Arista CAB-S-S-25G-0.5M-Arista | 25G SFP28 Passive Twinax Cable, 0.5 Meter

Q: Is this cable compatible with 10G equipment?
A: Yes, the CAB-S-S-25G-0.5M supports both 25G and 10G Ethernet applications and can operate at 10G speeds when connected to 10G SFP+ ports, providing backward compatibility.

Q: What is the difference between passive and active direct attach cables?
A: Passive DAC cables like this one use no active components and consume minimal power (0.5W max), making them ideal for short distances up to 5 meters. They are more cost-effective and generate less heat than active cables or optical transceivers.

Q: Can I use this cable to connect Arista switches to other vendors' equipment?
A: Yes, this cable is designed to be interoperable with other vendors' equipment that supports 25G SFP28 or 10G SFP+ standards. The cable's EEPROM can be coded for compatibility with specific platforms.

Q: What is the maximum reach for this cable type?
A: This specific cable is 0.5 meters long. The CAB-S-S-25G series is available in various lengths including 1m, 2m, 3m, and 5m for different rack and inter-rack connectivity requirements.

Q: Does this cable require Forward Error Correction (FEC)?
A: The CAB-S-S-25G series is classified as CA-S type under IEEE 802.3by, which has specific FEC requirements. FEC configuration depends on the host platform and distance, but is typically supported for optimal performance at 25G speeds.