Network Working Group                                         G. Trotter
Request for Comments: 3222                          Agilent Technologies
Category: Informational                                    December 2001
        
Network Working Group                                         G. Trotter
Request for Comments: 3222                          Agilent Technologies
Category: Informational                                    December 2001
        

Terminology for Forwarding Information Base (FIB) based Router Performance

基于转发信息库(FIB)的路由器性能术语

Status of this Memo

本备忘录的状况

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

本备忘录为互联网社区提供信息。它没有规定任何类型的互联网标准。本备忘录的分发不受限制。

Copyright Notice

版权公告

Copyright (C) The Internet Society (2001). All Rights Reserved.

版权所有(C)互联网协会(2001年)。版权所有。

Abstract

摘要

This document describes the terms to be used in a methodology that determines the IP packet forwarding performance of IP routers as a function of the forwarding information base installed within a router. The forwarding performance of an IP router may be dependent upon or may be linked to the composition and size of the forwarding information base installed within a router.

本文档描述了在确定IP路由器的IP数据包转发性能的方法中使用的术语,该性能取决于路由器内安装的转发信息库。IP路由器的转发性能可取决于或可链接到安装在路由器内的转发信息库的组成和大小。

Table of Contents

目录

   1. Introduction.................................................... 2
   2. Overview........................................................ 3
   3. Existing Definitions............................................ 3
   4. Definition Format............................................... 3
   5. Definitions - parameters........................................ 4
   5.1 Network Prefix................................................. 4
   5.2 Network Prefix Length.......................................... 4
   5.3 Forwarding Information Base (FIB).............................. 5
   5.4 Forwarding Information Base Entry.............................. 6
   5.5 Forwarding Information Base Size............................... 6
   5.6 Longest Length Prefix Match Algorithm.......................... 7
   5.7 Forwarding Information Base Prefix Distribution................ 7
   5.8 Per-Interface or Per-Card Forwarding Information Base.......... 8
   5.9 Per-Interface Forwarding Information Base Cache................ 9
   5.10 Route Aggregation............................................ 10
   6. Definitions - metrics.......................................... 10
   6.1 Maximum Forwarding Information Base Size...................... 11
   6.2 Forwarding Information Base Learning Time..................... 11
   6.3 Forwarding Information Base-dependent Throughput.............. 12
   6.4 Forwarding Information Base-dependent Latency................. 12
   6.5 Forwarding Information Base-dependent Frame Loss Rate......... 13
   7. Security Considerations........................................ 13
   8. References..................................................... 13
   9. Author's Address............................................... 14
   10. Full Copyright Statement...................................... 15
        
   1. Introduction.................................................... 2
   2. Overview........................................................ 3
   3. Existing Definitions............................................ 3
   4. Definition Format............................................... 3
   5. Definitions - parameters........................................ 4
   5.1 Network Prefix................................................. 4
   5.2 Network Prefix Length.......................................... 4
   5.3 Forwarding Information Base (FIB).............................. 5
   5.4 Forwarding Information Base Entry.............................. 6
   5.5 Forwarding Information Base Size............................... 6
   5.6 Longest Length Prefix Match Algorithm.......................... 7
   5.7 Forwarding Information Base Prefix Distribution................ 7
   5.8 Per-Interface or Per-Card Forwarding Information Base.......... 8
   5.9 Per-Interface Forwarding Information Base Cache................ 9
   5.10 Route Aggregation............................................ 10
   6. Definitions - metrics.......................................... 10
   6.1 Maximum Forwarding Information Base Size...................... 11
   6.2 Forwarding Information Base Learning Time..................... 11
   6.3 Forwarding Information Base-dependent Throughput.............. 12
   6.4 Forwarding Information Base-dependent Latency................. 12
   6.5 Forwarding Information Base-dependent Frame Loss Rate......... 13
   7. Security Considerations........................................ 13
   8. References..................................................... 13
   9. Author's Address............................................... 14
   10. Full Copyright Statement...................................... 15
        
1. Introduction
1. 介绍

This document defines terms that are to be used in a methodology that determines the IP packet forwarding performance of IP routers as a function of the forwarding information base installed within the router.

本文件定义了在确定IP路由器的IP包转发性能的方法中使用的术语,该性能取决于路由器内安装的转发信息库。

The objective of this methodology is to evaluate the performance levels of IP routers as forwarding information bases continue to grow in size and complexity of structure.

