IGRP(Interior Gateway Routing Protocol,\u5167\u90e8\u9598\u9053\u8def\u7531\u5354\u5b9a)
1980\u601d\u79d1\u5c08\u5229,\u512a\u65bcRIP\u4f46\u76f8\u4f3c
hop count:\u6709\u66f4\u5927\u9650\u5236,\u6700\u5927255\u9810\u8a2d100
\u6bcf90\u79d2\u9001\u51fa\u8def\u7531\u8cc7\u8a0a\u66f4\u65b0,\u6216\u70ba\u67d0\u4e00\u81ea\u6cbb\u7cfb\u7d71\u5ee3\u64ad\u7db2\u8def
\u4f7f\u7528autonomous-system-number\u4f86\u555f\u52d5
\u6536\u6582\u6bd4rip\u5feb
ip\u7684PROT\u6b04\u70ba9
IGRP\u5167\u90e8=100<\/p>\n\n\n\n
\u7279\u6027\u5982\u4e0b:
\u80fd\u81ea\u52d5\u638c\u63a7\u7121\u9650\u4e14\u8907\u96dc\u62d3\u6a38
\u80fd\u6839\u64da\u4e0d\u540c\u7684bandwidth\u53cadelay\u7279\u6027,\u5f48\u6027\u5730\u5206\u5272\u5340\u6bb5
\u5728\u975e\u5e38\u5927\u578b\u7684\u7db2\u8def\u5177scalability(\u64f4\u5145)\u7684\u80fd\u529b<\/p>\n\n\n\n
\u4f7f\u7528\u7684\u6280\u8853\u5305\u62ec
trigger update
hold-down timer
split horizon
poison reverse<\/p>\n\n\n\n
Metric\u6c7a\u5b9a\u9810\u8a2d\u662f\u4f9dbandwidth,delay,\u4e5f\u53ef\u4f9dload,reliability ,\u516c\u5f0f\u5982\u4e0b:
metric=[k1*bandwidth+k2*bandwidth\/(256-load)+k3*delay]*[k5\/(reliablity+k4)]
(\u9810\u8a2dk1=k3=1,k2=k4=k5=0,\u6240\u4ee5metric=k1*bandwidth+k3*delay)
metric\u4f7f\u752824bit\u6b0a\u503c<\/p>\n\n\n\n
\u8def\u5f91\u6703\u5b9a\u671f\u66f4\u65b0\u901a\u544aadvertise:
\u5c01\u88dd\u5728ip\u5c01\u5305\u5167,\u82e5header\u88e1\u7684protocol\u6b04\u70ba9\u5247\u70ba\u66f4\u65b0\u901a\u544a
\u8def\u5f91\u6709\u4ee5\u4e0b\u4e09\u7a2e:
\u3000interior routes(\u5167\u90e8\u8def\u5f91):\u8def\u7531\u5668\u4ecb\u9762\u8207\u6240\u9023\u5b50\u7db2\u8def\u9593\u7684\u8def\u5f91
\u3000system routes(\u7cfb\u7d71\u8def\u5f91):\u5728\u81ea\u6cbb\u7cfb\u7d71\u5916\u5230\u9054\u7db2\u8def\u7684\u8def\u5f91
\u3000exterior routes(\u5916\u90e8\u8def\u5f91):\u5728\u81ea\u6cbb\u7cfb\u7d71\u5916\u5230\u9054\u7db2\u8def\u7684\u8def\u5f91,\u4e14\u7531\u6700\u5f8c\u9598\u9053\u5668\u9023\u51fa\u53bb<\/p>\n\n\n\n
\u7528\u56db\u7a2e\u8a08\u6642\u5668\u63a7\u5236\u6548\u80fd
update timer\uff1a90sec
\u3000\u6642\u9593\u5230\u52d5\u4f5c:\u767c\u4f48\u66f4\u65b0
invalid timer:270sec,\u7b49\u5f85\u67d0\u689d\u8def\u5f91\u7684\u66f4\u65b0\u8cc7\u8a0a,\u6536\u5230\u66f4\u65b0\u5247\u6b780sec
\u3000\u6642\u9593\u5230\u52d5\u4f5c:\u4e0d\u518d\u76f8\u4fe1\u5f8c\u7e8c\u66f4\u65b0,\u4e26\u5ba3\u544a\u6b64\u8def\u5f91\u7121\u6548
