Arista DCS-7500R2-36CQ-LC | 7500R2 36-Port 100G Line Card, 3.6Tbps Wirespeed

Q: Which chassis models are compatible with the DCS-7500R2-36CQ-LC?
A: This line card is designed for Arista 7500R2 Series modular chassis including the 7504N, 7508N, 7512N, and 7516N models. It requires an active supervisor module to operate and is also interoperable with 7500E Series chassis.

Q: Can I mix different port speeds on this line card?
A: Yes, each QSFP100 port can be independently configured for 100GbE, 40GbE, or broken out into 4x25GbE or 4x10GbE. Speed changes and breakout modes are enabled independently of other ports on the line card, providing maximum deployment flexibility.

Q: What is the maximum port density achievable with this line card?
A: Each DCS-7500R2-36CQ-LC provides 36x 100GbE ports. When using all ports in 4x10GbE breakout mode, a single line card can support up to 144x 10GbE connections, enabling high-density leaf-spine and data centre fabric architectures.

Q: Does this line card support MACsec encryption?
A: No, the DCS-7500R2-36CQ-LC is the standard wirespeed version without MACsec. For hardware-based encryption requirements, consider the DCS-7500R2M-36CQ-LC variant which includes MACsec capabilities.

Q: What optics are supported on the QSFP100 ports?
A: The line card supports industry-standard QSFP28 and QSFP100 optics for both single-mode and multi-mode fibre, as well as direct-attach copper and active optical cables. This ensures compatibility with a wide range of data centre interconnect scenarios.