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Chapter 1: Overview
AT-XEM2-12XS Line Card
26
The AT-XEM2-12XS Card has twelve transceiver slots that support the
following types of 1Gbps SFP or 10Gbps SFP+ transceivers:
1Gbps SX or LX SFP transceivers
10Gbps SR or LR fiber optic transceivers
10Gbps AT-SP10TW direct connect twinax cables with SFP+
transceiver-style connectors
Guidelines about the SFP+ transceiver slots are listed here:
The card does not support 100Mbps transceivers.
The card supports full-duplex mode only.
You can set the port speeds with Auto-Negotiation or manually.
The default is Auto-Negotiation.
SFP or SFP+ transceivers must be purchased separately. For a list of
supported transceivers, refer to the AT-SBx908 GEN2 Series data sheet
on the Allied Telesis web site.
The slots have link and activity LEDs. The states of the LEDs are
described in Table 3.
Table 3. Link and Activity LEDs on the AT-XEM2-12XS Line Card
State
Solid Green
Flashing Green
Solid Amber
Flashing Amber
Off
Description
The transceiver in the slot has established
a 10GBase link to a network device.
The transceiver is transmitting or receiving
data at 10GBase.
The transceiver has established a 1GBase
link to a network device.
The transceiver is transmitting or receiving
data at 1GBase.
Possible causes of this state are listed
here:
- The transceiver has not established a
link with another network device.
- The LEDs are turned off. To turn on the
LEDs, use the eco-friendly button.
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