Juniper Compatible 40G QSFP+ Passive DAC Cable — 2m, JNP-40G-DAC-2M-C
Warranty: Lifetime
40G between Juniper switches — for a QFX5100 talking to a newer QFX at 40G
JNP-40G-DAC-2M-C — Juniper compatible 40G QSFP+ to QSFP+ passive DAC, 2m
→ Both ports run at 40G. A 100G QSFP28 port on the faster switch must be set to 40G to link with this cable. Our customers use it from a QFX5200-32C to a QFX5100-48S.
SKU: JNP-40G-DAC-2M-C
Description: 40G QSFP+ passive direct-attach copper cable, Juniper coding on both ends, 2 m
This QSFP+ twinax cable links two Juniper 40G ports. When one side is a 100G QSFP28 port, that port runs at 40G with this cable once it is configured for 40G.
Passive copper keeps latency and power to a minimum for in-rack and adjacent-rack links.
Which One Do I Need?
| Connecting | Part |
|---|---|
| Juniper to Juniper, 40G, 2 m | JNP-40G-DAC-2M-C — this listing |
| Juniper to Juniper, 100G, 2 m | JNP-100G-DAC-2M-C |
| 40G over fiber | 40G SR4 optics (ask for Juniper coding) |
Technical Specifications
| Specification | Value |
|---|---|
| SKU | JNP-40G-DAC-2M-C |
| Ends | QSFP+ to QSFP+ |
| Data rate | 40 Gb/s (4 x 10G) |
| Cable type | Passive twinax copper |
| Length | 2 m (6.6 ft) |
| Coding | Juniper, both ends |
| Typical use | Juniper QFX5200-32C to QFX5100-48S |
| Condition | New |
| Warranty | Lifetime, backed by Resilient Tec |
Source: Juniper Pathfinder hardware specifications for Juniper passive DACs (JNP-100G-DAC-3M, QFX-SFP-DAC-3M). Coding and end-to-end testing by Resilient Tec.
Good to Know
- Set the 100G port to 40G. QFX5200 ports default to 100G; configure the speed before you expect link.
- Not a breakout. For 40G to 4x 10G, use a breakout cable.
Quick Checklist — Is This the Right Cable?
You are linking two Juniper ports at 40G within 2 m.
Availability
New, coded and tested · Ships from Resilient Tec in Knoxville, TN · Free standard shipping on US orders.
We confirm stock and lead time with you before an order ships. Need a different length, or different coding on each end? We build dual-coded cables to order. Request a quote →
Warranty: lifetime, backed by Resilient Tec — not a manufacturer term. When something fails you reach a named seller in the US, not a ticket queue.
You Might Also Need
- JNP-100G-DAC-2M-C — 100G version of this cable
- Breakout cables — 40G to 4x 10G
Related Guides
40G between Juniper switches — for a QFX5100 talking to a newer QFX at 40G
JNP-40G-DAC-2M-C — Juniper compatible 40G QSFP+ to QSFP+ passive DAC, 2m
→ Both ports run at 40G. A 100G QSFP28 port on the faster switch must be set to 40G to link with this cable. Our customers use it from a QFX5200-32C to a QFX5100-48S.
SKU: JNP-40G-DAC-2M-C
Description: 40G QSFP+ passive direct-attach copper cable, Juniper coding on both ends, 2 m
This QSFP+ twinax cable links two Juniper 40G ports. When one side is a 100G QSFP28 port, that port runs at 40G with this cable once it is configured for 40G.
Passive copper keeps latency and power to a minimum for in-rack and adjacent-rack links.
Which One Do I Need?
| Connecting | Part |
|---|---|
| Juniper to Juniper, 40G, 2 m | JNP-40G-DAC-2M-C — this listing |
| Juniper to Juniper, 100G, 2 m | JNP-100G-DAC-2M-C |
| 40G over fiber | 40G SR4 optics (ask for Juniper coding) |
Technical Specifications
| Specification | Value |
|---|---|
| SKU | JNP-40G-DAC-2M-C |
| Ends | QSFP+ to QSFP+ |
| Data rate | 40 Gb/s (4 x 10G) |
| Cable type | Passive twinax copper |
| Length | 2 m (6.6 ft) |
| Coding | Juniper, both ends |
| Typical use | Juniper QFX5200-32C to QFX5100-48S |
| Condition | New |
| Warranty | Lifetime, backed by Resilient Tec |
Source: Juniper Pathfinder hardware specifications for Juniper passive DACs (JNP-100G-DAC-3M, QFX-SFP-DAC-3M). Coding and end-to-end testing by Resilient Tec.
Good to Know
- Set the 100G port to 40G. QFX5200 ports default to 100G; configure the speed before you expect link.
- Not a breakout. For 40G to 4x 10G, use a breakout cable.
Quick Checklist — Is This the Right Cable?
You are linking two Juniper ports at 40G within 2 m.
Availability
New, coded and tested · Ships from Resilient Tec in Knoxville, TN · Free standard shipping on US orders.
We confirm stock and lead time with you before an order ships. Need a different length, or different coding on each end? We build dual-coded cables to order. Request a quote →
Warranty: lifetime, backed by Resilient Tec — not a manufacturer term. When something fails you reach a named seller in the US, not a ticket queue.
You Might Also Need
- JNP-100G-DAC-2M-C — 100G version of this cable
- Breakout cables — 40G to 4x 10G