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Arista

Arista QSFP-100G-ER-Arista | 100G QSFP28 Transceiver, Single-Mode, 40km, Duplex LC

QSFP-100G-ER-Arista

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Description

This is a 100GBASE-ER4 QSFP28 optical transceiver from Arista's 100G optics range. It carries 100GbE over duplex single-mode fibre with an LC connector, for extended-reach links of up to 40km.

It uses the QSFP28 form factor with four 25G LAN-WDM lanes in the 1310nm band, and connects with a duplex LC interface. The 40km reach suits links that run well beyond the 10km range of standard LR4 optics. As a hot-swappable module, it can be fitted or replaced without powering down the host switch.

It is intended for metro and data-centre interconnect, campus and service-provider links that need 100GbE over single-mode fibre beyond 10km. It is supported on Arista switches with QSFP100 ports, so check the Arista transceiver compatibility matrix for your switch model and EOS release. Reaching 40km on ER4-class optics may require host RS-FEC.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Hot-swappable to maximise uptime and simplify serviceability
- Extended-reach 100G for metro and data-centre interconnect links
- Four 25G LAN-WDM lanes in the 1310nm band
- Duplex LC connector for standard single-mode fibre patching
- Supported on Arista QSFP 100G ports
- Runs 100GbE links out to 40km over single-mode fibre

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Form factor: QSFP28
- Data rate: 100GbE (100GBASE-ER4)
- Reach: up to 40km over single-mode fibre
- Connector: Duplex LC
- Wavelength: 1310nm band, 4 x 25G LAN-WDM lanes
- Hot-swappable: Yes

FAQs

Q: Which Arista switches does this transceiver work with?
A: It is supported on Arista switches with QSFP100 ports. Check the Arista transceiver compatibility matrix for your specific switch model and EOS release.

Q: What fibre type and connector does it use?
A: It uses duplex single-mode fibre with LC connectors.

Q: Do I need RS-FEC to reach 40km?
A: Reaching 40km on ER4-class optics may require host RS-FEC to be enabled on the switch port. Confirm this against your switch platform and software release.

Q: Can it be used on short fibre links?
A: On short links, Arista's optics datasheet notes that a minimum of 12dB attenuation may be needed to prevent receiver damage. Fit an inline attenuator if your link loss is low.

Q: How does it differ from a 100G LR4 transceiver?
A: Both carry 100GbE over duplex single-mode fibre with LC connectors. This ER4 module reaches up to 40km, while LR4 optics are specified for 10km.

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