What also happens when your preferred vendor of SONET gear decides to no longer make that product line? (Huawei for example, M1600 was discontinued and the rest in 2012). Is it time to find a new SONET vendor and have a mix of gear or just go all IP which is where the industry seems to be headed? As in bring in the WDMs and just build another network using your existing dark fiber from CO to CO. On top of that.. an OC48 sure aint what it used to be bandwidth wise when you have key locations that use it up so quickly. Sell a couple of OC3/OC12s, provision your own data needs, and you have this little chunk left for the future... 10 gig has to be considered pretty quickly and I really have no wish to replace OC48s with 192s.. Not only do most of our chassis need to be replaced to support the 192 cards.. we have OC48 cards just sitting and collecting dust. Give me 10G ethernet instead. matt On Tue, 25 Jan 2011, Chris Boyd wrote:
On Jan 25, 2011, at 9:21 AM, Paul Timmins wrote:
I think about this, but then think 'Why would I use a technology that can't put 28 T1s in 45 megabit of bandwidth?'
I looked at a system to do TDM over IP a year or so ago. The advantages:
Ease of provisioning - go to a box and tell it take this T1 over there. Do the same at the other end. No mucking about with intervening muxes.
Ease of provisioning - You only need to keep track of a few huge pipes over the optical network, instead of all those tiny ones.
Restoration - You have an additional layer of IP route restoration above any optical redundancy you have.
It's worth looking at for brand new networks where you have lots of capacity to spare. I sure do get a weird deja vu with all this MPLS, VoIP, and ToIP. ATM was gonna do all this stuff too :-)
--Chris
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