Installing The Patch Cord; Twisted-Pair Cable/Connector Pin-Outs - HP Aruba 3810M Series Installation And Getting Started Manual

NOTE: Most of the time, if you are using good quality graded-index multimode fiber cable that
adheres to the standards listed in
conditioning patch cords in your network. This is especially true if the fiber runs in your network
are relatively short.
For 10-Gigabit LRM using OM3 cable (50 μm multimode @ 1500/500 MHz*km), a mode
conditioning patch cord is not required. Other multimode cables may require mode conditioning
patch cords to achieve the LRM maximum distances.

Installing the Patch Cord

As shown in the illustration below, connect the patch cord to the Hewlett Packard Enterprise
transceiver with the section of single mode fiber plugged in to the Tx (transmit) port. Then, connect
the other end of the patch cord to your network cabling patch panel, or directly to the network
multimode fiber.
If you connect the patch cord directly to the network cabling, you may need to install a
female-to-female adapter to allow the cables to be connected together.
Figure 41 Connecting a Mode Conditioning Patch Cord for Gigabit-LX
Make sure you purchase a patch cord that has appropriate connectors on each end, and has
multimode fibers that match the characteristics of the multimode fiber in your network. Most
important, the core diameter of the multimode patch cord must match the core diameter of the
multimode cable infrastructure (either 50 or 62.5 microns).

Twisted-Pair Cable/Connector Pin-Outs

Auto-MDIX Feature:
The 10/100/1000-T ports support the IEEE 802.3ab standard, which includes the "Auto MDI/MDI-X"
feature. In the default configuration, "Auto", the ports on the Switch 3810M all automatically detect
the type of port on the connected device and operate as either an MDI or MDI-X port, whichever
is appropriate. So for any connection, a straight-through twisted-pair cable can be used -- you
no longer have to use crossover cables, although crossover cables can also be used for any of
the connections.
If you connect a 3810M switch twisted-pair port to another switch or hub, which typically have
MDI-X ports, the 3810M port automatically operates as an MDI port. If you connect it to an end
node, such as a server or PC, which typically have MDI ports, the 3810M switch port operates
as an MDI-X port. In all cases, you can use standard straight-through cables or crossover cables.
Cabling Specifications, there should not be a need to use mode
Installing the Patch Cord 89