在CCNP中,P2MP和P2MP NBMA 是什么意思,有什么不同? ospf p2mp和broadcast发送路由的区别
\u534e\u4e3anbma\uff0cp2mp\u548cp2p\u5728\u4f7f\u7528\u4e0a\u7684\u533a\u522bOSPF\u7f51\u7edc\u7c7b\u578b\u5e7f\u64ad\u3001NBMA\uff08\u975e\u5e7f\u64ad\u70b9\u8fbe\uff09\u3001P2MP\u3001P2P
\u5e7f\u64ad\u3001NBMA\u9700\u8981\u9009\u4e3eDR\u3001BDR
P2MP\u3001P2P\u9700\u8981\u9009\u4e3eDR\u3001BDR
\u5e7f\u64ad\u3001NBMADR\u9009\u4e3e\uff1a
\u9996\u5148\u4e24\u53f0\u8bbe\u5907\u4ea4\u4e92hello\u62a5\u6587\u6bd4\u8f83Hello\u62a5\u6587\u53c2\u6570\u53c2\u6570\u76f8\u540c\u624d\u8fdb\u884cDR/BDR\u9009\u4e3e\u5426\u5219\u80fd\u901a\u8baf
1\u3001Area ID
2\u3001Hello/Dead \u95f4\u95f4\u9694
3\u3001\u8ba4\u8bc1\u7c7b\u578b\u8ba4\u8bc1\u5bc6\u94a5
4\u3001\u7279 \u6b8a\u533a\u57df\u7c7b\u578bStub Flag
5\u3001\u7f51\u63a9\u7801
\u9762\u53c2\u6570\u90fd\u9996\u5148\u6bd4\u8f83\u7aef\u53e3\u4f18\u5148\u7ea7\u7aef\u53e3\u4f18\u5148\u7ea7\u9009DR\u7b2c\u4e8c\u9009BDR\u4f18\u5148\u7ea7\u76f8\u540c\u5219\u9700\u8981\u6bd4\u8f83Router IDRouter ID\u9009DR\u3001\u7b2c\u4e8c\u9009BDR\u4f18\u5148\u7ea70\u5219\u53c2\u4e0eDR\u3001BDR\u9009\u4e3e\u67e5\u770b\u8bbe\u5907OSPF\u72b6\u6001\u8fdb\u51652-way\u72b6\u6001
\u9762\u9650\u4e8e\u7b2cDR\u3001BDR\u9009\u4e3e\u4f18\u5148\u7ea7\u66f4\u9ad8\u52a0\u5165\u73b0\u7f51\u7edc\u4e8e\u5b89\u5168\u7a33\u5b9a\u8003\u8651\u65b0\u52a0\u5165\u8bbe\u5907\u53c2\u52a0DR\u3001BDR\u9009\u4e3e\u77e5\u9053DR\u3001BDR\u73b0\u6545\u969c\u624d\u53c2\u4e0e\u9009\u4e3e
\u9009\u4e3eDR\u3001BDR\u539f\u9632\u6b62\u8bbe\u5907\u95f4\u76f8\u4e92\u53d1\u9001OSPF\u4ea4\u4e92\u62a5\u6587\u6bcf\u53f0\u8bbe\u5907\u90fd\u4ea4\u4e92OSPF\u62a5\u6587\u7f51\u7edc\u5e26\u5bbd\u5feb\u6d88\u8017\u6389\u90fd\u4e0eDR\u3001BDR\u4ea4\u4e92\u62a5\u6587\u7531DR\u53d1\u51cf\u5c11OSPF\u62a5\u6587\u4ea4\u4e92\u63d0\u9ad8\u7f51\u7edc\u5e26\u5bbd\u5229\u7528\u7387
P2MP\u3001P2P\u9700\u8981\u9009\u4e3eDR\u3001BDR\u4f7f\u7528\u7ec4\u64ad\u5740224.0.0.5 224.0.0.6\u76f4\u63a5\u4ea4\u4e92OSPF\u62a5\u6587 \u4e9b\u5382\u5546\uff08H3C\uff09\u6ca1\u6309\u7167RFC\u6587\u6863\u5236\u4f5cOSPF\u534f\u8baedebug\u67e5\u770bOSPF\u4ea4\u4e92\u62a5\u6587\u4f7f\u7528\u7ec4\u64ad224.0.0.5.
