📄 002_38.htm

📁 通讯类的标准。对要开发SS7的朋友有很大帮助的。（通讯协议）
💻 HTM
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- saved from url=(0059)http://www.chinagk.org/technology/IPTech/002/css/002_38.htm -->
<HTML><HEAD><TITLE>002_38</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<STYLE type=text/css>.pg {
	LEFT: 0px; WIDTH: 635px; POSITION: absolute; TOP: 0px; HEIGHT: 983px
}
BODY {
	FONT-SIZE: 13px; COLOR: #000000; FONT-FAMILY: ""; BACKGROUND-COLOR: #ffffff
}
A {
	TEXT-DECORATION: none
}
.ps0 {
	LEFT: 38px; WIDTH: 557px; POSITION: absolute; TOP: 102px
}
.ps1 {
	LEFT: 38px; WIDTH: 556px; POSITION: absolute; TOP: 123px
}
.ps2 {
	LEFT: 38px; WIDTH: 492px; POSITION: absolute; TOP: 143px
}
.ps3 {
	LEFT: 65px; WIDTH: 215px; POSITION: absolute; TOP: 163px
}
.ps4 {
	LEFT: 224px; WIDTH: 183px; POSITION: absolute; TOP: 185px
}
.ps5 {
	LEFT: 121px; WIDTH: 11px; POSITION: absolute; TOP: 213px
}
.ps6 {
	LEFT: 150px; WIDTH: 11px; POSITION: absolute; TOP: 213px
}
.ps7 {
	LEFT: 426px; WIDTH: 11px; POSITION: absolute; TOP: 213px
}
.ps8 {
	LEFT: 454px; WIDTH: 11px; POSITION: absolute; TOP: 213px
}
.ps9 {
	LEFT: 65px; WIDTH: 152px; POSITION: absolute; TOP: 233px
}
.ps10 {
	LEFT: 65px; WIDTH: 169px; POSITION: absolute; TOP: 281px
}
.ps11 {
	LEFT: 65px; WIDTH: 99px; POSITION: absolute; TOP: 313px
}
.ps12 {
	LEFT: 65px; WIDTH: 510px; POSITION: absolute; TOP: 410px
}
.ps13 {
	LEFT: 38px; WIDTH: 503px; POSITION: absolute; TOP: 431px
}
.ps14 {
	LEFT: 65px; WIDTH: 530px; POSITION: absolute; TOP: 451px
}
.ps15 {
	LEFT: 38px; WIDTH: 556px; POSITION: absolute; TOP: 470px
}
.ps16 {
	LEFT: 38px; WIDTH: 556px; POSITION: absolute; TOP: 490px
}
.ps17 {
	LEFT: 31px; WIDTH: 247px; POSITION: absolute; TOP: 511px
}
.ps18 {
	LEFT: 65px; WIDTH: 471px; POSITION: absolute; TOP: 532px
}
.ps19 {
	LEFT: 559px; WIDTH: 36px; POSITION: absolute; TOP: 532px
}
.ps20 {
	LEFT: 38px; WIDTH: 556px; POSITION: absolute; TOP: 552px
}
.ps21 {
	LEFT: 38px; WIDTH: 270px; POSITION: absolute; TOP: 572px
}
.ps22 {
	LEFT: 65px; WIDTH: 469px; POSITION: absolute; TOP: 593px
}
.ps23 {
	LEFT: 65px; WIDTH: 305px; POSITION: absolute; TOP: 613px
}
.ps24 {
	LEFT: 65px; WIDTH: 530px; POSITION: absolute; TOP: 633px
}
.ps25 {
	LEFT: 38px; WIDTH: 556px; POSITION: absolute; TOP: 653px
}
.ps26 {
	LEFT: 38px; WIDTH: 40px; POSITION: absolute; TOP: 673px
}
.ps27 {
	LEFT: 65px; WIDTH: 530px; POSITION: absolute; TOP: 694px
}
.ps28 {
	LEFT: 38px; WIDTH: 556px; POSITION: absolute; TOP: 713px
}
.ps29 {
	LEFT: 38px; WIDTH: 94px; POSITION: absolute; TOP: 734px
}
.ps30 {
	LEFT: 65px; WIDTH: 116px; POSITION: absolute; TOP: 755px
}
.ps31 {
	LEFT: 65px; WIDTH: 530px; POSITION: absolute; TOP: 774px
}
.ps32 {
	LEFT: 38px; WIDTH: 556px; POSITION: absolute; TOP: 794px
}
.ps33 {
	LEFT: 38px; WIDTH: 136px; POSITION: absolute; TOP: 815px
}
.ps34 {
	LEFT: 65px; WIDTH: 382px; POSITION: absolute; TOP: 835px
}
.ps35 {
	LEFT: 65px; WIDTH: 530px; POSITION: absolute; TOP: 855px
}
