SFP required to connect 20 KM long fibre on N5K

[gaurav.2.yadav@bt.com]

there is one SM Fibre of 20 Km distance and which I want to connect on N5K-C5548UP model of switch , can any suggest which model of SFP should I use to connect this Single mode Fibre to my N5K switch . IOS of N5K switch is version 6.0(2)N2(1).

[Rick1776]

Here are the 10G SFP that are compatible with your switch.

SFP-10G-LR
SFP-10G-LR-S

Minimum NX-OS 5.0(3)N1(1B)

Unfortunately the max distance is 10KM.

Links for you to review.
https://www.cisco.com/c/en/us/td/docs/interfaces_modules/transceiver_modules/compatibility/matrix/10GE_Tx_Matrix.html#_Toc505771689

https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/data_sheet_c78-455693.html

This 3rd party SFP says it can go 20KM but it's not a Cisco SFP. Not sure it's true.
https://www.flexoptix.net/en/sfp-plus-lr-transceiver-10-gigabit-stm64-sm-1310nm-20km-11db-ddm-dom.html?co8061=48648

I would call Cisco TAC to see what they suggest.

Are you running Dark Fiber between the switches. Also I'm assuming your refering to 10G not 1G

[sbhadrav@cisco.com]

Cisco Nexus 5500 platform supports 10 Gigabit Ethernet SFP+ copper Twinax cables for short distances and SFP+ optics (10GBASE-SR,
10GBASE-LR, 10GBASE-ER, GLC-ZX-SM and Cisco Nexus 2000 Series Fabric Extender Transceiver [FET-10G]) for longer distances. SFP+ has
several advantages compared to other 10 Gigabit Ethernet connectivity options:
● Small 10 Gigabit Ethernet form factor
● Optical interoperability with XENPAK, X2, and XFP interface types
● Low power consumption
● Hot-swappable device
● Cisco Nexus 5500 platform products support 8-Gbps Fibre Channel-compatible SFP+ for native Fibre Channel connectivity options; 8-Gbps
Fibre Channel-compatible short-reach and 10-km long-reach SFP transceiver modules operate at 8/4/2 Gbps and are supported in the
8-Gbps-capable native Fibre Channel ports on expansion modules and unified ports
please check below link for more info:-
https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/data_sheet_c78-455693.html