Neighbor shows DRother on point-to-point network

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hi,

i'm studying EOS in my lab this is my topology

im configuring OSPF between Core1 (EXOS) and PROD_RTR (Cisco IOS)
both links are set to Point-to-Point
OSPF Neibours came up on both Cisco and EXOS, 

on EXOS
Core1.16 # show ospf neighbor 
Neighbor ID     Pri State              Up/Dead Time             Address         Interface
          BFD Session State 
==========================================================================================
10.10.10.20       1 FULL      /DROTHER 00:00:00:44/00:00:00:03  172.20.20.2     PROD      
          None              
on IOS
PROD_RTR#show ip ospf neighbor 
Neighbor ID     Pri   State           Dead Time   Address         Interface
10.10.10.10       0   FULL/  -        00:00:32    172.20.20.1     Ethernet0/0
my question, why does it show on EXOS and full /DROTHER?
AFAIK, that state shouldn't show if we are using PTP and network type?
Thanks 
Photo of Sulaiman Al Darmaki

Sulaiman Al Darmaki

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Posted 1 month ago

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Photo of Necheporenko, Nikolay

Necheporenko, Nikolay, Employee

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Hello Sulaiman Al Darmaki,

It is expected behaviour. OSPF routers may operate as DR, BDR or DROTHER only. 
No DR/BDR elected on point-to-point or point-to-multipoint links, so the only "DROTHER" is left.



Best Regards,
Nikolay