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

[Richard Hicks]

Why get fancy when he can do what he wants with cheap layer 3 switches.

Just draw your ring, put layer 3 switches on the ring and setup
routing between the point to point links.  Summarize IP addresses at
your break points and call it a day.

I have been running this exact setup for the last 6 years, without one
major issue.  We even had some trees take out one of the
point-to-point links and EIGRP happily routed around it.

Rick


On 1/5/07, Fetzer, Bryan <BFetzer at bresnan.com> wrote:
> Affan,
> Are you locked into a Cisco based solution? EAPS does exactly what you
> are asking of it and won't introduce the myriad of issues you'll have
> attempting to make STP do something it was never intended to do (a
> ring). It will also do it more reliably and MUCH faster protection in
> the event of a failure.
> EAPS will scale as large as you want it to, and you can start out with
> very cheap switches to get the job done.
> RPR is a technology I feel needs to be implemented in Cisco's switch
> lineup. At this point RPR is not where it needs to be, I have queried
> Cisco about when they plan on implementing RPR in their switching
> platforms and they have stated they need input from users that they
> actually want to do this. To me, RPR is intended to be "SONET on
> Ethernet". EAPS accomplishes this but is one vendor centric (Extreme
> Networks)
> We are running multiple 1 gb and 10gb Extreme Networks EAPS based rings
> and they do L2 great (we are only asking them to do L2, we do L3 with
> Juniper and Cisco).
>
> http://www.extremenetworks.com/libraries/whitepapers/WEAPS_1293.pdf
>
> Extreme EAPS domains are simple to setup and maintain, might be worth
> looking into because it fits your situation perfectly and you won't have
> the STP management nightmare on your hands.
>
> Bryan F
>
>
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