OSPF\u6839\u636e\u94fe\u8def\u5c42\u534f\u8bae\u7c7b\u578b\u5c06\u7f51\u7edc\u5206\u4e3a\u4e0b\u5217\u56db\u79cd\u7c7b\u578b\uff1a
Broadcast\uff1a\u5f53\u94fe\u8def\u5c42\u534f\u8bae\u662fEthernet\u3001FDDI\u65f6\uff0cOSPF\u7f3a\u7701\u8ba4\u4e3a\u7f51\u7edc\u7c7b\u578b\u662fBroadcast\u3002\u5728\u8be5\u7c7b\u578b\u7684\u7f51\u7edc\u4e2d\uff0c\u901a\u5e38\u4ee5\u7ec4\u64ad\u5f62\u5f0f\uff08224.0.0.5\u548c224.0.0.6\uff09\u53d1\u9001\u534f\u8bae\u62a5\u6587\u3002
NBMA\uff08Non-Broadcast Multi-Access\uff0c\u975e\u5e7f\u64ad\u591a\u8def\u8bbf\u95ee\uff09\uff1a\u5f53\u94fe\u8def\u5c42\u534f\u8bae\u662f\u5e27\u4e2d\u7ee7\u3001ATM\u6216X.25\u65f6\uff0cOSPF\u7f3a\u7701\u8ba4\u4e3a\u7f51\u7edc\u7c7b\u578b\u662fNBMA\u3002\u5728\u8be5\u7c7b\u578b\u7684\u7f51\u7edc\u4e2d\uff0c\u4ee5\u5355\u64ad\u5f62\u5f0f\u53d1\u9001\u534f\u8bae\u62a5\u6587\u3002
P2MP\uff08Point-to-MultiPoint\uff0c\u70b9\u5230\u591a\u70b9\uff09\uff1a\u6ca1\u6709\u4e00\u79cd\u94fe\u8def\u5c42\u534f\u8bae\u4f1a\u88ab\u7f3a\u7701\u7684\u8ba4\u4e3a\u662fP2MP\u7c7b\u578b\u3002\u70b9\u5230\u591a\u70b9\u5fc5\u987b\u662f\u7531\u5176\u4ed6\u7684\u7f51\u7edc\u7c7b\u578b\u5f3a\u5236\u66f4\u6539\u7684\u3002\u5e38\u7528\u505a\u6cd5\u662f\u5c06NBMA\u6539\u4e3a\u70b9\u5230\u591a\u70b9\u7684\u7f51\u7edc\u3002\u5728\u8be5\u7c7b\u578b\u7684\u7f51\u7edc\u4e2d\uff0c\u4ee5\u7ec4\u64ad\u5f62\u5f0f\uff08224.0.0.5\uff09\u53d1\u9001\u534f\u8bae\u62a5\u6587\u3002
P2P\uff08Point-to-Point\uff0c\u70b9\u5230\u70b9\uff09\uff1a\u5f53\u94fe\u8def\u5c42\u534f\u8bae\u662fPPP\u3001HDLC\u65f6\uff0cOSPF\u7f3a\u7701\u8ba4\u4e3a\u7f51\u7edc\u7c7b\u578b\u662fP2P\u3002\u5728\u8be5\u7c7b\u578b\u7684\u7f51\u7edc\u4e2d\uff0c\u4ee5\u7ec4\u64ad\u5f62\u5f0f\uff08224.0.0.5\uff09\u53d1\u9001\u534f\u8bae\u62a5\u6587\u3002
NBMA\u4e0eP2MP\u7f51\u7edc\u4e4b\u95f4\u7684\u533a\u522b\u5982\u4e0b\uff1a