此方法的目标是评估IP路由器的性能水平,因为转发信息库的大小和结构复杂性不断增长。

This methodology utilizes the packet forwarding performance measurements described in [2]; reference will also be made to the associated terminology document [3] for these terms.

该方法利用了[2]中描述的分组转发性能度量;这些术语也将参考相关术语文件[3]。

2. Overview
2. 概述

In order to measure the forwarding information base-based router performance, different forwarding information bases (5.3) are installed in the router. The two key elements describing the FIB are the FIB size (5.5) and FIB prefix distribution (5.7). The forwarding performance of a router may be dependent upon these two primary factors, particularly if FIB prefix distributions tend towards longer network prefixes (5.1). The FIB-dependent throughput, latency and frame loss rate (6.3, 6.4, 6.5), measured with fully meshed traffic flows [2], will reflect the change in performance of the router. Tests may need to be performed up to the maximum FIB size (6.1).

为了测量基于转发信息库的路由器性能,路由器中安装了不同的转发信息库(5.3)。描述FIB的两个关键元素是FIB大小(5.5)和FIB前缀分布(5.7)。路由器的转发性能可能取决于这两个主要因素,特别是当FIB前缀分布趋向于更长的网络前缀时(5.1)。使用完全网状的流量[2]测量的FIB相关吞吐量、延迟和帧丢失率(6.3、6.4、6.5)将反映路由器性能的变化。测试可能需要进行到最大FIB尺寸(6.1)。

When configuring the router for these measurements, the routes need to be manually entered into the router, or advertised via a routing protocol. It may take some period of time (the FIB learning time (6.2)) before the router learns all the routes.

当为这些测量配置路由器时,需要手动将路由输入路由器,或通过路由协议公布路由。路由器学习所有路由之前可能需要一段时间(FIB学习时间(6.2))。

When routes are advertised into the router, the routes should be advertised in such a way so that route aggregation (5.10) does not occur. Also, the effect of a per-interface FIB cache (5.9) needs to be taken into account.

当路由被播发到路由器中时,应该以这样的方式播发路由,以便不发生路由聚合(5.10)。此外,还需要考虑每个接口FIB缓存(5.9)的影响。

3. Existing Definitions
3. 现有定义

[3] should be consulted before attempting to make use of this document. [2] contains discussions of a number of terms relevant to the benchmarking of network interconnect devices and should also be consulted.

[3] 在尝试使用本文件之前,应咨询。[2] 包含与网络互连设备基准测试相关的许多术语的讨论,也应参考这些术语。

4. Definition Format
4. 定义格式

The definition format is the equivalent to that defined in [3], and is repeated here for convenience:

定义格式与[3]中定义的格式相同,为方便起见,在此重复:

X.x Term to be defined. (e.g., Latency)

X.X待定义的术语。(例如,延迟)

Definition: The specific definition for the term.

定义:该术语的具体定义。

Discussion: A brief discussion about the term, it's application and any restrictions on measurement procedures.

讨论:简要讨论该术语、其应用以及对测量程序的任何限制。

Measurement units: The units used to report measurements of this term, if applicable.

测量单位:用于报告本术语测量值的单位(如适用)。

Issues: List of issues or conditions that effect this term.

问题:影响本术语的问题或条件列表。

See Also: List of other terms that are relevant to the discussion of this term.

另见:与本术语讨论相关的其他术语列表。

5. Definitions - parameters
5. 定义-参数

This section defines parameters that would dictate the execution of methodology to determine the FIB based forwarding performance of a router.

本节定义了用于确定路由器基于FIB的转发性能的方法执行的参数。

5.1 Network Prefix
5.1 网络前缀

Definition: "A network prefix is . . . a contiguous set of bits at the more significant end of the address that defines a set of systems; host numbers select among those systems."

定义:“网络前缀是……在定义一组系统的地址的更有效端的一组连续位;主机号在这些系统中进行选择。”

(This definition is taken directly from section 2.2.5.2, "Classless Inter Domain Routing (CIDR)", in [4].)

(该定义直接取自[4]第2.2.5.2节“无类域间路由(CIDR)”。)

Discussion: In the CIDR context, the network prefix is the network component of an IP address. A common alternative to using a bitwise mask to communicate this component is the use of "slash (/) notation." Slash notation binds the notion of network prefix length (see 5.2) in bits to an IP address. E.g., 141.184.128.0/17 indicates the network component of this IPv4 address is 17 bits wide.

