Re: ospf point to point network

On 2019-06-22, Henry Bonath <henry@thebonaths.com> wrote:
> What about GRE(4) with a Cisco router on the other end?
>
> /etc/hostname.gre123:
> 1.1.1.1 1.1.1.2 netmask 255.255.255.252 up
> tunnel IP.OF.OB.SD IP.OF.I.OS
>
> Cisco IOS:
> !
> interface Tunnel123
> ip address 1.1.1.2 255.255.255.252
> tunnel source GigabitEthernet0/0/1
> tunnel destination IP.OF.OB.SD
> tunnel mode gre
> !

That's likely to work, at the expense of reduced MTU. But is it really
worth it? The main problem with ethernet interfaces and ospfd was a bug
with DR elections but that has been fixed for a while now.