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<blockquote>
FULL/DR &nbsp; &nbsp;FULL/BDR &nbsp; 2WAY/DROTHER &nbsp;
</blockquote>
DROTHER - Designater Router Other<br />
Are present between in OSPF broadcast and nonbroadcast networks (networks that are electing DR and BDR). In broadcast and nonbroadcast networks adjacency is established only with DR and BDR on link.<br />
<br />
FULL/- is present in point-to-point and point-to-multipoint networks. With this type of links all OSPF routers create adjacency to each other and there is no DR BDR election.
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<div>
I tested :point-to-multipoint networks.<br />
&nbsp;the Show ip ospf neighbor on the:<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-42438790-1"><span>Hub#sh ip ospf neighbor </span>
<span></span>
<span>Neighbor ID     Pri   State           Dead Time   Address         Interface</span>
<span>3.3.3.3           0   FULL/  -        00:01:33    172.16.123.3    Tunnel0</span>
<span>2.2.2.2           0   FULL/  -        00:01:49    172.16.123.2    Tunnel0</span>
<span>Hub#</span>
</code></pre>
<br />
on the spokes :<br />
Spoke1#sh ip ospf neighbor <br />
<br />
Neighbor ID &nbsp; &nbsp; Pri &nbsp; State &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Dead Time &nbsp; Address &nbsp; &nbsp; &nbsp; &nbsp; Interface<br />
1.1.1.1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0 &nbsp; FULL/ &nbsp;- &nbsp; &nbsp; &nbsp; &nbsp;00:01:59 &nbsp; &nbsp;172.16.123.1 &nbsp; &nbsp;Tunnel0<br />
Spoke1#<br />
Spoke1#sh ip ospf neighbor <br />
Spoke2#sh ip ospf neighbor <br />
<br />
Neighbor ID &nbsp; &nbsp; Pri &nbsp; State &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Dead Time &nbsp; Address &nbsp; &nbsp; &nbsp; &nbsp; Interface<br />
1.1.1.1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0 &nbsp; FULL/ &nbsp;- &nbsp; &nbsp; &nbsp; &nbsp;00:01:36 &nbsp; &nbsp;172.16.123.1 &nbsp; &nbsp;Tunnel0<br />
Spoke2#
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<div>
I forgot to write that FULL/DROTHER cant be sen only when &quot;show ip ospf neighbor&quot; is issued on DR and BDR (so in broadcast and NBMA networks) between DR (or BDR) and OSPF routers that are DROTHERs on that network segment.<br />
<br />
In your case, since you are on point-to-multipoint network there is no DR/BDR election, so that's why there is - after /.
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<div>
I have not tried it yet, but I think FULL/DROTHER, will show up in Broadcast and non-broadcast network types, when the Spokes are configured with IP OSPF Priority 0<br />
so the Hub will be always be the DR and the spokes will never be elected neither DR nor BDR.
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<div>
Thank you for the valuable info
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<div>
<div class="content wysiwyg-content">
when running the command : show ip ospf neighbors, I can see in some configurations<br />
<b>Full/Drother</b><br />
and in other configurations<br />
<b>Full/-</b><br />
<br />
I would like to know the difference between &nbsp;OSPF &nbsp;Full/Drother and &nbsp;Full / -<br />
<br />
Thank you
</div>
</div>


when running the command : show ip ospf neighbors, I can see in some configurations
Full/Drother
and in other configurations
Full/-

I would like to know the difference between  OSPF  Full/Drother and  Full / -

Thank you

OSPF  Full/Drother and Full / -

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.