讨论:在CIDR上下文中,网络前缀是IP地址的网络组件。使用位掩码与该组件通信的一个常见替代方法是使用“斜杠(/)表示法”。斜杠表示法将网络前缀长度(见5.2)的概念以位绑定到IP地址。例如,141.184.128.0/17表示此IPv4地址的网络组件的宽度为17位。

   Measurement units:
      <n/a>
        
   Measurement units:
      <n/a>
        

Issues:

问题:

See Also: Network Prefix Length (5.2)

另请参见:网络前缀长度(5.2)

5.2 Network Prefix Length
5.2 网络前缀长度

Definition: The number of bits used to define the network prefix. Network prefixes, using CIDR terminology, are typically referred to as 15.35.128.0 /17, indicating that the network prefix is 17 bits long.

定义:用于定义网络前缀的位数。使用CIDR术语的网络前缀通常称为15.35.128.0/17,表示网络前缀的长度为17位。

Discussion: When referring to groups of addresses, the network prefix length is often used as a means of describing groups of addresses as an equivalence class. For example, 100 /16 addresses refers to 100 addresses whose network prefix length is 16 bits.

讨论:当提及地址组时,网络前缀长度通常用作将地址组描述为等价类的一种方法。例如,100/16地址指网络前缀长度为16位的100个地址。

Measurement units: bits

测量单位:位

Issues:

问题:

See Also: network prefix (5.1) forwarding information base prefix distribution (5.7)

另请参见:网络前缀(5.1)转发信息库前缀分发(5.7)

5.3 Forwarding Information Base (FIB)
5.3 转发信息库(FIB)

Definition: As according to the definition in Appendix B of [4]:

定义:根据[4]附录B中的定义:

"The table containing the information necessary to forward IP Datagrams, in this document, is called the Forwarding Information Base. At minimum, this contains the interface identifier and next hop information for each reachable destination network prefix."

在本文档中,包含转发IP数据报所需信息的表称为转发信息库。该表至少包含每个可到达目标网络前缀的接口标识符和下一跳信息

Discussion: The forwarding information base describes a database indexing network prefixes versus router port identifiers.

讨论:转发信息库描述了数据库索引网络前缀与路由器端口标识符。

A forwarding information base consists of [FIB size (5.5)] FIB entries (5.4).

转发信息库由[FIB大小(5.5)]FIB条目(5.4)组成。

The forwarding information base is distinct from the "routing table" (or, the Routing Information Base), which holds all routing information received from routing peers.

转发信息库与“路由表”(或路由信息库)不同,后者保存从路由对等方接收的所有路由信息。

The forwarding information base contains unique paths only (i.e. does not contain secondary paths).

转发信息库仅包含唯一路径(即不包含辅助路径)。

Measurement units: <none>

测量单位:<none>

Issues:

问题:

See Also: forwarding information base entry (5.4) forwarding information base size (5.5) forwarding information base prefix distribution (5.7) maximum forwarding information base size (6.1)

另请参见:转发信息库条目(5.4)转发信息库大小(5.5)转发信息库前缀分布(5.7)最大转发信息库大小(6.1)

5.4 Forwarding Information Base Entry
5.4 转发信息库条目

Definition: A single entry within a forwarding information base. This entry consists of the minimum amount of information necessary to make a forwarding decision on a particular packet. The typical components within a forwarding information base entry are a network prefix, a router port identifier and next hop information. This is an entry that the router can and does use to forward packets.

定义:转发信息库中的单个条目。此条目包含对特定数据包做出转发决策所需的最小信息量。转发信息库条目中的典型组件是网络前缀、路由器端口标识符和下一跳信息。这是路由器可以并且确实用于转发数据包的条目。

Discussion: See (5.3).

讨论:见(5.3)。

   Measurement units:
      <n/a>
        
   Measurement units:
      <n/a>
        

Issues:

问题:

See Also: forwarding information base (5.3) forwarding information base size (5.5) forwarding information base prefix distribution (5.7) maximum forwarding information base size (6.1)

另请参见:转发信息库(5.3)转发信息库大小(5.5)转发信息库前缀分布(5.7)最大转发信息库大小(6.1)

5.5 Forwarding Information Base Size
5.5 转发信息基大小

Definition: Refers to the number of forwarding information base entries within a forwarding information base.

