Arista DCS-7800R3-48CQM-LC 48x 100GB QSFP28 w/ MACsec Router Line Card

The DCS-7800R3-48CQM-LC is a 48-port 100GbE QSFP100 line card for the Arista 7800R3 Series with MACsec encryption. It fits the 7804R3, 7808R3, 7812R3 and 7816R3.

MACsec runs on the 100G ports only. Up to 48 100G interfaces are supported, and 48 40G interfaces are available when MACsec is not in use. That makes the card a fit for encrypted links between data centers or across campus fiber where traffic must be protected in transit.

Arista rates the card at 4.8 Tbps (9.6 Tbps full duplex) with system latency under 4 microseconds at 64 bytes. It has an 8 GB packet buffer. The card has no onboard CPU, relying on the chassis supervisor. Note that the 7816LR3 is not listed for this card, unlike the non-MACsec 48CQ.

Power draw is 620 W typical and 684 W maximum, higher than the non-MACsec 48CQ. The card weighs 20 lb and measures 18.9 x 2.1 x 17.8 inches (W x H x D). Optics are sold separately.

Line cards and fabric modules are hot-swappable in Arista modular chassis, so you can add or replace one without powering the chassis down.

For the rest of the chassis build, NetworkTigers also lists the DCS-7808R3-FM fabric module and the DCS-7800-SUP1A supervisor module.

This seller refurbished DCS-7800R3-48CQM-LC is tested, working, and covered by the NetworkTigers one-year warranty.