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Nexus 3636C-S switch, 36p QSFP28 MACSEC # N3K-C3636C-R

Sale Price: US$  18,567.00  (78.0% OFF)

List Price: US$  84,396.00

Condition: New Sealed

Delivery Time: Exstock

The Cisco Nexus® 3636C-R switch is a high-speed, high-density 10-, 25-, 40-, or 100-Gigabit Ethernet (GE) switch designed for the data center spine. The large buffers and routing table sizes of the 3636C-R also make this switch an alternative for a wide range of applications, such as IP storage, demilitarized zone (DMZ), big data, and edge routing. The switch comes in a compact 1-Rack-Unit (1RU) form factor and provides extensive Layer 2 and Layer 3 functions. It is part of the R-Series family and runs industry-leading Cisco® NX-OS Software.

The comprehensive programmability features enable organizations to run today’s applications while also preparing them for demanding and changing application needs. The Cisco Nexus 3636C-R switch supports both forward and reverse (port-side exhaust and port-side intake) airflow schemes with AC and DC power inputs.

The 3636C-R (Figure 1) is a Quad Small Form-Factor Pluggable (QSFP) switch with 36 QSFP28 ports. Each QSFP28 can operate at 100 or 40 Gigabit Ethernet or in a breakout cable configuration.

Figure 1.   

Cisco Nexus 3636C-R switch

Main benefits

The Cisco Nexus 3636C-R switch provides:

  • Wire-rate Layer 2 and 3 switching on all ports*with up to 7.2 Terabits per second (Tbps) and up to 3.34 billion packets per second (bpps).
  • Programmabilitywith support for the Cisco NX-API, Linux containers, XML, and JavaScript Object Notation (JSON) APIs, the OpenStack plug-in, Python, and Puppet and Chef configuration and automation tools.
  • High performance and scalabilitywith an 8-core CPU, 32 GB of DRAM, and 16 GB of dynamic buffer allocation, making the switch excellent for massively scalable data centers and big-data applications.
  • MACSec capability*
  • Higher TCAM capability
  • Flexibility:

◦     Fiber cabling solutions are available for 10-, 25-, 40-, 50-, and 100-Gbps connectivity, including Active Optical Cable (AOC) and Direct-Attached Cable (DAC).

◦     Configurable QSFP28 Uplinks to work as 4 x 25-Gbps or 4 x 10-Gbps port.

  • High availability:

◦     Virtual Port Channel (VPC) technology provides Layer 2 multipathing by eliminating the Spanning Tree Protocol. It also enables fully used bisectional bandwidth and simplified Layer 2 logical topologies without the need to change the existing management and deployment models.

◦     Advanced maintenance capabilities include hot and cold patching and Graceful Insertion and Removal (GIR) mode.

◦     The switch uses hot-swappable Power-Supply Units (PSUs) and fans.

  • 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.

◦     EtherAnalyzer is a built-in packet analyzer for monitoring and troubleshooting control-plane traffic that is based on the popular Wireshark open-source network protocol analyzer.

◦     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).

* Please check release notes for NX-OS support


The Cisco Nexus 3636C-R has the following configuration:

  • 36 QSFP28 ports operating at 40 or 100 Gigabit Ethernet
  • 8 ports that can be used for MACSec
  • Locator LED
  • Environment LED
  • Status LED
  • Dual redundant power supplies
  • 3 redundant fans
  • One 10-, 100-, or 1000-Mbps management port (copper or fiber)
  • One RS-232 serial console port
  • One USB port

Transceiver and cabling options

The Cisco Nexus 3636C-R has 36 QSFP28 ports that support a wide range of speed, from 10- or 25- Gbps with breakout cable.

The Cisco Nexus 3636C-R QSFP28 technology allows a smooth transition from 40- to 100-Gigabit Ethernet infrastructure in data centers. Each of the switch’s QSFP28 ports can operate in native 100- or 40-Gigabit Ethernet mode or 4 x 10 or 4 x 25 Gigabit Ethernet mode.

Please refer to the latest compatibility matrix for information on all supported optics:

For more information about the transceiver types, visit:

Cisco NX-OS software benefits

Cisco NX-OS Software is a data center-class operating system built with modularity, resiliency, and serviceability at its foundation. It helps ensure continuous availability and sets the standard for mission-critical data center environments. The self-healing and highly modular design of NX-OS makes zero-impact operations a reality and enables exceptional operation flexibility.

Focused on the requirements of the data center, NX-OS provides a robust and comprehensive feature set that meets the networking requirements of present and future data centers. With an XML interface and a command-line interface like that of the Cisco IOS® Software solution, NX-OS provides state-of-the-art implementations of relevant networking standards as well as a variety of true data center-class Cisco innovations.

