{"id":2871,"date":"2020-12-29T12:25:26","date_gmt":"2020-12-29T20:25:26","guid":{"rendered":"https:\/\/SUMMALAI.COM\/?p=2871"},"modified":"2020-12-29T12:27:45","modified_gmt":"2020-12-29T20:27:45","slug":"ospf-link-state-advertisement-lsa-types","status":"publish","type":"post","link":"https:\/\/SUMMALAI.COM\/?p=2871","title":{"rendered":"OSPF Link State Advertisement (LSA) Types"},"content":{"rendered":"\n<p>In this article, we\u2019ll be diving deeper to analyze all eleven&nbsp;OSPF LSA Types&nbsp;using network diagrams and examples to help understand when each&nbsp;<strong>LSA type<\/strong>&nbsp;is used and how they keep the OSPF network updated.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPES &#8211; QUICK OVERVIEW<\/h3>\n\n\n\n<p>Before we begin, let\u2019s take a quick look at the different type of OSPF LSA packets we\u2019ll cover:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>LSA Type 1: OSPF Router LSA<\/li><li>LSA Type 2: OSPF Network LSA<\/li><li>LSA Type 3: OSPF Summary LSA<\/li><li>LSA Type 4: OSPF ASBR Summary LSA<\/li><li>LSA Type 5: OSPF ASBR External LSA<\/li><li>LSA Type 6: OSPF Group Membership LSA<\/li><li>LSA Type 7: OSPF Not So Stubby Area (NSSA) External LSA<\/li><li>LSA Type 8: OSPF External Attributes LSA (OSPFv2) \/ Link Local LSA (OSPFv3)<\/li><li>LSA Type 9: OSPF Link Scope Opaque (OSPFv2) \/ Intra Area Prefix LSA (OSPFv3)<\/li><li>LSA Type 10: OSPF Area Scope Opaque LSA<\/li><li>LSA Type 11:OSPF AS (Autonomous System) Scope Opaque LSA<\/li><\/ul>\n\n\n\n<p>The&nbsp;LSA payload&nbsp;varies in size according to the LSA type and the information it includes. The diagram below clearly shows how LSAs are contained within LSUs:<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-1 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img fetchpriority=\"high\" decoding=\"async\" width=\"780\" height=\"354\" src=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T0.png\" alt=\"\" data-id=\"2872\" data-full-url=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T0.png\" data-link=\"https:\/\/SUMMALAI.COM\/?attachment_id=2872\" class=\"wp-image-2872\" srcset=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T0.png 780w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T0-300x136.png 300w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T0-768x349.png 768w\" sizes=\"(max-width: 780px) 100vw, 780px\" \/><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Figure 1. LSA Types contained within an OSPF LSU packet<\/p>\n\n\n\n<p>As mentioned, OSPF currently supports 11 types of LSAs. Each LSA is used within specific boundaries of an OSPF network.<\/p>\n\n\n\n<p>OSPF concepts, including router roles such as&nbsp;<strong>Designated Router<\/strong>&nbsp;(<strong>DR<\/strong>),&nbsp;<strong>Area Border Router<\/strong>&nbsp;(<strong>ABR<\/strong>),&nbsp;<strong>Autonomous System Border Router<\/strong>&nbsp;(<strong>ASBR<\/strong>),&nbsp;<strong>OSPF Areas<\/strong>&nbsp;and more, are analyzed in great depth in our article&nbsp;OSPF Basic Concepts \u2013 OSPF Areas \u2013 Router Roles. This article assumes the reader has a good understanding of&nbsp;basic OSPF theory&nbsp;and is comfortable with OSPF concepts.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 1 \u2013 OSPF ROUTER LSA<\/h3>\n\n\n\n<p><strong>LSA Type 1<\/strong>&nbsp;(<strong>Router LSA<\/strong>) packets are sent between routers within the same area of origin and do not leave the area. An OSPF router uses&nbsp;<strong>LSA Type 1<\/strong>&nbsp;packets to describe its own interfaces but also carries information about its neighbours to adjacent routers in the same area.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-1 is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" width=\"597\" height=\"253\" src=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T1.png\" alt=\"\" data-id=\"2873\" data-full-url=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T1.png\" data-link=\"https:\/\/SUMMALAI.COM\/?attachment_id=2873\" class=\"wp-image-2873\" srcset=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T1.png 597w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T1-300x127.png 300w\" sizes=\"(max-width: 597px) 100vw, 597px\" \/><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Figure 2. LSA Type 1 Packets exchanged between OSPF routers within the same area<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 2 \u2013 OSPF NETWORK LSA<\/h3>\n\n\n\n<p><strong>LSA Type 2<\/strong>&nbsp;(<strong>Network LSA<\/strong>) packets are generated by the&nbsp;<strong>Designated Router<\/strong>&nbsp;(<strong>DR<\/strong>) to describe all routers connected to its segment directly.