Arista DCS-7500R3-36CQ-LC | 7500R3 Series 36-Port 100G Line Card Module

Q: Which chassis models are compatible with the DCS-7500R3-36CQ-LC line card?
A: This line card is compatible with the Arista 7512N, 7508N, and 7504N modular chassis systems. It requires 7500R3 Series fabric modules and supervisor modules to operate. The 7500R3 line cards are backward compatible with 7500N chassis but require the appropriate fabric and supervisor support.

Q: What speeds are supported on each 100G QSFP port?
A: Each QSFP100 port supports multiple speeds including 100G, 50G, 40G, 25G, and 10G depending on the optics or cables used. This multi-speed flexibility allows seamless migration and mixed-speed deployments within the same line card, using breakout cables for lower-speed connectivity.

Q: How does this line card differ from the 7500R3K-36CQ-LC model?
A: The DCS-7500R3K-36CQ-LC variant includes enhanced FlexRoute capabilities with support for larger routing tables (up to 5 million IP routes) and Algorithmic ACLs for advanced access control. The standard DCS-7500R3-36CQ-LC is optimized for balanced Layer 2 and Layer 3 data center applications with standard routing table sizes.

Q: What network architectures is this line card best suited for?
A: This line card excels in spine-leaf data center architectures, large-scale VXLAN overlay networks, EVPN deployments, internet peering applications, and data center interconnect scenarios. The deep buffer VOQ architecture ensures lossless forwarding and predictable latency for mixed traffic patterns including storage, multicast, and real-time applications.

Q: Is the line card hot-swappable and does it support redundancy?
A: Yes, the DCS-7500R3-36CQ-LC is fully hot-swappable and can be inserted or removed without disrupting chassis operations. The 7500R3 architecture features redundant fabric connectivity with active-active fabric modules, ensuring graceful degradation and zero packet loss during fabric or line card maintenance.