10/100M Brj45 (Slot C); Ml810 (E4) X Multimode Lc (Slot C); Ultimode Lc (S Lot C) - GE Multilink ML810 Instruction Manual

ML810 SWITCH PORT MODULES
4.5.2 ML8104 (C1), 4 x 10/100Mb RJ45 (Slot C)
Note
NOTE
4.5.3

ML810 (E4) x Multimode LC (Slot C)

4–8
The ML810-RJ45 4-port Copper module provides four 10/100Mb switched RJ-45 ports. The
10/100Mb switched ports normally (as a default setting) are independently N-way auto-
negotiating and auto-crossover (MDIX) for operation at 10 or 100Mb speed in full- or half-
duplex mode. (i.e., each independently selects a mode and speed to match the device at
the other end of the twisted pair cable). (For auto-negotiation and MDIX details, see
Section 4.2 in the ML810 User Guide.)
On the model ML810-RJ45 module, there are three LEDs for each port, two integrated into
the connector, and one below the connector. The LK/ACT LED indicates LK (Link) "ready for
operation" on that port when lit. The ACT (Activity) LED indicates receiving Activity on that
port when blinking. The 10/100 LED indicates operation at 100Mb speed when ON and at
10 Mb speed when OFF (when auto-negotiation is not disabled). The F/H LED is ON to
indicate full-duplex operation and OFF to indicate the half-duplex mode. A twisted pair
cable must be connected into an RJ-45 port and the Link (LK) indicator for that port must
be ON (indicating there is a powered-up device at the other end of the cable) in order for a
LK LED to provide valid indications of operating conditions on that port.
Using the MultiLink ML810 Managed Edge Switch firmware, the user may disable auto-
negotiation and fix the desired operation of each RJ-45 port. The user may select 10Mb or
100Mb speed and full- or half-duplex mode per-port as per user requirements.
For Power Substations: In support of the IEEE 1613 Class 2 standard, GCI advises that, for
substation applications, the RJ-45 ports are intended for connectivity to other
communication equipment such as routers or telecommunication multiplexers installed in
close proximity (i.e., less than 2 meters or 6.5ft) to the ML810. It is not recommended to use
these ports in substation applications to interface to field devices across distances which
could produce high (greater than 2500V ) levels of ground potential rise (GPR) during line-
to-ground fault conditions. The ML810 passes the 1613 specifications for zero packet loss
with fiber ports and with RJ-45 ports used as indicated here.
The ML810 (E4), 4-port Fiber module provides four 100Mb Multimode LC Fiber ports.
MULTILINK ML810 MANAGED EDGE SWITCH – INSTRUCTION MANUAL
CHAPTER 4: OPERATION