Basic EIGRP Auto-Summary

In the above topology I have auto-summary enabled on R1 and R2. R3 does not have auto-summary. The result of this config is R1 and R2 will actually advertise the 10.0.0.0/8 network, since both of those 10. networks reside in that classful boundary.  Since their only neighbor is R3, R3 will have a duplicate route … Continue reading Basic EIGRP Auto-Summary