Table 1 summarizes the benefits that NX-OS offers, and Table 2 lists the NX-OS packages available for the Cisco Nexus 3636C-R switch.

Table 1.  Benefits of Cisco NX-OS Software

Feature Benefit
Software compatibility: NX-OS interoperates with Cisco products running any variant of Cisco IOS Software and also with any networking OS that conforms to the networking standards listed as supported in this data sheet. ●  Transparent operation with existing network infrastructure

●  Open standards

●  No compatibility concerns

Modular software design: NX-OS is designed to support distributed multithreaded processing. Its modular processes are instantiated on demand, each in a separate protected memory space. Thus processes are started and system resources allocated only when a feature is enabled. A real-time preemptive scheduler that helps ensure timely processing of critical functions governs the modular processes. ●  Robust software

●  Fault tolerance

●  Increased scalability

●  Increased network availability

Troubleshooting and diagnostics: NX-OS is built with innovative serviceability functions to enable network operators to take early action based on network trends and events, enhancing network planning and improving Network-Operations-Center (NOC) and vendor response times. ●  Quick problem isolation and resolution

●  Continuous system monitoring and proactive notifications

●  Improved productivity of operations teams

Ease of management: NX-OS provides a programmatic XML interface based on the NETCONF industry standard. The NX-OS XML interface provides a consistent API for devices. NX-OS also supports Simple Network Management Protocol (SNMP) Versions 1, 2, and 3 MIBs. In addition, NX-API and Linux Bash are now supported. ●  Rapid development and creation of tools for enhanced management

● Comprehensive SNMP MIB support for efficient remote monitoring

Role-Based Access Control (RBAC): With RBAC, NX-OS enables administrators to limit access to switch operations by assigning roles to users. Administrators can customize access and restrict it to the users who require it. ●  Tight access control mechanism based on user roles

●  Improved network device security

●  Reduction in network problems arising from human errors

Table 2.  Cisco NX-OS Software packages available for Cisco Nexus 3636C-R*

Packaging Chassis Based Part Number Supported Features
Cisco Nexus 3636C-R Enhanced Layer 3 license Chassis N3K-LAN1K9 Layer 3 including full OSPF, EIGRP, BGP

* Cisco Nexus 3636C-R uses the Cisco Nexus 9000 licensing scheme. For more information please refer to

Product specifications

Table 3 lists the specifications for the Cisco Nexus 3636C-R.

Table 3.  Specifications

Description Specification
Physical ●  1RU fixed-form-factor switch

●  36 QSFP28 ports; each supports native 100-GE and 40-GE mode

●  2 redundant power supplies

●  3 redundant fans

●  Lane select LED button

●  Management, console, and USB flash-memory ports

Performance ●  7.2-Tbps switching capacity

●  Forwarding rate of up to 3.34 bpps

●  Line-rate traffic throughput (both Layer 2 and 3) on all ports for packet size larger than 115 bytes

●  Configurable Maximum Transmission Unit (MTU) of up to 9216 bytes (jumbo frames)

Hardware tables and scalability* Number of MAC addresses 750,000
Number of Virtual LANs (VLANs) 4096
Number of spanning-tree instances ●  Rapid Spanning Tree Protocol (RSTP): 512

●  Multiple Spanning Tree Protocol (MSTP): 64

Number of Access Control List (ACL) entries ●  7000 ingress
Routing table* ●  Maximum number of Longest-Prefix-Match (LPM) routes: 128,000

●  Maximum number of IP host entries:750,000

●  Maximum number of MAC address entries: 192,000

●  Maximum number of Layer 3 multicast entries: 64,000

Number of EtherChannels 256 (with VPC)
Number of ports per EtherChannel 32
Buffer size 16 GB
System memory 32 GB
Boot-flash memory 128 GB
Frequency 50 to 60 Hz
Power Power-supply types AC (forward and reverse airflow) DC (port-side exhaust)
Typical operating power 921 Watt (W)
Maximum power 1,341W
AC Power-Supply Units (PSUs)

●  Input voltage

●  Frequency

●  Power-supply efficiency


●  100 to 240 VAC

●  50 to 60 Hz

●  89–91% at 220V

Cooling Maximum heat dissipation 2,631 MBtuTU
●  Forward and reverse airflow schemes

o  Forward airflow: Port-side exhaust (air enters through fan tray and power supplies and exits through ports)

o  Reverse airflow: Port-side intake (air enters through ports and exits through fan tray and power supplies)

●  Redundant fans

Hot-swappable (must swap within 31 minutes)

