{"id":137,"date":"2017-09-14T21:24:53","date_gmt":"2017-09-14T19:24:53","guid":{"rendered":"http:\/\/www.quisted.net\/?p=137"},"modified":"2017-09-14T21:24:53","modified_gmt":"2017-09-14T19:24:53","slug":"ospf-default-routing","status":"publish","type":"post","link":"https:\/\/www.quisted.net\/index.php\/2017\/09\/14\/ospf-default-routing\/","title":{"rendered":"OSPF Default Routing"},"content":{"rendered":"<ul>\n<li>Create a default route into a specific area<\/li>\n<li>Create a default route into the entire OSPF domain<\/li>\n<li>Default-information originate\n<ul>\n<li>Creates a default route into OSPF, external Type 2 route, using a Type 5 LSA with metric 20<\/li>\n<li><em>default-information originate <span style=\"color: #339966;\">(always)<\/span> <span style=\"color: #ff6600;\">metric 30<\/span> <span style=\"color: #3366ff;\">metric-type 1<\/span> <span style=\"color: #ff00ff;\">route-map NAME<\/span><br \/>\n<\/em><\/p>\n<ul>\n<li>Default metric <strong>20<\/strong><\/li>\n<li>Default metric-type <strong>2<\/strong>\n<ul>\n<li>metric-type <strong>1<\/strong> cost <strong>can<\/strong> be changed<strong><br \/>\n<\/strong><\/li>\n<li>metric-type <strong>2<\/strong> cost <strong>can&#8217;t<\/strong> be changed<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>The metric-type defines LSA is Type 1 External or Type 2 External (default)<\/li>\n<li>Route-map is used for tracking networks. If Route-map condition is met, default route is advertized.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><!--more--><\/p>\n<p>Gateway of last resort is 2.2.2.2 to network 0.0.0.0<\/p>\n<pre>1.0.0.0\/32 is subnetted, 2 subnets\nO IA 1.1.1.1 [110\/21] via 2.2.2.2, 00:00:06, FastEthernet0\/0\nO IA 1.1.0.1 [110\/21] via 2.2.2.2, 00:00:06, FastEthernet0\/0\n2.0.0.0\/24 is subnetted, 1 subnets\nC 2.2.2.0 is directly connected, FastEthernet0\/0\n3.0.0.0\/24 is subnetted, 1 subnets\nC 3.3.3.0 is directly connected, Loopback1\n20.0.0.0\/32 is subnetted, 1 subnets\nO IA 20.20.20.20 [110\/11] via 2.2.2.2, 00:00:06, FastEthernet0\/0\n10.0.0.0\/24 is subnetted, 1 subnets\nO IA 10.10.10.0 [110\/20] via 2.2.2.2, 00:00:08, FastEthernet0\/0\n<span style=\"color: #ff6600;\"><strong>O*E2 0.0.0.0\/0 [110\/1] via 2.2.2.2, 00:00:08, FastEthernet0\/0<\/strong><\/span>\nR3#\n\n<\/pre>\n<h3>Default route to Stub Areas<\/h3>\n<ul>\n<li>Use the default route instead of more specific<\/li>\n<li>The ABR injects the default route into an area.<\/li>\n<li>ABR creates a default route using a Type 3 LSA and floods that into the stub area<\/li>\n<li>ABR <strong>do not flood <\/strong>Type 5 LSA into the stub area<\/li>\n<li>ABR <strong>do not <\/strong><strong>flood <\/strong>any other Type 3 LSA into the stub area<\/li>\n<li>Default route has a metric of 1<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Create a default route into a specific area Create a default route into the entire OSPF domain Default-information originate Creates a default route into OSPF, external Type 2 route, using a Type 5 LSA with metric 20 default-information originate (always) metric 30 metric-type 1 route-map NAME Default metric 20 Default metric-type 2 metric-type 1 cost [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[14,8],"tags":[],"class_list":["post-137","post","type-post","status-publish","format-standard","hentry","category-ospf","category-route"],"_links":{"self":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/comments?post=137"}],"version-history":[{"count":0,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/137\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/media?parent=137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/categories?post=137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/tags?post=137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}