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

BGP-VPNv4address family

BGP-IPV6Unicast address family

BGP-IPV4broadcast address family

BGP-MPexampleIPv6address family

both endsVRRPBackup group preemption delay configuration is inconsistent

BackupDevice Interface Packet Loss

the time interval of the notification message is too small

transmissionVRRPLink flapping of advertisement packets

R4belong only toLevel-2

system-IDforee8c.a0c2.baf2device whose type isLevel-1-2

system-IDforee8a0c2.baf2device whose type isLevel-1

R4belong only toLevel-1

The device cannot log in remotely

pass throughPINGSerious packet loss during network test with command

CPUOccupancy exceeds70%

use on the deviceDISPLAY INTERFA, CEcommand to view interface statistics, it is found that the interface receives a large number of

broadcast message

sham linkThe coat is twoVPNlinks between instances, eachVPNThere must be one in the instancesham linkthe endpoint address, it must bePEon the routerVPNone in the address space has32bitmaskedLoopbackinterface address

becauseVPNflow is throughMPLSBackbone forwarding,sham linkThe routing cost should be less thanbackdoorroadOSPFrouting cost

sham linkThe endpoint address of theBGPasVPhv4address published. passedsamlikThe route can also be reconfigured withVPNv4The form of routing is introduced toBGP

Sham linkIt can be configured in any area and needs to be manually configured and the local endVPNThe instance must have tosham linkdestination address (peerPEofsham linkendpoint address) routing

The system automatically allocates aI. also known asTunnel ID

whenIPmessage entryMRLSdomain, the first thing to look at isFIBsurface

ifTumel IDvalue is not0x0,into the normalIPForwarding process

ifTunnel IDvalue is0x0test entryMPLSForwarding process 

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

display interface brief

display clock

display alarm

display current-configuration

R3andR1ofIS-LevelMismatch

R3andR1different area codes

R3andR1ofIIHAuthentication failed

R3andR1ofSystem

R3andR4the interconnect interfacecircuit-typeMismatch

R3andR4different area codes

R3andR4ofIS-LevelMismatch

R3andR1ofIIHAuthentication failed

True

False

display device-® Display version-® Display memory-usage-® Display cpu-usage-③

display device-® Display version-® Display memory-usage-® Display cpu-usage-④

display device-® Display version-® Display memory-usage-® Display cpu-usage-④

display device-® Display version-® Display memory-usage-® Display cpu-usage-④

Configured correctly

No global enable requiredMPLS

No need to enable on the portMPLS

two devicesmpls Isr-idcannot be configured the same

Created by assigning labels staticallyLSPIt can also be dynamically adjusted according to changes in network topology, without administrator intervention.

pre

The principle to be followed when manually assigning labels is: the value of the outgoing label of the upstream node is the value of the incoming label of the downstream node

LSPstaticLSPand dynamicLSPtwo kinds. staticLSPManual configuration by administrator, dynamicLSPthen use

Dynamic establishment of label protocol

dynamicLSPDynamically established through the label publishing protocol, such asMP-BGP, RSVP-TE, LDP

10.0.2.2and10.0.3.3 (Non-backbone area received3class received does not count)

10.0.3.3and10.0.5.5 (same area1kind)

10.0.4.4and10.022 (normal calculation3kind)

10.022and10.0.5.5 (Non-backbone area received3class received does not count)

True

False

True

False

eachGroup VLANmust bind aPrincipal VLAN

Separate VLANscan andMUX VLANall withinVLANcommunication

eachSeparate VLANsmust bind aPrincipal VLAN

Principal VLANcan andMUX VLAIall withinVLANcommunication

OSPFofhelloThe sending interval is in seconds, more thanBFDInduction link status is fast

BFDThe message sending interval can reach the millisecond level, which is less thanOSPFInduction link status is slow

Detected at the millisecond levelBFD. associationOSPFstate, fulfilledOSPFThe purpose of quickly sensing the status of the tank

BFDAny change in state will not affectOSPFneighbor state

Cluster List

Originator ID

Nexthop

AS-PATH

View eachVLANphysical interface information bound to the

See what's currently createdVLAN

CheckVLANIFinterfaceIPaddress

View all included"VLAN"Configuration of keywords

The Next_Hop attribute must be an IPv6 global unicast address when routing

BGP4+ transmits routing information between peers through Update packets

If the MP_REA, CH_NLRI attribute is carried in the Update packet, it indicates that the advertisement is a reachable route

When the route is transmitted, it will carry recognized mandatory attributes such as AS_Path

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

Cluster List k

Nexthop

AS-PATH

Originator ID

On a PE device, each VP instance corresponds to a value of 0. On the same PE device, the RD value must be unique.____, ____, ____.

RD can be used to control the publication of 1 routing information

RD is encapsulated in Update message as BGP extended community attribute during delivery

After the PE receives the IPv4 route from the CE, it adds RD to the IPv4 route to convert it into a globally unique VPN-IPv4 route, and publishes it on the public network

MPLSThe system has a variety of label publishing protocols, such asLDPis a label publishing agreement

Labeled byMIPLSheader of messageBIt has global significance, that is, the label values of all routers cannot be repeated.

A label is a fixed-length identifier with only local significance, which is used to uniquely identify the group to which a group belongs.FEC

MPLSSupports single-layer labels as well as multi-layer labels

PEIorPE2not presentBGP-VPNv 4Enabling neighbors in unicast address family view

PE1orPE2±ofVPNInstance parameter configuration error

PE1andPE2betweenLSPTunnel not established

PF1orPE2with each otherCEMisconfigured routing protocol between

area. have8indivualMAThe internet

area. have4indivualMAThe internet

area. have4router

area. have8router

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

To the other road on the link Tiandikou noon-

Advertise this router's interface to other routers on the linkID

Advertise the link-local address of this interface to other routers on the link

Advertise to other routers on the link the originatingNetwork-LSAOptions set in