holddown timers:280sec,\u6307\u5b9a\u5ffd\u7565\u8f03\u5dee\u7684\u8def\u5f91\u8cc7\u8a0a\u7684\u6642\u9593\u91cf
\u3000\u6642\u9593\u5230\u52d5\u4f5c:\u96e2\u958bholddown\u72c0\u614b
flush timer :630sec,\u7b49\u5f85\u8def\u5f91\u66f4\u65b0
\u3000\u6642\u9593\u5230\u52d5\u4f5c:\u5c07\u8def\u5f91\u7531\u8def\u7531\u8868\u522a\u9664<\/p>\n\n\n\n
…………………………………………………………………………..<\/p>\n\n\n\n
EIGRP(enhanced igrp,\u52a0\u5f37\u7248IGRP)<\/strong> \u7279\u8272<\/strong> \u5dee\u7570<\/strong> \u512a\u9ede:<\/strong> ………………<\/p>\n\n\n\n IPv6 EIGRP<\/strong> ……………… <\/p>\n\n\n\n hello\u7684\u7279\u9ede<\/strong> hello\u7684\u9593\u9694\u6642\u9593<\/strong> EIGRP\u5efa\u7acb\u904b\u4f5c\u904e\u7a0b <\/strong> EIGRP\u9130\u5c45\u9a57\u8b49<\/strong> …………… <\/p>\n\n\n\n EIGRP\u7dad\u8b773\u7a2etable<\/strong> metric,\u53ef\u5206\u4ee5\u4e0b\u5169\u7a2e DUAL(diffusing update algorithm,\u64f4\u6563\u5f0f\u66f4\u65b0\u6f14\u7b97\u6cd5)<\/strong> DUAL\u7684\u627e\u5c0b\u6b65\u9a5f\u5982\u4e0b<\/strong> query\u554f\u984c<\/strong> … <\/p>\n\n\n\n EIGRP\u4f7f\u7528\u4ee5\u4e0b\u7684\u5c01\u5305\u985e\u578b\u50b3\u9001\u8a0a\u606f<\/strong> UPDATE\u8a0a\u606f\u5305\u542b\u4ee5\u4e0b<\/strong> RTP(reliable transport protocol,\u53ef\u9760\u7684\u50b3\u8f38\u5354\u5b9a)<\/strong> IGRP(Interior Gateway Routing …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[25],"tags":[],"class_list":["post-784","post","type-post","status-publish","format-standard","hentry","category-osi-layer3"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/784","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/comments?post=784"}],"version-history":[{"count":0,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/784\/revisions"}],"wp:attachment":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/media?parent=784"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/categories?post=784"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/tags?post=784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
IP\u7684prot(\u901a\u8a0a\u5354\u5b9a\u985e\u578b)\u70ba88,\u975eTCP\u53caUDP
update\u5c01\u5305\u7684multicast address\u70ba224.0.0.10,ipv6\u683c\u5f0f\u70baff02::a
AD:EIGRP\u5167\u90e8=90\uff0cEIGRP\u5916\u90e8=170,EIGRP summary=5\u3000
ps:\u50c5\u652f\u63f4MD5\u9a57\u8b49<\/p>\n\n\n\n
