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PaulChau
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PaulChau,
User Rank: Light Beer
11/28/2018 | 10:29:12 PM
re: Tellium's Optical VPN: What Is It?
People are going to be excited with whatever comes on the market now by ways of an improvement in the internet connections online. Of course something that's labelled as a private optical network is going to be highly sought after when the whole initiative kicks off. Even if people don't necessarily need this particular connection, a lot of eyes are going to be on it just to see if it can deliver what it promises!
Phanatron
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Phanatron,
User Rank: Light Beer
12/4/2012 | 10:19:44 PM
re: Tellium's Optical VPN: What Is It?
Everytime I hear the term Optical VPN I can't help but think of a sales team in a room convincing some engineer that this is really a good idea.
One of the benifits of fiber is security. An optical network is inherently secure to itself. If I order an OC-48 am I not still getting 2.5g of data? You can't oversubscribe my OC-48, regardless of its on a VPN or not. Nobody else is sharing my bandwidth!
I believe that Sycamore has a product that enables a customer to have control of there network down to STS-1 level (SYLVX CNM). Is this really a VPN?
Litewave
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Litewave,
User Rank: Light Beer
12/4/2012 | 10:19:43 PM
re: Tellium's Optical VPN: What Is It?
Author: iprsvp

Optical VPNs has nothing to do with grooming. They are all about selling wavelength services.


Optical services (wavelength or otherwise) are circuit based and by its very nature Private.

I think the other poster was asking whats the use of appending Virtual to something that is already inherently Private! This is not a packet based shared network we're talking about. Sounds to me like Tellium's just jumping on the VPN bandwagon <period>

Technically selling one virtual network per customer.

Tellium's going to have customers laughing behind their backs with this one.

IMHO, the only place for "O-VPN" is in the customer's ability to manage their own optical services. Not in a Service Provider's ability to virtual privatize the optical backbone.

Just the fact that CIENA doesn't have it doesn't make O-VPNs a bad idea. Stop looking everything from ciena's eyes.

Spoken like a true Telliumite ;-)</period>
wdog
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wdog,
User Rank: Light Beer
12/4/2012 | 10:19:43 PM
re: Tellium's Optical VPN: What Is It?
There isn't anything this that isn't already possible with grooming switches and DWDM today. First Tellium created "core grooming" to attempt to cover the fact that their switch can't really groom and now this. Waste of money on bad marketing. The money would be a lot better spent on developing a real grooming switch.
iprsvp
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iprsvp,
User Rank: Light Beer
12/4/2012 | 10:19:43 PM
re: Tellium's Optical VPN: What Is It?
Optical VPNs has nothing to do with grooming. They are all about selling wavelength services.
At the same time it has to do with the actual traffic in the network. Technically selling one virtual network per customer. Just the fact that CIENA doesn't have it doesn't make O-VPNs a bad idea. Stop looking everything from ciena's eyes.
gea
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gea,
User Rank: Light Beer
12/4/2012 | 10:19:43 PM
re: Tellium's Optical VPN: What Is It?
I think you Lightreading guys may be a little confused here. For instance,...

"Now TelliumGÇÖs software allows a service provider to carve up a single OC192 (10 Gbit/s) pipe and allocate one OC48 wavelength to one customer and another OC48 wavelength to a different customer. Each of the OC48 wavelengths in the OC192 pipe are treated as separate networks and securely partitioned from the other wavelengths for the duration of the transmission."

Now nothing can take an OC-192 (which is a single wavelength at 10 Gb/s), and split it into 4 OC-48 "wavelengths". What the Tellium box MIGHT be doing (but I strongly doubt it), is allowing different customers to access separate STS-48s inside the OC-192. But I strongly doubt that...this would require the management overhead in each of the STS-48s to remain intact, a feature that would require very special hardware. In addition, that's not what O-VPNs have been about in the literature.

In all liklihood, the O-VPN capability is a software-based one exclusively. This software allows different users to 1) see and access all wavelengths in a network of Tellium boxes, without seeing and accessing the wavelengths of other users. ore importantly, it 2) will allow different users to actually reconfigure their portion of the total optical network. In other words, they can provision and cross connect at the wavelength level as they see fit, creating a "network within a network" of fairly arbitrary topology.

That's the essence of O-VPNs, and I would doubt that this extends to the TDM level (ie, a single STS-48 inside an OC-192). If it does, then it would have to be verified that the users network management information is preserved as that STS-48 traverses the network.

mordecai
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mordecai,
User Rank: Light Beer
12/4/2012 | 10:19:42 PM
re: Tellium's Optical VPN: What Is It?
all right--

can someone please define for me, what the following mean--

'optical': as in I work in Nortel's optical division

'optical bandwidth': as in I just leased some optical bandwidth, as in someone told me next year optical bandwidth would be free

'optical service': as in my next gen carrier offers optical services

Please? Pretty Please?



yit
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yit,
User Rank: Light Beer
12/4/2012 | 10:19:42 PM
re: Tellium's Optical VPN: What Is It?
Perhaps they should call it O-RPN (*real* private network)?
twistedcopper
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twistedcopper,
User Rank: Light Beer
12/4/2012 | 10:19:33 PM
re: Tellium's Optical VPN: What Is It?
my company is upgrading it's connection from a T1 this week to an oc-48 and we're doing the same for all of our other remote offices. why would any company go for a lower speed when they can get an oc-48??? god bless tellium for bringing bandwidth to the world!!!! sts-1 grooming is for wimps!!!!!!
-twisted
skeptic
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skeptic,
User Rank: Light Beer
12/4/2012 | 10:19:33 PM
re: Tellium's Optical VPN: What Is It?
Everytime I hear the term Optical VPN I can't help but think of a sales team in a room convincing some engineer that this is really a good idea.
-----------------

I think its simplier than that. The sales team
is basically trying to attach their product
to the hot buzzword of the moment (VPNs). Even
though their product has nothing to do with
VPNs and doesn't deliver anything all that useful.

You could call it a "PN", but there is nothing
virtual about what they are doing. And at a
minimum OC-48 granualarty, I dont see many
people who are going to be all that excited by
this.
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