Dual port high precision capture and low latency NIC
The Cisco Nexus® NIC HPT is a 10Gbps, 0.25 nanosecond resolution, network capture card.
Supports full line-rate capture with High Resolution Timestamps (HPT). High speed capture can be performed to both standard PCAPs (with nanosecond resolution) and enhanced PCAPs (with picosecond resolution) using our free open source Exact Capture software 1. Timestamps are also delivered directly through intuitive C and Python based APIs. Measurements using the device have a standard deviation of just 0.2ns
Programable flow steering and load balancing delivers packets to the right cores.
For demanding capture applications, load balancing automatically distributes flows across a collection of receive queues to make the most of CPU parallelism For those who need more control, flow steering directs traffic to specified threads or cores based on programable rules. Each Cisco Nexus NIC HPT port supports up to 128 programable flow steering rules that direct traffic to 32 user accessible buffers.
The Cisco Nexus NIC HPT Pulse-Per-Second (PPS) input can be used to synchronize the HPT clock with a PPS source such as a Grand Master and/or GPS receiver to within 1ns, allowing users to meaningfully compare captured timestamps across multiple servers and/or geographic locations. The Cisco Nexus NIC HPT can also generate PPS output to master other devices in a rack and hardware assists Precision Time Protocol (PTP IEEE1588) packets for 2ns time synchronisation across machines.
The Cisco Nexus NIC HPT is also an ultra low latency network interface card.
Designed from the ground up to minimize latency, the Cisco Nexus NIC HPT delivers record-breaking performance numbers. On an Intel Ivy Bridge test system, median latency from application to network to application is 780 nanoseconds for small packets, which is significantly better than competing network cards on the same hardware. Half round trip TCP latencies are as low as 930 nanoseconds for small payloads.
The Cisco Nexus NIC HPT includes a transparent TCP/UDP acceleration and direct, low-level access library, and a standard Linux driver
The Nexus NIC HPT transparent socket acceleration library allows applications to benefit from the low latency of kernel bypass, in most cases without modifications to the applications. For the most latency sensitive applications, a library called ‘libexanic’ allows direct low-level access to the Nexus NIC hardware and includes simple functions for sending and receiving Ethernet frames.
Cisco Nexus NIC HPT
Typical latency, raw frames2:
● 64 bytes: 780 ns
● 256 bytes: 1 µs
Typical latency, raw frames with preloaded TX buffer2:
● 64 bytes: 710 ns
● 256 bytes: 930 ns
Typical latency, UDP3:
● 14 bytes: 880 ns
● 256 bytes: 1.2 µs
Typical Latency, TCP3:
● 14 bytes: 930 ns
● 256 bytes: 1.2 µs
● 0.25ns, σ=0.2ns
● all received frames, most recent
● transmitted frame
● Host, hardware assisted PTP, optional PPS
● 3.3V CMOS, selectable 50ohm termination
● High-precision oscillator
● Low-profile PCI Express Card
● 150x68mm (5.91x2.67in)
● 2 SFP+
● SMA for PPS in/out
● 10GbE, 1GbE, 100M Fast Ethernet
● Fiber (10GBASE-SR, 10GBASE-LR, 1000BASE-SX), SFP+ Direct Attach
● PCIe x8 Gen 3 @ 8.0 GT/s per lane
● Linux x86_64 (all distributions)
● Line rate capture to disk
● 128 IP rules per port
● 64 MAC rules per port
Information about Cisco’s environmental sustainability policies and initiatives for our products, solutions, operations, and extended operations or supply chain is provided in the “Environment Sustainability” section of Cisco’s Corporate Social Responsibility (CSR) Report.
Reference links to information about key environmental sustainability topics (mentioned in the “Environment Sustainability” section of the CSR Report) are provided in the following table:
Information on product material content laws and regulations
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