&nbsp;<strong>LSA Type 2<\/strong>&nbsp;packets are flooded between neighbors in the same area of origin and remain within that area.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-1 is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" width=\"598\" height=\"363\" src=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T2.png\" alt=\"\" data-id=\"2874\" data-full-url=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T2.png\" data-link=\"https:\/\/SUMMALAI.COM\/?attachment_id=2874\" class=\"wp-image-2874\" srcset=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T2.png 598w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T2-300x182.png 300w\" sizes=\"(max-width: 598px) 100vw, 598px\" \/><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Figure 3. LSA Type 2 Packets exchanged between OSPF DR and neighbour routers<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 3 \u2013 OSPF SUMMARY LSA<\/h3>\n\n\n\n<p><strong>LSA Type 3<\/strong>&nbsp;(<strong>Summary LSA<\/strong>) packets are generated by&nbsp;Area Border Routers&nbsp;(<strong>ABR<\/strong>) to summarize its directly connected area and advertise inter-area router information to other areas the&nbsp;<strong>ABR<\/strong>&nbsp;is connected to, with the use of a summary prefix (e.g 192.168.0.0\/22).&nbsp;<strong>LSA Type 3<\/strong>&nbsp;packets are flooded to multiple areas throughout the network and help with OSPF\u2019s scalability with the use of summary prefixes.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-1 wp-block-gallery-4 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"995\" height=\"257\" src=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T3.png\" alt=\"\" data-id=\"2875\" data-full-url=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T3.png\" data-link=\"https:\/\/SUMMALAI.COM\/?attachment_id=2875\" class=\"wp-image-2875\" srcset=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T3.png 995w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T3-300x77.png 300w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/T3-768x198.png 768w\" sizes=\"(max-width: 995px) 100vw, 995px\" \/><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Figure 4. LSA Type 3 &#8211; An OSPF ABR router advertises the summarized route 192.168.2.0\/24 to Area 0<\/p>\n\n\n\n<p>Looking at the diagram above,&nbsp;<strong>ABR<\/strong>&nbsp;router&nbsp;<strong>R2<\/strong>&nbsp;creates a&nbsp;<strong>Type 3 Summary LSA<\/strong>&nbsp;and floods it into&nbsp;<strong>Area 0<\/strong>. In a similar way,&nbsp;<strong>ABR<\/strong>&nbsp;router&nbsp;<strong>R3<\/strong>&nbsp;creates a&nbsp;<strong>Type 3 Summary LSA<\/strong>&nbsp;and floods it into&nbsp;<strong>Area 2<\/strong>.&nbsp;<strong>Type 3 Summary LSAs<\/strong>&nbsp;appear as&nbsp;<strong>O IA<\/strong>&nbsp;entries in the router routing table.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 4 \u2013 OSPF ASBR SUMMARY LSA<\/h3>\n\n\n\n<p><strong>LSA Type 4<\/strong>&nbsp;(<strong>ASBR Summary LSA<\/strong>) packets are the LSAs that advertise the presence of an&nbsp;Autonomous System Border Router&nbsp;(<strong>ASBR<\/strong>) to other areas. In the example below when&nbsp;<strong>R2<\/strong>&nbsp;(<strong>ABR<\/strong>) receives the&nbsp;<strong>LSA Type 1<\/strong>&nbsp;packet from&nbsp;<strong>R1<\/strong>&nbsp;it will create a&nbsp;<strong>LSA Type 4<\/strong>&nbsp;(<strong>Summary ASBR LSA<\/strong>) packet, which advertises the&nbsp;<strong>ASBR<\/strong>&nbsp;route received from&nbsp;<strong>Area 1<\/strong>, and inject it into&nbsp;<strong>Area 0<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-1 wp-block-gallery-5 