It is usually the simplest things you miss. I had a MTU mismatch on the Nexus side. Fixed that and everything came up. Travis From: frog <frog-bounces@lists.frrouting.org> On Behalf Of Travis Garrison Sent: Tuesday, September 22, 2020 2:20 PM To: frog@lists.frrouting.org Subject: [FROG] OSPF with FRR and Nexus I have a Nexus 9300 that I am trying to get connected to FRR using OSPF. I have several Mikrotiks and other routers connected but this is my first Nexus. I think the issue is with my config on the nexus side. Any one have any ideas on what I missed? FRR - 7.4 release Debian 10.4 Interface configured with 100.76.0.1/30 address interface eno1d1 ip ospf network point-to-point ! router-id 100.78.0.3 ! router ospf ospf router-id 100.78.0.3 network 100.76.0.0/30 area 0.0.0.0 network 100.78.0.3/32 area 0.0.0.0 Nexus interface Ethernet1/49 ip address 100.76.0.2/30 ip ospf network point-to-point ip router ospf 0 area 0.0.0.0 no shutdown interface loopback0 ip address 100.78.0.1/32 ip router ospf 0 area 0.0.0.0 router ospf 0 router-id 100.78.0.1