[c-nsp] OSPF design

[Mark Tinka]

On Monday, October 25, 2010 10:21:40 pm Benjamin Lovell 
wrote:

> If you are doing MPLE TE then you really don't want more
> than one area as then you get into inter-area TE tunnels
> which makes TE optimal path selection harder(not
> possible in some cases).

Of course, you can fix this problem by running expanded 
loose hops to build the LSP. It is cumbersome, especially if 
you're trying to build protection/multiple LSP's between 
end-points, but will work in a multi-area/multi-level IGP 
deployment.

Juniper are even able to automate this (no need to specify 
the LSR's in the path) provided CSPF remains enabled 
(applies to OSPF, still checking on IS-IS).

Cheers,

Mark.
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