From UBNT:<\/p>\n
New features:<\/p>\n
Offloading\u00a0– Add\u00a0CLI\u00a0commands to\u00a0disable flow-table flushing in offloading engine when routing table changes:\u00a0 set system offload ipv4 disable-flow-flushing-upon-fib-changes set system offload ipv6 disable-flow-flushing-upon-fib-changes <\/p>\n Enhancements and bug fixes:<\/p>\n LDP\u00a0– fixed regression in\u00a01.10.0\u00a0when\u00a0LDP\u00a0configuration failed. Discussed\u00a0here<\/a> LoadBalancing\u00a0– fixed regression in\u00a01.10.1\u00a0when\u00a0LoadBalancing\u00a0failed to recover if WAN interface lost&restored link in 3 second interval. Discussed\u00a0here<\/a> DHCP\u00a0– fixed bug when\u00a0DHCP\u00a0server configuration\u00a0failed to commit with networks other than \/8, \/16, and \/24. Discussed\u00a0here<\/a> TrafficControl\u00a0– fixed regression in\u00a01.10.0\u00a0when “command not found” output was printed when running “show traffic-control …” commands. Discussed\u00a0here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" From UBNT: New features: Offloading\u00a0– Add\u00a0CLI\u00a0commands to\u00a0disable flow-table flushing in offloading engine when routing table changes:\u00a0 set system offload ipv4 disable-flow-flushing-upon-fib-changes set system offload ipv6 disable-flow-flushing-upon-fib-changes Discussed\u00a0here Prior to\u00a01.10.3\u00a0firmware flow-table in offloading engine was always flushed when route was\u00a0updated\u00a0in\u00a0linux\u00a0routing table. Flow flushing ensured that offloading\u00a0engine\u00a0got routing updates instantly but it wasted a lot of CPU\u00a0time […]<\/p>\n","protected":false},"author":1,"featured_media":1342,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[22],"tags":[13,15,189],"jetpack_publicize_connections":[],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2016\/08\/IMG_3920.jpg?fit=3264%2C2448&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p6VLMf-Aw","jetpack-related-posts":[{"id":1368,"url":"https:\/\/www.mtin.net\/blog\/random-ubnt-edgeswitch-16-interface-photos\/","url_meta":{"origin":2264,"position":0},"title":"Random UBNT EdgeSwitch 16 interface photos","author":"j2sw","date":"September 6, 2016","format":false,"excerpt":"","rel":"","context":"In "UBNT"","block_context":{"text":"UBNT","link":"https:\/\/www.mtin.net\/blog\/category\/ubnt\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2016\/09\/Screen-Shot-2016-08-31-at-3.33.40-PM-2.png?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2992,"url":"https:\/\/www.mtin.net\/blog\/ubnt-dream-machine\/","url_meta":{"origin":2264,"position":1},"title":"UBNT Dream Machine","author":"j2sw","date":"March 15, 2019","format":false,"excerpt":"","rel":"","context":"In "UBNT"","block_context":{"text":"UBNT","link":"https:\/\/www.mtin.net\/blog\/category\/ubnt\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2019\/03\/54254945_10158308222749554_1872148004916428800_o.jpg?fit=1070%2C750&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2019\/03\/54254945_10158308222749554_1872148004916428800_o.jpg?fit=1070%2C750&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2019\/03\/54254945_10158308222749554_1872148004916428800_o.jpg?fit=1070%2C750&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2019\/03\/54254945_10158308222749554_1872148004916428800_o.jpg?fit=1070%2C750&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":426,"url":"https:\/\/www.mtin.net\/blog\/ubnt-rocket-m5-temps\/","url_meta":{"origin":2264,"position":2},"title":"UBNT Rocket M5 temps","author":"j2sw","date":"November 13, 2015","format":false,"excerpt":"So I was messing around one day with an infrared thermometer and decided to see what the temp of a rocket m5 was powered on. This is not scientific by any means. Just something fun. This is a normal room temperature rocket not on. This is one after being on\u2026","rel":"","context":"In "UBNT"","block_context":{"text":"UBNT","link":"https:\/\/www.mtin.net\/blog\/category\/ubnt\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2015\/11\/IMG_0075-300x225.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2355,"url":"https:\/\/www.mtin.net\/blog\/ubnt-vs-cambium\/","url_meta":{"origin":2264,"position":3},"title":"UBNT vs Cambium -The legal battle","author":"j2sw","date":"August 11, 2018","format":false,"excerpt":"The Recently, it was announced that Ubiquiti Networks Inc (UBNT) is suing Cambium over the Cambium Elevate.