ospf

ospf

1. * Why don't I see OSPF neighbors as FULL/DR or FULL/BDR on my serial link?

*为什么我看不到的OSPF邻为伴，充分/博士或全职/ bdr对我的串行链路？

2. * Can I have one numbered side and leave the other side unnumbered in OSPF?

*我可以有一个编号的一面留给对方，在未编号的OSPF ？

3. * Do I need any special commands to run OSPF over asynchronous links?

*我是否需要任何特殊的命令来运行OSPF的异步链接？

4. EIGRP routers keep route and topology information readily available in RAM so they can react quickly to changes. Like OSPF, EIGRP saves this information in several tables and databases.

EIGRP路由器储存路径和拓扑资讯在立即可用的RAM中，使其能迅速回应改变。如同OSPF一样，EIGRP储存这些资讯在好几个表格和资料库内。

5. NBMA (non-broadcast multiple access) is one of four network types in the OSPF (Open Shortest Path First) communications protocol.

NBMA（非广播多路访问网络）是OSPF（开放最短路径优先）通信协议中四种网络的一种。

6. The Open in OSPF means that it is open to the public and is non-proprietary.

OSPF中的开放的意思是它公开给公众且非专属的。

7. OSPF selects the fastest loop-free path from the SPF tree as the best path in the network.

OSPF从SPF树选择最快的无迴圈路径当做网路的最佳路径。

8. OSPF guarantees loop-free routing. Distance vector protocols may cause routing loops .

OSPF保证无迴圈路由，距离向量协定可能引起路由迴圈。

9. The OSPF global configuration has %1 global parameter blocks and %2 area parameter blocks. This is an invalid configuration.

OSPF全局配置有%1全局参数块及%2区域参数块。这是一个无效的配置。

10. Open Shortest Path First(OSPF) protocol

OSPF协议

11. The Method about Test Case Generation of Routing Table Calculation in OSPF Protocol

OSPF协议中路由表计算的测试例生成方法

12. A Network Topology Model and its Arithmetic in OSPF Protocol Testing

OSPF协议测试中网络拓扑建模及其算法研究

13. OSPF extensions

OSPF扩展

14. OSPF gathers information from neighbor routers about the link status of each OSPF router.

OSPF收集从邻近路由器来的关于每个OSPF路由器的链结状况的资讯。

15. OSPF is a link-state routing protocol developed by the Internet Engineering Task Force (IETF) in 1988. OSPF was written to address the needs of large, scalable internetworks that RIP could not.

OSPF是一个在1988年由网际网路工程任务编组(IETF)发展出的链结状态路由协定，OSPF被提出是为了处理RIP无法满足大型的、可扩张的互连网路之需求。

16. OSPF is a nonproprietary link-state routing protocol.

OSPF是一非专属的链路状态路由协定。

17. OSPF stub or totally stubby Areas can only exist if adjacent to which of the following?

OSPF末节域或完全末节域通过下面选项的拿一个连接，才会存在。

18. Refer to the exhibit. Why are two OSPF designated routers identified on Core_Router?

OSPF的进程号只在本地有效。在一台路由器上需要为每个进程维护各自的OSPF数据库。

19. OSPF algorithm

OSPF算法

20. OSPF routing ensures loop-free paths to every network in the domain.

OSPF路由保证网域内的每一个网路为无迴圈路径。

21. OSPF Routing Protocol

OSPF路由协议

22. QoS Routing Extensions Based on OSPF

OSPF路由协议上的服务质量扩展

23. OSPF Routing Protocol Security Analysis and Attacks Detection

OSPF路由协议安全性分析及其攻击检测

24. What is OSPF's default administrative distance (AD)?

OSPF路由协议缺省管理距离是多少?

25. Research on Operation Mechanism and Implementation Algorithm of OSPF Routing Protocol

OSPF路由协议运行机制及算法的研究

26. OSPF routers determine which routers to become adjacent to based on the type of network they are connected to.

OSPF路由器依据它们所连接的网路类型来决定哪些路由器是相邻的。

27. An OSPF router advertises its own link-states and passes on received link-states.

OSPF路由器通告它自己的链路状态和传递收到的链路状态。

28. OSPF ROUTING TECHNOLOGY AND ITS APPLICATION IN IP BROADBAND NETWORK

OSPF路由技术及其在IP宽带网上的应用

29. OSPF is appropriate for large, scalable internetworks, and the best path is determined by the speed of the link.

OSPF适合于大的、可扩充的互连网路，且最佳路径是依据链路的速度。

30. OSPF elects a designated router (DR) to be the focal point of all link-state updates and link-state advertisements.

OSPF选举指定路由器(DR)来当作所有链路状态更新和链路状态广播的中心。

31. Q: When routes are redistributed between OSPF processes, are all SPF metrics preserved or is the default metric value used?

