ITU-T X.149 SPANISH-2003
公共数据帧中继网所支持的IP网络的性能.X系列:数据网及开放系统通信.公共数据网:网络方面.17号研究组

Performance of IP networks when supported by public Frame Relay data networks

ITU-T X.149 SPANISH-2003 发布历史

The key objective of this recommendation is to specify the end-to-end performance that could be achieved by an IP network when the backbone network providing the connectivity between the IP Routers is provided by Frame Relay infrastructure. This recommendation does not specify end to end performance objectives for IP networks. The Recommendation provides an estimate of the IP layer performance obtained when Public Frame Relay Data Networks are used to transport the IP packets and indicates how the IP QoS classes defined in Recommendation Y.1541 could besupported. The Recommendation provides an analysis of the Mappings between the Frame Relay and IP performance parameters. Numerical values of the expected IP performance parameters are derived from the objective values specified for the Frame Relay Performance parameters as specified in Recommendation X.146. Using a general model an analysis of the expected performance for various IP Packet sizes (corresponding to various IP applications) and the influence of the Frame Relay Network infrastructure (eg inter-node transmission trunks) is provided. This analysis provides an upper bound on the performance that could be achieved by an IP network when carried over a frame relay network, since the IP network infrastructure could increase both the achieved IP packet transit delay and IP packet loss rate. This recommendation, and in particular the performance parameter mappings between Frame Relay and IP Networks is seen as complementary to Recommendation Y1541, since Rec Y.1541 is technology independent with regard to the provision the physical and link layers The scope of the Recommendation is limited to IP networks where the link infrastructure is provided by or supported by Public Frame Relay Data Networks.

ITU-T X.149 SPANISH-2003由国际电信联盟 IX-ITU 发布于 2003。

ITU-T X.149 SPANISH-2003 在中国标准分类中归属于: M13 通信网结构。

ITU-T X.149 SPANISH-2003 发布之时，引用了标准

• ITU-T X.36-2003 通过专用电路提供帧中继数据传输业务的公用数据网使用的数据终端设备(DTE)和数据电路终接设备(DCE
• ITU-T X.76-2003 在公共网络之间提供PVC和/或SVC帧中继数据传输业务的网络到网络接口 系列X
• ITU-T X.140-1992 经由公用数据网的通信的一般业务质量参数
• ITU-T X.144-2003 提供国际帧中继PVC业务的数据网的用户信息传送性能参数
• ITU-T X.145-2003 提供公共帧中继SVC业务的连接建立与解除的性能参数
• ITU-T X.146-2000 可应用于帧中继的业务等级的性能目标和质量 系列X
• ITU-T Y.1221 互联网协议(IP)网络中的流量控制和拥塞控制 (研究组12)
• ITU-T Y.1231 IP网络接入结构Y系列 全球信息基础设施和网络协议方面-结构,接入,网络能力和资源管理 研究组13
• ITU-T E.651 IP接入网(AN)的话务工程的参考连接 E系列:全面网络操作,电话服务,服务操作和人员因素 服务质量
• ITU-T G.1000-2001 通信的业务质量:框架和定义.系列G:传输系统和媒体数字系统和网络的业务质量和性能.12号研究组
• ITU-T G.1010-2001 终端用户多媒体QoS种类
• RFC 791-1981 

ITU-T X.149 SPANISH-2003的历代版本如下：

• 2003年 ITU-T X.149 SPANISH-2003 公共数据帧中继网所支持的IP网络的性能.X系列:数据网及开放系统通信.公共数据网:网络方面.17号研究组

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标准号

ITU-T X.149 SPANISH-2003

发布日期

2003年

实施日期

废止日期

无

中国标准分类号

M13

发布单位

IX-ITU

适用范围

The key objective of this recommendation is to specify the end-to-end performance that could be achieved by an IP network when the backbone network providing the connectivity between the IP Routers is provided by Frame Relay infrastructure. This recommendation does not specify end to end performance objectives for IP networks. The Recommendation provides an estimate of the IP layer performance obtained when Public Frame Relay Data Networks are used to transport the IP packets and indicates how the IP QoS classes defined in Recommendation Y.1541 could besupported. The Recommendation provides an analysis of the Mappings between the Frame Relay and IP performance parameters. Numerical values of the expected IP performance parameters are derived from the objective values specified for the Frame Relay Performance parameters as specified in Recommendation X.146. Using a general model an analysis of the expected performance for various IP Packet sizes (corresponding to various IP applications) and the influence of the Frame Relay Network infrastructure (eg inter-node transmission trunks) is provided. This analysis provides an upper bound on the performance that could be achieved by an IP network when carried over a frame relay network, since the IP network infrastructure could increase both the achieved IP packet transit delay and IP packet loss rate. This recommendation, and in particular the performance parameter mappings between Frame Relay and IP Networks is seen as complementary to Recommendation Y1541, since Rec Y.1541 is technology independent with regard to the provision the physical and link layers The scope of the Recommendation is limited to IP networks where the link infrastructure is provided by or supported by Public Frame Relay Data Networks.