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PA-POS-2OC3 Two-Port Packet-over-SONET Port Adapter Installation and Configuration
OL-3028-06
Chapter 3 Removing and Installing Port Adapters
Replacing the SFP Optics Module
Step 3
Verify that the SFP is functioning, check that the RCV LED is green.
Note
The green (RCV) LED is turned on only if the cable is connected and the link is up. The orange
(ALARM) LED is turned on by the software if there are SONET alarms on the interface.
Step 4
Verify that the cabling is correct—single-mode to single-mode or multimode to multimode.
Note
If the wavelengths of the SFP are matched but different modes are used (multimode to single-mode or
vise versa), the SFP functions but not reliably.