Optical Datasheet: https://www.juniper.net/us/en/local/pdf/datasheets/1000329-en.pdf
SPF : 1G
SPF+ : 10G
QSFP : 40G
QSPF28 : 100G
QSFP56 : 400G
| SPF : 1G | ( SKU: 740-013111 1000 Base-T RJ45 SFP Module) | |
| SFP+ : 10G | ||
| SPF28: 25G ( 10G ) | They share a similar form factor as SFP/SFP+ While SFP28 is backward compatible with SFP+ and SFP, the reverse isn't true; an SFP+ port cannot use an SFP28 transceiver. | |
| QSFP : 40G | Quad ( 4 Channel of 10G ) | |
| QSFP+ : 40G | Quad ( 4 Channel of 10G ) QSFP+ is often backward compatible with QSFP QSFP+ providing improved performance than QSFP 4x10G or 1x40G connection | |
| QSPF28 : 100G | Quad ( 4 channel of 28G ) “28” means each lane carries up to 28G data rate. QSFP28 can do: 4x25G breakout connection, 2x50G breakout, or 1x100G |
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| QSFP56-DD : 400G | MPO connector QSFP56-DD ( 4x 56G channels + double density = 4x 112G ??? ) |
Optics / Transceiver compatibility
https://apps.juniper.net/hct/category/#catKey=100001&modelType=All&pf=QFX+Series
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SRX1500, 10km: SRX-SFP-10GE-SRSR https://apps.juniper.net/hct/product/#prd=SRX1500