Re: what does dark fiber mean? [7:18718]
we pay $30,000/month for ours... But it spans aprox. 20+ miles... shorter runs would be less. -Patrick Mark Odette II 09/06/01 21:50 PM So- Just out of curiousity- Anybody have a rough amt. that Dark Fiber runs for?? Is it dependent upon the mileage, or is it rated out at a flat monthly fee. You'ld think that if it was only a couple hundred bucks a month, that all kinds of ISP startups would be using it to put their infrastructure together, and just have a specific site as their gateway to an upstream provider. Tell me if I'm coockoo about this theory. Mark Odette II - Original Message - From: Patrick Ramsey To: Sent: Thursday, September 06, 2001 7:03 PM Subject: Re: what does dark fiber mean? [7:18718] Close... Actually it's dark when nothing is attached, but it remain's dark even when CPE is attached. Dark fiber, the term is used by providers meaning that they lease you fiber that does not traverse their network. So technically, you can run anything across it as you wish. Take this example... I have a sonet ring from a local carrier and it is attached to their ATM infrastructure at 155mb. they (the carrier) are not really lighting the fiber but since it is a sonet node it is limited to ATM. (Or packet over sonet) but you still only get the bandwidth you pay for. However, if I purchase dark fiber meaning that it is not lit by the carrier, then I can run ATM across it at oc3, oc12, oc48, oc192, etc OR I can run 100fx or gig across it... However much money I feel like spending on the equipment is what will run across it. -Patrick Tony van Ree 09/06/0106:24PM Hi, Dark fibre is when you have, buy or rent a fibre cable that is terminated but has no equipment connected. Devices using fibre have either infra red or laser light thus making the cale non dark. Hope this helps. Teunis, Hobart, Tasmania Australia On Wednesday, September 05, 2001 at 10:16:07 PM, david wrote: Thanks, david -- www.tasmail.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=19120t=18718 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: what does dark fiber mean? [7:18718]
We pay $900/mile/month for ours.. Patrick Ramsey wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... we pay $30,000/month for ours... But it spans aprox. 20+ miles... shorter runs would be less. -Patrick Mark Odette II 09/06/01 21:50 PM So- Just out of curiousity- Anybody have a rough amt. that Dark Fiber runs for?? Is it dependent upon the mileage, or is it rated out at a flat monthly fee. You'ld think that if it was only a couple hundred bucks a month, that all kinds of ISP startups would be using it to put their infrastructure together, and just have a specific site as their gateway to an upstream provider. Tell me if I'm coockoo about this theory. Mark Odette II - Original Message - From: Patrick Ramsey To: Sent: Thursday, September 06, 2001 7:03 PM Subject: Re: what does dark fiber mean? [7:18718] Close... Actually it's dark when nothing is attached, but it remain's dark even when CPE is attached. Dark fiber, the term is used by providers meaning that they lease you fiber that does not traverse their network. So technically, you can run anything across it as you wish. Take this example... I have a sonet ring from a local carrier and it is attached to their ATM infrastructure at 155mb. they (the carrier) are not really lighting the fiber but since it is a sonet node it is limited to ATM. (Or packet over sonet) but you still only get the bandwidth you pay for. However, if I purchase dark fiber meaning that it is not lit by the carrier, then I can run ATM across it at oc3, oc12, oc48, oc192, etc OR I can run 100fx or gig across it... However much money I feel like spending on the equipment is what will run across it. -Patrick Tony van Ree 09/06/0106:24PM Hi, Dark fibre is when you have, buy or rent a fibre cable that is terminated but has no equipment connected. Devices using fibre have either infra red or laser light thus making the cale non dark. Hope this helps. Teunis, Hobart, Tasmania Australia On Wednesday, September 05, 2001 at 10:16:07 PM, david wrote: Thanks, david -- www.tasmail.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=19122t=18718 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: what does dark fiber mean? [7:18718]
So- Just out of curiousity- Anybody have a rough amt. that Dark Fiber runs for?? Is it dependent upon the mileage, or is it rated out at a flat monthly fee. You'ld think that if it was only a couple hundred bucks a month, that all kinds of ISP startups would be using it to put their infrastructure together, and just have a specific site as their gateway to an upstream provider. Tell me if I'm coockoo about this theory. Mark Odette II - Original Message - From: Patrick Ramsey To: Sent: Thursday, September 06, 2001 7:03 PM Subject: Re: what does dark fiber mean? [7:18718] Close... Actually it's dark when nothing is attached, but it remain's dark even when CPE is attached. Dark fiber, the term is used by providers meaning that they lease you fiber that does not traverse their network. So technically, you can run anything across it as you wish. Take this example... I have a sonet ring from a local carrier and it is attached to their ATM infrastructure at 155mb. they (the carrier) are not really lighting the fiber but since it is a sonet node it is limited to ATM. (Or packet over sonet) but you still only get the bandwidth you pay for. However, if I purchase dark fiber meaning that it is not lit by the carrier, then I can run ATM across it at oc3, oc12, oc48, oc192, etc OR I can run 100fx or gig across it... However much money I feel like spending on the equipment is what will run across it. -Patrick Tony van Ree 09/06/01 06:24PM Hi, Dark fibre is when you have, buy or rent a fibre cable that is terminated but has no equipment connected. Devices using fibre have either infra red or laser light thus making the cale non dark. Hope this helps. Teunis, Hobart, Tasmania Australia On Wednesday, September 05, 2001 at 10:16:07 PM, david wrote: Thanks, david -- www.tasmail.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18889t=18718 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: what does dark fiber mean? [7:18718]
