Re: Angled Polish Connectors and DWDM

2012-09-30 Thread Daniel Griggs
We have been using APC connectors on our DWDM deployments now for about 5 years and have had no issues with it at all. Additionally, last year we engaged several DWDM system providers and one of the questions we asked them was, did they know of any issues with APC connectors especially with regar

Re: /. Terabit Ethernet is Dead, for Now

2012-09-30 Thread Tom Hill
On 30/09/12 20:05, Jimmy Hess wrote: On 9/29/12, Masataka Ohta wrote: >Jared Mauch wrote: ... >The problem is that physical layer of 100GE (with 10*10G) and >10*10GE are identical (if same plug and cable are used both for >100GE and 10*10GE). Interesting.Well, I would say if there are

Re: /. Terabit Ethernet is Dead, for Now

2012-09-30 Thread Masataka Ohta
joel jaeggli wrote: >>> The problem is that physical layer of 100GE (with 10*10G) and >>> 10*10GE are identical (if same plug and cable are used both for >>> 100GE and 10*10GE). >> Interesting.Well, I would say if there are no technical >> improvements that will significantly improve performa

Re: /. Terabit Ethernet is Dead, for Now

2012-09-30 Thread joel jaeggli
On 9/30/12 12:05 PM, Jimmy Hess wrote: On 9/29/12, Masataka Ohta wrote: Jared Mauch wrote: ... The problem is that physical layer of 100GE (with 10*10G) and 10*10GE are identical (if same plug and cable are used both for 100GE and 10*10GE). Interesting.Well, I would say if there are no

Re: guys != gender neutral

2012-09-30 Thread Owen DeLong
Ugly would usually be considered pejorative. Owen On Sep 29, 2012, at 20:59 , Keith Medcalf wrote: > > Ugly bags of mostly water? > > > --- > () ascii ribbon campaign against html e-mail > /\ www.asciiribbon.org > > >> -Original Message- >> From: Otis L. Surratt, Jr. [mailto:o...

Re: /. Terabit Ethernet is Dead, for Now

2012-09-30 Thread Jimmy Hess
On 9/29/12, Masataka Ohta wrote: > Jared Mauch wrote: ... > The problem is that physical layer of 100GE (with 10*10G) and > 10*10GE are identical (if same plug and cable are used both for > 100GE and 10*10GE). Interesting.Well, I would say if there are no technical improvements that will sig

Re: Angled Polish Connectors and DWDM

2012-09-30 Thread ML
On 9/30/2012 12:46 PM, Mikael Abrahamsson wrote: On Sun, 30 Sep 2012, ML wrote: So far our PMD testing has come back clear. How have you done the PMD testing? For verifying PMD and CD through an actual wavelength (not per-fiber, but through all the ADMs etc), I haven't really been able to f

Re: Angled Polish Connectors and DWDM

2012-09-30 Thread Mikael Abrahamsson
On Sun, 30 Sep 2012, ML wrote: So far our PMD testing has come back clear. How have you done the PMD testing? For verifying PMD and CD through an actual wavelength (not per-fiber, but through all the ADMs etc), I haven't really been able to find a good solution. Suggestions welcome. -- Mi

IETF's PIM Working Group conducting deployment survey

2012-09-30 Thread Adrian Farrel
Hi, After a snafu, the PIM working group has restarted its survey into PIM sparse mode deployments. Please see the email at http://www.ietf.org/mail-archive/web/pim/current/msg02479.html for more information. responses will be anonymised. Many thanks to all operators who are able to respond. A

Re: Angled Polish Connectors and DWDM

2012-09-30 Thread ML
On 9/30/2012 6:14 AM, Aaron Glenn wrote: sent mostly towards the cladding and not the core and therefore. Indeed. I have always held the idea that APC connectors induced greater chromatic and/or polarization mode dispersion -- yet can't find any resources that claim so, nor does that fit in wit

RE: need help about 40G

2012-09-30 Thread Erik Bais
Hi Deric, On the part of 40G, there is a clear financial benefit instead of moving currently towards 100G. If you don't need 100G yet, there is a lot of money to be saved by skipping first generation 100G. 40G ports will only set you back around 1500 US$ per port. Optics are also quite cheap an

Re: Angled Polish Connectors and DWDM

2012-09-30 Thread Aaron Glenn
On Sun, Sep 30, 2012 at 11:52 AM, Igor Ybema wrote: > Hi Aaron, > >> Are there situations when angled connectors are not >> to be used? Are they 'safe' or even recommended for any kind of DWDM >> application? > > To my knowledge APC is always better than PC connectors. APC are used > to eliminate

Re: Angled Polish Connectors and DWDM

2012-09-30 Thread Mikael Abrahamsson
On Sun, 30 Sep 2012, Igor Ybema wrote: To my knowledge APC is always better than PC connectors. APC are used to eliminate back reflections. Due to the angled connector reflections are sent mostly towards the cladding and not the core and therefore. I've been told this is very important in HFC

Re: Angled Polish Connectors and DWDM

2012-09-30 Thread Igor Ybema
Hi Aaron, > Are there situations when angled connectors are not > to be used? Are they 'safe' or even recommended for any kind of DWDM > application? To my knowledge APC is always better than PC connectors. APC are used to eliminate back reflections. Due to the angled connector reflections are se