.ps36 {
	LEFT: 38px; WIDTH: 556px; POSITION: absolute; TOP: 876px
}
.ps37 {
	LEFT: 38px; WIDTH: 53px; POSITION: absolute; TOP: 896px
}
.ps38 {
	LEFT: 54px; WIDTH: 259px; POSITION: absolute; TOP: 31px
}
.ps39 {
	LEFT: 547px; WIDTH: 43px; POSITION: absolute; TOP: 64px
}
.ps40 {
	LEFT: 328px; WIDTH: 246px; POSITION: absolute; TOP: 235px
}
.ps41 {
	LEFT: 314px; WIDTH: 260px; POSITION: absolute; TOP: 251px
}
.ps42 {
	LEFT: 314px; WIDTH: 196px; POSITION: absolute; TOP: 267px
}
.ps43 {
	LEFT: 328px; WIDTH: 246px; POSITION: absolute; TOP: 283px
}
.ps44 {
	LEFT: 314px; WIDTH: 98px; POSITION: absolute; TOP: 299px
}
.ps45 {
	LEFT: 328px; WIDTH: 252px; POSITION: absolute; TOP: 315px
}
.ps46 {
	LEFT: 314px; WIDTH: 260px; POSITION: absolute; TOP: 331px
}
.ps47 {
	LEFT: 314px; WIDTH: 265px; POSITION: absolute; TOP: 347px
}
.ps48 {
	LEFT: 314px; WIDTH: 260px; POSITION: absolute; TOP: 363px
}
.ps49 {
	LEFT: 314px; WIDTH: 64px; POSITION: absolute; TOP: 379px
}
.ft1 {
	FONT-SIZE: 12px; FONT-FAMILY: ""
}
.ft2 {
	FONT-SIZE: 11px
}
.ft3 {
	FONT-SIZE: 13px; FONT-FAMILY: "Times New Roman",Times,serif
}
.ft4 {
	FONT-WEIGHT: bold; FONT-SIZE: 37px; FONT-STYLE: italic; FONT-FAMILY: "Times New Roman",Times,serif
}
.ft5 {
	FONT-SIZE: 21px; COLOR: #000000; FONT-STYLE: italic; FONT-FAMILY: ""
}
.em0 {
	FONT-SIZE: 13px; FONT-FAMILY: "Times New Roman",Times,serif
}
.em1 {
	FONT-SIZE: 10px; FONT-FAMILY: "Times New Roman",Times,serif
}
.em2 {
	FONT-SIZE: 13px; FONT-FAMILY: ""
}
.em3 {
	FONT-WEIGHT: normal; FONT-SIZE: 13px; FONT-STYLE: italic
}
.em4 {
	FONT-SIZE: 11px; FONT-FAMILY: ""
}
.em5 {
	FONT-SIZE: 11px; FONT-FAMILY: "Times New Roman",Times,serif
}
.em6 {
	FONT-SIZE: 10px; FONT-FAMILY: Arial,Helvetica,sans-serif
}
.em7 {
	FONT-SIZE: 13px; FONT-STYLE: italic; FONT-FAMILY: ""
}
.em8 {
	FONT-WEIGHT: normal; FONT-SIZE: 13px; FONT-STYLE: italic; FONT-FAMILY: ""
}
.im0 {
	LEFT: 37px; WIDTH: 558px; POSITION: absolute; TOP: 205px
}
.im1 {
	LEFT: 37px; WIDTH: 558px; POSITION: absolute; TOP: 229px
}
.im2 {
	LEFT: 37px; WIDTH: 558px; POSITION: absolute; TOP: 395px
}
.im3 {
	LEFT: 36px; WIDTH: 564px; POSITION: absolute; TOP: 24px
}
</STYLE>

<META content="MSHTML 6.00.2600.0" name=GENERATOR></HEAD>
<BODY>
<DIV class=pg></DIV><!-- bitmap and vector images are written here -->
<DIV class=im0><IMG height=3 src="002_38.files/002_38_1.jpg" width=558 
border=0></DIV>
<DIV class=im1><IMG height=2 src="002_38.files/002_38_2.jpg" width=558 
border=0></DIV>
<DIV class=im2><IMG height=3 src="002_38.files/002_38_3.jpg" width=558 
border=0></DIV>
<DIV class=im3><IMG height=64 src="002_38.files/left.jpg" width=564 
border=0></DIV><!-- text starts here --><SPAN 
class=ps0><NOBR>从发送者下溯到接收者。路由器在每个中间路由点保存一个<SPAN class=em0>PATH 
STATE</SPAN>。这个状态包括前面</NOBR></SPAN> <SPAN class=ps1><NOBR>路由器（中继器）的单播<SPAN 
class=em0>IP</SPAN>地址，<SPAN 
class=em0>PATH</SPAN>消息是从这个路由器接收到的。状态信息可以用来沿</NOBR></SPAN> <SPAN 