NBMA\u7f51\u7edc\u662f\u6307\u90a3\u4e9b\u5168\u8fde\u901a\u7684\u3001\u975e\u5e7f\u64ad\u3001\u591a\u70b9\u53ef\u8fbe\u7f51\u7edc\u3002\u800cP2MP\u7f51\u7edc\uff0c\u5219\u5e76\u4e0d\u9700\u8981\u4e00\u5b9a\u662f\u5168\u8fde\u901a\u7684\u3002
\u5728NBMA\u7f51\u7edc\u4e2d\u9700\u8981\u9009\u4e3eDR\u4e0eBDR\uff0c\u800c\u5728P2MP\u7f51\u7edc\u4e2d\u6ca1\u6709DR\u4e0eBDR\u3002
NBMA\u662f\u4e00\u79cd\u7f3a\u7701\u7684\u7f51\u7edc\u7c7b\u578b\uff0c\u800cP2MP\u7f51\u7edc\u5fc5\u987b\u662f\u7531\u5176\u5b83\u7684\u7f51\u7edc\u5f3a\u5236\u66f4\u6539\u7684\u3002\u6700\u5e38\u89c1\u7684\u505a\u6cd5\u662f\u5c06NBMA\u7f51\u7edc\u6539\u4e3aP2MP\u7f51\u7edc\u3002
NBMA\u7f51\u7edc\u91c7\u7528\u5355\u64ad\u53d1\u9001\u62a5\u6587\uff0c\u9700\u8981\u624b\u5de5\u914d\u7f6e\u90bb\u5c45\u3002P2MP\u7f51\u7edc\u91c7\u7528\u7ec4\u64ad\u65b9\u5f0f\u53d1\u9001\u62a5\u6587\u3002
broadcast\u4e0eP2MP\u7f51\u7edc\u7684\u533a\u522b\uff1a
broadcast\u7f51\u7edc\u9700\u8981\u9009\u4e3eDP\u548cBDR\uff0c\u800c\u5728P2MP\u7f51\u7edc\u4e2d\u6ca1\u6709DR\u4e0eBDR\u3002
broadcast\u662f\u4e00\u79cd\u7f3a\u7701\u7684\u7f51\u7edc\u7c7b\u578b\uff0c\u800cP2MP\u7f51\u7edc\u5fc5\u987b\u662f\u7531\u5176\u5b83\u7684\u7f51\u7edc\u5f3a\u5236\u66f4\u6539\u7684\u3002
broadcast\u7f51\u7edc\u4e2d\u4f7f\u7528\u7ec4\u64ad\u5730\u5740224.0.0.5\u548c224.0.0.6\uff0c\u800cP2MP\u7f51\u7edc\u4ee5\uff08224.0.0.5\uff09\u53d1\u9001\u534f\u8bae\u62a5\u6587\u3002
\u53c2\u8003\u8d44\u6599\uff1ahttp://www.h3c.com.cn/Products___Technology/Technology/Router/Other_technology/Technology_recommend/200805/605874_30003_0.htm
P2MP是点到多点网络，特点是组播更新，并且是通用标准
P2MP NBMA是非广播多路访问点到多点网络（其实就是NBMA和P2MP结合），特点是单播更新，且为Cisco私有
PS：他们的共同点是都不选DR，Hello时间为30S，并且会自动产生一条到达对方直连口的32位主机路由
扩展阅读：p2p平台有哪些 ... 互感器p1p2方向反了 ... 随身wifi严禁p2下载 ... 嘉际mpv ... 电动mpv ... p2p是什么 ... 互感器p1p2接线图 ... p2亢进p2a2 ... 互感器p1 p2哪面朝上 ...
