I use a wildcard mask matching the exact interface that I want to advertise in EIGRP the very same as in OSPF
I have never had any issues but I want to make sure of it before LAB day. Example inter fas 0/1 ip address 10.10.10.1 255.255.255.0 inter serial 0/1 ip address 20.20.20.1 255.255.255.128 If I used OSPF router ospf 1 network 10.10.10.1 0.0.0.0 area 0 network 20.20.20.1 0.0.0.0 area 0 If I used EIGRP router eigrp 15 (this is my preferred method) network 10.10.10.1 0.0.0.0 network 20.20.20.1 0.0.0.0 or router eigrp 15 network 10.10.10.1 0.0.0.255 network 20.20.20.1 0.0.0.127
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