\u6709\u8b8a\u52d5\u6216\u767c\u73fe\u9130\u5c45\u624d\u767c\u51fa\u66f4\u65b0\u901a\u544a,\u555f\u52d5\u6642\u5148\u540c\u6b65\u9130\u5c45\u9593\u7684\u8def\u5f91\u8868,\u5c31\u50cflink state(\u93c8\u8def\u72c0\u614b)
\u4e0d\u50b3\u9001\u93c8\u8def\u72c0\u614b\u5c01\u5305,\u800c\u50b3\u9001\u8ddd\u96e2\u5411\u91cf\u66f4\u65b0,\u5c31\u50cfdistance vector(\u8ddd\u96e2\u5411\u91cf)<\/p>\n\n\n\n
\u548cigrp\u76f8\u540c\u7684\u6709:
\u3000\u4f7f\u7528autonomous-system-number\u4f86\u555f\u52d5
\u3000\u4f7f\u7528routing by rumor\u6a5f\u5236
\u548cigrp\u4e0d\u540c\u7684\u6709:
\u3000metric:\u8a08\u7b97\u76f8\u540c,\u4f46\u6578\u91cf\u8981\u5728*256,\u4f7f\u752832bit\u6b0a\u503c
\u3000hop count:\u9810\u8a2d100,\u53ef\u52a0\u5927\u5230224<\/p>\n\n\n\n
\u900f\u904ePDM(protocol-depedent module,\u5354\u5b9a\u76f8\u4f9d\u6a21\u5f0f)\u652f\u63f4\u591a\u5354\u5b9a\u5982TCP\/IP,apple talk,ipx,\u5404\u5354\u5b9a\u6709\u5404\u5225\u7684\u8868\u8a18\u9304\u5354\u5b9a\u7684\u8def\u5f91\u8cc7\u8a0a
classless\u652f\u63f4VLSM\/CIDR,\u652f\u63f4route aggregation\u8207discontiguous subnet
\u652f\u63f4\u624b\u52d5\u548c\u81ea\u52d5route summarization(\u8def\u5f91\u532f\u6574),\u9810\u8a2d\u4f7f\u7528\u81ea\u52d5\u532f\u6574
\u900f\u904eRTP\u901a\u8a0a
\u4f7f\u7528DUAL\u4f86\u8a08\u7b97\u8def\u5f91,converge\u5feb
\u7528hello\u6709\u6548\u7387\u7684\u767c\u73fe\u9130\u5c45,\u6e1b\u5c11\u983b\u5bec\u4f7f\u7528
\u6bd4ospf\u7c21\u55ae,\u9650\u5236\u8f03\u5c11
\u7f3a\u9ede:<\/strong>
cpu\u548cmemory\u4f7f\u7528\u8f03\u591a<\/p>\n\n\n\n
\u7121automatic summarization,eigrp\u53ef\u4ee5
update\u7fa4\u64ad\u4f4d\u5740\u70baff02::a,eigrp\u70ba224.0.0.10
ps:
\u4e0d\u6703\u8981\u6c42\u76f8\u9130\u7684ipv6\u9130\u5c45\u4ecb\u9762\u70ba\u540c\u4e00\u500b\u7db2\u6bb5,\u4f46eigrp\u6703\u8981\u6c42
\u548ceigrp\u4e00\u6a23\u90fd\u6703\u901a\u544a\u4ecb\u9762\u4e0a\u4efb\u4f55\u76f4\u9023\u5b50\u7db2\u8def\uff0c\u4f46ipv6 eigrp\u4e0d\u6703\u901a\u544alink local\u548clocal route
<\/p>\n\n\n\n
hello\u8a0a\u606f\u4e3b\u8981\u662f\u5feb\u901f\u5075\u6e2c\u51fa\u65b0\u9032\u5165\u6216\u6b7b\u4ea1\u7684\u9130\u5c45
topology,neighbor,route table\u7684\u7522\u751f\u4e3b\u8981\u900f\u904ehello\u8a0a\u606f<\/p>\n\n\n\n
\u5728LAN\u4e2d\u9810\u8a2dhello timer 5\u79d2,hold timer 15\u79d2
\u82e5\u5728hold timer\u9810\u8a2d\u7684\u79d2\u6578\u5167\u6c92\u6536\u5230hello\u8a0a\u606f,\u5c31\u6703\u4e2d\u6b62\u9130\u5c45\u95dc\u4fc2,\u4e26\u91cd\u65b0\u641c\u5c0b\u4e00\u6b21\u9130\u5c45
