{"id":1580,"date":"2025-11-18T01:49:34","date_gmt":"2025-11-17T16:49:34","guid":{"rendered":"https:\/\/mylifeisbeautiful555.net\/?page_id=1580"},"modified":"2025-11-18T01:49:34","modified_gmt":"2025-11-17T16:49:34","slug":"ibgp%e3%81%ae%e7%89%b9%e5%be%b4%ef%bc%88%e3%83%ab%e3%83%bc%e3%83%97%e3%83%90%e3%83%83%e3%82%af%e3%81%a7%e3%83%8d%e3%82%a4%e3%83%90%e3%83%bc%e3%82%92%e8%b2%bc%e3%82%8b%ef%bc%89juniper","status":"publish","type":"page","link":"https:\/\/mylifeisbeautiful555.net\/?page_id=1580","title":{"rendered":"iBGP\u306e\u7279\u5fb4\uff08\u30eb\u30fc\u30d7\u30d0\u30c3\u30af\u3067\u30cd\u30a4\u30d0\u30fc\u3092\u8cbc\u308b\uff09(juniper)"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u524d\u63d0<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30eb\u30fc\u30bfA \u3068 \u30eb\u30fc\u30bfB \u304c BGP \u3092\u5f35\u308b<\/li>\n\n\n\n<li>\u305d\u308c\u305e\u308c loopback0 \u306eIP\u3092BGP\u306eneighbor\u306b\u4f7f\u3044\u305f\u3044<\/li>\n\n\n\n<li>IGP(OSPF \u306a\u3069) \u3067 loopback \u306e\u5230\u9054\u6027\u306f\u78ba\u4fdd\u3057\u3066\u3044\u308b\u3053\u3068<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">\u2460 <strong>Loopback (lo0) \u306b\u30a2\u30c9\u30ec\u30b9\u3092\u8a2d\u5b9a<\/strong><\/h1>\n\n\n\n<p><code>set interfaces lo0 unit 0 family inet address 10.1.1.1\/32<\/code><br><code>set interfaces lo0 unit 0 family inet address 10.2.2.2\/32<\/code><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u2461 <strong>IGP(OSPF)\u3067Loopback\u306e\u7d4c\u8def\u3092\u30a2\u30c9\u30d0\u30bf\u30a4\u30ba<\/strong><\/h1>\n\n\n\n<p>BGP\u306e\u30cd\u30a4\u30d0\u30fcIP\u304cIGP\u3067\u5230\u9054\u3067\u304d\u306a\u3044\u3068\u7d76\u5bfe\u306b\u5f35\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f8b\uff1aOSPF<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>set protocols ospf area 0 interface lo0.0 passive<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">\u2462 <strong>BGP\u30b0\u30eb\u30fc\u30d7\u3067neighbor\u306bLoopback\u306eIP\u3092\u6307\u5b9a<\/strong><\/h1>\n\n\n\n<p>Juniper\u3067\u306f Cisco \u3067\u3044\u3046 <code>update-source loopback0<\/code> \u306f<br><strong>local-address \u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u6307\u5b9a<\/strong>\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>IBGP \u306e\u5834\u5408\uff08\u540c\u4e00AS\u306e\u5834\u5408\uff09<\/strong><\/h1>\n\n\n\n<pre class=\"wp-block-code\"><code>set protocols bgp group IBGP type internal\nset protocols bgp group IBGP local-address 10.1.1.1\nset protocols bgp group IBGP neighbor 10.2.2.2 peer-as 65000\n<\/code><\/pre>\n\n\n\n<p>\u203b IBGP \u306f\u30de\u30eb\u30c1\u30db\u30c3\u30d7\u4e0d\u8981<br>\uff08IGP \u3067\u30eb\u30fc\u30d7\u30d0\u30c3\u30af\u540c\u58eb\u306e\u5230\u9054\u6027\u304c\u3042\u308b\u305f\u3081\uff09<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>EBGP \u306e\u5834\u5408\uff08\u7570\u306a\u308bAS\u3067 Loopback \u3092\u4f7f\u3046\u5834\u5408\uff09<\/strong><\/h1>\n\n\n\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8 EBGP \u306f TTL=1 \u306e\u305f\u3081<br><strong>Cisco \u306e &#8220;ebgp-multihop&#8221; \u3068\u540c\u7b49\u306e\u8a2d\u5b9a<\/strong> \u304c\u5fc5\u8981\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f8b\uff1aEBGP\u30de\u30eb\u30c1\u30db\u30c3\u30d7\u8a2d\u5b9a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>set protocols bgp group EBGP type external\nset protocols bgp group EBGP local-address 10.1.1.1\nset protocols bgp group EBGP neighbor 10.2.2.2 peer-as 65001\nset protocols bgp group EBGP multihop ttl 2\n<\/code><\/pre>\n\n\n\n<p>\u203b TTL \u306f\u74b0\u5883\u306b\u5fdc\u3058\u3066 2\uff5e255 \u3092\u8a2d\u5b9a<br>\u203b IGP \u3067\u76f8\u624b\u306e Loopback \u304c\u898b\u3048\u3066\u3044\u308b\u3053\u3068\u304c\u5fc5\u9808<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u2463 <strong>BGP\u304c\u4e0a\u304c\u3089\u306a\u3044\u5834\u5408\u306e\u78ba\u8a8d<\/strong><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u25cf 1. IGP\u3067\u5230\u9054\u3067\u304d\u3066\u3044\u308b\u304b\uff1f<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>show route 10.2.2.2\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u25cf 2. local-address \u304c\u6b63\u3057\u3044\u304b\uff1f<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>show configuration protocols bgp | display set\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u25cf 3. \u30de\u30eb\u30c1\u30db\u30c3\u30d7\u4e0d\u8db3\uff08EBGP\u306e\u307f\uff09<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>set protocols bgp group EBGP multihop ttl 5<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u25cf 4. lo0\u30d5\u30a3\u30eb\u30bf\u3067\u62d2\u5426\u3057\u3066\u3044\u306a\u3044\u304b\uff1f<\/h2>\n\n\n\n<p>Junos\u306f lo0 \u306b\u30d5\u30a3\u30eb\u30bf\u3092\u4ed8\u3051\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081<br>BGP(TCP 179) \u304c block \u3055\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u3042\u308a\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>\u8a2d\u5b9a\u4f8b\uff08IBGP\uff1a\u540c\u4e00AS\u3067Loopback\u540c\u58eb\u3067BGP\uff09<\/strong><\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">\u25bc set\u5f62\u5f0f<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>set interfaces lo0 unit 0 family inet address 10.1.1.1\/32\nset protocols ospf area 0.0.0.0 interface lo0.0 passive\n\nset protocols bgp group IBGP type internal\nset protocols bgp group IBGP local-address 10.1.1.1\nset protocols bgp group IBGP neighbor 10.2.2.2 peer-as 65000\n<\/code><\/pre>\n\n\n\n<p>\u203b \u30eb\u30fc\u30bfB\u5074\u306f <code>.1<\/code> \u3068 <code>.2<\/code> \u3092\u9006\u306b\u3057\u305f\u3060\u3051\u306e\u8a2d\u5b9a\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>\u8a2d\u5b9a\u4f8b\uff08EBGP + Loopback\uff1a\u7570\u306a\u308bAS\u3067Loopback\u540c\u58eb\u3067BGP\uff09<\/strong><\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">\u25bc set\u5f62\u5f0f<\/h3>\n\n\n\n<p>Cisco\u3067\u3044\u3046 ebgp-multihop \u3092\u542b\u3080<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>set interfaces lo0 unit 0 family inet address 10.1.1.1\/32\nset protocols ospf area 0.0.0.0 interface lo0.0 passive\n\nset protocols bgp group EBGP type external\nset protocols bgp group EBGP local-address 10.1.1.1\nset protocols bgp group EBGP multihop ttl 5\nset protocols bgp group EBGP neighbor 10.2.2.2 peer-as 65001<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">\u88dc\u8db3<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">\u25cf IBGP\u3067\u306f multihop \u306f\u4e0d\u8981<\/h3>\n\n\n\n<p>IGP(OSPF)\u304c Loopback \u3092\u5b66\u7fd2\u3057\u3066\u3044\u308c\u3070 OK\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25cf EBGP\u3067\u306f\u5fc5\u305a multihop \u304c\u5fc5\u8981<\/h3>\n\n\n\n<p>EBGP\u306f\u30c7\u30d5\u30a9\u30eb\u30c8 TTL=1 \u306e\u305f\u3081\u3001Loopback \u540c\u58eb\u3067\u306f TTL\u304c\u8db3\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u63d0 \u2460 Loopback (lo0) \u306b\u30a2\u30c9\u30ec\u30b9\u3092\u8a2d\u5b9a set interfaces lo0 unit 0 family inet address 10.1.1.1\/32set interfaces lo0 unit  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1580","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages\/1580","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1580"}],"version-history":[{"count":2,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages\/1580\/revisions"}],"predecessor-version":[{"id":1593,"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=\/wp\/v2\/pages\/1580\/revisions\/1593"}],"wp:attachment":[{"href":"https:\/\/mylifeisbeautiful555.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}