Corning Optical Fiber LEAF(R) Can Used In Indoors And Inter-floor
Dec 19, 2007
I just came across this listing for Corning Optical Fiber LEAF(R) on eBay [url]. I've never used optic fiber cables before and want to experiment with them for indoor and inter-floor(friend below) use. The listing says that the coating is CPC6, which is some kind of acrylic coating over the fiber.
My question is: Can the above cable be used without further sleeving or some other protection/covering over it? I read somewhere that the cable must be reinforced and covered with PVC jacket or something,
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Oct 11, 2009
Can you make a recommendation for a switch-based L3 router which can
- hold a moderate number of routes (interface routes, a few hundred statics + default)
- OSPF and BGP
- MST
- 1024 layer-3 dot1q subinterfaces (or maybe VLAN interfaces)
with
+ traffic policing in and out per subinterface/vlan
+ VRRP/HSRP/NSRP
- IPv4 & IPv6 native
- 2x GigE ports
- Not tip-over under 1gbps DDoS towards a VLAN interface.
I've been using 3560Gs, but they seem to lack the output traffic policing. I'd prefer to have subinterfaces which don't run spanning-tree, versus Vlan Interfaces to a trunk interface which runs spanning-tree. These switches sit at the L3 boundary between two L2 networks.
Cost is a big factor; but I also must carry vendor licenses & support contract, if the vendor asserts that not doing so is illegal in US.
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May 3, 2008
Ive just being doing some pings and tracerts on burst and it looks to me they have there new X0 fiber installed i still get around 20 hops and average 120ms ping any body found the new transit any quicker, im still deciding weather to go back to burst or not, the speeds are pretty much the same but it is too early to justify there stability
What do you think so far?
Tracing route to burst.net [66.96.192.201]
over a maximum of 30 hops:
1 53 ms 98 ms 98 ms api.home [192.168.1.254]
2 38 ms 36 ms 35 ms 217.41.191.122
3 35 ms 35 ms 36 ms 217.47.41.161
4 36 ms 35 ms 35 ms 217.41.175.13
5 33 ms 36 ms 36 ms 217.41.175.126
6 139 ms 189 ms 191 ms 217.41.175.54
7 43 ms 34 ms 35 ms 217.47.74.99
8 35 ms 37 ms 36 ms core1-pos12-1.bletchley.ukcore.bt.net [194.72.31
.5]
9 40 ms 38 ms 44 ms core1-pos0-7-0-12.ealing.ukcore.bt.net [62.6.200
.109]
10 38 ms 37 ms 38 ms transit1-gig8-0-0.ealing.ukcore.bt.net [62.6.200
.110]
11 38 ms 37 ms 35 ms t2c1-p11-0.uk-eal.eu.bt.net [166.49.168.17]
12 37 ms 37 ms 37 ms t2c2-p3-2.uk-lon1.eu.bt.net [166.49.164.138]
13 39 ms 37 ms 37 ms t2a1-ge7-0-0.uk-lon1.eu.bt.net [166.49.135.110]
14 39 ms 37 ms 37 ms 195.66.224.130
15 37 ms 37 ms 37 ms p5-0-0d0.rar1.london-en.uk.xo.net [71.5.174.133]
16 110 ms 111 ms 111 ms p1-0-0d0.rar1.nyc-ny.us.xo.net [65.106.0.118]
17 118 ms 119 ms 117 ms 207.88.14.85.ptr.us.xo.net [207.88.14.85]
18 257 ms 209 ms 206 ms 207.88.14.86.ptr.us.xo.net [207.88.14.86]
19 128 ms 130 ms 127 ms 207.88.182.62.ptr.us.xo.net [207.88.182.62]
20 120 ms 121 ms 121 ms burst.net [66.96.192.201]
Trace complete.
