{"id":2800,"date":"2019-06-10T00:27:11","date_gmt":"2019-06-09T22:27:11","guid":{"rendered":"http:\/\/miro.borodziuk.eu\/?p=2800"},"modified":"2019-08-31T00:12:42","modified_gmt":"2019-08-30T22:12:42","slug":"elastic-ip-eip-and-elastic-network-interface-eni","status":"publish","type":"post","link":"http:\/\/miro.borodziuk.eu\/index.php\/2019\/06\/10\/elastic-ip-eip-and-elastic-network-interface-eni\/","title":{"rendered":"Elastic IP (EIP) and Elastic Network Interface (ENI)"},"content":{"rendered":"<p><!--more--><\/p>\n<p><span style=\"color: #3366ff;\">Elastic IPs (EIPs)<\/span><\/p>\n<ul>\n<li>A public IP address that can be &#8220;moved&#8221;<\/li>\n<li>Enables instances without a public IP to become accessible from the Internet<\/li>\n<\/ul>\n<p>Good to know:<\/p>\n<ul>\n<li>EIPs are <strong>region<\/strong> specific<\/li>\n<li><strong>IPv6 not<\/strong> currently <strong>supported<\/strong><\/li>\n<li>Two-step process to implement: allocation and association<\/li>\n<li>Upon association, any previous public IP is released (DNS hostname changes as well)<\/li>\n<li>Can be disassociated and reassociated with another instance<\/li>\n<li>Two-step process to remove: disassociate and release<\/li>\n<\/ul>\n<p>You are charged when:<\/p>\n<ul>\n<li>Elastic IPs not associated;<\/li>\n<li>More than one Elastic IP on an instance<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #3366ff;\">Elastic Network Interfaces (ENIs)<\/span><\/p>\n<p>Virtual network card that can include:<\/p>\n<ul>\n<li>Primary and secondary private IPv4 addresses<\/li>\n<li>An Elastic IP address (IPv4)<\/li>\n<li>A public IPv4 address<\/li>\n<li>Public IPv6 addresses<\/li>\n<li>Security groups<\/li>\n<li>MAC address Description<\/li>\n<\/ul>\n<p>Good to know:<\/p>\n<ul>\n<li>Every instance in a VPC has a default network interface, called the primary network interface (eth0). You cannot detach a primary network interface from an instance.<\/li>\n<li>When detaching and reattaching to instances, the attributes and traffic follow the interface.<\/li>\n<li>You can modify attributes after creation (security groups and IP addresses).<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":2862,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[78],"tags":[],"_links":{"self":[{"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/posts\/2800"}],"collection":[{"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/comments?post=2800"}],"version-history":[{"count":4,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/posts\/2800\/revisions"}],"predecessor-version":[{"id":2804,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/posts\/2800\/revisions\/2804"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/media\/2862"}],"wp:attachment":[{"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/media?parent=2800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/categories?post=2800"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/tags?post=2800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}