\u00a0 \u00a0This will be a long post, so sit back with your favorite beverage and read away. Disclaimers. I have been in the ISP world since 1991. I cut my teeth on BBS systems\u2026","rel":"","context":"In "Cambium"","block_context":{"text":"Cambium","link":"https:\/\/www.mtin.net\/blog\/category\/cambium\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2018\/08\/image1.jpeg?fit=544%2C640&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3211,"url":"https:\/\/www.mtin.net\/blog\/ubnt-aircube-update\/","url_meta":{"origin":2264,"position":4},"title":"UBNT Aircube Update","author":"j2sw","date":"March 30, 2019","format":false,"excerpt":"A while back I did some posts on the Ubiquiti networks Aircube. http:\/\/www.mtin.net\/blog\/ubnt-air-cube-first-impressions\/ http:\/\/www.mtin.net\/blog\/aircube-part-2\/ While cleaning my office I figured it was time to plug this guy back in and do a check of the new firmware. As soon as it was online, I logged in and was greeted with\u2026","rel":"","context":"In "UBNT"","block_context":{"text":"UBNT","link":"https:\/\/www.mtin.net\/blog\/category\/ubnt\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2019\/03\/aircube1.png?fit=1200%2C519&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2019\/03\/aircube1.png?fit=1200%2C519&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2019\/03\/aircube1.png?fit=1200%2C519&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2019\/03\/aircube1.png?fit=1200%2C519&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1968,"url":"https:\/\/www.mtin.net\/blog\/ubnt-air-cube-first-impressions\/","url_meta":{"origin":2264,"position":5},"title":"UBNT Air Cube first impressions","author":"j2sw","date":"January 10, 2018","format":false,"excerpt":"I have been meaning to start this review for several weeks.\u00a0 Due to the holidays and sickness that has not happened until now.\u00a0 Recently Ubiquiti Networks released the airCubeAC. 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\n<\/a>Discussed\u00a0here<\/a>
\n<\/a>
\n<\/a>Prior to\u00a01.10.3\u00a0firmware flow-table in offloading engine was always flushed when route was\u00a0updated\u00a0in\u00a0linux\u00a0routing table. Flow flushing ensured that offloading\u00a0engine\u00a0got routing updates instantly but it wasted a lot of CPU\u00a0time and decreased performance\u00a0if\u00a0routing table was constantly updated for (instance in Full\u00a0BGP, big\u00a0OSPF\u00a0or flapping\u00a0PPPoE\u00a0interface scenarios)
\n<\/a>
\n<\/a>In\u00a01.10.3\u00a0firmware by default\u00a0disable-flow-flushing-upon-fib-changes\u00a0is\u00a0not set\u00a0which means that flow table in offloading engine is always flushed upon routing table changes same way as it used to be in previous firmware.
\n<\/a>\u00a0
\n<\/a>If you have Full-BGP\u00a0table or large\u00a0OSPF\u00a0network they you are\u00a0advised to set\u00a0disable-flow-flushing-upon-fib-changes\u00a0this will ensure less CPU-load and increase\u00a0max throughput.
\n<\/a>\u00a0
\n<\/a>Important note for\u00a0multi-WAN environments\u00a0– if\u00a0nexthop\u00a0interface of default-gateway\u00a0changes and\u00a0disable-flow-flushing-upon-fib-changes\u00a0is set then it will take up to\u00a0flow-lifetime\u00a0seconds before all existing\u00a0offloaded flows switch to new nexthop interface (up to 12 seconds by default).
\n<\/a>\u00a0 Offloading\u00a0–\u00a0Add\u00a0CLI\u00a0command to modify flow-lifetime in offloading engine (expressed in seconds):\u00a0
\n<\/a>set system offload flow-lifetime 24Prior\u00a0to\u00a01.10.3\u00a0firmware\u00a0flow-lifetime\u00a0parameter was\u00a0hardcoded\u00a0and\u00a0was\u00a0not\u00a0synchronized\u00a0between different ER\u00a0platforms: 12 seconds on ER-Lite\/ER-Poe, 6\u00a0seconds on ER\/ER-pro\/ER-4\/ER-6 and 3 seconds on ER-Infinity.\u00a0
\n<\/a>
\n<\/a>In\u00a01.10.3\u00a0firmware default value of\u00a0flow-lifetime\u00a0is set to 12\u00a0seconds\u00a0for all ER platforms\u00a0and now it can be modified.\u00a0By\u00a0modifying\u00a0flow-lifetime\u00a0parameter you control how much traffic skips from offloading engine into\u00a0linux\u00a0network stack.
\n<\/a>
\n<\/a>If you\u00a0increase\u00a0flow-lifetime\u00a0then:
\n<\/a>\u00a0a) Offloaded\u00a0IP\u00a0flows\u00a0will expire\u00a0less\u00a0frequently and\u00a0less\u00a0packets will be forwarded to\u00a0linux
\n<\/a>\u00a0b)\u00a0CPU load\u00a0will\u00a0decrease\u00a0and\u00a0max\u00a0throughput\u00a0will\u00a0increase
\n<\/a>\u00a0c) if\u00a0disable-flow-flushing-upon-fib-changes\u00a0parameter is set then it will take\u00a0more\u00a0time for offloading engine to\u00a0detect changes in routing table\u00a0
\n<\/a>\u00a0
\n<\/a>If you\u00a0decrease\u00a0flow-lifetime\u00a0then:
\n<\/a>\u00a0a) Offloaded\u00a0IP\u00a0flows\u00a0will expire\u00a0more\u00a0frequently and\u00a0more\u00a0packets will be forwarded to\u00a0linux
\n<\/a>\u00a0b) CPU load\u00a0will\u00a0increase\u00a0and max throughput\u00a0will\u00a0decrease
\n<\/a>\u00a0c)\u00a0if\u00a0disable-flow-flushing-upon-fib-changes\u00a0parameter is set then it will take\u00a0less\u00a0time for\u00a0offloading engine to\u00a0detect changes in routing table\u00a0
\n<\/a>\u00a0 Offloading\u00a0– add\u00a0CLI\u00a0command to show flows in offloading engine: show ubnt offload flows Offloading\u00a0– add\u00a0CLI\u00a0command to show offloading engine statistics: show ubnt offload statistics<\/p>\n