Allied Telesis AT-MC13 - Manual (Page 22)

Chapter 1: Overview
22
Back-to-Back Topology
In some network configurations you may want to interconnect two media
converters in what is referred to as a back-to-back topology. In this
topology, the media converters not only extend the distance of your
network but also convert the fiber optic cable from twisted pair to fiber
optic and back again. Figure 8 illustrates two 10/100Base-TX switches at
different campuses interconnected by two AT-MC13 media converters.
The 10Base-T ports on the media converters are connected to one 10/
100Base-TX port on each switch, while the 10Base-FL ports on the media
converters are directly connected together.
Figure 8. Back-to-Back Topology
AT-MC13 ETHERNET MEDIA CONVERTER
NORMAL
LNK TST
10Base-FL 10Base-T TX RX
MDI MDI-X
PWR
NORMAL
REC
LINK
REC
LINK
CLASS 1 LED PRODUCT
AT-MC13 ETHERNET MEDIA CONVERTER
NORMAL
LNK TST
10Base-FL 10Base-T TX RX
MDI MDI-X
PWR
NORMAL
REC
LINK
REC
LINK
CLASS 1 LED PRODUCT
STATUS
RESET
FAULT
RPS PWR
10BASE-T / 100BASE-TX
FAST ETHERNET SWITCH
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
10BASE-T / 100BASE-TX
1X 3X 5X 7X
2X 4X 6X 8X
9X 11X 13X 15X
10X 12X 14X 16X
17X 19X 21X 23X
18X 20X 22X 24X
A
B
RS-232 TERMINAL PORT 100M LINK / ACTIVITY 10M LINK / ACTIVITY
HALF DUP/ COL FULL DUP
PORT ACTIVITY
L/A
L/A
D/C
D/C L/A D/C
STATUS
RESET
FAULT
RPS PWR
10BASE-T / 100BASE-TX
FAST ETHERNET SWITCH
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
10BASE-T / 100BASE-TX
1X 3X 5X 7X
2X 4X 6X 8X
9X 11X 13X 15X
10X 12X 14X 16X
17X 19X 21X 23X
18X 20X 22X 24X
A
B
RS-232 TERMINAL PORT 100M LINK / ACTIVITY 10M LINK / ACTIVITY
HALF DUP/ COL FULL DUP
PORT ACTIVITY
L/A
L/A
D/C
D/C L/A D/C
1202
AT-MC13 AT-MC13
Fiber Optic
Twisted Pair
100 m (328 ft) at 10 Mbps
100 m (328 ft) at
10 Mbps
2 km (1.2 mi) at 10 Mbps
10/100Base-TX Switch
10/100Base-TX Switch