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Summary of Features
1-4
The AT-8525 provides 24 auto-negotiating 10Base-T/100Base-TX ports, one Gigabit
Ethernet port, and one redundant Gigabit Ethernet port. The AT-8525SX model has
the 1000Base-SX GBIC transceiver already installed, and the AT-8525LX model has
the 1000Base-LX GBIC transceiver already installed. You can also order GBIC
modules separately. Contact your Allied Telesyn dealer for the availability of the
GBIC modules.
Figure 1-3 shows the front view of the AT-8525 (common to both SX and LX
configurations).
1000BASE-X
ACTIVITY
LINK ON
DISABLED
1
2
3
7
8
9
A
25
25R
13
14
15
L
25
25R
19
20
21
25
25R
Figure 1-3 AT-8525 Front View
The AT-8550 features 48 auto-negotiating 10Base-T/100Base-TX ports, two Gigabit
Ethernet ports, and two redundant Gigabit Ethernet ports. The AT-8550SX model has
the 1000Base-SX GBIC transceiver already installed, and the AT-8550LX model has
the 1000Base-LX GBIC transceiver already installed. You can also order GBIC
modules separately. Contact your Allied Telesyn dealer for the availability of the
GBIC modules.
Figure 1-4 shows the front view of the AT-8550.
1
2
3
7
8
9
A
49
49R
13
14
15
L
49
49R
19
20
21
49
49R
ACTIVITY
LINK ON
1000BASE-X
DISABLED
25
26
27
31
32
33
A
50
50R
37
38
39
L
50
50R
43
44
45
50
50R
Figure 1-4 AT-8550 Front View
The 10Base-T/100Base-TX ports on the switches use standard RJ45 connectors. They
are auto-negotiating for 10/100 Mbps operation and for half- or full-duplex operation.
The Gigabit Ethernet interfaces support the GBIC connector, and ship with standard
1000Base-SX, 850nm GBIC modules.
Table 1-1 describes the standard (connectors), media, and maximum distances for
each port type.
8525front.eps
10/100BASE-TX MDI-X
1
2
3
4
5
6
7
4
5
6
10
11
12
16
17
18
22
23
24
13
14
15
16
17
18
19
1
2
3
4
5
6
7
4
5
6
10
11
12
16
17
18
22
23
24
13
14
15
16
17
18
19
25
26
27
28
29
30
31
28
29
30
34
35
36
49
41
42
46
47
48
37
38
39
40
41
42
43
10/100BASE-T ETHERNET SWITCH
WITH GIGABIT ETHERNET
8
9
10
11
12
POWER
MGMT.
20
21
22
23
24
8
9
10
11
12
10/100BASE-T ETHERNET SWITCH
WITH GIGABIT ETHERNET
20
21
22
23
24
10/100BASE-TX
32
33
34
35
36
MDI-X
POWER
MGMT.
44
45
46
47
48
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