\u82e5\u8981\u52a0\u5feb\u6536\u6582\u901f\u5ea6\uff0c\u53ef\u4ee5\u6e1b\u5c11hello\u548chold timer,\u5efa\u8b70\u662f1\u6bd43\u7684\u6bd4\u4f8b\u8f03\u5408\u7406
\u82e5hello timer\u9ad8\u65bchold timer,\u5247\u9130\u5c45\u95dc\u4fc2\u6703\u4e0d\u65b7\u7684\u4e2d\u6b62\u8207\u6062\u5fa9,\u800c\u9020\u6210route flapping(\u8def\u5f91\u8df3\u52d5)
ps:\u4f4e\u901fWAN\u4e2d,\u9810\u8a2dhello timer60\u79d2,hold timer180\u79d2<\/p>\n\n\n\n
1,\u6703\u6301\u7e8c\u5730multicast hello\u8a0a\u606f\u8207\u63a5\u6536,\u63a2\u7d22\u65b0\u9130\u5c45\u7684\u52a0\u5165\u6216\u5075\u6e2c\u9130\u5c45\u7684\u96e2\u958b\u6216\u6545\u969c
2,\u82e5\u767c\u73fe\u65b0\u9130\u5c45\u5247\u900f\u904ehello\u8a0a\u606f\u8207\u5b83\u5f62\u6210adjacency(\u7dca\u9130\u95dc\u4fc2)
ps:\u6210\u70ba\u9130\u5c45\u4e09\u500b\u689d\u4ef6:
\u30001\u6536\u5230hello\u6216ack,\u63db\u53e5\u8a71\u8aaa,\u9130\u5c45\u9593\u5728\u7db2\u8def\u4e0a\u7684\u8a0a\u606f\u8981\u80fd\u4e92\u76f8\u627a\u9054\u3000
\u30002as\u76f8\u540c,
\u30003\u76f8\u540c\u7684K\u503c
ps:ospf\u9650\u5236\u5404router\u8981\u6709\u76f8\u540chello\u9593\u9694\u548cdead\u9593\u9694\u662f\u6210\u70ba\u9130\u5c45\u5fc5\u8981\u689d\u4ef6,\u4f46eigrp\u7121\u6b64\u9650\u5236
3,adjacency\u5f62\u6210\u5f8c,\u624d\u53ef\u958b\u59cbfull update(\u5b8c\u6574\u66f4\u65b0)\u4ea4\u63db\u8def\u5f91\uff0c\u4ee5\u5ba3\u50b3\u4ed6\u5011\u7684\u6574\u500b\u8def\u5f91\u8868\u7d66\u53e6\u4e00\u90e8\u8def\u7531\u5668
\u5176\u6b65\u9a5f\u5982\u4e0b:
\u3000\u65b0\u52a0\u5165router\u9001\u51fahello\u5c01\u5305\u7d66\u76f8\u9130router
\u3000\u76f8\u9130router\u6536\u5230hello\u5c01\u5305\u5f8c\u56de\u50b3\u66f4\u65b0\u7684routing information\u7d66\u65b0\u52a0\u5165\u7684router
\u3000\u65b0\u52a0\u5165router\u6536\u5230\u5f8c\u56de\u61c9ack\u78ba\u8a8d\u8a0a\u606f,\u4e26\u5efa\u7acbtopology table,\u66f4\u65b0\u81ea\u5df1\u7684route table
\u3000\u65b0\u52a0\u5165router\u9001\u51farouting information\u7d66\u9130\u8fd1router
\u3000\u9130\u8fd1router\u6536\u5230\u5f8c\u56de\u61c9ack\u78ba\u8a8d\u8a0a\u606f
4,\u6240\u6709\u8def\u7531\u5668\u90fd\u5b78\u6703\u5f8c,\u505c\u6b62\u66f4\u65b0
5,\u82e5\u6709\u53c3\u6578\u767c\u751f\u8b8a\u5316\u6216\u9130\u5c45\u5931\u53bb\u9023\u7dda\u5247\u9032\u884cpartial update,\u82e5\u5931\u53bb\u9023\u7dda\u53c8\u6062\u5fa9\u5247\u9032\u884cfull update
