How to Achieve 10G to 40G Network Migration at Zero Cost
Generally
speaking, a cabling upgrade is indispensable if we intend to migrate
network from 10G to 40G. It is no doubt that this would afford the extra
expense and time. Is there a solution to allow us to get the best of
both worlds—save both money and time? The answer is yes—Juniper’s QSFP+
LX4 transceivers provide 40 Gbps connectivity with immense cost savings
and simplicity for next-generation data center 40GbE deployments. But
what is it? And how does it work? This article would provide a
satisfying solution for you.
Overview on Juniper QSFP+ LX4
LX4
is a new 40G Ethernet optical technology, which represents a new way to
deploy 40GbE that meets all of the performance criteria of today’s data
centers. The Juniper QSFP+ 40G LX4 transceiver, a short-reach optical
transceiver that delivers 40 Gbps over duplex OM3 or OM4 MMF, allows 40
Gbps connectivity to connect directly to the 10 Gbps fiber and fiber
trunk. It has four 10 Gbps channels, each of which can transmit and
receive simultaneously on four wavelengths over an MMF strand. The
result is an aggregated duplex 40 Gbps link over a duplex of two MMF
strands. Using duplex LC connectors, QSFP+ LX4 connections can reach 100
m on OM3 MMF or 150 meters on OM4 MMF. Products that support 40GbE
interfaces such as QFX3000 QFabric Systems and QFX5100 switches support
the QSFP+ LX4 transceiver.
How to Achieve 40G Upgrading With Juniper QSFP+ LX4?
Different
from traditional network updating, migrating from 10G to 40G with
40Gbps LX4 transceiver is straightforward: users simply replace existing
10GbE optical modules with 40GbE LX optical modules. There is no need
for expensive 40GbE migration cassettes and no need to deploy an
additional fiber infrastructure. Connections using unstructured cabling
are connected directly with fiber cables: this direct-attachment design
is typically used to connect devices over short distances in a data
center network, such as switches installed in the same or adjacent
racks. Juniper’s QSFP+ LX4 uses LC connectors. Existing 10G connections
are commonly MMF cables with LC connectors. Juniper QSFP+ LX4 allows the
same cables to be used for direct 10G connections to direct 40G
connections, resulting in zero-cost cabling migration.
Greater Savings for 40G Migration
No
additional spending on cabling will be required if Juniper QSFP+ LX4
transceivers are used for all 40Gbps links. As a result, users realize
100 percent investment protection of their existing infrastructure and
incur no additional cabling costs—a significant advantage when compared
to the cost of new patch cables, new patch panels, and expansion of the
current fiber trunk. If the cabling for this network is an expansion to
the existing cabling system, the 40Gbps connections can be built using
MMF cables and QSFP 40G SR4 transceivers or QSFP 40G LX4
transceivers.Juniper QSFP+ LX4 technology removes the cost barriers for
migrating from and expanding the existing 10G cabling footprint to a 40G
infrastructure to enable a higher data rate in the network.
Conclusion
The
Juniper QSFP+ LX4 transceiver allows organizations to migrate their
existing 10Gbps infrastructure to 40Gbps at zero cost of fiber, which
provides a cost-effective solution for migrating to next-generation
40Gbps data center deployments.
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