[j-nsp] Inter-racks switch routing recommended practice

[Jeff Wheeler]

On Tue, Jun 4, 2013 at 9:24 PM, Ihsan Junaidi Ibrahim <ihsan at grep.my> wrote:
> I'm thinking multi-areas OSPF/v3 but would a flat OSPF area 0 topology with BGP make more sense? I don't have a lot of exposure in dense datacenter routing so I'm bringing the conventional WAN routing thinking cap into the picture.

This is really a scale question.  I think you'll find that, if you
just dump everything into area 0 for now, it will not be very
difficult to change that later on should you need to scale up.

Note that the EX4550 has a rather small FIB/TCAM even compared to the
EX4200.  For tens of racks, this should be no problem.  It is not what
I would consider a good datacenter aggregation platform, though, due
to its limited FIB.  If you scale up you may find that you need to
move layer-3 aggregation to a different kind of box.

-- 
Jeff S Wheeler <jsw at inconcepts.biz>
Sr Network Operator  /  Innovative Network Concepts