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1023\" height=\"234\" src=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t4.png\" alt=\"\" data-id=\"2876\" data-full-url=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t4.png\" data-link=\"https:\/\/SUMMALAI.COM\/?attachment_id=2876\" class=\"wp-image-2876\" srcset=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t4.png 1023w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t4-300x69.png 300w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t4-768x176.png 768w\" sizes=\"(max-width: 1023px) 100vw, 1023px\" \/><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Figure 5. LSA Type 4 packets injected into Area 0 &amp; 2 by the R2 ABR and R3 ABR<\/p>\n\n\n\n<p>While&nbsp;<strong>LSA Type 4<\/strong>&nbsp;packets are used by&nbsp;<strong>ABRs<\/strong>&nbsp;to advertise the&nbsp;<strong>ASBR<\/strong>&nbsp;route through their areas, it will not be used by the&nbsp;<strong>ASBR<\/strong>&nbsp;itself within its local area (<strong>Area 1<\/strong>);&nbsp;<strong>ASBR<\/strong>&nbsp;uses&nbsp;<strong>LSA Type 1<\/strong>&nbsp;to inform its neighbors (<strong>R2<\/strong>&nbsp;in this case) within its networks.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 5 \u2013 OSPF ASBR EXTERNAL LSA<\/h3>\n\n\n\n<p><strong>LSA Type 5<\/strong>&nbsp;(<strong>ASBR External LSA<\/strong>) packets are generated by the&nbsp;<strong>ASBR<\/strong>&nbsp;to advertise external redistributed routes into the OSPF\u2019s&nbsp;<strong>AS<\/strong>. A typical example of an&nbsp;<strong>LSA Type 5<\/strong>&nbsp;would be an&nbsp;<strong>external prefix<\/strong>&nbsp;e.g&nbsp;<strong>192.168.10.0\/24<\/strong>&nbsp;or&nbsp;<strong>default route<\/strong>&nbsp;(internet) as shown below:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1008\" height=\"285\" src=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t5.png\" alt=\"\" class=\"wp-image-2877\" srcset=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t5.png 1008w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t5-300x85.png 300w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t5-768x217.png 768w\" sizes=\"(max-width: 1008px) 100vw, 1008px\" \/><\/figure>\n\n\n\n<p>Figure 6. LSA Type 5 packets advertise the default route to all OSPF routers<\/p>\n\n\n\n<p>This external route\/prefix is redistributed in to the OSPF network by the&nbsp;<strong>ASBR<\/strong>&nbsp;(<strong>R1<\/strong>) and seen&nbsp;as&nbsp;<strong>O E1<\/strong>&nbsp;or&nbsp;<strong>E2&nbsp;<\/strong>entries in other OSPF routers routing tables.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 6 \u2013 OSPF GROUP MEMBERSHIP LSA<\/h3>\n\n\n\n<p><strong>LSA Type 6<\/strong>&nbsp;(<strong>Group Membership LSA<\/strong>) packets were designed for Multicast OSPF (MOSPF), a protocol that supports multicast routing through OSPF. MOSPF is not supported by Cisco and is not widely used and is expected to be retired soon.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 7 \u2013 OSPF NOT SO STUBBY AREA (NSSA) EXTERNAL LSA<\/h3>\n\n\n\n<p><strong>LSA Type 7<\/strong>&nbsp;(<strong>NSSA External LSA<\/strong>) packets are used for some special area types that do not allow external distributed routes to go through and thus block&nbsp;<strong>LSA Type 5<\/strong>&nbsp;packets from flooding through them,&nbsp;<strong>LSA Type 7<\/strong>&nbsp;packets act as a mask for&nbsp;<strong>LSA Type 5<\/strong>&nbsp;packets to allow them to move through these special areas and reach the&nbsp;<strong>ABR<\/strong>&nbsp;that is able to translate&nbsp;<strong>LSA Type 7<\/strong>&nbsp;packets back to&nbsp;<strong>LSA Type 5<\/strong>&nbsp;packets.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-1 wp-block-gallery-6 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1011\" height=\"315\" src=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t7.png\" alt=\"\" data-id=\"2878\" data-full-url=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t7.png\" data-link=\"https:\/\/SUMMALAI.COM\/?attachment_id=2878\" class=\"wp-image-2878\" srcset=\"https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t7.png 1011w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t7-300x93.png 300w, https:\/\/SUMMALAI.COM\/wp-content\/uploads\/2020\/12\/t7-768x239.png 768w\" sizes=\"(max-width: 1011px) 100vw, 1011px\" \/><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>Figure 7. LSA Type 7 packets passing through an NSSA and being transformed into LSA Type 5 by the ABR<\/p>\n\n\n\n<p>In the above example,&nbsp;<strong>ABR R2<\/strong>&nbsp;translates&nbsp;<strong>LSA&nbsp;<\/strong><strong>Type 7&nbsp;<\/strong>into a&nbsp;<strong>LSA Type 5<\/strong>&nbsp;and floods it into the OSPF network.