Differences

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--- rb:sfp [25/05/2026 18:55] – [SFP commands - IOS] andrew
+++ rb:sfp [09/06/2026 09:16] (current) – [Multimode Fibre] andrew
@@ Line 67: / Line 67: @@
 {{:rb:sfp_152240.jpg?200 |}}
-My guess is that the Single mode SFP are very similar to the Multi Mode, although the lasers may be more powerful, possibly bigger or have a heatsink?
+My guess is that the Single mode SFP are very similar to the Multi Mode, although the lasers may be more powerful due to the extended range for Single Mode, possibly bigger or have a heatsink?
+----
 ===== SFP commands - IOS =====
@@ Line 110: / Line 113: @@
 Gi1/0/25     36.0       3.38      -5.0     -40.0
 Gi1/0/26     32.5       3.33      -5.1     -40.0
 </code>
+| Tx Power (dBm) | Transmit optical power | –9 to –3 dBm | Too low = failing laser or dirty connector |
+| Rx Power (dBm) | Receive optical power  | –20 to –3 dBm | Too low = excessive fiber loss / bad patch |