I hope you enjoy your weekday.
I would like to share and clarify the Form Factor for
Network (even include interface)
we support 1 Gbe & 10 GbE interface now, it will transit
to other speed now.
And we will handle 10, 25, 50 and
sometimes 100 GbE in a server.
Thus it is good to understand clearly for Form Factor now.
Here is speed and distance per interface.
And
- SFP is 1 GbE or Fibre
interface,
- CFP and QSFP28 is 100 GbE
- QSFP28 DD is 200 GbE
You probably have curiosity for + , 28, DD.
+ meaning is mostly advanced feature and speed but same
interface.
- Thus SFP is 1 GbE and SFP+
is 10 GbE supported. (other purpose as well.)
- And QSFP+ is
same.
28 meaning is enhancement from +
- Thus SFP28 could support
25 GbE as same interface.
DD is a littble different.
- DD just put
in 2 ports.
- In my view,
it is not developed yet currently
- Thus in my
view it will support by CFP or QSFP interface type.
Reference:
Appedix: interface type.
SFP
SFP,
small form-factor pluggable for short, is a compact, hot-pluggable transceiver
module used for both telecommunication and data communications applications.
SFPtransceiver can be regarded as the upgrade version of GBIC module. Unlike
GBIC with SC fiber optic interface, SFP is with LC interface and the main body
size of SFP is only about half of GBIC, which makes the SFP space saving. SFP
interfaces a network device mother board (for a router, switch, media converter
or similar devices) to a fiber optic or copper networking cable. Meanwhile, SFP
is a popular industry format supported by many network component vendors. SFP
transceiver modules are designed to support SONET, Gigabit Ethernet, Fibre
Channel, and other communications standards.
SFP+
SFP+
is an enhanced version of the SFP that supports data rates up to 10 Gbit/s.
SFP+ supports 8 Gbit/s Fibre Channel, 10-gigabit Ethernet and Optical Transport
Network standard OTU2. It is a popular industry format supported by many
network component vendors. Initial standard applications focused on 8G Fibre
Channel, 10G Ethernet and 10G Fibre Channel, where the electrical interface to
the host board is a standardized serial interface called SFI. The applications
have expanded to include SONET OC-192, SDH STM-64, OTN G.709, CPRI wireless,
16G Fibre Channel, and the emerging 32G Fibre Channel application.
XFP
XFP
has appeared before the SFP+. It is also a standardized form factor for serial
10 Gb/s fiber optic transceivers. It is protocol-independent and fully
compliant to the following standards: 10G Ethernet, 10G Fibre Channel, SONET
OC-192, SDH STM-64 and OTN G.709, supporting bit rate from 9.95G through 11.3G.
XFP transceivers are used in datacom and telecom optical links and offer a
smaller footprint and lower power consumption than other 10 Gb/s transponders.
The electrical interface to the host board is a standardized serial 10 Gb/s
interface called XFI.
QSFP/QSFP+
QSFP
is short for quad (4-channel) small form-factor pluggable. It is a compact,
hot-pluggable transceiver also used for data communications applications. QSFP+
evolved as the standard to support 10Gb/s data rates per SFF-8436. Compared
with QSFP+, QSFP products support Quarter Small Form-factor Pluggable with the
different data rate so that there is no change in the product solution.
Nowadays, QSFP+ gradually replace QSFP and is widely used by people as it can
provide higher bandwidth.
CFP
CFP,
namely C form-factor pluggable, is a multi-source agreement to produce a common
form-factor for the transmission of high-speed digital signals. The c stands
for the Latin letter C used to express the number 100 (centum), since the
standard was primarily developed for 100 Gigabit Ethernet systems. It can
support a wide range of 40 and 100 Gb/s applications such as 40G and 100G
Ethernet, OC-768/STM-256, OTU3, and OTU4.
Thanks & Regards,
Hoon Jo (CCIE DC #44667, VCIX6-NV,
C-HanaTec151)
Enterprise Resolution Manager,
Korea
Dell EMC | Commercial Solutions Support (CSS)
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