定义:转发信息库中的转发信息库条目数。

Discussion: The number of entries within a forwarding information base is one of the key elements that may influence the forwarding performance of a router. Generally, the more entries within the forwarding information base, the longer it could take to find the longest matching network prefix within the forwarding information base.

讨论:转发信息库中的条目数是可能影响路由器转发性能的关键因素之一。通常,转发信息库中的条目越多,在转发信息库中查找最长匹配网络前缀所需的时间就越长。

Measurement units: Number of routes

测量单位:路线数

Issues:

问题:

See Also: forwarding information base (5.3) forwarding information base entry (5.4) forwarding information base prefix distribution (5.7) maximum forwarding information base size (6.1)

另请参见:转发信息库(5.3)转发信息库条目(5.4)转发信息库前缀分布(5.7)最大转发信息库大小(6.1)

5.6 Longest Length Prefix Match Algorithm
5.6 最长长度前缀匹配算法

Definition: An algorithm that a router uses to quickly match destination addresses within received IP packets to exit interfaces on the router.

定义:路由器用于快速匹配接收到的IP数据包中的目标地址以退出路由器上的接口的算法。

Discussion:

讨论:

Measurement Units: <none>

测量单位:<none>

Issues:

问题:

See Also:

另见:

5.7 Forwarding Information Base Prefix Distribution
5.7 转发信息库前缀分配

Definition: The distribution of network prefix lengths within the forwarding information base.

定义:转发信息库中网络前缀长度的分布。

Discussion: Network prefixes within the forwarding information base could be all of a single network prefix length, but, more realistically, the network prefix lengths will be distributed across some range.

讨论:转发信息库中的网络前缀可以是单个网络前缀长度,但更现实的是,网络前缀长度将分布在某个范围内。

Individual performance measurements will be made against FIBs populated with the same network prefix length, as well as against FIBs with some distribution of network prefix lengths.

将针对具有相同网络前缀长度的FIB以及具有一定网络前缀长度分布的FIB进行单独的性能测量。

The distribution of network prefix lengths may have an impact on the forwarding performance of a router. The longer the network prefix length, the longer it will take for a router to perform the longest length prefix match algorithm, and potentially the lower the performance of the router.

网络前缀长度的分布可能会影响路由器的转发性能。网络前缀长度越长,路由器执行最长长度前缀匹配算法所需的时间就越长,并且路由器的性能可能越低。

Measurement units: The forwarding information base prefix distribution is expressed by a list of network prefix lengths and the percentage of entries within the forwarding information base with a particular network prefix length. For example, a forwarding information base prefix distribution is represented as:

度量单位:转发信息库前缀分布由网络前缀长度列表和转发信息库中具有特定网络前缀长度的条目百分比表示。例如,转发信息基前缀分布表示为:

         {[/16, 100], [/20, 360], [/24, 540]}
        
         {[/16, 100], [/20, 360], [/24, 540]}
        

This indicates that 100 of the entries within the forwarding information base have a 16 bit network prefix length, 360 have a 20 bit network prefix length, and 540 have a 24 bit network prefix length.

这表示转发信息库中的100个条目具有16位网络前缀长度,360具有20位网络前缀长度,540具有24位网络前缀长度。

Issues:

问题:

See Also: forwarding information base (5.3) forwarding information base entry (5.4) forwarding information base size (5.5) maximum forwarding information base size (6.1)

另请参见:转发信息库(5.3)转发信息库条目(5.4)转发信息库大小(5.5)最大转发信息库大小(6.1)

5.8 Per-Interface or Per-Card Forwarding Information Base
5.8 每个接口或每个卡转发信息库

Definition: A complete copy of the forwarding information base, installed on a router's card or individual physical interface to speed the destination address to network prefix lookup process.

定义:转发信息库的完整副本,安装在路由器的卡或单个物理接口上,以加快目标地址到网络前缀的查找过程。

Discussion: Router manufacturers have developed many optimizations for routers, of which one optimization is to copy the forwarding information base to every interface or interface card on the router. By doing this, destination address / network prefix lookups can be performed on the interface or card, unloading a router's CPU.