class=ps2><NOBR>着相应<SPAN class=em0>PATH</SPAN>消息访问过的相同路由器集合，为来自接收者的<SPAN 
class=em0>RESV</SPAN>消息选择路由。</NOBR></SPAN> <SPAN class=ps3><NOBR>表<SPAN 
class=em0>2-5</SPAN>中是<SPAN class=em5>PATH</SPAN>消息中包含的信息。</NOBR></SPAN> <SPAN 
class=ps4><NOBR><SPAN class=ft1>表<SPAN class=em6>2-5 &nbsp;&nbsp;RSVP 
PATH</SPAN>消息信息参数</SPAN></NOBR></SPAN> <SPAN class=ps5><NOBR><SPAN 
class=ft2>信</SPAN></NOBR></SPAN> <SPAN class=ps6><NOBR><SPAN 
class=ft2>息</SPAN></NOBR></SPAN> <SPAN class=ps7><NOBR><SPAN 
class=ft2>意</SPAN></NOBR></SPAN> <SPAN class=ps8><NOBR><SPAN 
class=ft2>义</SPAN></NOBR></SPAN> <SPAN class=ps9><NOBR><SPAN 
class=ft2>发送者模板（<SPAN class=em1>Sender Template</SPAN>）</SPAN></NOBR></SPAN> 
<SPAN class=ps10><NOBR><SPAN class=ft2>发送者通信量说明（<SPAN class=em1>Sender 
Tspec</SPAN>）</SPAN></NOBR></SPAN> <SPAN class=ps11><NOBR><SPAN 
class=ft2>广告说明（<SPAN class=em1>Adspec</SPAN>）</SPAN></NOBR></SPAN> <SPAN 
class=ps12><NOBR><SPAN class=ft3>PATH<SPAN 
class=em2>消息和数据包一样，和信源、目标地址一起发送。这样可以保证在通过不支持</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps13><NOBR><SPAN class=ft3>RSVP<SPAN class=em2>的区域时能够正确地路由。另一方面，<SPAN 
class=em0>RSVP RESV</SPAN>消息每次移动一个中继站，</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps14><NOBR><SPAN class=ft3>RESV<SPAN 
class=em2>消息包含流描述符列表、策略数据和确认请求。确认请求让接收者知道请求已经正</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps15><NOBR>确执行，并回到接收者。策略数据被携带为每个中间点策略控制的输入，以提供应用反馈和</NOBR></SPAN> <SPAN 
class=ps16><NOBR>授权。流描述符列表携带流说明和过滤器说明列表（<SPAN 
class=em0>FF</SPAN>方式），或者流说明和过滤器说明列表</NOBR></SPAN> <SPAN class=ps17><NOBR>（<SPAN 
class=em0>SE</SPAN>方式），或者只是<SPAN class=em0>WF</SPAN>方式的流说明。</NOBR></SPAN> <SPAN 
class=ps18><NOBR><SPAN class=ft3>PATH TEARDOWN<SPAN 
class=em2>消息从发送者起源向接收者行进。当路由器接收到一条</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps19><NOBR><SPAN class=ft3>PATH</SPAN></NOBR></SPAN> <SPAN 
class=ps20><NOBR><SPAN class=ft3>TEARDOWN<SPAN 
class=em2>消息时，它为保留出去相配的通道状态。这些消息必须沿与</SPAN>PATH<SPAN 
class=em2>消息相同的路</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps21><NOBR>线路由，否则，通道的中间段将不会被拆除。</NOBR></SPAN> <SPAN class=ps22><NOBR><SPAN 
class=ft3>RESV TEARDOWN<SPAN 
class=em2>消息是接收者产生的，在每个中间点删除相配的保留状态。</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps23><NOBR><SPAN class=ft3>RESV CONF<SPAN 
class=em2>消息被传送到会话接收者的单播地址。</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps24><NOBR><SPAN class=ft3>PATHERR<SPAN 
class=em2>消息传送和路径信息处理有关的错误。它们沿着已经建立的路径状态路由回到</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps25><NOBR>发送者。为了帮助译解错误，它们包括已经感受到该错误的节点的<SPAN 
class=em0>IP</SPAN>地址、以及可选的策略</NOBR></SPAN> <SPAN 
class=ps26><NOBR>数据。</NOBR></SPAN> <SPAN class=ps27><NOBR><SPAN 
class=ft3>RESVERR<SPAN class=em2>消息传送和路径上路由器的</SPAN>RESV<SPAN 
class=em2>消息处理有关的错误。它们是在某个时间的</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps28><NOBR>路由中继段，使用已建立的保留状态。它们包括遭受错误的节点的<SPAN 
class=em0>IP</SPAN>地址和帮助解码错误的</NOBR></SPAN> <SPAN 
class=ps29><NOBR>可选策略数据。</NOBR></SPAN> <SPAN class=ps30><NOBR><SPAN class=ft3>4. 
