Re: [uknof] MTP Single Mode cables - Wanted

[John Laban]

Guys,

Making your fibre choice now is a little more problematical than it was
last year. Its interesting to see what the hyper scale data centres are now
doing and how the new 100G "lite" 500m SM duplex costs have been slashed by
x10 through some smart re-engineering of the 10km 100G SM transceiver.
There is also a panel discussion at the 10.25 min point in the following
video were various large data centre players describe how they do things.

https://www.youtube.com/watch?v=EB0PsIkbQ94

One thing that is clear is that SM fibre transceivers are rapidly falling
in price. Some of the big hyper scale players are now aggressively
eliminating MM fibres.

I also discovered recently that Google invested $38m into a fibre
transceiver manufacturer in China.

Hope this helps show the new trends so it helps with your strategic fibre
decisions.

John



On 23 August 2016 at 12:04, Rob Evans  wrote:

> > I seem to recall a large academic network having saved over a million
> pounds by
> > using MMF optics purely for links between their packet and optical
> platforms
> > that would typically be in adjacent racks, although that may have been a
> few
> > years ago and suffering early adopter pricing for wanting the highest
> capacity
> > interface on the market at that point :)
>
> This was largely the difference in price between ~112 100GBASE-LR4 CFP
> pluggables and the same number of 100GBASE-SR10 ones and couldn’t support
> 10x10MSA.
>
> The price difference is still substantial, but we’re not sticking with
> SR10s on new installs.
>
> Rob
>
>
>

Re: [uknof] MTP Single Mode cables - Wanted

[Oliver Elliott]

MTP is generally only available in OM3 and OM4 in my experience, never seen
them in singlemode. We buy them from swalecomponents.com (Siemon branded).

On 22 August 2016 at 22:09, Charlie Boisseau  wrote:

> > On 22 Aug 2016, at 20:56, Phil Bartlett 
> wrote:
> >
> > I'm needing to buy  some MTP (Female) 12 way fanout cables (Single mode
> LC)
> >
> > Can anyone recommend anyone in the London or surrounding area?
>
>
>
> http://www.completeconnect.co.uk/
>
> Can vouch for quality.  Easy to work with.  Have UK assembly facility, and
> can outsource to China for bulk orders.
>
> C
>
>
>


-- 
Oliver Elliott
Senior Network Specialist
IT Services, University of Bristol
t: 0117 39 (41131)

Re: [uknof] MTP Single Mode cables - Wanted

[James Blessing]

On 23 August 2016 at 12:59, Nick Hilliard  wrote:

> Tom Hill wrote:
> > Answer: because the "short reach" optics are cheaper. But why do they
> > exist if the "long reach" ones work over short distances?
>
> this comes down to whether SMF transceivers are inherently more
> expensive than MMF, or whether they're more expensive because they're
> produced in lower quantities and don't have the same economy of scale.
>

MMF optics use cheaper components (LED or VCSEL) for the optics making them
cheaper to produce, if everything were SMF then there may be the
opportunity for finding a cheaper solution for SMF optics but while MMF
exists there really isn't...

J

-- 

James Blessing
07989 039 476

Re: [uknof] MTP Single Mode cables - Wanted

[Nick Hilliard]

Tom Hill wrote:
> Answer: because the "short reach" optics are cheaper. But why do they
> exist if the "long reach" ones work over short distances?

this comes down to whether SMF transceivers are inherently more
expensive than MMF, or whether they're more expensive because they're
produced in lower quantities and don't have the same economy of scale.

If the latter, the entire situation is chicken-and-egg which is
benefiting exactly no-one.

Nick

Re: [uknof] MTP Single Mode cables - Wanted

[Tom Hill]

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On 23/08/16 12:34, a.l.m.bu...@lboro.ac.uk wrote:
> ...we have SM too - how will installing SM have helped? the short
> range optics are MM. dont work with SM.

10GBASE-LR works over 1m of SM, and probably OM3/OM4, too.  So why buy
two types of optics for long & short reach?

Answer: because the "short reach" optics are cheaper. But why do they
exist if the "long reach" ones work over short distances?

That's the point Brandon's trying to make; why do we have two sets of
standard, when every new generation of Ethernet begets a new
generation of MMF.

Wouldn't it be better if we didn't have multi-mode standards any more?

