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GR(graceful restart)可以实现所有协议重启时数据转发不中断的效果。
A.错误
B.正确
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更多 “ GR(graceful restart)可以实现所有协议重启时数据转发不中断的效果。 A.错误B.正确 ” 相关考题
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生成树协议可以把交换机端口置于五种状态机,下列关于阻塞状态说法正确的是()A.数据转发被阻塞,进行地址学习B.数据转发被阻塞,监听BPDUC.数据转发被阻塞,不监听BPDUD.进行数据转发,进行地址学习
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Which graceful restart parameter is negotiated during BGP session establishment?()
A. Grace-timeB. Restart-timeC. Stale-routes-timeD. Restart-update-time
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warm restart和cold restart 的主要区别是什么A、warm restart使系统重新启动,cold restart使系统断电。B、warm restart不会删除数据,cold restart会删除数据。C、warm restart使系统恢复当前备份,cold restart使系统恢复前一次的备份。D、warm restart保留ATA卡的所有内容,cold restart删除ATA卡的所有内容。
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What are the two benefits of graceful restart?()A、Graceful restart allows session information recovery without disruption to the network.B、A node can perform a graceful restart to help a neighbor recover its state. The label bindings are kepton state information, which helps the failed node recover faster and does notaffect the current for wardtraffic.C、Graceful restart allows a node to recover state from its neighbor when there is no RP or before thedevice undergoes SSO.D、Graceful restart does not allow session information recovery.E、During a graceful restart, the router removes any stale prefixes after a timer for stale entries expires
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Which two features must be configured to perform AToM NSF?()A、FRRB、SSOC、distribute CEFD、switch virtual pathE、graceful restart
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为了支持GR,IS-IS协议扩展了三个定时器T1/T2/T3,重启路由器只有一个T3定时器,取值为所有GR-Aware邻居Hello TLV211中的Remaining time的最小值,在路由器重启之后马上启动。
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Which graceful restart parameter is negotiated during BGP session establishment?()A、Grace-timeB、Restart-timeC、Stale-routes-timeD、Restart-update-time
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当使用admin equipment reboot-isam hot-restart对7360 OLT进行重启时,以下说法正确的是:A、OLT业务会中断一段时间B、OLT业务不会中断C、OLT管理会中断一段时间D、OLT管理不会中断
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IS-IS协议为了支持GR,需要完成以下功能()。A、GR-Capable路由器重启期间,要尽快把自己产生的LSP老化并从网络中清除B、GR-Helper对于重启前就处于Up状态的重启路由器邻居关系,在GR期间,仍然保持处于Up状态C、重启发生后,新的主板上的IS-IS需要尽快同各个具备GR-Aware能力的邻居同步链路状态数据库D、GR-Capable路由器重启期间,要在极短的时间内将新的转发信息下发到接口板,避免形成临时的路由黑洞
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The OSPF RFC 3623 Graceful Restart feature allows you to configure IETF NSF in ultivendor networks. When using OSPF Graceful Restart,which mechanism is used tocontinue forwarding packets during a switchover?()A、Reverse Path ForwardingB、Hardware-based forwardingC、UDP forwardingD、Layer 2 Forwarding
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BGP协议为了支持GR,做了如下扩展()。A、在BGP的OPEN消息中,增加了一种表示GR的能力,称为Graceful Restart Capability。这种能力被BGP用来向邻居表示其支持Graceful restart的能力B、在Keepalive报文中增加TLV211表明路由器发生了重启C、定义了两个重要的定时器:Restart timer和Wait-For-EOR timerD、在Update报文中,新增加一个EOR(End-of-RIB)标志,用于表明路由信息向邻居更新完毕
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A cluster node has a failed fibre adapter requiring the node to be halted to replace it. To minimize downtime, what is the appropriate method of performing this repair?()A、 Perform the cIRGmove command to move the node’s resources to another cluster node.B、 Perform a graceful stop of the cluster,replace the adapter,and restart the cluster.C、 Perform a force stop of the cluster node,replace the adapter,and restart the cluster. D、 Perform a graceful takeover of the cluster,replace the adapter,and restart the cluster.