讨论:路由器制造商已经为路由器开发了许多优化,其中一个优化是将转发信息库复制到路由器上的每个接口或接口卡。通过这样做,可以在接口或卡上执行目标地址/网络前缀查找,从而卸载路由器的CPU。

   Measurement units:
      <n/a>
        
   Measurement units:
      <n/a>
        

Issues:

问题:

See Also: forwarding information base (5.3) per-interface forwarding information base cache (5.9)

另请参见:每个接口转发信息库缓存(5.9)的转发信息库(5.3)

5.9 Per-Interface Forwarding Information Base Cache
5.9 每个接口转发信息基缓存

Definition: A subset of a forwarding information base, installed on a router's interface card to speed the destination address / network prefix lookup process.

定义:转发信息库的子集,安装在路由器的接口卡上,以加快目标地址/网络前缀查找过程。

Discussion: Prior to installing a complete copy of the forwarding information base on each interface of a router, a popular technique for speeding destination address lookups is to install a cache of frequently used routes on a router's interface.

讨论:在路由器的每个接口上安装转发信息库的完整副本之前,加速目标地址查找的一种流行技术是在路由器接口上安装一个常用路由缓存。

The most frequently used routes are placed in the forwarding information base cache. IP packets whose destination address does not match a network prefix within the per-interface forwarding information base cache are forwarded to a router's central processor for lookup in the complete forwarding information base.

最常用的路由放置在转发信息库缓存中。目标地址与每个接口转发信息库缓存中的网络前缀不匹配的IP数据包被转发到路由器的中央处理器,以便在完整的转发信息库中查找。

The implication for benchmarking the performance of a router as a function of the forwarding information base is significant. IP packets whose destination address matches an entry within the per-interface forwarding information base cache could be forwarded more quickly than packets whose destination address does not match an entry within the per-interface forwarding information base cache.

将路由器的性能作为转发信息库的一个功能进行基准测试具有重要意义。目标地址与每接口转发信息基缓存中的条目匹配的IP数据包可以比目标地址与每接口转发信息基缓存中的条目不匹配的数据包更快地转发。

To create useful benchmarks, the role of a per-interface forwarding cache needs to be considered. The nature of benchmarking tests to measure the impact of the forwarding performance of a router requires that the destination addresses within IP packets transmitted into the router be distributed amongst the total set of network prefixes advertised into the router. This negates the role of a per-interface forwarding information base cache, but serves to stress the forwarding information base-based packet forwarding performance of the router.

要创建有用的基准,需要考虑每个接口转发缓存的作用。测量路由器转发性能影响的基准测试的性质要求传输到路由器的IP数据包中的目标地址分布在发送到路由器的网络前缀的整个集合中。这否定了每个接口转发信息库缓存的作用,但有助于强调路由器基于转发信息库的包转发性能。

   Measurement units:
      <n/a>
        
   Measurement units:
      <n/a>
        

Issues:

问题:

See Also: forwarding information base (5.3) per-interface forwarding information base (5.8)

另请参见:每个接口转发信息库(5.8)的转发信息库(5.3)

5.10 Route Aggregation
5.10 路由聚合

Definition: The ability of a router to collapse many forwarding information base entries into a single entry.

定义:路由器将多个转发信息基条目折叠为单个条目的能力。

Discussion: A router may aggregate routes in a forwarding information base into a single entry to conserve space.

讨论:路由器可以将转发信息库中的路由聚合到单个条目中以节省空间。

When advertising routes into a router to perform benchmarking tests as a function of the forwarding information base installed within the router, it is necessary to ensure that a router does not aggregate routes.

当将路由播发到路由器以执行基准测试(作为路由器内安装的转发信息库的功能)时,有必要确保路由器不会聚合路由。

Thus, when routes are advertised to the router or installed statically, care must be taken to ensure that the router does not aggregate routes.

因此,当路由向路由器播发或静态安装时,必须注意确保路由器不会聚合路由。

For example, if advertising a set of /24 network prefixes into a particular port on the router, 256 consecutive /24 routes, sharing a common leading 16 bits, should not be advertised on a single port. If this is done, then the router will install a single entry within the forwarding information base indicating that all networks matching a particular /16 network prefix are accessible through one particular entry.

例如,如果向路由器上的特定端口播发一组/24网络前缀,则共享公共前导16位的256个连续/24路由不应在单个端口上播发。如果这样做,那么路由器将在转发信息库中安装一个条目,指示所有匹配特定/16网络前缀的网络都可以通过一个特定条目访问。

Route aggregation on a router can be turned off, but routes should still be advertised into the router in such a manner as to avoid route aggregation.

