Datasheet

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Advanced traffic mirroring: The Algo Boost technology on the Cisco Nexus 3500 platform facilitates not only
network troubleshooting by supporting Switched Port Analyzer (SPAN) and Encapsulated Remote SPAN
(ERSPAN) technologies, but also in-service network monitoring with enhancements including the capability
to:
◦ Apply user-configurable filters to reduce the amount of captured traffic to a specified flow or protocol
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◦ Capture a sample of eligible packets, such as one out of every thousand
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◦ Truncate packets after a user-defined threshold
◦ Insert a nanosecond-level timestamp in the ERSPAN header of captured packets (requires ERSPAN and
Precision Time Protocol [PTP])
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IEEE 1588 PTP with pulse-per-second (PPS) output
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◦ The capability to build and maintain a synchronized, accurate timing solution is the basis for successful
provisioning and management of HFT networks and applications. Using IEEE 1588 PTP, Cisco Nexus
3000 Series Switches can deliver highly accurate precision time synchronization to applications within
existing network infrastructure with no need to invest in and deploy a separate timing network.
◦ Network administrators deploying IEEE 1588 PTP often find it challenging to measure the accuracy to
which each device is synchronized. To assist in this effort, the Cisco Nexus 3500 platform includes a
1-PPS output port that can be used to measure timing drift from the grandmaster clock.
Cisco Nexus 3548 Switch
The Cisco Nexus 3548 Switch (Figure 1), the first member of the Cisco Nexus 3500 platform, is a compact one-
rack-unit (1RU) form-factor 10 Gigabit Ethernet switch providing line-rate Layer 2 and 3 switching with ultra-low
latency. The switch runs the industry-leading Cisco NX-OS Software operating system, providing customers with
comprehensive features and functions that are widely deployed globally. The Cisco Nexus 3548 contains no
physical layer (PHY) chips, allowing low latency and low power consumption. This switch supports both forward
and reversed airflow schemes and both AC and DC power inputs.
Figure 1. Cisco Nexus 3548 Switch
The Cisco Nexus 3548 has the following hardware configuration:
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48 fixed Enhanced Small Form-Factor Pluggable (SFP+) ports (1 or 10 Gbps)
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Dual redundant, hot-swappable power supplies
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Four individual, redundant, hot-swappable fans
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One 1-PPS timing port, with the RF1.0/2.3 QuickConnect connector type
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Two 10/100/1000 management ports
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One RS-232 serial console port
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One USB port
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1-PPS output will be enabled in a future software revision.