Allied Telesis AT-RH509BE Руководство по быстрой установке - Страница 5
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Table 2 AT-RH500 Series Hubs LEDs
LED
Color
State
LINK/RCV
Green
ON
(Ports)
Flashing
OFF
BNC (Ports) Green
ON
Flashing
OFF
COL (Hub)
Yellow
Flashing
PWR (Hub)
Green
ON
OFF
Applications
The BNC interface provides for the following hub configurations:
•
In a bus topology for connecting up to 30 hubs
•
In a stacked configuration for network expansion
•
As a backbone connection to legacy LANs
NOTE: When attaching the hub to a router or other device, verify the
port type used on these devices prior to attaching any cables.
Stacking Hubs Using the BNC Port
1.
Connect a BNC-T connector to the BNC port on the hub.
2.
If the hub is at the terminal end of a trunk segment, connect a BNC
terminator to the open end of the T connector.
3.
Connect coaxial cable to an open end on the T connector attached to
the BNC port on the hub.
4.
Connect the other end of the coaxial cable to the BNC port on the
next device in the segment.
Figure 2 BNC Connection for Stacking Hubs
NOTE: The minimum distance between BNC connections on the
segment is 0.5 m (1.64 ft). Maximum cable segment is 185 m (607 ft)
with a maximum of 30 nodes.
Description
ON indicates that the link test pulse is
receiving properly.
Flashing indicates that a packet is being
received on the specified port.
OFF indicates that a connection defect is
occurring such as UTP cable.
ON indicates that power is being supplied to
the BNC drivers (Port 5 and Port 9).
Flashing indicates that a packet is received on
Port 5 or port 9.
OFF indicates that no power is being supplied
to the BNC connector.
Flashing indicates that a collision is occurring
on the network.
ON indicates that the unit is receiving power.
OFF indicates that the unit is not receiving
power.
B N C
8X
7X
6X
5X
4X
3X
B N C
8X
7X
6X
5X
4X
3X
B N C
8X
7X
6X
5X
4X
3X
2X
1X
5V 1. 2A
2X
1X
5V 1. 2A
2X
1X
5V 1. 2A
5