CAUTION: To maintain agency approvals, you must use only a properly constructed,
shielded cable.
NOTE: The terms mulber push-on (MPO) and mulber terminaon push-on (MTP) describe
the same connector type. The rest of this topic uses MPO to mean MPO or MTP.
12-Fiber MPO Connectors
The 12-ber MPO connectors on Juniper Networks devices use two types of cables—patch cables with
MPO connectors on both ends, and breakout cables with an MPO connector on one end and four LC
duplex connectors on the other end. Depending on the applicaon, the cables might use single-mode
ber (SMF) or mulmode ber (MMF). Juniper Networks sells cables that meet the supported
transceiver requirements, but you are not required to purchase cables from Juniper Networks.
Ensure that you order cables with the correct polarity. Vendors refer to these crossover cables as
key up
to key up
,
latch up to latch up
,
Type B
, or
Method B
. If you are using patch panels between two
transceivers, ensure that the proper polarity is maintained through the cable plant.
Also, ensure that the ber end in the connector is nished correctly. Physical contact (PC) refers to ber
that has been polished at. Angled physical contact (APC) refers to ber that has been polished at an
angle. Ultra physical contact (UPC) refers to ber that has been polished at to a ner nish. You can
determine the required ber end with the connector type in the Hardware Compability Tool.
12-Fiber Ribbon Patch Cables with MPO Connectors
You can use 12-ber ribbon patch cables with socket MPO connectors to connect two transceivers of
the same type—for example, 40GBASE-SR4-to-40GBASESR4 or 100GBASE-SR4-to-100GBASE-SR4.
You can also connect 4x10GBASE-LR or 4x10GBASE-SR transceivers by using patch cables—for
example, 4x10GBASE-LR-to-4x10GBASE-LR or 4x10GBASE-SR-to-4x10GBASE-SR—instead of
breaking the signal out into four separate signals.
Table 24 on page 57 describes the signals on each ber. Table 25 on page 57 shows the pin-to-pin
connecons for proper polarity.
56
To Next Page
Loading...
