{"id":4493,"date":"2013-03-06T15:20:43","date_gmt":"2013-03-06T21:20:43","guid":{"rendered":"http:\/\/gregsowell.com\/?p=4493"},"modified":"2013-03-06T15:20:54","modified_gmt":"2013-03-06T21:20:54","slug":"secondary-ip-on-cisco-asa","status":"publish","type":"post","link":"https:\/\/gregsowell.com\/?p=4493","title":{"rendered":"Secondary IP On Cisco ASA"},"content":{"rendered":"<p>While decommissioning some old routers, I need to transfer an IP address to an ASA on a subnet.  Unfortunately the ASA&#8217;s don&#8217;t allow you to do this.  The standard &#8220;ip address X.X.X.X Y.Y.Y.Y secondary&#8221; doesn&#8217;t work.<\/p>\n<p>I did a quick google and this <a href=\"http:\/\/www.ducea.com\/2008\/05\/31\/adding-a-secondary-ip-address-on-a-cisco-asa-ethernet-interface\/\">beautiful bastard<\/a> had the solution, static ARP with proxy-arp.<\/p>\n<p>Figure out what the existing MAC is on the interface by issuing;<\/p>\n<pre class=\"gs-code\"><code class=\"language-plaintext\">show interface<\/code><\/pre>\n<p>Then use that mac address along with proxy ARP for your secondary IP:<\/p>\n<pre class=\"gs-code\"><code class=\"language-plaintext\">arp DMZ 192.168.3.3 0000.1111.2222 alias<\/code><\/pre>\n<p>Wwwweeeeeeeeeeee<\/p>\n","protected":false},"excerpt":{"rendered":"<p>While decommissioning some old routers, I need to transfer an IP address to an ASA on a subnet. Unfortunately the ASA&#8217;s don&#8217;t allow you\u2026<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,25,8,24],"tags":[],"class_list":["post-4493","post","type-post","status-publish","format-standard","hentry","category-cisco","category-cisco-asa","category-networking","category-security"],"_links":{"self":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/4493","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4493"}],"version-history":[{"count":2,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/4493\/revisions"}],"predecessor-version":[{"id":4495,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/4493\/revisions\/4495"}],"wp:attachment":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4493"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4493"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4493"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}