User Guide

Stack Installation Guide for AT-2552XS L2 Data Center Switch
21
Warning
Keep the exhaust air vents clear of any obstructions to insure proper
cooling of the switch components.
 SFP+ Slots - There are 48 SPF+ slots (ports 1 - 48) on the rear
panel. Each port supports communication speeds up to 10Gbps.
The switch supports a variety of 10G SFP+ transceivers and direct
attach cables.
The AT-DC2552XS L2 Data Center Switch only supports SFP+
transceivers in this product. Refer to “Installing SFP+ Transceivers
and Cables” on page 56 for installation instructions of the SFP+
transceivers.
Note
Each SFP+ slot has a dust cover installed at the factory which
should be left in place until a SFP+ transceiver is installed.
 SFP+ Slot LEDs - Each SFP+ slot has a corresponding LED which
displays the link and activity status of the port. Refer to Figure 3 on
page 23 for the location of these LEDs and Table 2 on page 23 for
their functional description.
 QSFP+ Slots - There are four QSFP+ slots which support
communication speeds up to 40 GB. These slots are numbered 49,
53, 57 and 61. Each slot may be configured as one 40 GB port or 4
X 10GB ports in the management software. Refer to Figure 4 on
page 24 for the location of these LEDs and Table 3 on page 24 for
their functional description. Refer to “Installing QSFP+
Transceivers and Cables” on page 61 for installation instructions.
Note
Each QSFP+ slot has a dust cover installed at the factory which
should be left in place until an QSFP+ transceiver is installed.
Note
QSFP+ transceivers must be purchased separately. For more
information about the list of supported QSFP+ transceivers, refer to
“Optional SFP+ Transceivers” on page 17.
 QSFP+ Slot LEDs - Each QSFP+ slot has a corresponding QSFP+
LED which displays the link and activity status of the QSFP + slots.
Refer to “QSFP+ Slot LEDs” on page 24 for the functional
description.
 Power/Fault LED - The Status LED displays the overall status of
the chassis, power supply modules and fan modules. Refer to