Allied Telesis XEM-12S Installationshandbuch - Seite 7
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SFP Ports
The 12-port 1000BASE-X expansion module, model XEM-12S, features the
following:
■
two rows of 6 SFP ports
■
support for hot-swappable SFP modules
■
status LEDs
■
two 16MByte DDR-SDRAM for packet buffering
■
NEBS compliant
■
cable fault detection and distance-to-fault diagnostics for copper SFP ports
(see the Test Facility chapter in the Software Reference for the switch)
Front view XEM-12S
1
2
3
PORTS 1-12
The following LEDs report operations on XEM-12S expansion modules.
LED
State
L/A
Green
(Link Activity)
Green flashing
Amber
Amber flashing
4
5
6
7
8
SFP
LINK
ACT
INSTALLED
Description
An SFP transceiver is installed and a link has
been established.
An SFP transceiver is installed and link
activity is occurring.
An SFP transceiver is installed but a link has
not been established.
An SFP is installed but there is a transmission
fault.
Installation Guide
9
10
11
12
FAULT
7