ps:
\u7576\u767c\u73feneighbor\u6d88\u5931\u6642\uff0c\u52d5\u4f5c\u5982\u4e0b
\u30001\u89f8\u767cDUAL
\u30002\u8207\u8a72neighbor\u7684adjacency\u95dc\u4fc2\u88ab\u522a\u9664
\u30003\u522a\u9664\u5f9eneighbor\u5b78\u4f86\u7684route
\u30004\u82e5\u6709feasible route\uff0c\u5247\u4f7f\u7528\u3000<\/p>\n\n\n\n
\u5169\u53f0\u8a2d\u5099\u4f7f\u7528MD5\u6a5f\u5236\u4e92\u505a\u9a57\u8b49\u5f8c\uff0c\u624d\u53ef\u6210\u70baEIGRP\u9130\u5c45
\u53ef\u9632\u6b62DoS\u653b\u64ca
\u53ef\u9632\u6b62\u975e\u6cd5\u8a2d\u5099\u52a0\u5165224.0.0.10multi-address\u8207\u5408\u6cd5\u9130\u5c45\u5efa\u7acb\u95dc\u4fc2 <\/p>\n\n\n\n
neighbor table(\u9130\u5c45\u8868):\u8a18\u9304\u9130\u5c45\u76f8\u95dc\u8cc7\u8a0a,\u5132\u5b58\u5728ram\u4e2d,\u5404PDM\u5404\u6709\u4e00\u500b\u9130\u5c45\u8868
\u3000\u8def\u7531\u5668\u6703\u5229\u7528\u5e8f\u865f\u4f86\u5339\u914d\u66f4\u65b0\u5c01\u5305\u7684\u78ba\u8a8d\u865f\u78bc,\u4e14\u6703\u8a18\u9304\u5f9e\u9130\u5c45\u63a5\u6536\u7684\u6700\u5f8c\u4e00\u500b\u5e8f\u865f,\u5373\u53ef\u5075\u6e2c\u5230\u5931\u5e8f\u7684\u5c01\u5305
topology table(\u62d3\u6a38\u8868):\u8a18\u9304\u9130\u5c45\u6240\u5ba3\u50b3\u7684\u76f8\u95dc\u8cc7\u8a0a,\u4ee5\u53ca\u5404\u8def\u5f91,\u5132\u5b58\u5728ram\u4e2d,DUAL\u4f9d\u6b64\u505a\u904b\u7b97
\u3000<\/strong>topology\u8868\u5167\u542b\u76f8\u95dc\u8cc7\u8a0a\u5305\u62ecFD,RD,sucessor,feasible successor
route table,\u5132\u5b58\u5728ram\u4e2d,\u6703\u6839\u64datopology table\u6c7a\u5b9aroute table\u7684\u8def\u5f91<\/p>\n\n\n\n
FD(feasible distance,\u53ef\u884c\u8ddd\u96e2):
\u3000\u6240\u6709\u7dda\u8def\u4e2d\u6700\u4f73metric weights(\u8861\u91cf\u6307\u6a19)\u7684\u8def\u5f91,\u503c\u8d8a\u4f4e\u8868\u793a\u8a72\u8def\u5f91\u8d8a\u597d
RD(reported distance,\u5831\u544a\u8ddd\u96e2)\/AD(advertised distance,\u901a\u544a\u8ddd\u96e2):
\u3000\u7531\u67d0\u9130\u5c45\u5831\u544a\u7684\u8def\u5f91,\u4e5f\u5c31\u662f\u8a72\u9130\u5c45\u7684\u8def\u5f91\u8868\u8861\u91cf\u6307\u6a19
EIGRP\u7684metric weights(\u6b0a\u503c)\u516c\u5f0f <\/strong>
=256*(
k1(10^7\/bandwidth)+
k2(10^7\/bandwidth)\/(256-load) +
k3(delay)+
k5\/(reliability+k4)
)
\u5176\u4e2d,
bandwidth,load,delay,reliability\u70ba\u6b0a\u503c,\u6703\u4f7f\u7528update\u8a0a\u606f\u4e0a\u4e4b\u53c3\u6578
k1-k5\u70bak\u503c,\u4e14\u70ba0-255\u6574\u6578,\u9810\u8a2dk1,3=1,k2,4,5=0