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 8 &#8211; OSPF EXTERNAL ATTRIBUTES LSA (OSPFV2) \/ LINK LOCAL LSA (OSPFV3)<\/h3>\n\n\n\n<p><strong>LSA Type 8<\/strong>&nbsp;packets (<strong>External Attributes LSA -OSPFv2-\/ Link Local LSA -OSPFv3-<\/strong>) in OSPFv2 (IPv4) are called&nbsp;<strong>External Attribute LSAs<\/strong>, and are used to transit BGP attributes through an OSPF network while BGP destinations are conveyed via&nbsp;<strong>LSA Type 5<\/strong>&nbsp;packets, however, this feature isn\u2019t supported by most routers. With OSPFv3 IPv6),&nbsp;<strong>LSA Type 8<\/strong>&nbsp;is redefined to carry&nbsp;<strong>IPv6<\/strong>&nbsp;information through OSPF network.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 9, 10 &amp; 11<\/h3>\n\n\n\n<p>Generally&nbsp;<strong>Opaque LSAs<\/strong>&nbsp;(<strong>LSA Type 9, 10 &amp; 11<\/strong>) are used to extend the capabilities of OSPF allowing the protocol to carry information OSPF doesn\u2019t necessarily care about. Practical application of&nbsp;<strong>Opaque LSAs<\/strong>&nbsp;is in MPLS traffic engineering where they are used to communicate interface parameters such as maximum bandwidth, unreserved bandwidth, etc. Following is a short analysis of each of the three Opaque LSAs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 9 \u2013 OSPF LINK SCOPE OPAQUE (OSPFV2) \/ INTRA AREA PREFIX LSA (OSPFV3)<\/h3>\n\n\n\n<p><strong>LSA Type 9<\/strong>&nbsp;in&nbsp;<strong>OSPFv2<\/strong>&nbsp;(<strong>IPv4<\/strong>) is defined as a&nbsp;<strong>Link Scope Opaque LSA<\/strong>&nbsp;for carrying OSPF information. For OSPFv3 it\u2019s redefined to handle a communication prefix for a special area type called&nbsp;<strong>Stub Area<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 10 \u2013 OSPF AREA SCOPE OPAQUE LSA<\/h3>\n\n\n\n<p><strong>LSA Type 10<\/strong>&nbsp;packets are used to flood OSPF information through other area routers even if these routers do not process this information in order to extend OSPF functionality, this LSA is used for traffic engineering to advertise MPLS and other protocols.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">LSA TYPE 11 \u2013 OSPF AS SCOPE OPAQUE LSA<\/h3>\n\n\n\n<p><strong>LSA Type 11<\/strong>&nbsp;packets serve the same purpose as&nbsp;<strong>LSA Type 10<\/strong>&nbsp;packets but are not flooded into special area types (Stub areas).<\/p>\n\n\n\n<p>Ref:  http:\/\/www.firewall.cx\/networking-topics\/routing\/ospf-routing-protocol\/1178-ospf-lsa-types-explained.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this article, we\u2019ll be diving deeper to analyze all eleven&nbsp;OSPF LSA Types&nbsp;using network diagrams and examples to help understand when each&nbsp;LSA type&nbsp;is used and how they keep the OSPF network updated. LSA TYPES &#8211; QUICK OVERVIEW Before we begin, let\u2019s take a quick look at the different type of OSPF LSA packets we\u2019ll cover: <a class=\"read-more\" href=\"https:\/\/SUMMALAI.COM\/?p=2871\">Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[400,4,9,19],"tags":[535,534,536],"class_list":["post-2871","post","type-post","status-publish","format-standard","hentry","category-ccnp","category-cert","category-networks","category-router-switch","tag-link-state-advertisement","tag-lsa-types","tag-ospf-lsa"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/posts\/2871","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2871"}],"version-history":[{"count":2,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/posts\/2871\/revisions"}],"predecessor-version":[{"id":2881,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=\/wp\/v2\/posts\/2871\/revisions\/2881"}],"wp:attachment":[{"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2871"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2871"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/SUMMALAI.COM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}