New answers tagged rip
no auto-summary can not prevent that. Because when you using dynamic routing protocol like RIP, it will send the subnet mask of the classful boundary, and not the actual subnet mask. The command no auto summary will turn this feature off in RIP, and send the actual subnet mask. Update @lucaConfa You see that, because you use no auto-summary command. so ...
You must use Distribute Lists to perform this action. On router BRANCH, do these actions: First, creating access-list access-list 101 permit <Network You permit here> access-list 101 deny 172.16.53.0 0.0.0.128 Then config Distribute Lists for RIP router rip distribute-list 101 in Serial0/0/1
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