\u56e0\u6b64\u7c21\u5316\u5f8c\u516c\u5f0f\u5982\u4e0b
=256*( 10^7\/bandwidth +delay)
ps:
\u5728\u8abf\u6574\u6b0a\u503c\u6642,\u5efa\u8b70\u4e0d\u8981\u4f7f\u7528bandwidth,\u56e0\u70ba\u5f88\u591a\u5354\u5b9a\u6703\u4ee5\u983b\u5bec\u505a\u70ba\u91cd\u8981\u53c3\u6578.\u5efa\u8b70\u4f7f\u7528delay,\u5f71\u97ff\u8f03\u5c0f
ps:metric\u4ee532bit\u8868\u793a<\/p>\n\n\n\n
EIGRP\u8def\u5f91\u53ef\u5206\u4ee5\u4e0b\u5169\u7a2e
successor(\u5f8c\u7e7c\u8005):
\u3000\u4e3b\u8981\u7684\u8def\u5f91,\u8a72\u8def\u5f91\u4e5f\u7a31\u70basucessor route(\u5f8c\u7e7c\u8005\u8def\u5f91),\u800c\u8a72\u8def\u5f91\u7684\u4e0b\u4e00\u7ad9\u5247\u7a31\u70basuceessor
\u3000\u6240\u6709\u8def\u5f91\u4e2d\uff0cFD\u6700\u5c0f\u7684\u8def\u5f91,
\u3000sucessor\u6703\u653e\u9032route table\u4e2d,\u6b64\u8def\u5f91\u6703\u88ab\u7528\u4f86\u8f49\u9001\u4ea4\u901a
\u3000successor\u6703\u51fa\u73fe\u5728route table\u548ctopology table
feasible successor(\u53ef\u884c\u5f8c\u7e7c\u8005):
\u3000successor\u7684backup route(\u5099\u63f4\u8def\u5f91),\u8a72\u8def\u5f91\u4e5f\u7a31\u70bafeasible successor route,\u800c\u9019\u4e9b\u8def\u5f91\u7684\u4e0b\u4e00\u7ad9\u5247\u7a31\u70bafeasible sucessor
\u30001\u4e0d\u662fFD\u6700\u5c0f\u7684\u8def\u5f91\uff0c2\u8a72\u8def\u5f91\u7684RD\u5c0f\u65bc(\u4e5f\u4e0d\u53ef\u7b49\u65bc)successor\u7684FD
\u3000\u6700\u591a\u53ef\u4fdd\u75596\u689d,\u5b58\u5728topology table\u3000\u3000
\u3000\u7576\u6c92\u6709feasible successor\u53ef\u7528\u6642\uff0c\u5247\u8a72\u8def\u5f91\u6703\u5f9epassive\u8b8a\u6210active\uff0c\u4e26\u57f7\u884cDUAL
ps:
EIGRP\u53ea\u6703\u641c\u96c6loop-free route(\u7121\u8ff4\u5708\u7684\u8def\u5f91)
<\/p>\n\n\n\n
\u7528\u4f86\u9078\u64c7\u8207\u7dad\u8b77\u6bcf\u500b\u9060\u7aef\u7db2\u8def\u7684\u6700\u4f73\u8def\u5f91
\u4f7f\u5f97eigrp\u6210\u70baconverge\u6642\u9593\u6700\u77ed\u7684\u4e00\u7a2e,
\u4e3b\u8981\u4f7f\u75282\u65b9\u6cd5
\u30001\u6700\u4f73\u8def\u5f91\u6545\u969c\u4e0d\u7528\u91cd\u7b97,\u76f4\u63a5\u4f7f\u7528\u5099\u7de9\u7dda\u8def
\u30002\u5099\u63f4\u7dda\u8def\u5c1a\u672a\u6e96\u5099\u4ecd\u8981\u91cd\u7b97,\u4f7f\u7528multicast\u8acb\u9130\u5c45\u5e6b\u5fd9\u627e\u5c0b<\/p>\n\n\n\n
1router\u50b3\u9001query\u8a0a\u606f\u5230\u6240\u6709\u9130\u5c45\uff0c\u8a62\u554f\u662f\u5426\u6709\u9023\u5230\u8a72\u76ee\u5730\u4e4broute\uff0c\u4e26\u7b49\u5f85\u56de\u8986\u76f4\u5230active timer\u6b780