Q ：当路线的重新分配之间的OSPF进程，都是SPF级数据保存或是默认度量的价值使用呢？

32. Come back next week for the areas and LSA discussion, which will consolidate your understanding of the whole OSPF concept, and enable you to understand good OSPF design.

下一篇网络基础知识中我们将讨论区域和LSA,从而巩固你对整个OSPF概念的理解,并且了解什么才是高质量的OSPF设计。

33. The next page will describe the OSPF routing process.

下一页将描述OSPF路由程序。

34. The next page will teach students how to configure OSPF timers.

下一页将教学生如何组态OSPF计时器。

35. The next page will compare OSPF to distance vector protocols.

下一页将比较OSPF和距离向量协定。

36. the state of the OSPF DR/BDR (designated router / backup designated router) election process?

下列哪个特权指令可以显示OSPF中的DR/BDR选举进程？

37. To ensure OSPF stability there should be an active interface for the OSPF process at all times.

为了确保OSPF稳定性，OSPF程序在任何时间应有一个活动介面。

38. The Interactive Media Activity will help students identify the fields in an OSPF packet header.

互动媒体活动中将帮助学生确认OSPF封包标头的栏位。

39. The Interactive Media Activity will teach students about OSPF terminology.

互动媒体活动中将教学生关于OSPF的术语。

40. Routes learned or redistributed from other routing protocols, such as RIP, OSPF, and IGRP, are external.

从其他路由协定所学到的路径或者重新分送来的路径，例如RIP、OSPF和IGRP，都是外部路径。

41. Buy OSPF and IS-IS from Amazon USA

从美国亚马逊购买

42. Buy OSPF and IS-IS from Amazon UK

从英国亚马逊购买

43. Cost Adaptive OSPF

代价自适应OSPF

44. Tradition-al protocols include OSPF,IS-IS and P-NNI. In this pa per,the model of optical layer routing protocol,the ex pansion of tradition al routing protocols and their spe-cific de sign are discussed.

传统的路由协议包括了OSPF,IS-IS和P-NNI协议,这里则讨论了光层路由协议的模型,对传统路由协议的扩展,以及路由协议的具体设计三个方面。

45. Unlike RIP OSPF uses IP directly, OSPF packets being identified by a special value in the IP datagram protocol field.

传输层协议提供计算机之间的通信会话，并确保数据在计算机之间可靠地传输。

46. It is considered good practice to use loopback interfaces for all routers running OSPF.

使用迴路介面给所有执行OSPF的路由器被视为好的实务。

47. What does OSPF use to calculate the cost to a destination network? OSPF

使用什么来计算到目的网络的

48. For example, when using a routing protocol like Open Shortest Path First(OSPF), an upgrade or topology change on the internetwork causes a shortest path first(SPF) calculation.

例如，使用一个像开放最短路径优先（OSPF）这样的路由协议时，网络中的一个升级或拓扑改变会引起最短路径路径优先（SPF）计算。

49. For example, if someone want to try Proactive Defense with other firewall, he/she will able to install OSPD only, without OSPF part.

例如，有的人想搭配其它防火墙安装主动防御，他可以选择只安装OSPD，不包括OSPF部分。

50. With simple authentication, the password is sent as plain text. This means that it can be easily decoded if a packet sniffer captures an OSPF packet.

凭著简单的认证，密码以明文传送。此意味假如封包栏截者撷取一个OSPF封包，它可能容易被解码。

51. Reducing Routing Table Computation Cost in OSPF

利用区域划分算法降低OSPF路由表计算开销

52. Research and Implementation of the Multi-mechanism Model of Disposing Actively the Configuration Parameter for OSPF

动态处理OSPF配置参数的多机制模型研究与实现

53. A Supporting Algorithm of the Dynamic Configuration for OSPF Physical Interface

动态配置OSPF物理接口的支撑算法

54. Also, if multicast is available, OSPF uses it for its normal multicasts.

另外，如果是可用的组播， OSPF的用途，供其正常的多址。

55. All routers in the OSPF area will learn a default route provided that the interface of the border router to the default gateway is active.

