[EX4400-24X] Compatible 1G single mode optics

Description

This article gives details on single mode optics supported by EX4400-24X that are better equipped to support long reach applications

Symptoms

The 1GE multimode connection is up on Juniper EX4400-24X and is down at the other end

Solution

We can use single-mode optics instead that support long distance communication : https://apps.juniper.net/hct/product/?cat=Transceivers&prd=EX4400-24X
They usually end with LX/LH names (Long wavelength/Long Haul) . For example, in the above link the following single mode optics support long distance connectivity:

CTP-SFP-1GE-LX

Part Number: 740-011614

Small Form Factor Pluggable 1000Base-LX Gigabit Ethernet Optic Module, CTP1000

EX-SFP-1GE-LX40K

Part Number: 740-017726

SFP 1000Base-LX Gigabit Ethernet Optics, 1310 nm for 40 km transmission on single mode fiber

QFX-SFP-1GE-LX

Part Number: 740-011614

SFP 1000Base-LX Gigabit Ethernet Optics, 1310nm for 10km transmission on SMF

SFP-1G-LX-C

Part Number: 740-011614

SFP, 1G, SMF 10km and MMF 550m, Extended Temperature (-5 through 70 DegC), Duplex LC connector

SRX-SFP-1GE-LX

Part Number: 740-011614

Small Form Factor Pluggable 1000Base-LX Gigabit Ethernet Optic Module

SRX-SFP-1GE-LX-ET

Part Number: 740-011614

Small Form Factor Pluggable 1000Base-LX Gigabit Ethernet Optic Module - Extended temperature

JNP-QSFP-40G-LX4

Part Number: 740-056705

QSFP+ 40GBASE-LX4 40 Gigabit Optics for up to 150m transmission with OM4 over duplex MMF

QSFPP-40G-LX4

Part Number: 740-062254

QSFP+ 40GBase-LX4 40 Gigabit Optics, 100m(150m) with OM3(OM4) duplex MMF fiber

EX-SFP-1GE-LH

Part Number: 740-011612

Small Form Factor Pluggable 1000Base-LH Gigabit Ethernet Optics
Note: This pluggable transceiver is intended for long reach applications with high Tx power, appropriate optical attenuation is required for on shorter links

SFP-1G-LH-C

Part Number: 740-011612

SFP, 1G, SMF 70km, Industrial Temperature (-40 through 85 DegC), Duplex LC connector
Note: This pluggable transceiver is intended for long reach applications with high Tx power, appropriate optical attenuation is required for on shorter links

SRX-SFP-1GE-LH

Part Number: 740-011612

Small Form Factor Pluggable 1000Base-LH Gigabit Ethernet Optic Module
Note: This pluggable transceiver is intended for long reach applications with high Tx power, appropriate optical attenuation is required for on shorter links

Modification History

2025-09-26 : Article Created