Some companies have run fiber optic lines in certain areas, mostly metropolitan areas, and they sell fiber runs to companies that require them. Dark means that the fiber carries no services when you get it, it is just a cable between 2 locations, you can then connect the fiber to equipment at both ends and run services over it. So I could order a dark fiber connection between downtown New York and uptown New York, and connect it to Gig E interfaces at both ends. Guy -Original Message- From: david [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 05, 2001 10:16 PM To: [EMAIL PROTECTED] Subject: what does dark fiber mean? [7:18718] Thanks, david Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18724t=18718 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: what does dark fiber mean? [7:18718]
Could i use dark fiber to connect 2 OC48 module on 6509s ? if ok,any difference from GE module connections on 6509s? Thanks, david Lupi, Guy wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Some companies have run fiber optic lines in certain areas, mostly metropolitan areas, and they sell fiber runs to companies that require them. Dark means that the fiber carries no services when you get it, it is just a cable between 2 locations, you can then connect the fiber to equipment at both ends and run services over it. So I could order a dark fiber connection between downtown New York and uptown New York, and connect it to Gig E interfaces at both ends. Guy -Original Message- From: david [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 05, 2001 10:16 PM To: [EMAIL PROTECTED] Subject: what does dark fiber mean? [7:18718] Thanks, david Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18729t=18718 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: what does dark fiber mean? [7:18718]
when you order dark fiber, you are getting fiber with nothing on it. it currently isn't running ATM, SONET, Gigabit Ethernet, or Fibre Channel. it's not providing a wavelength, or single or group of lambdas for you to use. you are getting the real thing. you want it to be good fiber (like corning e-leaf, or lucent truewave, etc) so you can use the most possible bandwidth on it (very high bandwidth applications in the 1/3 Tbps to Tbps+ range). otherwise, you probably don't need it (but it sure would be nice to have, if you got it on the cheap, or free). consider using wavelength services or [imuxed?] T1/DS3 or wireless local-loop instead. generally, when you get dark fiber, it means you get a 2F hand-off (sometimes 4F depending on the provider). the dark fiber is run SONET-ring style (assuming TDM is your method) with 2F/4F BLSR or UPSR and hopefully goes through a W-DCS and/or ADM (even better would be Optical, WDM-capable equivalents of the above) at the Gateway/Telco/Provider side-of-things. You don't want the 2F/4F hand-off to be collapsed or 'folded', meaning that the preferred method is two distinctly different paths into the building and also outside and also into the cable plant and also using APS 1+1 or 1:1 at the electrical level on the cards/equipment (1+1 is preferred, I guess). -dre david wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Thanks, david Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18732t=18718 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: what does dark fiber mean? [7:18718]
david wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Could i use dark fiber to connect 2 OC48 module on 6509s ? if ok,any difference from GE module connections on 6509s? if you were using DPT, yes. otherwise, you probably wouldn't want to. Maybe you could with GbE. I think you'd be wasting fiber if you weren't using WDM. If you got a 2F hand-off, you probably want to get an ADM and run it with APS 1:1 and 2F BLSR. That's just a guess, you might not want to protect it and use it all instead. In that case, you'd probably want two 6509's and use OSPF/ISIS/EIGRP to protect your IP investment. GbE would be cheaper than OC-48 blades, so that doesn't sound like too bad of an idea. People generally use SONET protection, but you don't have to if you don't want to. More power to that. What do you have on both sides? What's the application? What problem are you trying to solve? : -dre Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18733t=18718 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: what does dark fiber mean? [7:18718]
I just want to connect two campus network ,which 8 kms apart. i use each 6509 as the core switch at each campus. One 6509 will uplink to a 7609 router to access internet . I also wonder the connection means between 7609 and 6509,they are at one NOC. Thanks, David dre wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... david wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Could i use dark fiber to connect 2 OC48 module on 6509s ? if ok,any difference from GE module connections on 6509s? if you were using DPT, yes. otherwise, you probably wouldn't want to. Maybe you could with GbE. I think you'd be wasting fiber if you weren't using WDM. If you got a 2F hand-off, you probably want to get an ADM and run it with APS 1:1 and 2F BLSR. That's just a guess, you might not want to protect it and use it all instead. In that case, you'd probably want two 6509's and use OSPF/ISIS/EIGRP to protect your IP investment. GbE would be cheaper than OC-48 blades, so that doesn't sound like too bad of an idea. People generally use SONET protection, but you don't have to if you don't want to. More power to that. What do you have on both sides? What's the application? What problem are you trying to solve? : -dre Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=18736t=18718 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
