE2>(destinationIPaddress)>PE2>(PE-ASBR2LDP/TElabel|VPNLabelL2|DestinationIPaddress)>PE-ASBR2>(DestinationIPaddress)>PE-ASBR1>(PE1LDP/TElabel|VPNLabelL1|Destinationaddress)>PE1>(DesinationIPaddress)>CE1
OptionB:BP-eBGPviadirectlyconnectedASBRs
CE2>(destinationIPaddress)>PE2>(PE-ASBR2LDP/TElabel|VPNLabelL3|Destinati...[
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Whatis"Churn"
statemachinesareunabletoresolvethestateofagivenlink,e.g.,becausethePartnerSystemrepeatedlysendsconflictinginformationinitsLACPDUs.
INSYNC
thelinkhasbeenallocatedtothecorrectLAG,thegrouphasbeenassociatedwithacompatibleAggregator,andtheidentityoftheLAGisconsistentwiththesystemIDandoperationKeyinformationtransmitted.
OUTSYNC
thelinkisnotintherightAggregatio...[
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IPtoMPLS
ipleaf>ldi>li>nh
MPLStoMPLS
mplsleaf>ldi>li>nh
mplsleaf>ldi>imp_null_li1>nh
MPLStoIP
mplsleaf>ldi>unlabelled_lable_li>nh(v4)
mplsleaf>ldi>imp_null_li>nh(v4)
MPLSVPNImp
vrf_leaf>ldi>vpn_li>ldi>igp_li>nh
MPLSVPNDisp
vpn_label_entry>ldi>imp-null-li>nh(v4)
VPNde-aggregate
vpn_label_entry>ldi>deagg_li
TLU2labelA:IGPorTE-midpointlabel
...[
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COMMON
========
idb/nhinfo/adj
leaf
ldi/rldi/ecldi/shared_ldi/lw_ldi
table
li
bwalk
frr
ip_ldp_frr
lspa
mol
rpf
IPv4
========
ipv4leaf/vpn4leaf
IPv6
========
ipv6leaf/vpn6leaf/ipv6linklocal
MPLS
========
mplsleaf/mpls_te/mpls_te_frr/p2mp_frr
[
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打击好像都是同时而至，经历了两记重锤，能缓过气就不错了。
WhatshouldIdo?
Resume?
Taxreport?
ContactbrotherQu?
DoIhaveanyinnovationideas?
[
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