RSVP<SPAN class=em7>的潜在问题</SPAN></SPAN></NOBR></SPAN> <SPAN 
class=ps31><NOBR>如前所述，一个可能的重要问题是，如果为不是基于报头中的<SPAN 
class=em0>IP</SPAN>地址的包选择路由。协</NOBR></SPAN> <SPAN 
class=ps32><NOBR>议和体系结构，如多协议标记交换（<SPAN class=em0>MultiProtocol Label 
Switching</SPAN>，<SPAN class=em0>MPLS</SPAN>），以令人满意的</NOBR></SPAN> <SPAN 
class=ps33><NOBR>形式提出了这一问题。</NOBR></SPAN> <SPAN 
class=ps34><NOBR>有两个“杀手”保留问题已经被提出，并为工作组提出了建议。</NOBR></SPAN> <SPAN 
class=ps35><NOBR>在第一个问题中，接收者做出了新保留<SPAN class=em0>Q1<SPAN 
class=em2>，</SPAN></SPAN>而它恰好比已有的保留<SPAN 
class=em0>Q0</SPAN>大。合并保留的结</NOBR></SPAN> <SPAN 
class=ps36><NOBR>果会被上游节点中的接纳控制拒绝。如果这种情况发生，它也不一定会对已有的保留造成不</NOBR></SPAN> <SPAN 
class=ps37><NOBR>利影响。</NOBR></SPAN> <SPAN class=ps38><NOBR><SPAN 
class=ft4>94&nbsp;&nbsp;<SPAN class=em3>IP </SPAN><SPAN 
class=em8>电话技术：稳定的</SPAN><SPAN class=em3>VoIP</SPAN><SPAN 
class=em8>服务集成</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps39><NOBR><SPAN 
class=ft5>文档</SPAN></NOBR></SPAN> <SPAN class=ps40><NOBR><SPAN 
class=ft2>定义了会话期间发送者将要发送的数据包类型。它</SPAN></NOBR></SPAN> <SPAN 
class=ps41><NOBR><SPAN class=ft2>可以用做限定器，允许接收者把来自这个发送者的包</SPAN></NOBR></SPAN> 
<SPAN class=ps42><NOBR><SPAN class=ft2>和相同会话中可能出现的其他包区分开来</SPAN></NOBR></SPAN> 
<SPAN class=ps43><NOBR><SPAN 
class=ft2>定义了将要发送数据的通信量特性。可以作为沿路</SPAN></NOBR></SPAN> <SPAN 
class=ps44><NOBR><SPAN class=ft2>接纳控制算法的输入</SPAN></NOBR></SPAN> <SPAN 
class=ps45><NOBR><SPAN class=ft2>用于<SPAN class=em1>OPWA<SPAN 
class=em4>（</SPAN>One-Pass With Adertising<SPAN 
class=em4>，</SPAN></SPAN>广告单通）</SPAN></NOBR></SPAN> <SPAN class=ps46><NOBR><SPAN 
class=ft2>信息。接收者使用这种方法来查找<SPAN class=em1>QoS</SPAN>请求的结果。路</SPAN></NOBR></SPAN> 
<SPAN class=ps47><NOBR><SPAN 
class=ft2>径性能的总结广告沿路更新，向下游传播到接收者。</SPAN></NOBR></SPAN> <SPAN 
class=ps48><NOBR><SPAN class=ft2>接收者这时已经清楚地知道能否包含要求的<SPAN 
class=em1>QoS</SPAN>、是否</SPAN></NOBR></SPAN> <SPAN class=ps49><NOBR><SPAN 
class=ft2>需要做出调整</SPAN></NOBR></SPAN> </BODY></HTML>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -