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Cisco Nexus C3172PQ-10GE 48 Ports Switch

The Cisco Nexus 3172PQ is a 10-Gbps Enhanced Small Form-Factor Pluggable (SFP+)–based ToR switch with 48 SFP+ ports and 6 Quad SFP+ (QSFP+) ports. Each SFP+ port can operate in 100-Mbps, 1‑Gbps, or 10-Gbps mode, and each QSFP+ port can operate in native 40-Gbps or 4 x 10-Gbps mode. This switch is a true phy-less switch that is optimized for low latency and low power consumption.

 

Main Benefits

Wire-rate Layer 2 and 3 switching on all 72 10 Gigabit Ethernet ports

  • The Cisco Nexus 3172 switches provide Layer 2 and 3 switching of up to 1.4 terabits per second (Tbps) and up to 1 billion packets per second (bpps) in a compact 1RU form factor.

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.

High performance

  • The Cisco Nexus 3172 switches deliver ultra-low nominal latency, which allows customers to implement high‑performance infrastructure for high-frequency trading (HFT) workloads.
  • 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

  • Build simple, scalable and cost-effective network test access point (TAP) or Cisco Switched Port Analyzer (SPAN) aggregation for network traffic monitoring and analysis.

Layer 2

  • Layer 2 switch ports and VLAN trunks
  • IEEE 802.1Q VLAN encapsulation
  • Support for up to 4096 VLANs
  • Rapid Per-VLAN Spanning Tree Plus (PVRST+) (IEEE 802.1w compatible)
  • MSTP (IEEE 802.1s): 64 instances
  • Spanning Tree PortFast
  • Spanning Tree Root Guard
  • Spanning Tree Bridge Assurance
  • Cisco EtherChannel technology (up to 32 ports per EtherChannel)
  • LACP: IEEE 802.3ad
  • Advanced port-channel hashing based on Layer 2, 3, and 4 information
  • vPC
  • Jumbo frames on all ports (up to 9216 bytes)
  • Storm control (unicast, multicast, and broadcast)
  • Private VLANs
  • NvGRE entropy
  • Resilient hashing

Layer 3

  • Layer 3 interfaces: Routed ports on interfaces, switch virtual interfaces (SVIs), port channels, and subinterfaces (total: 1024)
  • 64-way ECMP
  • 4000 ingress and 1000 egress ACL entries
  • IPv6 routing: Static, OSPFv3, and BGPv6
  • Routing protocols: Static, RIPv2, EIGRP, OSPF, and BGP
  • Bidirectional Flow Detection (BFD) for BGP, OSPF, and IPv4 static routes
  • HSRP and VRRP
  • ACL: Routed ACL with Layer 3 and 4 options to match ingress and egress ACLs
  • VRF: VRF-lite (IP VPN), VRF-aware unicast (BGP, OSPF, and RIP), and VRF-aware multicast
  • Unicast Reverse-Path Forwarding (uRPF) with ACL; strict and loose modes
  • Jumbo frame support (up to 9216 bytes)
  • Generic Routing Encapsulation (GRE) tunneling
  • Advanced BGP features including BGP add-path for eBGP and iBGP, remove-private-as enhancements and eBGP next hop unchanged
  • IP-in-IP Tunnel support

Quality of Service (QoS)

  • Layer 2 IEEE 802.1p (class of service [CoS])
  • 8 hardware queues per port
  • Per-port QoS configuration
  • CoS trust
  • Port-based CoS assignment
  • Modular QoS CLI (MQC) compliance
  • ACL-based QoS classification (Layers 2, 3, and 4)
  • MQC CoS marking
  • Differentiated services code point (DSCP) marking
  • Weighted Random Early Detection (WRED)
  • CoS-based egress queuing
  • Egress strict-priority queuing
  • Egress port-based scheduling: Weighted Round-Robin (WRR)
  • Explicit Congestion Notification (ECN)
  • Configurable ECN marking per port
  • Priority Flow Control (with 3 no-drop queues and 1 default queue with strict priority scheduling between queues
  • Policy Based Routing (PBR)

