Magnum P62-Series Hardened Switches Installation and User Guide (05/05)
33
www GarrettCom com
.
.
4.3 LED’s for P62-Series Hardened Switch
POWER:
Illuminates GREEN, steady on when power applied.
SELF TEST:
Indicates the self-test at power up was not successful.
F/H:
ON = Full-Duplex and Link, OFF = Half-Duplex and / or no Link.
LK/ACT:
Per port, steady ON for LINK with no traffic, blinking indicates port is
transmitting and receiving.
10/100:
Per port, ON = 100Mbps; OFF = 10 Mbps (when LINK is made).
4.4
Auto-Cross (MDIX) Auto-negotiation and Speed-sensing (on mp62 model only)
The RJ-45 ports on managed mp62 support auto-cross (MDI or MDIX) in the auto-
negotiation mode according to the IEEE 802.3u standard. No crossover cables are needed
when connecting the 10/100 copper port of mp62’s to other unmanaged switches, legacy
hubs, managed switches, media-converters etc. Please note that there can be conditions with
managed switches where the switch manager fixes the port settings via software, and the
result of the auto-negotiation is changed in the managed switch by the manager commands. In
such cases, the 10/100 speed or the F/H mode may be affected, but auto-cross in themp62
Switches will still work. The auto-cross function can be disabled through software.
When an RJ-45 cable connection is made, and each time LINK is enabled, auto-
negotiation takes place (except for legacy products, which do not have auto-negotiation and
which go to the default state accordingly). The Magnum Switch advertises its capability for
10 or 100 Mbps speed and F/H duplex mode, and the device at the other end of the cable
should similarly advertise / respond. Both sides will agree to the speed and mode to be used
per the IEEE 802.3u standard. Depending upon the devices connected, this will result in
agreement to operate at either 10 Mbps or 100Mbps speed, and full- or half-duplex mode.
