Cisco Nexus C31108PC-V User Manual

Data Sheet

Cisco Nexus 3100-V Platform Switches

Product Overview

The Cisco Nexus1 ® 3100-V series is the latest addition to the industry’s widely deployed Cisco Nexus 3100 platform. The Cisco Nexus 3100-V platform consists of high-density, low-power-consumption, and low-latency fixed-configuration data center switches with line-rate Layer 2 and 3 features that support enterprise applications, service provider hosting, high-performance computing (HPC), and cloud computing environments. These switches support a wide range of port speeds with flexible combinations of 1/10/40/100-Gbps connectivity with improved port density and scalability in compact 1-rack-unit (1RU) form factors.

The Cisco Nexus 3100-V platform runs the industry-leading Cisco® NX-OS Software operating system, which helps ensure continuous availability and sets the standard for mission-critical data center environments. The platform is designed for programmable fabric, which offers flexibility, mobility, and scalability for service providers and infrastructure-as-a-service (IaaS) and cloud providers; and for programmable networks, which automate configuration and management for customers who want to take advantage of the DevOps operating model and tool sets. It is well suited for data centers that require cost-effective, power-efficient, line-rate Layer 2 and 3 top-of-rack (ToR) switches. These switches also support forward and reverse airflow (port-side exhaust and port-side intake) schemes with AC and DC power inputs.

Features and Benefits

The Cisco Nexus 3100-V platform provides following benefits:

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High performance and scalability

◦ The Cisco Nexus 3100-V platform provides wire-rate Layer 2 and 3 switching of up to 2.56 terabits per

second (Tbps) and up to 1.4 billion packets per second (bpps) on all ports.

◦ The Cisco Nexus 3100-V platform delivers ultra-low nominal latency (approximately 650 nanoseconds

[ns]), which allows customers to implement high performance infrastructure for high-frequency-trading (HFT) workloads.

●

Line-rate Virtual Extensible LAN (VXLAN) routing

◦ VXLAN is designed to provide the same Ethernet Layer 2 network services as VLAN does today, but with

greater extensibility and flexibility.

◦ The Cisco Nexus 3100-V platform offers native line-rate VXLAN routing. ◦ The Border Gateway Protocol (BGP) Ethernet Virtual Private Network (EVPN) control plane provides

scalable multitenancy and host mobility (for more information, refer to the document “VXLAN Network with MP-BGP EVPN Control Plane

Wire-rate on all ports for packets >200bytes

●

Enhanced buffer for applications

◦ The Cisco Nexus 3100-V platform offers 16 MB of shared buffer space.

In today’s data center, application teams require the network to be flexible and capable of handling the rapid growth of applications. The Cisco Nexus 3100-V platform provides deep shared buffers (16 MB) to absorb bursts of traffic and a wide variety of applications, such as multicast feeds, voice traffic, video traffic, and healthcare applications.

◦ These deep buffers also provide flexibility to expand your network as your needs change. The shared

buffers are also instrumental in situations in which one or more servers are consuming most of the bandwidth in highly oversubscribed environments.

●

Higher ingress access control list (ACL) entries

◦ The Cisco Nexus 3100-V platform offer 16,000 ACL entries and 1000 egress ACL entries. ◦ The increased number of ingress ACL entries can be especially useful in today’s data centers,

particularly in virtualized environments.

●

High availability

◦ Virtual-port-channel (vPC) technology provides Layer 2 multipathing through the elimination of Spanning

Tree Protocol. It also enables fully utilized bisectional bandwidth and simplified Layer 2 logical topologies without the need to change the existing management and deployment models.

◦ The 64-way equal-cost multipath (ECMP) routing enables the use of Layer 3 fat-tree designs and allows

organizations to prevent network bottlenecks, increase resiliency, and add capacity with little network disruption.

◦ Advanced reboot capabilities

are included through In Service Software Upgrade (ISSU) and Fast Reboot

capabilities.

◦ Power-supply units (PSUs) and fans are hot swappable.

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Purpose-built on the NX-OS operating system with comprehensive, proven innovations

◦ Power-on auto provisioning (POAP) enables touchless bootup and configuration of the switch, drastically

reducing provisioning time.

◦ Cisco Embedded Event Manager (EEM) and Python scripting enable automation and remote operations

in the data center.

◦ Advanced buffer monitoring reports real-time buffer use per port and per queue, which allows

organizations to monitor traffic bursts and application traffic patterns.

◦ Ethanalyzer is a built-in packet analyzer for monitoring and troubleshooting control-plane traffic and is

based on the popular Wireshark open-source network protocol analyzer.

◦ Precision Time Protocol (PTP; IEEE 1588) provides accurate clock synchronization and improved data

correlation with network captures and system events.

