I have 3 routers within Boson Sim. PIR1, PIR2 and PIR3. Serial 0/0 on PIR1 has an IP 22.214.171.124/30 and PIR2 serial 0/0 126.96.36.199/30. PIR2 also has an IP 188.8.131.52/25 on the fastethernet 0/0 and PIR3 has an IP 184.108.40.206/25. All have been configured for RIP ver2. I added network 220.127.116.11 on all 3. The only connection that won't ping is between PIR1 and PIR2. What have I missed? Cheers.
Th ip add scheme you were using were overlapping each other.If your using /25 then the range is from 18.104.22.168-22.214.171.124. So, the other serial wont take the same interface.
Plan your ip add acheme in follg way:-