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Cisco QSFP-100G-LR-S= QSFP28 Transceiver 100GBASE-LR1 Single Lambda 1310 nm Duplex LC Single-Mode up to 10 km

Brand:
Cisco
Cisco QSFP transceiver module 100 Gigabit QSFP100G-LR-S=
Cisco QSFP-100G-LR-S= QSFP28 Transceiver 100GBASE-LR1 Single Lambda 1310 nm Duplex LC Single-Mode up to 10 km
€1995.48 inc. VAT
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QSFP-100G-LR-S=
€1,676.87
€1,995.48 inc. VAT
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Product Code
677VB97
EAN Code
0889728245012
Manufacturer
Cisco

Quick Specs

Standard
100GBASE-LR1 · 100 Gbps
Fibre & Reach
Single-mode · up to 10 km
Connector
Duplex LC · 1310 nm
Links To
LR1 only, not LR4
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Cisco QSFP-100G-LR-S= — 100G LR1 Single-Lambda, 10 km

100 GbpsLR1 single lambdaDuplex LCUp to 10 km

The Cisco QSFP-100G-LR-S= is a 100GBASE-LR1 QSFP28 transceiver that carries 100 Gbps on a single 1310 nm wavelength, using PAM4 with onboard FEC, up to 10 km over single-mode fibre. It is used for 100G links between buildings and sites on Cisco switches. Although the feed describes it as “100GBase-LR”, Cisco lists it as LR1 — a different standard from the familiar four-wavelength LR4. In practice, single-mode optics are the choice when a link leaves the building or runs several hundred metres: the OS2 fibre used by carriers and campus backbones carries the signal for kilometres with little loss. Before you order, confirm the fibre is single-mode at both ends and note the length and the number of patch panels on the way.

Compatibility — check before buying:
This is LR1, not LR4. It will only link to another 100GBASE-LR1 module — it will not link to a QSFP-100G-LR4-S even though both reach 10 km on single-mode fibre. If the far end already has an LR4 optic, order QSFP-100G-LR4-S= instead. Cisco colour-codes this module with a blue pull tab. Keep the dust cap on until you connect the fibre, and clean both connector ends before every mating — dirt is the most common cause of a link that will not come up. Not sure? Send us your switch model and the cable run and we check it before you order.

Best For

✓ 100G links between buildings
✓ Campus and metro backbones up to 10 km
✓ New 100G single-mode links on Cisco switches
✓ Single-lambda 100G/400G architectures
✓ Data-centre interconnects
✓ Replacing a failed LR1 module

Key Features

 
Single-lambda 100G
One PAM4 wavelength instead of four CWDM lanes. It is the 100G building block of newer 400G single-lambda optics.
 
Single-mode fibre, long reach
Built for single-mode (OS1/OS2) fibre, the type used between buildings, floors and sites. It will not run over the orange or aqua multimode fibre found in many racks — the fibre type has to match at both ends.
 
Hot-swappable
Modules plug into a live port without shutting the switch down, so a link can be added or replaced during working hours. Seat it until it clicks and use the latch to remove it.
 
Plan both ends together
A link only comes up when both ends use the same standard, speed and media. Order the far-end optic, the patch cord and any spares in one go and the link works on day one.

Technical Specifications

Identification
Brand Cisco
Model QSFP-100G-LR-S (100GBASE-LR1 QSFP Transceiver)
Part Number QSFP-100G-LR-S=
EAN / GTIN 0889728245012
Pack Size Single unit
Interface
Form Factor QSFP28
Standard 100GBASE-LR1 (single wavelength)
Data Rate 100 Gbps
Connector Duplex LC
Optics & Reach
Wavelength 1310 nm (1304.5–1317.5 nm), single lambda
Fibre Single-mode G.652
Reach Up to 10 km
Tx Power −1.4 to +4.5 dBm
Rx Power −7.7 to +4.5 dBm
Environment & Power
Operating Temperature 0 to 70 °C
Modulation PAM4 with onboard FEC
Power Consumption 4.0 W
Pull Tab Colour Blue
Compatibility
Designed For Cisco switches and routers whose port and software release are listed for this module in Cisco’s Transceiver Module Group (TMG) compatibility matrix
Link Partner Another 100GBASE-LR1 module — not an LR4
In the Box
Included 1 module
Not Included Fibre patch cords and cleaning tools
Warranty
Warranty 1-Year Warranty (Singular)
Manufacturer Term Cisco publishes a standard warranty of 5 years in the data sheet for this module; expedited replacement needs a Cisco SMARTnet contract. Singular’s direct warranty is 1 year; beyond that we assist you with the manufacturer’s warranty process for its full duration.

Frequently Asked Questions

Will it link to a QSFP-100G-LR4-S?
No. LR1 uses one wavelength with PAM4; LR4 uses four wavelengths. Both ends of the link must be the same standard.
Why is the tab blue?
Cisco colour-codes its 100G optics by pull tab so they can be told apart in a busy rack. Blue marks this LR1 module.
Are fibre patch cords included?
No. You get 1 module. The Duplex LC patch cord, a matching module for the far end of the link and a fibre cleaning tool are bought separately. Tell us the distance and the fibre type and we quote the right cord.
Will it work in a switch from another brand?
Cisco modules carry Cisco Quality ID coding, and Cisco’s installation notes say to use only Cisco transceivers in Cisco devices. Support is confirmed per host model and software release in the Cisco TMG matrix. Cisco does not publish operation in other brands’ switches, so we do not promise it — send us the model and we check it.
Singular Expert Insight
We check the far end before we sell a 100G 10 km optic: if it is an LR4, this LR1 module will not link. For new links where both ends are bought together, LR1 is the forward-looking choice. For runs within 2 km, the QSFP-100G-FR-S= uses the same single-lambda approach at lower cost. Every order is backed by Singular’s local support in Cyprus — if a link will not come up, send us the port status from the switch and we help you find out whether it is the optic, the cable or the configuration. Browse all transceivers and DAC cables or the switches they plug into.

Buyer’s Guide

Buy it if

Both ends of a 100G single-mode link up to 10 km will use LR1 optics on Cisco QSFP28 ports.

Skip it if

The far end is an LR4 module, or your fibre is multimode.

Also consider

Cisco QSFP-100G-LR4-S= for LR4 links, or QSFP-100G-FR-S= for 2 km.

Features - Cisco - QSFP-100G-LR-S=

More Details
Product Code
677VB97
EAN Code
0889728245012
Manufacturer
Cisco
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