[j-nsp] routing optimal path or suboptimal path

[Mark Tinka]

On Sunday 26 October 2008 00:08:00 Andrew Jimmy wrote:

> How do you guys practically configure this. What do you
> mean by this that default routing is sub-optimal and
> unsupported? So what you have to do make it optimal.

What I simply mean is that each router's infrastructure and 
Loopback addresses must be propagated within the IGP - 
either OSPF or IS-IS.

A route to each node must exist, explicitly, in the routing 
and forwarding tables of each router in the network.

Default and summary routing may not necessarily choose the 
best (shortest) path to a node, as it just forwards the 
traffic to the next hop, which may or may not be optimal.

> It would be nice if you can further explain this.

For BGP, what I meant to say is that there are both 
technical and commercial reasons to consider that can 
influence how routing decisions can be made.

The strategy for each network would differ based on these 
(and perhaps, other) factors.

Cheers,

Mark.
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