◦ Complete Layer 3 unicast and multicast routing protocol suites are supported, including Border Gateway

Protocol (BGP), Open Shortest Path First (OSPF), Enhanced Interior Gateway Routing Protocol (EIGRP), Routing Information Protocol Version 2 (RIPv2), Protocol-Independent Multicast sparse mode (PIM-SM), Source-Specific Multicast (SSM), and Multicast Source Discovery Protocol (MSDP).

●

Network traffic monitoring with Cisco Nexus Data Broker

Not available at FCS

Model

Description

Cisco Nexus 3132Q-V Switch

32 x 40-Gbps QSFP+ ports (all ports are capable of 10 or 40 Gbps)

Cisco Nexus 31108PC-V Switch

48 x 10-Gbps SFP+ ports and 6 x QSFP28 ports (all QSFP ports can operate at 40 or 100 Gbps)

Cisco Nexus 31108TC-V Switch

48 x 10GBASE-T ports and 6 x QSFP28 ports (all QSFP ports can operate at 40 or 100 Gbps)

◦ Build simple, scalable and cost-effective network test access point (TAP) or Cisco Switched Port

Analyzer (SPAN) aggregation for network traffic monitoring and analysis.

Models and Configuration

Table 1 summarizes the Cisco Nexus 3100-V platform switch models.

Table 1. Cisco Nexus 3100-V Platform Switches Summary

●

The Cisco Nexus 3132Q-V (Figure 1) is a 40-Gbps Quad Small Form-Factor Pluggable (QSFP) switch with 32 Enhanced QSFP (QSFP+) ports. It also has 4 SFP+ ports that are internally multiplexed with the first QSFP port. Each QSFP+ port can operate in native 40-Gbps mode or 4 x 10-Gbps mode, with up to a maximum of 104 x 10-Gbps ports.

Figure 1. Cisco Nexus 3132Q-V Switch

●

The Cisco Nexus 31108PC-V (Figure 2) is a 10-Gbps SFP+)–based ToR switch with 48 SFP+ ports and 6 QSFP28 ports. Each SFP+ port can operate in 100-Mbps, 1 Gbps, or 10-Gbps mode, and each QSFP28 port can operate in native 100-Gbps or 40-Gbps mode or 4 x 10-Gbps mode, offering flexible migration options. This switch is a true PHY-less switch that is optimized for low latency and low power consumption.

Figure 2. Cisco Nexus 31108PC-V Switch

●

The Cisco Nexus 31108TC-V (Figure 3) is a 10GBASE-T switch with 48 10GBASE-T ports and 6 QSFP28 ports. This switch is well suited for customers who want to reuse existing copper cabling while migrating from 1-Gbps to 10-Gbps servers. QSFP28 port can operate in native 100-Gbps or 40-Gbps mode or 4 x 10Gbps mode. The 48 ports support 100MBASE, 1GBASE, and 10GBASE-T, and the 6 QSFP ports support 10, 40, and 100 Gbps.

Figure 3. Cisco Nexus 31108TC-V Switch

Configurations

The Cisco Nexus 3100-V switches have the following configurations:

●

Cisco Nexus 3132Q-V

◦ 32 fixed 40 Gigabit Ethernet QSFP+ ports ◦ 4 SFP+ ports, which are multiplexed internally with the first QSFP+ port

Note: There are 3 operating modes for this switch. Changing operating mode requires reboot.

Mode 1: the first 24 QSFP ports can be used at 40G or 4x10G breakout, the last 8 ports can be at 40G only.

Mode 2: the first 26 QSFP ports can be used in 4x10G breakout to achieve a maximum of 104 10G ports. The last 6 ports are not used.

Mode 3: the first 24 QSFP ports can be used at full line rate at any packet size. The last 8 ports are not used.

●

Cisco Nexus 31108PC-V

◦ 48 fixed 10 Gigabit Ethernet SFP+ ports (can operate at 100-Mbps, 1-Gbps, and 10-Gbps speeds) ◦ 6 fixed QSFP28 ports (each QSFP28 port can support 40, 100, and 4 x 10 Gigabit Ethernet)

Note: The right-most QSFP ports can operate in 2 modes: 100/40G, or 40G/4x10G. Changing operating mode requires reboot.

●

Cisco Nexus 31108TC-V

◦ 48 fixed 10GBASE-T ports (can operate at 100-Mbps, 1-Gbps, and 10-Gbps speeds) ◦ 6 fixed QSFP28 ports (each QSFP28 port can support 40, 100, and 4 x 10 Gigabit Ethernet)

Note: The right-most QSFP ports can operate in 2 modes 100/40G, or 40G/4x10G. Changing operating mode requires reboot.

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Locator LED

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Dual redundant power supplies

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Redundant (3+1) and hot-swappable fans

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One 10/100/1000-Mbps management port

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One RS-232 serial console port

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One USB port

Support for both forward (port-side exhaust) and reverse (port-side intake) airflow schemes is available.

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