Q: What is bidirectional (BiDi) technology and why does it matter?
A: BiDi transceivers use two different wavelengths (850nm and 900nm) to transmit and receive on a single fibre strand simultaneously. This means you can achieve 40G connectivity over existing duplex OM3/OM4 fibre cabling without needing to install new parallel-fibre MPO infrastructure, significantly reducing upgrade costs.

Q: What fibre type and maximum distance does the QSFP-40G-SRBD support?
A: The QSFP-40G-SRBD supports up to 100 metres over duplex OM3 multimode fibre and up to 150 metres over duplex OM4 multimode fibre. It uses standard LC duplex connectors.

Q: Which Arista switches is this transceiver compatible with?
A: The QSFP-40G-SRBD is designed for use with Arista 7000-series switches and any other equipment with standards-compliant QSFP+ ports supporting 40GBASE-SR BiDi. Always verify compatibility with your specific platform's transceiver compatibility matrix.

Q: Can I use this transceiver with non-Arista equipment?
A: The QSFP-40G-SRBD conforms to the IEEE 802.3ba 40GBASE-SR BiDi standard, but BiDi compatibility requires matching BiDi transceivers at both ends of the link. Both ends must use the same BiDi standard; mixing different vendors' BiDi modules may cause link issues unless confirmed compatible.

Q: Is the QSFP-40G-SRBD available in Australia and how can I order?
A: Yes. The Arista QSFP-40G-SRBD is available from iptrading.com.au, an Australian B2B IT hardware reseller. We offer fast shipping across Australia with expert pre- and post-sales support. Contact us for volume pricing or availability enquiries.

Q: What are the main advantages of using a BiDi transceiver over a standard 40G SR4 module?
A: Standard 40G SR4 transceivers require 8-fibre MPO cables (4 fibres for Tx, 4 for Rx), whereas BiDi transceivers use a standard 2-fibre duplex LC connection. This makes BiDi ideal for environments where duplex fibre is already deployed and MPO cabling is not available or cost-effective to install.