Installation guide

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).
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.
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
POWER
MGMT.
10/100BASE-T ETHERNET SWITCH
WITH GIGABIT ETHERNET
1234
13 14 15 16
5678
17 18 19 20
9 101112
21 22 23 24
LINK ON
ACTIVITY
DISABLED
123456
7 8 9 10 11 12
13 14 15 16 17 18
19 20 21 22 23 24
25
25
25R
25R
A
L
25 25R
1000BASE-X 10/100BASE-TX MDI-X
LINK ON
ACTIVITY
DISABLED
123456
7 8 9 10 11 12
13 14 15 16 17 18
19 20 21 22 23 24
POWER
MGMT.
10/100BASE-T ETHERNET SWITCH
WITH GIGABIT ETHERNET
49
49
49R
49R
A
L
25 26 27 28 29 30
31 32 33 34 35 36
37 38 39 49 41 42
43 44 45 46 47 48
50
50
50R
50R
A
L
1234
13 14 15 16
25 26 27 28
37 38 39 40
5678
17 18 19 20
29 30 31 32
41 42 43 44
9 101112
21 22 23 24
33 34 35 36
45 46 47 48
49 49R
50 50R
1000BASE-X
10/100BASE-TX
MDI-X