- -- 
Tom Hill
Network Manager

Bytemark Hosting
http://www.bytemark.co.uk/
tel. +44 1904 890 890
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Re: [uknof] MTP Single Mode cables - Wanted

[A . L . M . Buxey]

Hi,

> When you have to replace your OM1/OM2 with OM3 and then OM4 as you
> move to higher speeds you might as well have installed SM originally

...we have SM too - how will installing SM have helped? the short range optics
are MM. dont work with SM.

alan

Re: [uknof] MTP Single Mode cables - Wanted

[Brandon Butterworth]

On Tue Aug 23, 2016 at 10:35:10AM +, a.l.m.bu...@lboro.ac.uk wrote:
> Hi,
> 
> > Only used them SM, never used them MM. MM is old junk, people should
> 
> multimode is used for 10G and 40G short range optics for a start..

Missing the point, I didn't say it's not used, I said stop buying it
and SM will come down in price.

When you have to replace your OM1/OM2 with OM3 and then OM4 as you
move to higher speeds you might as well have installed SM originally

brandon

Re: [uknof] MTP Single Mode cables - Wanted

[Paul Cairney]

On 23/08/16 12:04, Rob Evans wrote:
>> I seem to recall a large academic network having saved over a million pounds 
>> by
>> using MMF optics purely for links between their packet and optical platforms
>> that would typically be in adjacent racks, although that may have been a few
>> years ago and suffering early adopter pricing for wanting the highest 
>> capacity
>> interface on the market at that point :)
> 
> This was largely the difference in price between ~112 100GBASE-LR4 CFP 
> pluggables and the same number of 100GBASE-SR10 ones and couldn’t support 
> 10x10MSA.
> 
> The price difference is still substantial, but we’re not sticking with SR10s 
> on new installs.
> 

Sounds like a reasonable approach to run the numbers and make an informed
decision, although it will be interesting to see how much demand there is for
delivering > 100g over MMF ;)

P

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Re: [uknof] MTP Single Mode cables - Wanted

[Rob Evans]

> I seem to recall a large academic network having saved over a million pounds 
> by
> using MMF optics purely for links between their packet and optical platforms
> that would typically be in adjacent racks, although that may have been a few
> years ago and suffering early adopter pricing for wanting the highest capacity
> interface on the market at that point :)

This was largely the difference in price between ~112 100GBASE-LR4 CFP 
pluggables and the same number of 100GBASE-SR10 ones and couldn’t support 
10x10MSA.

The price difference is still substantial, but we’re not sticking with SR10s on 
new installs.

Rob

Re: [uknof] MTP Single Mode cables - Wanted

[Paul Cairney]

On 23/08/16 11:35, a.l.m.bu...@lboro.ac.uk wrote:
> Hi,
> 
>> Only used them SM, never used them MM. MM is old junk, people should
> 
> multimode is used for 10G and 40G short range optics for a start..
> 

I seem to recall a large academic network having saved over a million pounds by
using MMF optics purely for links between their packet and optical platforms
that would typically be in adjacent racks, although that may have been a few
years ago and suffering early adopter pricing for wanting the highest capacity
interface on the market at that point :)

P


-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

Re: [uknof] MTP Single Mode cables - Wanted

[A . L . M . Buxey]

Hi,

> Only used them SM, never used them MM. MM is old junk, people should

multimode is used for 10G and 40G short range optics for a start..


alan

Re: [uknof] MTP Single Mode cables - Wanted

[Brandon Butterworth]

> > MTP is generally only available in OM3 and OM4 in my experience,
> >  never seen them in singlemode

Only used them SM, never used them MM. MM is old junk, people should
stop buying it then they won't be able to charge the slight (or huge if
you by Cisco/etc branded) premium for proper SM stuff.

I've used Complete Connect for speed but use FibreStore for stuff
where I'm not in a hurry

brandon

Re: [uknof] MTP Single Mode cables - Wanted

[Charlie Boisseau]

> On 23 Aug 2016, at 08:56, Oliver Elliott  wrote:

> MTP is generally only available in OM3 and OM4 in my experience, never seen 
> them in singlemode. We buy them from swalecomponents.com (Siemon branded).

We use MTP with singlemode regularly for bulk DC cross-connects.

FibreStore stock all sorts of MTP cables, assemblies, panels etc in Singlemode 
format.  Examples:

http://www.fs.com/products/34965.html
http://www.fs.com/products/40731.html

C


Charlie Boisseau
Fluency Communications
(Commsworld Ltd T/A)

T: +44 (0) 330 121 1000
Twitter: @charlieboisseau
www.fluency.net.uk 
char...@fluency.net.uk