Differences

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--- rb:sfp [26/09/2025 10:07] – [SFP module (Small Form-factor Pluggable)] andrew
+++ rb:sfp [30/11/2025 22:34] (current) – [Multimode Fibre] andrew
@@ Line 59: / Line 59: @@
 ----
 ===== Multimode Fibre =====
+Just a look inside for interest...
 {{:rb:sfp_152322.jpg?200 |}}
@@ Line 65: / 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?
+===== SFP commands - IOS =====
+Specific to Cisco IOS as SFPs can be found in Fibre Channel SAN switches and other manufacturer's kit.
+Inserting a SFP module
+<code>
+router01#
+*Nov 30 19:44:22.751: %EHWIC_1GE_SFP_CU-6-SFP_INSERTED: Transceiver module 1000BaseSX SFP is inserted in GigabitEthernet0/0/0 interface.
+</code>
+This is in a [[networking:cisco-1921|Cisco 1921 Gigabit router]] with a WIC for gigabit copper and and SFP module.
+<code>
+router01#sh inventory
+NAME: "CISCO1921/K9", DESCR: "CISCO1921/K9 chassis, Hw Serial#: FCZ1625C5YF, Hw Revision: 1.0"
+PID: CISCO1921/K9      , VID: V04 , SN: FCZ1625C5YF
+NAME: "Enhanced High Speed WAN Interface Card-1 Port Gigabit Ethernet SFP/Cu on Slot 0 SubSlot 0", DESCR: "Enhanced High Speed WAN Interfa"
+PID: EHWIC-1GE-SFP-CU  , VID: V01, SN: FOC15164VRP
+NAME: "1000BASE-SX SFP", DESCR: "1000BASE-SX SFP"
+PID:  , VID:    , SN: FNS1007Q4PF
+</code>