EX-SFP-1GE-SX-BCC | Juniper Compatible 1GB Multi-Mode 550m (1000BASE-SX)

Q: Will this work in place of the Juniper EX-SFP-1GE-SX?
A: Yes. The EX-SFP-1GE-SX-BCC is fully compatible with the Juniper EX-SFP-1GE-SX. It complies with IEEE 802.3z 1000BASE-SX, uses the same SFP form factor, operates at 1.25 Gbps over 850nm multi-mode fibre, and is plug-and-play in any Juniper SFP port designed for 1GbE multi-mode optics.

Q: Which Juniper platforms support this transceiver?
A: This transceiver works in any Juniper switch, router, or security appliance with a Gigabit Ethernet SFP slot that accepts 1000BASE-SX optics. This includes EX series switches, SRX security gateways, and MX routers. If your platform has an SFP port rated for 1GbE and supports multi-mode fibre, this module will function correctly.

Q: What fibre types and reach distances are supported?
A: This transceiver supports 50/125µm multi-mode fibre (OM2 or OM3) for links up to 550 metres and 62.5/125µm multi-mode fibre (OM1) for links up to 275 metres. Actual reach depends on fibre quality, patch cord insertion loss, and link budget. The transceiver provides -9.5 to -3 dBm transmit power and can receive signals down to -18 dBm, delivering approximately 8 dB link budget.

Q: How do I access the DOM diagnostic data?
A: The transceiver implements the SFF-8472 digital diagnostic monitoring standard. Diagnostic parameters including transmit power, receive power, temperature, supply voltage, and laser bias current are accessible via the I2C interface at address A2h. Most Juniper NOS versions expose these values through CLI commands or SNMP MIBs for real-time link health monitoring without external test equipment.

Q: Can I mix this transceiver with other 1GbE optics in the same chassis?
A: Yes. Because this transceiver conforms to IEEE 802.3z 1000BASE-SX and the SFP MSA specification, it operates independently on each port. You can deploy it alongside 1000BASE-LX, 1000BASE-T, or any other standards-compliant 1GbE SFP in the same switch without configuration changes or interoperability issues. Each port negotiates link parameters based on the installed optic and connected fibre type.