{"id":6747,"date":"2021-03-09T12:12:53","date_gmt":"2021-03-09T11:12:53","guid":{"rendered":"http:\/\/tomaskalabis.com\/wordpress\/?p=6747"},"modified":"2021-03-17T10:00:25","modified_gmt":"2021-03-17T09:00:25","slug":"dell-emc-s4112-on-vlt-and-lacp-issue-while-reloading-vlt-peer","status":"publish","type":"post","link":"https:\/\/tomaskalabis.com\/wordpress\/dell-emc-s4112-on-vlt-and-lacp-issue-while-reloading-vlt-peer\/","title":{"rendered":"DELL EMC S4112-ON VLT and LACP issue while reloading VLT peer"},"content":{"rendered":"\n<h3>DELL EMC S4112-ON VLT and LACP issue while reloading VLT peer<\/h3>\n<p>One of my customer had problem with DELL EMC S4112-ON switch, so we opened ticket on DELL EMC support, after few days arrived the brand new switch. We did the firmware upgrade to version <strong>10.5.1.2<\/strong> ( we have same version on second unit), restore configuration to the new unit.<\/p>\n<ul>\n<li>Product : S4112F-ON<\/li>\n<li>Description : S4112F-ON 12x10GbE, 3x100GbE Interface Module<\/li>\n<li>Software version : 10.5.1.2<\/li>\n<\/ul>\n<div>\u00a0<\/div>\n<p>Now is time to installation of the brand new unit, i pluged-in the sfp+ cables, 100 GbE VLT link and powered up the switch. In background was powered on about 30 VM on Hyper-V 2019 and iSCSI connectivity to DELL SC3020 storage.\u00a0<\/p>\n<p>When was boot of the new unit done, all hyperv nodes were unavailable, the network goes down, of course that iSCSI network too = all VMs was in state &#8222;Paused-Critical&#8220;<\/p>\n<h4>And why?\u00a0 There are logs from one of the Hyper-V nodes:\u00a0<\/h4>\n<ul>\n<li>2:12:18 HPE Ethernet 10\/25Gb 2-port 640SFP28 Adapter #2 device detects that the link is up, and has initiated a normal operation. (n<em>ew unit booted and network card is connected)<\/em>\u00a0<\/li>\n<li>2:12:19 HPE Ethernet 10\/25Gb 2-port 640SFP28 Adapter device detects that the link is down. This may occur if the physical link is disconnected or damaged, or if the other end-port is down. (&#8222;old unit&#8220; was diconnected, and all traffic was disconnected included iSCSI)<\/li>\n<li>2:13:55 HPE Ethernet 10\/25Gb 2-port 640SFP28 Adapter device detects that the link is up, and has initiated a normal operation. (after 1 min and some secconds the &#8222;old unit&#8220; was reconnected<\/li>\n<\/ul>\n<h4>Some logs from new switch:\u00a0<\/h4>\n<p><a href=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-1.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-large wp-image-6760\" src=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-1-494x272.png\" alt=\"\" width=\"494\" height=\"272\" srcset=\"https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-1-494x272.png 494w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-1-288x159.png 288w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-1-768x423.png 768w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-1-1536x846.png 1536w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-1.png 2004w\" sizes=\"(max-width: 494px) 100vw, 494px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-2.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-large wp-image-6765\" src=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-2-494x279.png\" alt=\"\" width=\"494\" height=\"279\" srcset=\"https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-2-494x279.png 494w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-2-288x163.png 288w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-2-768x434.png 768w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-2-1536x868.png 1536w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-2.png 1992w\" sizes=\"(max-width: 494px) 100vw, 494px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-3.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-large wp-image-6764\" src=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-3-494x145.png\" alt=\"\" width=\"494\" height=\"145\" srcset=\"https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-3-494x145.png 494w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-3-288x85.png 288w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-3-768x226.png 768w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-3-1536x452.png 1536w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-3.png 1972w\" sizes=\"(max-width: 494px) 100vw, 494px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-4.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-large wp-image-6763\" src=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-4-494x240.png\" alt=\"\" width=\"494\" height=\"240\" srcset=\"https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-4-494x240.png 494w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-4-288x140.png 288w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-4-768x373.png 768w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-4-1536x746.png 1536w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-4.png 1980w\" sizes=\"(max-width: 494px) 100vw, 494px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-5.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-large wp-image-6762\" src=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-5-494x173.png\" alt=\"\" width=\"494\" height=\"173\" srcset=\"https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-5-494x173.png 494w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-5-288x101.png 288w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-5-768x268.png 768w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-5-1536x537.png 1536w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-5.png 2004w\" sizes=\"(max-width: 494px) 100vw, 494px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-6.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-large wp-image-6761\" src=\"http:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-6-494x122.png\" alt=\"\" width=\"494\" height=\"122\" srcset=\"https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-6-494x122.png 494w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-6-288x71.png 288w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-6-768x189.png 768w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-6-1536x379.png 1536w, https:\/\/tomaskalabis.com\/wordpress\/wp-content\/uploads\/2021\/03\/S4112-6.png 1962w\" sizes=\"(max-width: 494px) 100vw, 494px\" \/><\/a><\/p>\n<p>This is a big issue in OS10, while reloading your VLT peer all LACP traffic goes down (port-channel) for 1-2 minutes.\u00a0\u00a0<\/p>\n<p><a href=\"https:\/\/www.dell.com\/community\/Networking-General\/S4048-ON-VLT-and-LACP-issue-while-reloading-VLT-peer\/td-p\/6107971\/page\/2\" target=\"_blank\" rel=\"noopener\">https:\/\/www.dell.com\/community\/Networking-General\/S4048-ON-VLT-and-LACP-issue-while-reloading-VLT-peer\/td-p\/6107971\/page\/2<\/a><\/p>\n<h4>UPDATE 17. 3. 2021<\/h4>\n<p>With firmware <a href=\"https:\/\/www.force10networks.com\/CSPortal20\/Software\/documentation\/SmartFabric_OS10_Release_Notes_10.5.1.4.pdf\" target=\"_blank\" rel=\"noopener\"><strong>10.5.1.4<\/strong><\/a> was problem with VLT and LACP issue while reloading VLT peer fixed. Name of fix is: <strong>AR-36952<\/strong>. Please update your OS10 switches to latest 10.5.1.4 firmware. I dont have experience with updating to latest firmware and i think, that update is WITH DOWNTIME. More info coming soon.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DELL EMC S4112-ON VLT and LACP issue while reloading VLT peer One of my customer had problem with DELL EMC S4112-ON switch, so we opened ticket on DELL EMC support, &#8230;<\/p>\n","protected":false},"author":2,"featured_media":3495,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[303,331],"tags":[330,281,328,329,332],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DELL EMC S4112-ON VLT and LACP issue while reloading VLT peer - tomaskalabis.com<\/title>\n<meta name=\"description\" content=\"DELL EMC S4112-ON VLT and LACP issue while reloading VLT peer bug in OS10. port channel goes down while reloading the peer.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tomaskalabis.com\/wordpress\/dell-emc-s4112-on-vlt-and-lacp-issue-while-reloading-vlt-peer\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DELL EMC S4112-ON VLT and LACP issue while reloading VLT peer - 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