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多选题BGP GR Restrater进行主备倒换时,邻居检测到因为tcp连接中断,下面哪些操作时正确的()A保留协商过程中GR Restarter通告的各个地址族的路由表,并对这些表项作老化标记,启动一个Stale定时器B启动Restarter time定时器C如果在RE starter time定时器超时后,GR Restarter仍然没有和自己重建BGP连接,保留所有与GR Restarter和相关的路由和转发表项D保持邻居关系不中断
考题
判断题为了支持GR,IS-IS协议扩展了三个定时器T1/T2/T3,重启路由器只有一个T3定时器,取值为所有GR-Aware邻居Hello TLV211中的Remaining time的最小值,在路由器重启之后马上启动。A
对B
错
考题
多选题What are the two benefits of graceful restart?()AGraceful restart allows session information recovery without disruption to the network.BA node can perform a graceful restart to help a neighbor recover its state. The label bindings are kepton state information, which helps the failed node recover faster and does notaffect the current for wardtraffic.CGraceful restart allows a node to recover state from its neighbor when there is no RP or before thedevice undergoes SSO.DGraceful restart does not allow session information recovery.EDuring a graceful restart, the router removes any stale prefixes after a timer for stale entries expires
考题
单选题下面哪个不属于NSF技术对系统的要求()A
硬件要求.系统双控板冗余配置.分布式结构,数据转发和控制分离B
软件要求.正常运行时能备份设备信息.主备倒换时接口板不需要重启,接口保持UP,接口板转发表不撤销C
协议要求.可扩展支持GR功能的相关网络协议D
电源要求.必须具备1+1以上级别的备份电源
考题
多选题BGP协议为了支持GR,做了如下扩展()。A在BGP的OPEN消息中,增加了一种表示GR的能力,称为Graceful Restart Capability。这种能力被BGP用来向邻居表示其支持Graceful restart的能力B在Keepalive报文中增加TLV211表明路由器发生了重启C定义了两个重要的定时器:Restart timer和Wait-For-EOR timerD在Update报文中,新增加一个EOR(End-of-RIB)标志,用于表明路由信息向邻居更新完毕
考题
多选题Which three pre-conditions must be met before an OSPF router can perform graceful restart? ()ARouter must be an ABR.BRouter must contain one sham link.CThe network topology must be stable.DRouter must be able to forward packets.ENeighbors must support graceful restart.
考题
多选题Which pre-conditions must be met before an OSPF router can perform graceful restart?()ARouter must be ABRBRouter must contain one sham link.CThe network topology must be stable.DRouter must be able to forward packets.ENeighbors must support graceful restart.
考题
单选题生成树协议可以把交换机端口置于五种状态机,下列关于disable状态说法正确的是()A
数据转发被阻塞,监听BPDUB
数据转发被阻塞,进行地址学习C
进行数据转发,不发送BPDUD
数据转发被阻塞,不监听BPDU
考题
多选题NSF对于系统的要求描述错误的是()A硬件要求.系统双主控冗余配置,分布式结构,数据转发和控制分离B系统软件要求,主板正常运行的过程中,会把配置信息.接口状态信息备份到备用板;主备倒换的时候,接口板不需要重启,接口保持up,接口板转发不撤销C协议要求.要求各相关网络协议具备GR(优雅重启)能力,但是LDP不能支持GRD对邻居设备没有要求
考题
判断题NSF(不间断转发)是一项重要的高可靠性技术,它可以保证路由器控制层面出现故障时,数据转发仍然正常执行,从而保护网络上关键业务不受影响,同时对于支持NSF的协议不需要具有GR能力。A
对B
错
考题
多选题IS-IS协议为了支持GR,需要完成以下功能()。AGR-Capable路由器重启期间,要尽快把自己产生的LSP老化并从网络中清除BGR-Helper对于重启前就处于Up状态的重启路由器邻居关系,在GR期间,仍然保持处于Up状态C重启发生后,新的主板上的IS-IS需要尽快同各个具备GR-Aware能力的邻居同步链路状态数据库DGR-Capable路由器重启期间,要在极短的时间内将新的转发信息下发到接口板,避免形成临时的路由黑洞
考题
多选题Which three pre-conditions must be met before an OSPF router can perform graceful restart?()ARouter must be ABRBRouter must contain one sham link.CThe network topology must be stable.DRouter must be able to forward packets.ENeighbors must support graceful restart.
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