2\u82e5\u9130\u5c45\u6709loop-free route\u5247\u4ee5reply\u8a0a\u606f\u56de\u8986
\u82e5\u9130\u5c45\u6c92\u6709\uff0c\u5247\u50b3\u9001query\u8a0a\u606f\u5230\u5176\u4ed6\u9130\u5c45\uff0c\u4e26\u7b49\u5f85\u5176\u4ed6\u9130\u5c45\u50b3\u56dereply\u8a0a\u606f\u76f4\u5230active timer\u6b780\u3000
3\u4e0d\u65b7\u91cd\u8986\u6b65\u9a5f2
4\u7576router\u6536\u5230reply\u8a0a\u606f\u6642\uff0c\u6709\u5169\u60c5\u6cc1
\u30001\u8a72reply\u662f\u9130\u5c45query\u7684,\u5247\u50b3\u9001\u8a72reply\u8a0a\u606f\u7d66\u4efb\u4e00\u9130\u5c45
\u30002\u8a72reply\u662f\u81ea\u5df1query\u7684,\u5247\u53ef\u958b\u59cb\u4f7f\u7528\u8a72loop-free route
ps:
\u627e\u5c0b\u6b65\u9a5f\u6240\u7528\u7684\u8a0a\u606f\u90fd\u6703\u5728\u4ee5ack\u8a0a\u606f\u9032\u884c\u78ba\u8a8d
ps:
\u5728active timer\u7684\u6642\u9593\u5167\uff0c\u5176\u8def\u5f91\u7a31\u70baSIA(stuck-in-active,\u9677\u5165\u4e3b\u52d5\u72c0\u614b)
\u5728active timer\u904e\u4e86\u4e00\u534a\u7684\u6642\u9593\u5f8c\uff0crouter\u6703\u9001\u51faSIA-query\u8a0a\u606f\uff0c\u82e5\u9130\u5c45\u6c92\u6709\u56de\u8986SIA-reply\u8a0a\u606f\u5247\u4e2d\u6b62\u9130\u5c45\u95dc\u4fc2
ps:
\u5728\u767c\u751f\u7570\u5e38\u7684\u60c5\u6cc1\u4e0b,
\u7db2\u8def\u51fa\u73fe\u5927\u91cf\u7684SIA\u6642,\u53ef\u80fd\u662fCPU\u6216memory\u592a\u5fd9\u5c0e\u81f4\u4f86\u4e0d\u53ca\u8655\u7406\u9019\u4e9bquery
\u67d0\u53f0router\u51fa\u73fe\u5927\u91cf\u7684SIA\u6642,\u53ef\u80fd\u662fquery\u548creply\u907a\u5931,\u6216\u7dda\u8def\u7570\u5e38 ex:unidirectional link<\/p>\n\n\n\n
\u5728\u5927\u7db2\u8def\u7b49\u7279\u5b9a\u60c5\u6cc1\u4e0b\u6703\u56e0query\u9020\u6210\u8def\u5f91\u6536\u6582\u7de9\u6162
\u4e3b\u8981\u6709\u5169\u7a2e\u89e3\u6c7a\u65b9\u5f0f
1.\u8a2d\u5b9astub router:
\u3000stub router\u6703\u544a\u8a22\u975estub router\u4e0d\u8981\u50b3\u9001query\u7d66stub router,\u7528\u4ee5\u9650\u5236query\u7684\u6578\u91cf
\u3000stub router\u4e0d\u6703\u53bbquery\u5176\u4ed6router
\u3000stub router\u4e3b\u8981\u8a2d\u5b9a\u5728remote site router
\u3000\u61c9\u7528\uff1a\u5728hub-spoke\u67b6\u69cb\u4e0b\uff0chub router\u6703\u9023\u63a5\u591a\u53f0spoke router\uff0c\u5c31\u53ef\u4ee5\u5728spoke router\u4e0a\u8a2d\u5b9astub\u4ee5\u9650\u5236query\u6578\u91cf\u3000
2.\u8a2d\u5b9asummary routes
