Chapter 1: Overview
26
Collapsed
Backbone
In the topology illustrated in Figure 6, an AT-GS900/8E connects Fast
Ethernet switches that have Gigabit Ethernet uplinks. This type of topology
is often referred to as a collapsed backbone topology. The switch
functions as the focal point of the network and transfers an Ethernet frame
between the Fast Ethernet switches only when the destination end node
for the frame is on a different switch than the end node that originated the
frame. This reduces the amount of unnecessary data traffic in each
workgroup, freeing up bandwidth and improving network performance.
Figure 6. Collapsed Backbone - Hub Topology
5
4
3
2
1
6
7
8
5
4
3
2
1
6
7
8
5
4
3
2
1
6
7
8
M
0
0
1
T
C
A
/
K
N
I
L
X
D
F
R
E
W
O
P
2
E
8
/
0
0
9
S
G
-
T
A
h
c
t
i
w
S
t
e
n
r
e
h
t
E
t
i
b
a
g
i
G
T
-
E
S
A
B
0
0
0
1
/
0
0
1
/
0
1
M
0
1
M
0
0
0
1
1
3
4
5
8
7
6
2
1
3
4
5
6
7
8
Legend
10 Mbps
100 Mbps
1000 Mbps
Fast Ethernet
Switches with
Gigabit Uplinks
564
AT-GS900/8E Switch
Содержание AT-GS900/8
Страница 1: ...613 000140 Rev A Gigabit Ethernet Switches AT GS900 8 AT GS900 8E Installation Guide...
Страница 6: ...Contents 6...
Страница 8: ...Figures 8...
Страница 10: ...Tables 10...
Страница 50: ...Appendix A Technical Specifications 50...
Страница 72: ...Appendix B Translated Safety Statements 72 1 1 2 3 LAN 4 5 6 I 7 8 9 40 C 10 11 15 LAN OFF 12...
Страница 75: ...AT GA900 8 and AT GA900 8E Gigabit Ethernet Switches Installation Guide 75 41 42 TEL PSTN 43 26 AWG...
Страница 76: ...Appendix B Translated Safety Statements 76...
