Mdi/Mdi-X Switch; Configuration Switches - Allied Telesis at-fs201 Installation Manual

Description

MDI/MDI-X Switch

The MDI/MDI-X (Media Dependent Interface/Media Dependent Interface with
Crossover) switch, located on the front panel, is a straight-through or
crossover cable selection switch. It enables the RJ45 port to be connected to a
repeater or DTE device without using a special crossover cable. The default
setting of the switch is MDI-X, which means you can connect the RJ45 port to
a workstation or to any other DTE device that uses a straight-through cable.
For the MDI configuration, slide the switch to the MDI position and connect
the RJ45 port to a repeater, hub, or switch using a straight-through cable. See
Figure 5.
AUTO NEG
TX
RX
COL

Configuration Switches

The configuration (DIP) switches are located on the rear panel of the
AT-FS200s. These switches control the operating modes of the ports and the
maximum packet size. See Figure 6 and Figure 7.
The 100Base-FX port must be set to either full- or half- duplex mode
(AT-FS201 or AT-FS202).
Each 10/100Base-TX port can be set independently to either auto-negotiate
only (ON) or can be user-selectable (OFF). When set to user-configurable mode
(OFF), the user can select the speed, either 10 Mbps or 100 Mbps and the
duplex mode.
The Byte DIP switch allows the user to select upper packet-size error limit,
1518 bytes (normal network packets) or 1522 bytes which allows the
AT-FS200 family of switches to be a passive component of the networks using
IEEE 802.1Q VLAN tagging. For detailed information on how to set the
configuration switches, see Table 2 and Table 3 and Figure 8 and Figure 9 in
Chapter 2, Installation.
6
10Base-T/
10Base-T/
100Base-TX 100Base-TX
LNK
MDI MDI-X MDI MDI-X
100
FD
PORT 1 PORT 2
FS203 FAST ETHERNET SWITCH
IEEE 802.3 /802.3U
10Base T/
100Base-TX
MDI
PORT 1
Figure 5 MDI/MDI-X Switch
AUTO NEG
PWR
TX LNK
RX 100
COL FD
10Base-T/
100Base-TX
MDI-X MDI
PORT 2
MDI-X