If arp is blocked by firewall than we able to make neighborship between routers in IGP routing protocol?

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NO we cant be able to establish neighborship between routing protocols if arp is disabled.

IT is must.

If firewall is deployed in transparent mode ARP is by default allowed through it.

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  1. in Filesystem.php line 111
  2. at HandleExceptions->handleError(2, 'file_put_contents(/var/www/html/storage/framework/sessions/fJL1R51kpYAJ4Lvc2iLZzWIuTgRlmR4lO9gy2jJE): 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/fJL1R51kpYAJ4Lvc2iLZzWIuTgRlmR4lO9gy2jJE', 'contents' => 'a:4:{s:6:"_token";s:40:"ce6gFd4Z8tUVZfiABxiz9dzWyjrRRVusGzbJxuAG";s:11:"viewed_urls";a:1:{i:0;s:103:"if-arp-is-blocked-by-firewall-than-we-able-to-make-neighborship-between-routers-in-igp-routing-protocol";}s:9:"_previous";a:1:{s:3:"url";s:131:"http://www.networkbulls.com/if-arp-is-blocked-by-firewall-than-we-able-to-make-neighborship-between-routers-in-igp-routing-protocol";}s:6:"_flash";a:2:{s:3:"old";a:0:{}s:3:"new";a:0:{}}}', 'lock' => true))
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  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 58
  10. at require_once('/var/www/html/public/index.php') in index.php line 20