Security

  • Ingress ACLs (standard and extended) on Ethernet
  • Standard and extended Layer 3 and 4 ACLs include IPv4, Internet Control Message Protocol (ICMP), TCP, and User Datagram Protocol (UDP)
  • VLAN-based ACLs (VACLs)
  • Port-based ACLs (PACLs)
  • Named ACLs
  • ACLs on virtual terminals (vtys)
  • DHCP snooping with Option 82
  • Port number in DHCP Option 82
  • DHCP relay
  • Dynamic Address Resolution Protocol (ARP) inspection
  • Configurable CoPP
  • SPAN with ACL filtering

Cisco Nexus Data Broker

  • Topology support for TAP and SPAN aggregation
  • Support for QinQ to tag input source TAP and SPAN ports
  • Configuration of symmetric hashing to load-balance traffic to multiple tools
  • Traffic filtering based on Layer 1 through Layer 4 header information
  • Traffic replication and forwarding to multiple monitoring tools
  • Robust RBAC
  • Northbound representational state transfer (REST) API for all programmability support

Multicast

  • Multicast: PIMv2, PIM-SM, and PIM-SSM
  • Bootstrap router (BSR), Auto-RP, and Static RP
  • MSDP and Anycast RP
  • Internet Group Management Protocol (IGMP) Versions 2 and 3

Management

  • POAP
  • Python scripting
  • Cisco EEM
  • Switch management using 10/100/1000-Mbps management or console ports
  • CLI-based console to provide detailed out-of-band management
  • In-band switch management
  • Locator and beacon LEDs
  • Configuration rollback
  • SSHv2
  • Secure Copy (SCP) server
  • Telnet
  • AAA
  • AAA with RBAC
  • RADIUS
  • TACACS+
  • Syslog
  • Syslog generation on system resources (for example, FIB tables)
  • Embedded packet analyzer
  • SNMP v1, v2, and v3
  • Enhanced SNMP MIB support
  • XML (NETCONF) support

 

 

  • Remote monitoring (RMON)
  • Advanced Encryption Standard (AES) for management traffic
  • Unified username and passwords across CLI and SNMP
  • Microsoft Challenge Handshake Authentication Protocol (MS-CHAP)
  • Digital certificates for management between switch and RADIUS server
  • Cisco Discovery Protocol Versions 1 and 2
  • RBAC
  • SPAN on physical layer, port channel, and VLAN
  • Tunable buffer allocation for SPAN
  • Encapsulated Remote SPAN (ERSPAN)
  • Ingress and egress packet counters per interface
  • PTP (IEEE 1588) boundary clock
  • Network Time Protocol (NTP)
  • Cisco OHMS
  • Comprehensive bootup diagnostic tests
  • Cisco Call Home
  • Cisco DCNM
  • Advanced buffer utilization monitoring
  • sFlow

Cisco Data Center Network Manager

The Cisco Nexus 3172 switches are supported in DCNM. DCNM is designed for the Cisco Nexus hardware platforms, which are enabled for NX-OS. DCNM is a Cisco management solution that increases overall data center infrastructure uptime and reliability, improving business continuity. Focused on the management requirements of the data center network, DCNM provides a robust framework and comprehensive feature set that can meet the routing, switching, and storage administration needs of present and future data centers. DCNM automates the provisioning process, proactively monitors the LAN by detecting performance degradation, secures the network, and simplifies the diagnosis of dysfunctional network elements.

Cisco Nexus Data Broker

The Cisco Nexus 3172 switches with Cisco Nexus Data Broker can be used to build a scalable and cost-effective traffic monitoring infrastructure using network TAPs and SPAN. This approach replaces the traditional purpose-built matrix switches with one or more OpenFlow-enabled Cisco Nexus switches. You can interconnect these switches to build a scalable TAP or SPAN aggregation infrastructure. You also can combine TAP and SPAN sources to bring the copy of the production traffic to this TAP or SPAN aggregation infrastructure. In addition, you can distribute these sources and traffic monitoring and analysis tools across multiple Cisco Nexus switches.

