{"id":398,"date":"2011-07-07T14:55:30","date_gmt":"2011-07-07T20:55:30","guid":{"rendered":"http:\/\/benincosa.com\/blog\/?p=398"},"modified":"2014-11-19T11:25:16","modified_gmt":"2014-11-19T17:25:16","slug":"ucs-network-anomaly-solved","status":"publish","type":"post","link":"https:\/\/benincosa.com\/?p=398","title":{"rendered":"UCS Network Anomaly solved"},"content":{"rendered":"<p>We were installing a brand new Cisco UCS chassis with a customer and had to use 1GbE uplinks from each fabric extender. \u00a0We started getting some strange ping issues where ping would work about 60-90% of the time. \u00a0As we tried to figure it out, we checked each component and were pretty satisfied that our service profile was correct. \u00a0Then we started checking the network and lo and behold we realized that two of our servers had the MAC addresses! \u00a0After removing the duplicate all worked great.<\/p>\n<p>Lesson learned: \u00a0When creating your own mac addresses be sure they are unique! \u00a0Better to put everything in one or more unique pools and just select from the pools instead of creating them one at a time.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We were installing a brand new Cisco UCS chassis with a customer and had to use 1GbE uplinks from each fabric extender. \u00a0We started getting some strange ping issues where ping would work about 60-90% of the time. \u00a0As we tried to figure it out, we checked each component and were pretty satisfied that our&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts\/398"}],"collection":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=398"}],"version-history":[{"count":2,"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts\/398\/revisions"}],"predecessor-version":[{"id":2789,"href":"https:\/\/benincosa.com\/index.php?rest_route=\/wp\/v2\/posts\/398\/revisions\/2789"}],"wp:attachment":[{"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/benincosa.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}