C:UsersMe>ping 66.96.192.201
Pinging 66.96.192.201 with 32 bytes of data:
Reply from 66.96.192.201: bytes=32 time=121ms TTL=48
Reply from 66.96.192.201: bytes=32 time=122ms TTL=48
Reply from 66.96.192.201: bytes=32 time=122ms TTL=48
Reply from 66.96.192.201: bytes=32 time=120ms TTL=48
Ping statistics for 66.96.192.201:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 120ms, Maximum = 122ms, Average = 121ms
C:UsersJames>
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Mar 27, 2008
Has anyone looked into getting dark fiber verse going direct with a transport provider? How much does dark fiber cost compared to say a Gig-E transport line? What kind of equipment is needed on each end of the fiber, and how much does this equipment cost? At what point does a provider look for dark fiber verse getting transport for a Lit provider?
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Jan 12, 2008
I saw their advertisement on WHT and trying to contact their sales and i got nice reply from their sales.
i want know if everyone used them?How about their support, uptime etc ?
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May 26, 2007
Assuming that one was to get a local office in a town, how would someone find building or area that had a high availbility of fiber nearby, but was not a datacenter? Are their fiber maps for each big city? Does anyone have fiber maps for Houston, Texas? I would be interested in seeing these maps if possible.
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Nov 13, 2007
A colo place in uk as me if I want a single drop or redundant drop to run my fiber... what do they mean?
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Jun 23, 2009
We have a large amount of multimode fiber coiled up under our raised floor that needs to be removed. The end that remains intact is running to a SAN cabinet that is very densely populated and our vendor has suggested cutting the fiber to make it easier to remove without disturbing the remaining active fiber.
Does anyone have any experience cutting fiber in a data center environment ?
Are glass fragments or any other debris a concern ?
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Feb 14, 2008
Does anyone have any information on a company called BROOKS FIBER COMMUNICATIONS - TEXAS? They are showing up in a couple CO's on the telcodata.us website.
I think they might have been bought out, possibly by Verizon/MCI. If anyone can share any information about this company that would be great. Nothing seems to show up in google.
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May 21, 2007
Me and my friend are looking to place a few servers for a soho (3 servers or so). We need advise as the incoming connectivity will be fiber so we need to know what do we need to receive that fiber, we opted to go for the catalyst 2950 for the switch but if there's a good fiber switch,
Fiber will be 10mbps.
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Jun 26, 2007
I put this in the co-location section since I am co-locating a server that I host a few Websites on. The server is located in the Pacfic Northwest at a hosting company out there. As you may know, this is a "more remote" area of the United States.
Today, the company lost all Internet access when a Fiber optic cable went down. Not only was my stufff down but the entire hosting company was down. In 10 years of doing Internet development, I have never seen this happen to any hosting company I have worked with no matter how good or bad they were. On top of that, it happened one time last year as well.
According to my co-location provider, the problem happened a long way up stream. SO far that the lines cannot be backed up. Is this true? Could a fiber optic cable fail at some point where it cannot be switched over to another line?
I don't know if I should I believe that or not. It would seem to me that it is a matter of money and they may not have a back-up system in place if the pipe goes down. Is it possible? Who's fault is it?
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May 24, 2007
who does fiber to the business parks in Troy, just off 75.
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Aug 20, 2007
Telia is reporting a fiber cut in the US - any other carriers impacted?
from Telia:
We regret to advise that we are currently experiencing a cable cut in
the United States. This outage is causing degradation in our IP
backbone, which may affect your service.
The fault has been brought to the attention of senior management, and we
are actively working to resolve the fault. Unfortunately we do not know
when the fault will be resolved.
We will update you as soon as we have further information, and apologise
for the inconvenience caused to you and your customers.
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Feb 16, 2009
Here is the screen shot of the "mtr" running from two servers:
Server1: Fibre optic line from Tata Communication
Server2: DSL line from Tata Communications
Source servers are located in Kolkata India
Target server is located in Fremont California.
The fiber optic cable has:
A. Higher ping time and
B. Higher standard deviation
compared to the DSl line.
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