路由器上的路由聚合可以关闭,但路由仍应以避免路由聚合的方式播发到路由器中。

Measurement units: <none>

测量单位:<none>

Issues:

问题:

See Also:

另见:

6. Definitions - metrics
6. 定义-指标

This section defines the metrics, or results, that would characterized the FIB based forwarding performance of a router.

本节定义了表征路由器基于FIB的转发性能的指标或结果。

6.1 Maximum Forwarding Information Base Size
6.1 最大转发信息基大小

Definition: The maximum number of forwarding information base entries that can be supported within the forwarding information base. The Maximum Forwarding Information Base Size is the size over which all entries can and are used to forward traffic.

定义:转发信息库中可支持的最大转发信息库条目数。最大转发信息基大小是所有条目可以和用于转发流量的大小。

Discussion: It is useful to know the maximum forwarding information base size for a router as it will be an indicator of the ability of the router to function within the given application space, and whether the router will be able to handle projected network growth.

讨论:了解路由器的最大转发信息库大小很有用,因为它将是路由器在给定应用程序空间内运行的能力的指标,以及路由器是否能够处理预计的网络增长。

As a benchmarking value, it is necessary to discover this value so that performance measurements can be made up to the maximum possible forwarding information base size.

作为基准值,有必要发现该值,以便性能度量可以达到最大可能的转发信息库大小。

Measurement units: Number of routes

测量单位:路线数

Issues: Could this value vary with the forwarding information base prefix distribution?

问题:此值是否会随转发信息库前缀分布而变化?

See Also: forwarding information base (5.3) forwarding information base entry (5.4) forwarding information base size (5.5) forwarding information base prefix distribution (5.7)

另请参见:转发信息库(5.3)转发信息库条目(5.4)转发信息库大小(5.5)转发信息库前缀分布(5.7)

6.2 Forwarding Information Base Learning Time
6.2 转发信息库学习时间

Definition: The time a router takes to process received routing messages, and to construct (and, possibly to distribute amongst the interface cards in the router) the forwarding information base. This is measured from the time at which a router is presented with the first routing message, through to when it can forward packets using any entry in the forwarding information base.

定义:路由器处理接收到的路由消息和构建(以及可能在路由器中的接口卡之间分发)转发信息库所需的时间。这是从路由器收到第一条路由消息的时间开始测量的,直到路由器可以使用转发信息库中的任何条目转发数据包。

Discussion: It takes time for a router to construct its forwarding information base. A router needs to process received routing packets, build the routing information database, select the best paths, build the forwarding information base and then possibly distribute the

讨论:路由器构建其转发信息库需要时间。路由器需要处理接收到的路由数据包,建立路由信息数据库,选择最佳路径,建立转发信息库,然后可能地分发路由信息

forwarding information base or a subset thereof to the interface cards. This entire process can take several minutes with very large forwarding information bases.

将信息库或其子集转发到接口卡。对于非常大的转发信息库,整个过程可能需要几分钟。

When performing benchmarking tests that take the forwarding information base into account, time must be allocated for the router to process the routing information and to install the complete forwarding information base within itself, before performance measurements are made.

在执行考虑转发信息库的基准测试时,在进行性能测量之前,必须为路由器分配时间来处理路由信息并在其内部安装完整的转发信息库。

Measurement units: Prefixes per second.

测量单位:每秒前缀。

Issues:

问题:

See Also: forwarding information base (5.3)

另见:转发信息库(5.3)

6.3 Forwarding Information Base-dependent Throughput
6.3 转发信息基相关吞吐量

Definition: Throughput, as defined in [3], used in a context where the forwarding information base influences the throughput.

定义:吞吐量,如[3]中所定义,用于转发信息库影响吞吐量的上下文中。

Discussion: This definition for FIB-dependent throughput is added to distinguish the context of this measurement from that defined in [3].

讨论:增加FIB相关吞吐量的定义是为了区分该测量的上下文与[3]中定义的上下文。

Measurement units: See [3].

计量单位:见[3]。

Issues:

问题:

See Also: forwarding information base-dependent latency (6.4) forwarding information base-dependent frame loss rate (6.5)

See Also: forwarding information base-dependent latency (6.4) forwarding information base-dependent frame loss rate (6.5)translate error, please retry

6.4 Forwarding Information Base-dependent Latency
6.4 转发信息基相关延迟

Definition: Latency, as defined in [3], used in a context where the forwarding information base influences the throughput.