只要边界路由器到预设闸道器的介面还有作用，在OSPF区域的所有路由器将学习预设路径。

56. Mar 1 00:02:11.979: OSPF: Rcv pkt from 199.99.1.1, Serial1/0 : Mismatch Authentication type. Input packet specified type 1, we use type 0

可以发现一条错误提示：验证类型不匹配。缺省情况下，无验证为类型0，明文验证为1，记住！

57. Show ip ospf database external

命令的输出显示在路由器的外部

58. What is the maximum number of hops OSPF allows before it deems a network unreachable?

在OSPF协议中，最大多少跳数代表网络不可达?

59. After initial OSPF convergence, maintaining a converged state is faster because only the changes in the network are flooded to other routers in an area.

在初始OSPF收歛后，维护收歛状况是较快的，因为只有网路的改变被氾送到在区域内的其他的路由器。

60. Every router in an OSPF area is capable of representing the entire network topology.

在单区域中的每个路由器都能描述整个网络拓扑。

61. On multi-access networks the DR and BDR maintain adjacencies with all other OSPF routers on the network.

在多重存取网路，DR和BDR与网路上的所有其他OSPF路由器保持邻接。

62. A justification that OSPF network performance will be improved is needed prior to changing the timers.

在改变计时器之前，必须先确认OSPF网路效能将获得改进。

63. While comparing the tables associated with EIGRP and OSPF,you notice some similarities. Which EIGRP table is similar to OSPF's Link State Adjacency table?

在比较EIGRP和OSPF相关数据表的时候，你发现了一些相同点，那么EIGRP的哪个数据表和OSPF的链路状态毗邻表相似?

64. Have R2 originate a default route into the OSPF domain.

在路由器2创立一个进入OSPF的默认路由。

65. After the election process, the DR and BDR retain their roles even if routers are added to the network with higher OSPF priority values.

在选择程序之后，即使有更高的OSPF优先权值的路由器被加入到这网路，DR和BDR仍维持它们的角色。

66. An Algorithm of Dynamic Configuration for OSPF Physical Interface Based on TMS Architectural Structure

基于TMS结构的OSPF物理接口动态配置算法

67. Design and Implementation of OSPF Routing Table Based on Architecture of TMS

基于TMS结构的OSPF路由表设计与实现

68. An OSPF Algorithm Based on Quadheap PRI Queue

基于四叉堆优先级队列的OSPF算法

69. BDR receives all routing updates from OSPF adjacent routers, but doesn't flood LSA updates.

备份指定路由器：含义明显！上面的接替者。

70. The Routing Design and Implement of the Multi OSPF Area Campus Network

多区域OSPF校园网路由设计与实现

71. Like OSPF, EIGRP relies on different types of packets to maintain its tables and establish relationships with neighbor routers. This page will describe these packet types.

如同OSPF一样，EIGRP倚赖不同类型的封包来维护它的表格，并且建立与邻接路由器的关系，这页将描述这些封包的类型。

72. Protocol used by OSPF systems for establishing and maintaining neighbor relationships.

它是一个为了建立和维持邻居关系的被OSPF系统使用的协议。

73. Routers that implement distance vector protocols need less memory and less powerful processors than those that implement OSPF.

实作距离向量协定的路由器，比实作OSPF的路由器，需要较少记忆体和较不强的处理器。

74. The Lab Activities will show students how to modify the OSPF cost metric of an interface.

实验活动将展示给学生如何修改介面的OSPF成本权值。

75. Open Shortest Path First(OSPF)

开放式最短路径优先（OSPF）

76. OSPF( open shortest path first)

开放最短路径优先

77. Open Shortest Path First (OSPF) protocol

开放最短路径优先协议

78. open shortest route first(OSPF)

开放最短路径优先（OSPF）

79. When a loopback interface is configured, OSPF uses this address as the router ID, regardless of the value.

当迴路介面被组态时，无论其值，OSPF使用此位址当作路由器ID。

80. When OSPF priorities are the same, the OSPF election for DR is decided on the router ID.

当OSPF优先权相同，OSPF选举DR是依路由器ID来作决定。