[177987] in North American Network Operators' Group
Re: MultiMode Fiber Connectivity... (850nm) Power Question
daemon@ATHENA.MIT.EDU (Bob Evans)
Wed Feb 11 16:06:31 2015
X-Original-To: nanog@nanog.org
In-Reply-To: <582468259.1095514.1423687699056.JavaMail.zimbra@snappytelecom.net>
Date: Wed, 11 Feb 2015 13:06:23 -0800
From: "Bob Evans" <bob@FiberInternetCenter.com>
To: "Faisal Imtiaz" <faisal@snappytelecom.net>
Cc: NANOG <nanog@nanog.org>
Reply-To: bob@FiberInternetCenter.com
Errors-To: nanog-bounces@nanog.org
Thank You
Bob Evans
CTO
> Hello,
>
> I was looking for feedback on the following question:-
>
> When connecting two MM SFP/SFP+/XFP 's together...(short range).
>
> What should be the best practice receive power range ?
>
> Is it true that if the rx power is higher than (x?) then it shortens the
> life of the optics ?
Yes, but thats only true about single mode frequencies not multimode (MM)
because those are not as powerful. All MM is expected to go a very limited
distance, so levels are never high. We have MM 3 foot jumpers between gear
running for years.
> (assumption being made here is that MAX Rx Power is not being exceed as
> per the spec sheets of the optics)
>
> Regards
>
> Faisal Imtiaz
> Snappy Internet & Telecom
> 7266 SW 48 Street
> Miami, FL 33155
> Tel: 305 663 5518 x 232
>
> Help-desk: (305)663-5518 Option 2 or Email: Support@Snappytelecom.net
>
