H12-831_V1.0 HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Questions and Answers

in the pictureLSAis generated by this router

ShouldLSAThe described destination network is10.0.23.0/24

ShouldLSAis of typeAS-extermal-LSA

This device isA, BR

15

5

10

1

The phenomenon is abnormal, the device has an operating system failure

Engineer A's operation error

Engineer B's operation error

The destination port numbers of the UDR packets serving tracert are different, and the hashes reach different equivalent next hops.

PThe device only needs to have the basicM PLSForwarding capability, not maintainedVPNRelated Information

between sites viaVPNMutual visits, a site can only belong to1indivualVPN

In general,CEThe device does not perceiveVPNexistence, andCEDevice does not require supportMPLS,MP-BGP

Wait

BGP/MPLS IP VPNnetwork architecture byCE(CustomerEdge).PE(ProviderEdge)and P( Provider)consists of three parts, includingPEandPis operator equipment,CEYesBGP/MPLS IPVPNUser settings prepare

A, CL

Filter-Policy

IP Prefix List

Route-Policy

make the device unbuildableIS-ISNeighbor

enable the device to support moreIS-ISrouting entry

make the device unable to learnIS-ISrouting information

no real purpose

ArealNone inType3 LSA. maybeR2in the area1In the correct directiontype3 LSAfiltered

Area 1forNSSAarea

R2WillType7 LSAThe default route is converted toType5 LSAdefault route for

R2existOSPFThe default route is delivered in the process

True

False

AS-External-LSA

Router-LSA

ASBR-Summary-LSA

Network-LSA

PEandCEpass betweenBGPWhen interactive routing, you need toCEup for eachVPNinstance creationBGPprocess

MP-BGPthe message type,VPNv4route advertisement strategy andBGP-4same

MP-BGPneeds to beVPNv4route assignment private network label

MP-BGPpass throughMP_REA, CH_NLRIandMP_UREA, CH_NLRItwo properties to advertiseVPNv4routing

R1will produceRouter-LSADescribing the device interface information will be received at the same timeR2andR3produced Router-LSA

R1ofLSDBhaveR3producedNetwork LSA. illustrateR3may be from this linkDR

R1will receiveR2produced2indivualLink-LSA. Describe separatelyR2Information about the two links connected

R2asA, BRWill produceInter-Area-Prefix-LSAdescribeArea 1ofIPv6address prefix, and advertise GiveR1andR3

DHCP SnoopingYou can prevent illegal attacks by setting trusted ports (all interfaces are untrusted by default.

mouth)

Global enableDHCP Snoopingfunction, without any post-parameters, the device only processes by default

DHCPv4message

Enable in interface viewDHCP Snoopingfunction, then all theDHCPThe message command function takes effect

existVLANEnable in viewDHCP Snoopingfunction, then all interfaces of the device receive data belonging to thisVLANofDHCPThe message command function takes effect

View eachVLANphysical interface information bound to the

See what's currently createdVLAN

CheckVLANIFinterfaceIPaddress

View all included"VLAN"Configuration of keywords

indivualIS-ISprocess can only be used with1indivualVPNinstance association

if oneIS-ISThe router creates multipleIS-ISProcess, each process does not affect each other, independent of each other

1indivualIS-ISprocess can be associated with multiple differentVPNinstance association

1indivualVPNInstances can be associated with multiple differentIS-ISprocess association

Routing protocol configuration error

Incorrect routing policy configuration

Port address assignment problem

The configured user permissions are too low

Confirm data link layer service traffic path

Confirm the network layer service traffic path

Investigate service traffic path planning in the network design phase

Confirm the frequency of failure

existCEIn the case of multi-homing, enableBGP ASThe number substitution function may cause routing loops that can be passed throughBGP SoDpreventVPNIntra-site routing loops

whenPEandCEbetweenBGPWhen exchanging routing information, if twoVPNThe autonomous system the site is in uses the same privateASnumber, can be passed throughASThe number replacement function is to use any specifiedASreplace the received private network route with theASnumber to preventASRoutes are discarded due to duplicate numbers

existHub&Spokescene, whenHub-CEandHub-PEuseIGPTimeSpoke-PEandSpake-CEcannot makeEBGP

whenPEandCEbetweenBGPWhen exchanging routing information, you do not need toPEPerform private network route import on theBGPoperation

display bgp routing-table address-family vpnv4

display bgp vpnv4 routing-table

display bgp routing-table ipv4-family vpnv4

display vpnv4 bgp routing-table

R1access172.17.1.5There is a loop

R1have access172.17.1 5routing

R1no access172.17.1.5routing

R1access172.17.1.5There is no problem with the path

200

150

50

100

of this routerRouter IDfor10.0.12.1

This router isDR

This router has established an adjacency relationship

This router supports external route import

Open Notepad and enterundo terminal debugging,Copy the command line and paste it intoMonitorinterface

Open Notepad and enterundo debugging all,Copy the command line and paste it intoMonitorinterface

Open Notepad and enterundo terminal monitor,Copy the command line and paste it intoMonitorinterface

exit currentMonitorinterface, re-SSHLog in to the device to open a new oneMonitorinterface

True

False

ShouldpingsendYindivualICMPask

ShouldpingofICMPThe request packet size isZ(excludingIPandICMPhead)

Shouldpingpackage sourceIFPaddress isX

Shouldpingpackage belongs toVPNexampleM

pingpackage sourceIPaddress isR1any direct interface address of

pingpackage sourceIFPaddress isR1direction10.5.16.2the optimalIPThe outgoing interface address of the route, and is not

10.1.1.1

pingpackage sourceIPaddress is10.1.1.1

pingPurpose of the packageIPaddress is10.1.1.1and10.5.16.2

This message describes only oneBGPAttribute: Multi-protocol unreachableNLRIAttributes

This message describes the current cancellationIPv6routing

The maximum and the preceding length of the routing address described in this packet is:2001:db8:2345:l::l/128

The next hop address of the route described in this packet is:2001:db8:2345:l::l\

penultimate jumpLSRWhen performing label exchange, if the exchanged label value is found to be3,By default, the label is popped and the message is sent to the last hop

1024Above areLDP,RSVP-TE. MP-BGPLabel space shared by other dynamic signaling protocols

16~1023is staticLSPand staticCR-LSPshared tab space

If the out tag value is0,The router will directly discard the packet

True

False

MPLS VPNThe outer label is made byLDPprotocol or statically assigned, the inner label is assigned by the correct end

MP-BGPassigned by neighbors

MPLS VPNEThe outer layer label is called the private network label, and the inner layer label is called the public network label

By default, the outer label is singled out before the packet is forwarded to the last hop device

Layer labels are used inPEThe device sends the packet correctly to the correspondingVPNmiddle

Open

Keepalive

Update

Notification

decreasedIPwaste of address

added availableM LANquantity

Increased addressing flexibility

accomplishSub-VLANIsolation between broadcast domains

Prevent RR from receiving too many routes and causing insufficient memory

prevent suboptimal

prevent loops

Prevent the client from receiving too many routes and causing it to run out of memory

True

False

200$|300$

A200|A300

_(200 300)_

_[200 300]

10.0.1.0/24:

10.0.0.0/24

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