RIP Justification

Julien Goodwin nanog at
Thu Sep 30 04:13:11 UTC 2010

On 30/09/10 13:42, Mark Smith wrote:
> One of the large delays you see in OSPF is election of the designated
> router on multi-access links such as ethernets. As ethernet is being
> very commonly used for point-to-point non-edge links, you can eliminate
> that delay and also the corresponding network LSA by making OSPF treat
> the link as a point-to-point link e.g.
> int ethernet0
>   ip ospf network point-to-point
> If your implementation doesn't support point-to-point mode for an
> interface, point-to-multipoint mode on an ethernet would achieve
> something somewhat equivalent.

Do any implementations go point-to-point automatically if an ethernet
has a /30 or /31 mask?

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