应报告，随机等待一段时间发送，若在等待当中该组有一个成员发送响应报告了，则就不再发送响应报告。80.
ying bao gao sui ji deng dai yi duan shi jian fa song ruo zai deng dai dang zhong gai zu you yi ge cheng yuan fa song xiang ying bao gao le ze jiu bu zai fa song xiang ying bao gao 80.
个组播路由器时选择查询器，ip最小的为查询器。79.igmp报告抑制，主机受到查询消息并不立即发送响
ge zu bo lu you qi shi xuan ze cha xun qi ip zui xiao de wei cha xun qi 79.igmp bao gao yi zhi zhu ji shou dao cha xun xiao xi bing bu li ji fa song xiang
离开组消息，若不是则安静的离开。在一定时间内路由器没收到该组的报告，则删除组。78. igmp当有多
li kai zu xiao xi ruo bu shi ze an jing de li kai zai yi ding shi jian nei lu you qi mei shou dao gai zu de bao gao ze shan chu zu 78. igmp dang you duo
主机存在。当主机想加入组，主动发送组成员关系报告。当主机要离开组时，如果他是组内的最后一个成员则发送
zhu ji cun zai dang zhu ji xiang jia ru zu zhu dong fa song zu cheng yuan guan xi bao gao dang zhu ji yao li kai zu shi ru guo ta shi zu nei de zui hou yi ge cheng yuan ze fa song
2236。77.igmp当中，路由器定时发送普通查询消息，根据组成员发送的关系报告来确定特定组是否由
2236 77.igmp dang zhong lu you qi ding shi fa song pu tong cha xun xiao xi gen ju zu cheng yuan fa song de guan xi bao gao lai que ding te ding zu shi fou you
，端口包含所有接受组播数据的主机端口。76. igmp v1 rfc1112、igmp v2 rfc
duan kou bao han suo you jie shou zu bo shu ju de zhu ji duan kou 76. igmp v1 rfc1112 igmp v2 rfc
的。而对源地址的检查是通过查询单模路由表来实现的。75.二层交换机组播功能实现：目的地址为组播mac
de er dui yuan di zhi de jian cha shi tong guo cha xun dan mo lu you biao lai shi xian de 75. er ceng jiao huan ji zu bo gong neng shi xian mu de di zhi wei zu bo mac
m路由器。74.组播转发澄海3c5.49地图下载采用rpf（逆向路径转发），查找组播报是否是从连接相应源地址的接口上转发而来
m lu you qi 74. zu bo zhuan fa cheng hai 3c5.49 di tu xia zai cai yong rpf ni xiang lu jing zhuan fa cha zhao zu bo bao shi fou shi cong lian jie xiang ying yuan di zhi de jie kou shang zhuan fa er lai
6进制。73.224.0.0.1全体用户，224.0.0.2全体路由器，224.0.0.13全体pi
6 jin zhi 73.224.0.0.1 quan ti yong hu 224.0.0.2 quan ti lu you qi 224.0.0.13 quan ti pi
55.255.255.72.组播mac前三位01-00-5澄海3c5.49地图下载e，后面三位为ip地址后三位10进制转成1
55.255.255.72. zu bo mac qian san wei 01-00-5 cheng hai 3c5.49 di tu xia zai e hou mian san wei wei ip di zhi hou san wei 10 jin zhi zhuan cheng 1
管理组地址239.0.0.0到239.255.255.255.用户组播地址224.0.1到238.2
guan li zu di zhi 239.0.0.0 dao 239.255.255.255. yong hu zu bo di zhi 224.0.1 dao 238.2
0.0 到239.255.255.255。保留组播224.0.0.0 到224.0.0.255。本地
0.0 dao 239.255.255.255 bao liu zu bo 224.0.0.0 dao 224.0.0.255 ben di
p、hmvr、澄海3c5.49地图下载rgmp、gmrp等。常用的为igmp snooping。71. 组播地址224.0.
p hmvr cheng hai 3c5.49 di tu xia zai rgmp gmrp deng chang yong de wei igmp snooping 71. zu bo di zhi 224.0.
f。69. 域内组播稀疏性 cbt、pim-。70. 二层组播协议，igmpsnooping、hgm
f 69. yu nei zu bo xi shu xing cbt pim- 70. er ceng zu bo xie yi igmpsnooping hgm
括域内组播路由协议和域间组澄海3c5.49地图下载播路由协议。68. 域内组播密集型 dvmrp 、pim-dm 、mosp
kuo yu nei zu bo lu you xie yi he yu jian zu cheng hai 3c5.49 di tu xia zai bo lu you xie yi 68. yu nei zu bo mi ji xing dvmrp pim-dm mosp
序缴付。66. 组成员关系协议为主机与路由器间包括igmp。67.组播路由协议为路由器与路由器之间包
xu jiao fu 66. zu cheng yuan guan xi xie yi wei zhu ji yu lu you qi jian bao kuo igmp 67. zu bo lu you xie yi wei lu you qi yu lu you qi zhi jian bao
在与提高效率、优化性能和分布式应用。65.组播基澄海3c5.49地图下载于udp、尽最大努力传送、无阻塞控制、数据报重复和无
zai yu ti gao xiao lv you hua xing neng he fen bu shi ying yong 65. zu bo ji cheng hai 3c5.49 di tu xia zai yu udp jin zui da nu li chuan song wu zu sai kong zhi shu ju bao zhong fu he wu
都保持有一分数据流。63.组播应用，多媒体会议、数据分发、实时数据组播、游戏与仿真。64. 组播优势
dou bao chi you yi fen shu ju liu 63. zu bo ying yong duo mei ti hui yi shu ju fen fa shi shi shu ju zu bo you xi yu fang zhen 64. zu bo you shi
在于某个组的所有主机都可接受到消息。组播源只发送一份数据报，杂需要复制的地方会澄海3c5.49地图下载被复制分发，每个网段内
zai yu mou ge zu de suo you zhu ji dou ke jie shou dao xiao xi zu bo yuan zhi fa song yi fen shu ju bao za xu yao fu zhi de di fang hui cheng hai 3c5.49 di tu xia zai bei fu zhi fen fa mei ge wang duan nei
61. stp 可debug error、packet、event。62.组播向一组主机发送消息，存
61. stp ke debug error packet event 62. zu bo xiang yi zu zhu ji fa song xiao xi cun