On Thu, 30 Sep 2010 14:13:11 +1000 Julien Goodwin <na...@studio442.com.au> wrote:
> 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? Don't know. If you want to see what interface model OSPF is using, on a Cisco you use show ip ospf interface <blah> The interface type for loopback interfaces can be a bit surprising and the consequences a bit unexpected if you're intentionally or otherwise not using a /32 prefix length on one. Regards, Mark.
