How to avoid sub optimal routing in ospf ?

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CCNA Security
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First of all it will be very helpful for us if you share some scenario where you want to prevent sub optimal routing.

If we talk about single area, SPF is responsible for calculating shortest path among all routers, so there will be no sub optimal routing.If we talk about inter area scenarios Intra area routes are always preferred over Inter area routes.

For external networks ospf have forwarding address to prevent sub optimal routing.

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  1. in Filesystem.php line 111
  2. at HandleExceptions->handleError(2, 'file_put_contents(/var/www/html/storage/framework/sessions/lpAs72xYv3lMlG5hDBK41NpI7OnqEEDgduu6Bshd): 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/lpAs72xYv3lMlG5hDBK41NpI7OnqEEDgduu6Bshd', 'contents' => 'a:4:{s:6:"_token";s:40:"VSDEYfhDTiJVsKd6xumwGZqpLTeZ4Ras23eXpF0R";s:11:"viewed_urls";a:1:{i:0;s:40:"how-to-avoid-sub-optimal-routing-in-ospf";}s:9:"_previous";a:1:{s:3:"url";s:68:"http://www.networkbulls.com/how-to-avoid-sub-optimal-routing-in-ospf";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}', 'lock' => true))
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  4. at Filesystem->put('/var/www/html/storage/framework/sessions/lpAs72xYv3lMlG5hDBK41NpI7OnqEEDgduu6Bshd', 'a:4:{s:6:"_token";s:40:"VSDEYfhDTiJVsKd6xumwGZqpLTeZ4Ras23eXpF0R";s:11:"viewed_urls";a:1:{i:0;s:40:"how-to-avoid-sub-optimal-routing-in-ospf";}s:9:"_previous";a:1:{s:3:"url";s:68:"http://www.networkbulls.com/how-to-avoid-sub-optimal-routing-in-ospf";}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('lpAs72xYv3lMlG5hDBK41NpI7OnqEEDgduu6Bshd', 'a:4:{s:6:"_token";s:40:"VSDEYfhDTiJVsKd6xumwGZqpLTeZ4Ras23eXpF0R";s:11:"viewed_urls";a:1:{i:0;s:40:"how-to-avoid-sub-optimal-routing-in-ospf";}s:9:"_previous";a:1:{s:3:"url";s:68:"http://www.networkbulls.com/how-to-avoid-sub-optimal-routing-in-ospf";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}') in Store.php line 128
  6. at Store->save() in StartSession.php line 88
  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 59
  10. at require_once('/var/www/html/public/index.php') in index.php line 20