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Magnum DS80 Dual-Speed Personal Hub
4.3
LED's
PWR :
COL :
10 M LINK/ACT : Steady ON for 10 Mbps LINK with no traffic,
100M LINK/ACT : Steady ON for 100Mbps LINK with no traffic,
4.4
Up-link Port
Magnum DS80s have one up-link port, designated 8X (for cross-over), on
the front of the hub. When port 8X is used, then regular port 8 cannot be used, and
vice-versa.
The up-link (or cross-over) on the #8X 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 8X works the same as regular
ports for 10 Mbps or 100Mbps auto-sensing connections.
Cascaded connections may be operated at either 10 or 100Mbps speed.
The DS80 even supports cascaded connections of both 10 Mbps and 100Mbps at the
same time . . . on different ports. When attaching a 10 Mbps hub, the Ethernet
configuration rules (hop count limits, etc.) for 10 Mbps domains are in effect.
When the cascaded connection is operated at 100Mbps speed, the Fast Ethernet
configuration rules (PDV limits, etc.) are in effect. Two DS80s cascaded will auto-
negotiate to operate the connection at 100Mb/s.
5.0
TROUBLESHOOTING
All Magnum Ethernet products are designed to provide reliability and
consistently high performance in all network environments. The installation of a
Magnum DS80 Dual-Speed Hub is a simple procedure (see Section 3.0,
INSTALLATION); operation is easy and is described in Section 4.0,
OPERATION.
Should problems develop during installation or operation, this section
should help to locate, identify and correct such problems. Please follow the
suggestions listed below prior to contacting your supplier. However, if you are
GARRETT
Illuminates GREEN, indicate hub is receiving power.
Collision LED, flashes ON when a collision occurs,
otherwise, in normal case it will be OFF.
Blinking indicates 10 Mbps packet activity
Blinking indicates 100Mbps packet activity
Installation and User Guide (11/98)
18
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