[c-nsp] gigabit ethernet ring for metro ethernet deployment

[John Osmon]

On Thu, Jan 04, 2007 at 11:57:39PM +0700, Affan Basalamah wrote:
[...]
> The goals that I was trying to achieve is to design and deploy metro
> ethernet ring for MAN backbone with the smallest budget possible, and
> I find that metro gigabit ethernet switch is quite cheap these days,
> compared to the RPR and sonet/sdh-based solution.

It depends on your real goals.  I serve some commodity IP access via
a ring of 3550s.  Spanning-tree keeps the "backhaul" ring loop free,
and we use the layer-3 features of the 3550s to serve individual 
customers.

I'm not sure I'd scale it out too much further, but it's a simple
design, and works for us at this point in time.