Software Licensing

Software Package Features Supported
System default: Base license (N3K-BAS1K9) included; no purchase necessary

Comprehensive Layer 2 feature set: VLAN, IEEE 802.1Q Trunking, vPC, Link Aggregation Control Protocol (LACP), Unidirectional Link Detection UDLD (standard and aggressive), Multiple Spanning Tree Protocol (MSTP), Rapid Spanning Tree Protocol (RSTP), spanning-tree guards, and Transparent VLAN Trunk Protocol (TVTP)

Security: Authentication, authorization, and accounting (AAA); access control lists (ACLs), Dynamic Host Configuration Protocol (DHCP) snooping, storm control, private VLAN (PVLAN), and configurable Control-Plane Policing (CoPP)

Management features: Cisco Data Center Network Manager (DCNM) support, console, Secure Shell Version 2 (SSHv2) access, Cisco Discovery Protocol, SNMP, and syslog

Layer 3 IP routing: inter-VLAN routing (IVR), static routes, RIPv2, ACLs, OSPFv2, EIGRP stub, Hot Standby Router Protocol (HSRP), Virtual Router Redundancy Protocol (VRRP), and Unicast Reverse-Path Forwarding (uRPF)

Multicast: PIM SM, SSM, and MSDP
LAN Enterprise license (N3K‑LAN1K9) Advanced Layer 3 IP routing: BGP, and Virtual Route Forwarding lite (VRF-lite)
Cisco Nexus Data Broker license (NDB-FX-SWT-K9) License for using the TAP and SPAN aggregation functions with Cisco Nexus Data Broker; only the Base license is needed for this feature

 

Technical Specifications

Physical

 
  • 1RU fixed form factor
  • 72 x 10 Gigabit Ethernet ports (48 SFP+ and 6 QSFP+)
  • 48 SFP ports support 1 and 10 Gigabit Ethernet
  • 6 QSFP ports support 4 x 10 Gigabit Ethernet or 40 Gigabit Ethernet each
  • Redundant fans (3+1)
  • 2 redundant power supplies
  • Management, console, and USB flash-memory ports
Performance
  • 1.4-Tbps switching capacity
  • Forwarding rate of up to 1 bpps
  • Line-rate traffic throughput (both Layer 2 and 3) on all ports
  • Configurable maximum transmission units (MTUs) of up to 9216 bytes (jumbo frames)
Hardware tables and scalability
Number of MAC addresses 288,000
Number of VLANS 4096
Number of spanning-tree instances RSTP: 512
MSTP: 64
Number of ACL entries 4000 ingress
1000 egress
Routing table 16,000 prefixes and 16,000 host entries*
8000 multicast routes*
Number of EtherChannels 64 (with vPC)
Number of ports per EtherChannel 32
System memory 4 GB
Buffer size 12 MB shared
Boot flash 16 GB
Power  
Number of power supplies 2
Power supply types AC (forward and reversed airflow)
- N2200-PAC-400W and N2200-PAC-400W-B
DC (forward and reversed airflow)
- N2200-PDC-400W and N3K-PDC-350W-B
Typical operating power 143 W
Maximum power 293W
AC PSUs Input voltage: 100 to 240 VAC
Frequency: 50 to 60 Hz
Efficiency: 89 to 91% at 220V
DC PSUs Input voltage: –40 to –72 VDC
Maximum current (PSU output – System input): 33A (400W unit), 42A (500W unit)
Efficiency: 85 to 88%
Cooling
  • Forward airflow: Port-side exhaust (air enters through fan-tray and power supplies and exits through ports)
  • Reversed airflow: Port-side intake (air enters through ports and exits through fan-tray and power supplies)
  • Redundant fans
  • Hot swappable (must swap within 1 minute)
Sound Measured sound power (maximum)
Fan speed: 40% duty cycle: 64.9 dBA
Fan speed: 70% duty cycle: 69.3 dBA
Fan speed: 100% duty cycle: 76.7 dBA
Environment  
Dimensions
(height x width x depth)		 1.72 x 17.3 x 17 in.
(4.4 x 43.9 x 43.2 cm)
Weight 18.6 lb (8 4 kg)
Operating temperature 32 to 104°F (0 to 40°C)
Storage temperature -40 to 158°F (-40 to 70°C)
Operating relative humidity 10 to 85% noncondensing
Up to 5 days at maximum (85%) humidity
Recommend ASHRAE data center environment
Storage relative humidity 5 to 95% noncondensing
Altitude 0 to 10,000 ft (0 to 3000m)