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Cisco Nexus 3548 Switch: 190 nanosecond latency

by Jeremy L. Gaddis on September 19, 2012 · 0 comments

in Networking

Hot on the heels of the new Arista Networks 7150S series top-of-rack switches that offer latencies as low as 350 nanoseconds, Cisco came out with an announcement of their own, shattering the land speed record in the process.

Cisco Nexus 3548 with Algo Boost Technology

The newest addition to the Nexus line of high-performance datacenter switches, the Cisco Nexus 3548 is a top-of-rack switch that crams 48 SFP+ ports of up to 10 GbE goodness into a 1RU form factor.

“Industry-standard latency is 380+ nanoseconds. With the 3548, we are now able to break the 200 nanosecond barrier, which is a 60% performance improvement.” –Rajan Panchanathan, director of product management

The Cisco Nexus 3548 is the first of the Nexus line of switches to incorporates Cisco’s new Algorithm Boost (“Algo Boost”) Technology in custom-built ASICs, bringing port-to-port latency down to the 190 nanosecond range, even when forwarding frames OVER NINE THOUSAAAAAAAAAAND bytes in size.


Targeted at High Frequency Trading (HFT), High Performance Computing (HPC), and “Big Data” environments, and seemingly positioned to compete directly with Arista’s 7150S series, the Cisco Nexus 3548 comes equipped with a 4,000 ACL TCAM and 18 MB packet buffers.

In addition to supporting 10 GbE L2/L3 at line-rate across all 48 ports simultaneously and integrated Network Address Translation (NAT), the 3548 also supports IEEE 1588, the Precision Time Protocol, and the ability to combine four physical 10 GbE ports into a single 40 GbE interface (this is not your typical 4x10GbE link aggregation group).

The Nexus 3548 is officially being announced at 5 a.m. PDT (noon GMT) today. Pricing information was not available from Cisco.

Full disclosure: I’ve been a guest at the corporate offices of both Arista and Cisco and covered their products previously as part of the Gestalt IT Tech Field Day events, which both companies have sponsored.

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