JM D.
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Why APC patch cords are not recommended wirth 10GBase SFP+ Gbics?
Hello,
I've read on some datasheets of network switches, that the APC patch cords are not recommended (or not supported) with 10GBase SFP+ Gbics?
Is someone know why?
We plan to have an optical fiber cable multimode infrastructure, with SC/APC panels. It' may be not good with the perspective of 10Gbase evolution? SC/UPC would be better?
Thank you in advance for your advice.
Jm
I've read on some datasheets of network switches, that the APC patch cords are not recommended (or not supported) with 10GBase SFP+ Gbics?
Is someone know why?
We plan to have an optical fiber cable multimode infrastructure, with SC/APC panels. It' may be not good with the perspective of 10Gbase evolution? SC/UPC would be better?
Thank you in advance for your advice.
Jm
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ASKER
Hello,
I thank you for your replies.
For the moment I've no problems, because I talk about a future installation.
Well, So I could use an APC connector on the optical fiber panels side (and a non APC, on the Gbic side).
But, why switch's providers give this comment for the SFP+ only ? In all cases, we should no mix connector types.
There may be a bigger tolerance (with the air gap) for lower speeds?
JM
I thank you for your replies.
For the moment I've no problems, because I talk about a future installation.
Well, So I could use an APC connector on the optical fiber panels side (and a non APC, on the Gbic side).
But, why switch's providers give this comment for the SFP+ only ? In all cases, we should no mix connector types.
There may be a bigger tolerance (with the air gap) for lower speeds?
JM
It has nothing to do with speed. Look at page 5 of this doc (or search for "APC"). It's talking about 1Gb SFP modules and patch cables:
Cisco mandates PC or UPC for connecting to GBIC, SFP, SFP+. There are no problems with rotation. Patch cables are easy to stock for network admins. Cisco gear goes through another layer (1 or 2) before hitting something like a GPON/BPON. My fiber at the house had a gigabit Ethernet handoff over Cat5e.
Put an 8-degree face against a flat face, and you have an air gap, end-angle mismatch, connector reflectance, whatever you want to call it.
It's not a new problem. NANOG folks have been talking about dealing with moves to an all-APC infrastructure for several years.
Cisco mandates PC or UPC for connecting to GBIC, SFP, SFP+. There are no problems with rotation. Patch cables are easy to stock for network admins. Cisco gear goes through another layer (1 or 2) before hitting something like a GPON/BPON. My fiber at the house had a gigabit Ethernet handoff over Cat5e.
Put an 8-degree face against a flat face, and you have an air gap, end-angle mismatch, connector reflectance, whatever you want to call it.
It's not a new problem. NANOG folks have been talking about dealing with moves to an all-APC infrastructure for several years.
ASKER
You are certainly right.
It is just that the formulation is perhaps a little ambiguous on the documentation of the manufacturers (HP in particular).
In any case, one should not connect an APC connector to an UPC (or a PC). This is true on the transceiver side or on the optical fiber panel.
Thanks for you replies.
Jm
It is just that the formulation is perhaps a little ambiguous on the documentation of the manufacturers (HP in particular).
In any case, one should not connect an APC connector to an UPC (or a PC). This is true on the transceiver side or on the optical fiber panel.
Thanks for you replies.
Jm
https://supportforums.cisco.com/discussion/12446576/lcapc-fiber-patch-cord-connection-cisco-catalyst-6500-cisco-access-3750-switches
I've never had to research this topic because I never knew the difference until now, but the sfp itself is physically a flat connector and would not work with an apc connector. As the one forum says, you would just need to order hybrid patch cables with upc on the end connecting to the sfp, and apc connecting to the patch panel.