\u7576router\u6536\u5230\u9130\u5c45\u7684query\u5f8c\uff0c\u82e5query\u8981\u627e\u7684route\u5305\u542b\u5728summary route\uff0c\u5247router\u6703\u99ac\u4e0areply\uff0c\u4e0d\u6703\u5728query\u5230\u5176\u4ed6\u9130\u5c45
\u3000<\/p>\n\n\n\n
hello:\u7528\u4f86\u63a2\u7d22\u9130\u5c45\u3000
ack(acknowledgment): 1\u7528\u4f86\u78ba\u8a8d\u6536\u5230\u66f4\u65b0\u7684\u5c01\u5305,topology\u4ea4\u63db\u6642\u6703\u7528\u5230
update: \u7576\u767c\u751f\u8b8a\u52d5\u6642\u7528\u4f86\u50b3\u905e\u8cc7\u8a0a\uff0c\u50cf\u662frouter\u767c\u73fe\u65b0\u9130\u5c45,\u5075\u6e2c\u5230topology\u6539\u8b8a(\u6703\u5305\u542btopology\u8cc7\u8a0a,\u5728topology\u4ea4\u63db\u6642\u6703\u7528\u5230)
query: \u9700\u89811\u500b\u6216\u6240\u6709\u9130\u5c45\u7279\u5b9a\u8cc7\u8a0a\u6642\u6703\u7528\u5230
reply: \u56de\u7b54query\u5c01\u5305\u6709loop-free route
ps:\u9664hello,ack\u5916,\u5176\u4ed63\u500b\u90fd\u4f7f\u7528RTP\u50b3\u8f38<\/p>\n\n\n\n
1.prefix\/prefix\u9577\u5ea6, ex:10.1.1.0\/24
2.Metric components(\u6b0a\u503c):bandwidth, delay, reliability, load
3.Nonmetric items:hop count,MTU
UPDATE\u8a0a\u606f\u7684\u8b8a\u5316<\/strong>
update\u8a0a\u606f\u7d93\u904e\u4e0b\u4e00\u500b\u4ecb\u9762\u6642,\u4ee5\u4e0b\u5c6c\u6027\u6703\u6539\u8b8a
bandwidth=\u9078\u64c7\u6240\u6709\u4ecb\u9762\u4e2d\u983b\u5bec\u6700\u4f4e\u7684\u503c\u505a\u70ba\u8a72\u5c6c\u6027\u503c
delay=\u5c07\u6240\u6709\u7d93\u904e\u7684\u4ecb\u9762\u4e4bdelay\u503c\u52a0\u7e3d
hop count=\u6bcf\u7d93\u904e\u4e00\u500b\u4ecb\u9762\u8981\u52a01<\/p>\n\n\n\n
cisco\u5c08\u5c6c\u7684\u50b3\u8f38\u5c64\u5354\u5b9a,\u7528\u4f86\u7ba1\u7406eigrp\u8def\u7531\u5668\u7684\u901a\u8a0a
\u63d0\u4f9b\u53ef\u9760\u7684\u6a5f\u5236\u4f86\u4f9d\u5e8f\u5730\u50b3\u9001\u8a0a\u606f,\u53ef\u9760\u6027\u662f\u6b64\u5354\u5b9a\u7684\u91cd\u8981\u8003\u91cf
\u4e5f\u63d0\u4f9b\u4e0d\u53ef\u9760\u7684\u6a5f\u5236,\u5c31\u50cfhello\u8a0a\u606f,\u983b\u7e41\u4e14\u61c9\u4fdd\u6301\u5f88\u5c0f
\u5fb5\u7528\u591a\u9ede\u50b3\u64ad\u8207\u55ae\u9ede\u50b3\u64ad\u4f86\u5feb\u901f\u50b3\u9001\u66f4\u65b0
ps:multicast\u7d66\u9130\u5c45\u82e5\u7121\u56de\u61c9,\u6703\u7528unicast\u6700\u591a16\u6b21\u5167\u82e5\u7121\u56de\u61c9,\u5ba3\u544a\u9130\u5c45\u6d88\u5931
ps:\u82e5eigrp\u7684\u901a\u8a0a\u8cc7\u6599\u6709\u554f\u984c\u53ef\u80fd\u6703\u5c0e\u81f4\u8cc7\u6599\u5eab\u640d\u6bc0,\u56e0\u6b64\u9700\u7528\u53ef\u9760\u7684\u5354\u5b9a <\/p>\n","protected":false},"excerpt":{"rendered":"