Why bad mask error of /24 comes even every ip and mask is right in the gns3 ?

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Hlo,

Put the following command:-

ip address 10.1.2.1 255.255.255.0

 

The problem is that you are trying to assign the network address on a interface. The 10.1.2.0/24 is a network address.

Thanks

 

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  1. in Filesystem.php line 111
  2. at HandleExceptions->handleError(2, 'file_put_contents(/var/www/html/storage/framework/sessions/IttFWgg4LBRycQAKsm0sTUFXTGvq2zu9S7zPbutR): 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/IttFWgg4LBRycQAKsm0sTUFXTGvq2zu9S7zPbutR', 'contents' => 'a:4:{s:6:"_token";s:40:"mlacShAGInZ4HJHXX5KT4msOuAfX8KQGsiHmNUGu";s:11:"viewed_urls";a:1:{i:0;s:74:"why-bad-mask-error-of-24-comes-even-every-ip-and-mask-is-right-in-the-gns3";}s:9:"_previous";a:1:{s:3:"url";s:102:"http://www.networkbulls.com/why-bad-mask-error-of-24-comes-even-every-ip-and-mask-is-right-in-the-gns3";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}', 'lock' => true))
  3. at file_put_contents('/var/www/html/storage/framework/sessions/IttFWgg4LBRycQAKsm0sTUFXTGvq2zu9S7zPbutR', 'a:4:{s:6:"_token";s:40:"mlacShAGInZ4HJHXX5KT4msOuAfX8KQGsiHmNUGu";s:11:"viewed_urls";a:1:{i:0;s:74:"why-bad-mask-error-of-24-comes-even-every-ip-and-mask-is-right-in-the-gns3";}s:9:"_previous";a:1:{s:3:"url";s:102:"http://www.networkbulls.com/why-bad-mask-error-of-24-comes-even-every-ip-and-mask-is-right-in-the-gns3";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}', 2) in Filesystem.php line 111
  4. at Filesystem->put('/var/www/html/storage/framework/sessions/IttFWgg4LBRycQAKsm0sTUFXTGvq2zu9S7zPbutR', 'a:4:{s:6:"_token";s:40:"mlacShAGInZ4HJHXX5KT4msOuAfX8KQGsiHmNUGu";s:11:"viewed_urls";a:1:{i:0;s:74:"why-bad-mask-error-of-24-comes-even-every-ip-and-mask-is-right-in-the-gns3";}s:9:"_previous";a:1:{s:3:"url";s:102:"http://www.networkbulls.com/why-bad-mask-error-of-24-comes-even-every-ip-and-mask-is-right-in-the-gns3";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}', true) in FileSessionHandler.php line 83
  5. at FileSessionHandler->write('IttFWgg4LBRycQAKsm0sTUFXTGvq2zu9S7zPbutR', 'a:4:{s:6:"_token";s:40:"mlacShAGInZ4HJHXX5KT4msOuAfX8KQGsiHmNUGu";s:11:"viewed_urls";a:1:{i:0;s:74:"why-bad-mask-error-of-24-comes-even-every-ip-and-mask-is-right-in-the-gns3";}s:9:"_previous";a:1:{s:3:"url";s:102:"http://www.networkbulls.com/why-bad-mask-error-of-24-comes-even-every-ip-and-mask-is-right-in-the-gns3";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}') in Store.php line 128
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  7. at StartSession->terminate(object(Request), object(Response)) in Kernel.php line 216
  8. at Kernel->terminateMiddleware(object(Request), object(Response)) in Kernel.php line 187
  9. at Kernel->terminate(object(Request), object(Response)) in index.php line 58
  10. at require_once('/var/www/html/public/index.php') in index.php line 20