定义:延迟,如[3]中所定义,用于转发信息库影响吞吐量的上下文中。

Discussion: This definition for FIB-dependent latency is added to distinguish the context of this measurement from that defined in [3].

讨论:添加FIB相关延迟的定义是为了区分该测量的上下文与[3]中定义的上下文。

Measurement units: See [3].

计量单位:见[3]。

Issues:

问题:

See Also: forwarding information base-dependent throughput (6.3) forwarding information base-dependent frame loss rate (6.5)

另请参见:转发信息库相关吞吐量(6.3)转发信息库相关帧丢失率(6.5)

6.5 Forwarding Information Base-dependent Frame Loss Rate
6.5 转发信息基相关帧丢失率

Definition: Frame Loss Rate, as defined in [3], used in a context where the forwarding information base influences the throughput.

定义:[3]中定义的帧丢失率,用于转发信息基础影响吞吐量的上下文中。

Discussion: This definition for FIB-dependent frame loss rate is added to distinguish the context of this measurement from that defined in [3].

讨论:增加FIB相关帧丢失率的定义是为了区分该测量的上下文与[3]中定义的上下文。

Measurement units: See [3].

计量单位:见[3]。

Issues:

问题:

See Also: forwarding information base-dependent throughput (6.3) forwarding information base-dependent latency (6.4)

另请参见:转发信息库相关吞吐量(6.3)转发信息库相关延迟(6.4)

7. Security Considerations
7. 安全考虑

As this document is solely for the purpose of providing metric methodology and describes neither a protocol nor a protocols implementation, there are no security considerations associated with this document.

由于本文档仅用于提供度量方法,并且既不描述协议也不描述协议实现,因此本文档没有相关的安全注意事项。

8. References
8. 工具书类

[1] Bradner, S., "The Internet Standards Process -- Revision 3", BCP 9, RFC 2026, October 1996.

[1] Bradner,S.,“互联网标准过程——第3版”,BCP 9,RFC 2026,1996年10月。

[2] Bradner, S. and J. McQuaid, "Benchmarking Methodology for Network Interconnect Devices", RFC 2544, March 1999.

[2] Bradner,S.和J.McQuaid,“网络互连设备的基准测试方法”,RFC 25441999年3月。

[3] Bradner, S., "Benchmarking Terminology for Network Interconnection Devices", RFC 1242, July 1991.

[3] Bradner, S., "Benchmarking Terminology for Network Interconnection Devices", RFC 1242, July 1991.translate error, please retry

[4] Baker, F., "Requirements for IP Version 4 Routers", RFC 1812, June 1995.

[4] Baker,F.,“IP版本4路由器的要求”,RFC 1812,1995年6月。

9. Author's Address
9. 作者地址

Guy Trotter Agilent Technologies (Canada) Inc. #2500 4710 Kingsway Burnaby, British Columbia Canada V5H 4M2

盖伊·特罗特安捷伦科技(加拿大)有限公司#2500 4710加拿大不列颠哥伦比亚省金斯威伯纳比V5H 4M2

   Phone: +1 604 454 3516
   EMail: Guy_Trotter@agilent.com
        
   Phone: +1 604 454 3516
   EMail: Guy_Trotter@agilent.com
        
10. Full Copyright Statement
10. 完整版权声明

Copyright (C) The Internet Society (2001). All Rights Reserved.

版权所有(C)互联网协会(2001年)。版权所有。

This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implementation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to the Internet Society or other Internet organizations, except as needed for the purpose of developing Internet standards in which case the procedures for copyrights defined in the Internet Standards process must be followed, or as required to translate it into languages other than English.

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The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assigns.

上述授予的有限许可是永久性的,互联网协会或其继承人或受让人不会撤销。

This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

本文件和其中包含的信息是按“原样”提供的,互联网协会和互联网工程任务组否认所有明示或暗示的保证,包括但不限于任何保证,即使用本文中的信息不会侵犯任何权利,或对适销性或特定用途适用性的任何默示保证。

Acknowledgement

确认

Funding for the RFC Editor function is currently provided by the Internet Society.

RFC编辑功能的资金目前由互联网协会提供。