{"id":903,"date":"2014-08-27T11:05:14","date_gmt":"2014-08-27T09:05:14","guid":{"rendered":"http:\/\/elkano.org\/blog\/?p=903"},"modified":"2014-08-27T11:06:26","modified_gmt":"2014-08-27T09:06:26","slug":"check-jumbo-frames-working","status":"publish","type":"post","link":"https:\/\/elkano.org\/blog\/check-jumbo-frames-working\/","title":{"rendered":"Check if jumbo frames are working"},"content":{"rendered":"<p>This is a simple post showing how to test if large MTU is working in your network using\u00a0ping tool:<\/p>\n<p>When jumbo frames are not enabled in all networking devs:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"no-highlight\"># ping -s 8000 -M do -c 5 172.16.64.75\r\nPING 172.16.64.75 (172.16.64.75) 2000(2028) bytes of data.\r\nFrom 172.16.64.68 icmp_seq=1 Frag needed and DF set (mtu = 1500)\r\nFrom 172.16.64.68 icmp_seq=1 Frag needed and DF set (mtu = 1500)\r\nFrom 172.16.64.68 icmp_seq=1 Frag needed and DF set (mtu = 1500)\r\nFrom 172.16.64.68 icmp_seq=1 Frag needed and DF set (mtu = 1500)\r\nFrom 172.16.64.68 icmp_seq=1 Frag needed and DF set (mtu = 1500)\r\n\r\n--- 172.16.64.75 ping statistics ---\r\n0 packets transmitted, 0 received, +5 errors<\/pre>\n<p>And with enabled jumbo frames:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"no-highlight\"># ping -s 8000 -M do -c 5 172.16.64.75\r\nPING 172.16.64.75 (172.16.64.75) 8000(8028) bytes of data.\r\n8008 bytes from 172.16.64.75: icmp_seq=1 ttl=64 time=0.461 ms\r\n8008 bytes from 172.16.64.75: icmp_seq=2 ttl=64 time=0.360 ms\r\n8008 bytes from 172.16.64.75: icmp_seq=3 ttl=64 time=0.402 ms\r\n8008 bytes from 172.16.64.75: icmp_seq=4 ttl=64 time=0.410 ms\r\n8008 bytes from 172.16.64.75: icmp_seq=5 ttl=64 time=0.347 ms\r\n\r\n--- 172.16.64.75 ping statistics ---\r\n5 packets transmitted, 5 received, 0% packet loss, time 3998ms\r\nrtt min\/avg\/max\/mdev = 0.347\/0.396\/0.461\/0.040 ms<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>This is a simple post showing how to test if large MTU is working in your network using\u00a0ping tool: When jumbo frames are not enabled in all networking devs: # ping -s 8000 -M do -c 5 172.16.64.75 PING 172.16.64.75 (172.16.64.75) 2000(2028) bytes of data. From 172.16.64.68 icmp_seq=1 Frag needed and DF set (mtu = [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3,27,21],"tags":[127,126,115],"_links":{"self":[{"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/posts\/903"}],"collection":[{"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/comments?post=903"}],"version-history":[{"count":3,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/posts\/903\/revisions"}],"predecessor-version":[{"id":906,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/posts\/903\/revisions\/906"}],"wp:attachment":[{"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/media?parent=903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/categories?post=903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/tags?post=903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}