Configurations
12
Bussing of the AT-3012T multiport repeater is another possibility. Attaching
an Ethernet coaxial transceiver to the AUI port of each AT-3012T repeater
and then bussing the transceivers on a coaxial segment will allow more nodes.
Notice that the worst case, node to node, is through only two repeaters. On
10BASE2 thin Ethernet up to 30 AT-3012T Hubs may be connected in this
way, as shown in Figure 7.
Figure 6:
Cascading Hubs
Ethernet
Transceiver
Coaxial Ethernet
AUI Cable
UTP Link Segment
10 UTP Segments
11 UTP Segments
11UTP Segments
AUI
PORT
1
10 BASE-T PORTS
LINK TEST
PORTS
POWER
4
3
2
5
8
7
6
9
12
11
10
X
X
X
X
X
X
X
X
X
X
X
X
1
3
5
9
7
11
2
4
6
10
8
12
10 UTP Segments
AUI
PORT
1
10 BASE-T PORTS
LINK TEST
PORTS
POWER
4
3
2
5
8
7
6
9
12
11
10
X
X
X
X
X
X
X
X
X
X
X
X
1
3
5
9
7
11
2
4
6
10
8
12
AUI
PORT
1
10 BASE-T PORTS
LINK TEST
PORTS
POWER
4
3
2
5
8
7
6
9
12
11
10
X
X
X
X
X
X
X
X
X
X
X
X
1
3
5
9
7
11
2
4
6
10
8
12
AUI
PORT
1
10 BASE-T PORTS
LINK TEST
PORTS
POWER
4
3
2
5
8
7
6
9
12
11
10
X
X
X
X
X
X
X
X
X
X
X
X
1
3
5
9
7
11
2
4
6
10
8
12
UTP Link Segment
UTP Link Segment
Figure 7:
Hubs on a Backbone
12 UTP Segments
12 UTP Segments
12 UTP Segments
AUI
PORT
1
10 BASE-T PORTS
LINK TEST
PORTS
POWER
4
3
2
5
8
7
6
9
12
11
10
X
X
X
X
X
X
X
X
X
X
X
X
1
3
5
9
7
11
2
4
6
10
8
12
12 UTP Segments
AUI
PORT
1
10 BASE-T PORTS
LINK TEST
PORTS
POWER
4
3
2
5
8
7
6
9
12
11
10
X
X
X
X
X
X
X
X
X
X
X
X
1
3
5
9
7
11
2
4
6
10
8
12
AUI
PORT
1
10 BASE-T PORTS
LINK TEST
PORTS
POWER
4
3
2
5
8
7
6
9
12
11
10
X
X
X
X
X
X
X
X
X
X
X
X
1
3
5
9
7
11
2
4
6
10
8
12
AUI
PORT
1
10 BASE-T PORTS
LINK TEST
PORTS
POWER
4
3
2
5
8
7
6
9
12
11
10
X
X
X
X
X
X
X
X
X
X
X
X
1
3
5
9
7
11
2
4
6
10
8
12
Micro
Transceiver
50
Ω
Terminator
Micro
Transceiver
Micro
Transceiver
BNC-T
Connector
Micro
Transceiver
