Why Dynamic ARP inspection is performed?

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DAI is preformed to mitigate "man in the middle attack" mainly. This feature on switch makes sure that ARP request is coming from the same ip address and same mac address on particular port according to DAI database.

for further answers please check on course of CCNP (switch)  https://www.networkbulls.com/training-ccnp-course-delhi 

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  1. in Filesystem.php line 111
  2. at HandleExceptions->handleError(2, 'file_put_contents(/var/www/html/storage/framework/sessions/hQhlGNivSa93nN0qatcScVAHcm7v7IXjG7qldyC2): failed to open stream: No space left on device', '/var/www/html/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php', 111, array('path' => '/var/www/html/storage/framework/sessions/hQhlGNivSa93nN0qatcScVAHcm7v7IXjG7qldyC2', 'contents' => 'a:4:{s:6:"_token";s:40:"xh7a4pcvqIpMe0WEsTLCwjssCJaIQy5xzt6RUQgv";s:11:"viewed_urls";a:1:{i:0;s:39:"why-dynamic-arp-inspection-is-performed";}s:9:"_previous";a:1:{s:3:"url";s:67:"http://www.networkbulls.com/why-dynamic-arp-inspection-is-performed";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}', 'lock' => true))
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  10. at require_once('/var/www/html/public/index.php') in index.php line 20