Here I just tried to deny network 188.8.131.52/32 in 184.108.40.206/32(both are loopbacks created in R3 and R1 respectively) and 220.127.116.11/32 in 18.104.22.168/32(two way denial).I want to permit all other networks. But it didn't work.I have attatched the configuration file.Can anybody please help me finding out the mistake i have done.Thanks in advance.
Your description does not match your configuration files.
What exactly are you trying to do ?
Note on R3 your acl is applied in the wrong direction.
Thanks Mr.Jon Marshall for responding to my query.
Actually I want to stop communication between 22.214.171.124/32 and 126.96.36.199/32 in both direction allowing all other communication.I have done changing direction of ACL application on interface(R3's in s1/1) to 'in'.But at that time neighborship between R2 n R3 went down.Do I need to apply a similar ACL at R1 by interchanging source and destination ip for this?Can you please mention how the ACL will look like?