Allied Telesis AT-GS950/16 User Manual

Page of 44
AT-GS950/16 and AT-GS950/24 Gigabit Ethernet Smart Switches Installation Guide
37
Cabling the Switch
Observe the following guidelines when connecting twisted pair and fiber 
optic cables to the ports on the switch:
ˆ
The connector on the cable should fit snugly into the port on the 
switch. The tab on the connector should lock the connector into place.
ˆ
Because the twisted pair ports have auto-MDI/MDI-X, you can use 
straight-through twisted pair cable to connect any type of network 
device to the switch.
ˆ
If your network topology contains a loop where two or more network 
devices can communicate with each other over more than one network 
path, do not connect the network cables forming the loop until after you 
have activated the Rapid Spanning Tree Protocol on the switch. Data 
loops can adversely affect network performance.
ˆ
If you are creating a port trunk, configure the switch’s management 
software before connecting the cables of the trunk to the switch. 
Otherwise, a network loop will result which can adversely affect 
network performance.
ˆ
In order for a switch port to successfully Auto-Negotiate its duplex 
mode with an end node, the end node should also be using Auto-
Negotiation. Otherwise, a duplex mode mismatch can occur. A switch 
port using Auto-Negotiation defaults to half-duplex if it detects that the 
end node is not using Auto-Negotiation. This can result in a mismatch 
if the end node is operating at a fixed duplex mode of full-duplex.
To avoid this problem, disable Auto-Negotiation on a switch port and 
set the port’s speed and duplex mode manually if the end node has a 
fixed duplex mode of full-duplex.