GarrettCom P80C - Manual (Page 25)

Magnum P80F & P80C Personal Switches Installation and User Guide (07/03)
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4.5 LED’s
PWR: Illuminates GREEN, steady on when power applied.
ERROR: Indicates the self-test at power up was not successful
SPEED:
Per port, ON = 100Mbps; OFF = 10 Mbps (when LINK is made)
LINK/ACT: Per port, steady ON for LINK with no traffic, blinking indicates port
is transmitting and receiving.
F/H: ON = Full-Duplex and Link, OFF = Half-Duplex and / or no Link.
4.6 Up-link Port # 1 or 1SW
Magnum P80F and P80Cs have one manual crossover (MDIX up-link) switch,
port 1SW, on the front of the Personal Switch. This port can operate either Full/Half duplex
mode.
The up-link (or cross-over) on the # 1 or 1SW port allows its RJ-45 cable to connect
for cascading to another hub or switch port. This allows repeater-to-repeater connections
without a special cross-over cable. Port 1 works the same as regular ports for 10 Mbps or
100Mbps speed auto-sensing connections.
Cascaded connections may be operated at either 10 or 100Mbps speed. The P80F
even supports cascaded connections of both 10 Mbps and 100Mbps at the same time on
different ports. When attaching a 10 Mbps hub or switch, the Ethernet configuration rules
(hop count limits, etc.) for 10 Mbps domains are in effect. When the cascaded connection is
operated at 100Mbps speed, because of its full duplex and switched port capability, does not
need any PDV calculation for distances. Two P80F and P80Cs cascaded using RJ-45 ports
will auto-negotiate to operate the connection at 100Mb/s.
4.7 Use with Media Converters
Where an additional fiber connection (beyond the built-in fiber port as on P80F)
may be desired, a media converter may be used. For P80F, the first two switched ports can
be set to FDX manually, making typical 100Mb media converters (which can be
troublesome with auto-negotiating ports, defaulting to 100Mb half-duplex) usable in either
HDX or FDX mode as set by the user.
Whereas for P80C the switched port 2 at “F” position supports 100Mbps Full
duplex fixed only which is useful for the fast ethernet media converter (e.g. Magnum 15E).