Cisco ASR 9000 Series Installation Manual page 123

Chapter 2 Installing Line Cards in the Cisco ASR 9000 Series Router
Figure 2-44
1
Component side of line card
2
EMI gasket
3 Transmit (TX)
For information about which SFP module options are available for the 40-Port Gigabit Ethernet line card
and the Gigabit Ethernet ports of the 2-Port 10GE + 20-Port GE combination line card, see
For information about which SFP+ module options are available for the 16-Port 10GE oversubscribed
line card, see
The SFP modules have LC connectors. The only restriction is that each port must match the
specifications on the other end of the cable (short or long wavelength), and must not exceed the
recommended cable length for reliable communication.
Fiber-optic transmission specifications identify two types of fiber: single-mode (SMF) and multimode
(MMF). The maximum distance for single-mode installations is determined by the amount of light loss
in the fiber path. If your environment requires the light to travel close to the typical maximum distance,
you should use an optical time domain reflectometer (OTDR) to measure the power loss.
Use only the SFP and SFP+ modules supplied by Cisco Systems, Inc. with your Ethernet line card. Each
Caution
module contains an internal serial EEPROM that is security-programmed by the module manufacturer
with information that provides a way for the Cisco IOS XR software to identify and validate the module
as qualified to operate properly with Cisco Ethernet line cards. Unapproved SFP or SFP+ modules (those
not purchased directly from Cisco Systems, Inc.) do not work on Ethernet line cards. To verify the
version of the installed module, see
SFP Module and Fiber-Optic Cable
3 4
5
4 3 5
Table A-3.
Verifying the Transceiver Modules, page
Cisco ASR 9000 Series Aggregation Services Router Ethernet Line Card Installation Guide
2 1
4
Receive (RX)
5
Top surface of SFP module
3-6.
Cables and Connectors
Table A-2.
2-69