Sound Measured sound power (maximum)

●  Fan speed (PE): 50% duty cycle

●  Fan speed (PE): 90% duty cycle

●  Fan speed (PI) 50% duty cycle

●  Fan speed (PI) 90% duty cycle

Fan speed: 100% duty cycle


●  74.6 dBA

●  87.5 dBA

●  76.2 dBA

●  90.0 dBA

Dimensions (height x width x depth) 1.65 x 17.3 x 31.22 in. (4.2 x 44 x 79.3 cm)
Weight ●  35.627.1 lb (12.316.1 kg)
Environment Temperature: Operating 32 to 104°F (0 to 40°C)
Temperature: Storage –40 to 158°F (–40 to 70°C)
Relative humidity: Operating ●  10– to 85% noncondensing

●  Up to 5 days at maximum (85%) humidity

Recommend American Society of Heating, Refrigeration, and Air-Conditioning Engineers (ASHRAE) data center environment

Relative humidity: Storage 5 –to 95% noncondensing
Altitude ●  0– to 10,000 ft (0 to 3000m)
Mean Time Between Failures (MTBF) 194,870 hours

* Denotes Application-Specific Integrated Circuit (ASIC) capabilities; please refer to Cisco Nexus 3000 Series Verified Scalability Guide documentation for exact scalability numbers validated for specific software releases:

Software features

Please refer to the latest release notes for a list of software features supported by the Cisco Nexus 3000 platform:


Table 4 lists management standards supported by the Cisco Nexus 3000 platform.

Table 4.    Management and standards support

Description Specification
MIB support Generic MIBs



●  SNMPv2-TM

●  SNMPv2-TC


●  IANA-Type-MIB

●  IANA iprouteprotocol-MIB












Ethernet MIBs




Configuration MIBs













Monitoring MIBs







Security MIBs






Miscellaneous MIBs





Layer 3 and Routing MIBs






Standards ●  IEEE 802.1D: Spanning Tree Protocol

●  IEEE 802.1p: Class-of-Service (CoS) Prioritization

●  IEEE 802.1Q: VLAN Tagging

●  IEEE 802.1s: Multiple VLAN Instances of Spanning Tree Protocol

●  IEEE 802.1w: Rapid Reconfiguration of Spanning Tree Protocol

●  IEEE 802.3z: Gigabit Ethernet

●  IEEE 802.3ad: Link Aggregation Control Protocol (LACP)

●  IEEE 802.3ae: 10 Gigabit Ethernet

●  IEEE 802.1ab: Link Layer Discovery Protocol (LLDP)


●  RFC 1997: BGP Communities Attribute

●  RFC 2385: Protection of BGP Sessions with the TCP MD5 Signature Option

●  RFC 2439: BGP Route Flap Damping

●  RFC 2519: A Framework for Inter-Domain Route Aggregation

●  RFC 2545: Use of BGPv4 Multiprotocol Extensions

●  RFC 2858: Multiprotocol Extensions for BGPv4

●  RFC 3065: Autonomous System Confederations for BGP

●  RFC 3392: Capabilities Advertisement with BGPv4

●  RFC 4271: BGPv4

●  RFC 4273: BGPv4 MIB: Definitions of Managed Objects for BGPv4

●  RFC 4456: BGP Route Reflection

●  RFC 4486: Subcodes for BGP Cease Notification Message

●  RFC 4724: Graceful Restart Mechanism for BGP

●  RFC 4893: BGP Support for Four-Octet AS Number Space

●  RFC 5549: BGP IPv4 NLRIs with an IPv6 next hop


●  RFC 2328: OSPF Version 2

●  8431RFC 3101: OSPF Not-So-Stubby-Area (NSSA) Option

●  RFC 3137: OSPF Stub Router Advertisement

●  RFC 3509: Alternative Implementations of OSPF Area Border Routers

●  RFC 3623: Graceful OSPF Restart

●  RFC 4750: OSPF Version 2 MIB


●  RFC 1724: RIPv2 MIB Extension

●  RFC 2082: RIPv2 MD5 Authentication

●  RFC 2453: RIP Version 2

IP services

●  RFC 768: User Datagram Protocol (UDP)

●  RFC 783: Trivial File Transfer Protocol (TFTP)

●  RFC 791: IP

●  RFC 792: ICMP

●  RFC 793: TCP

●  RFC 826: ARP

●  RFC 854: Telnet

●  RFC 959: FTP

●  RFC 1027: Proxy ARP

●  RFC 1305: Network Time Protocol (NTP) Version 3

●  RFC 1519: Classless Interdomain Routing (CIDR)

●  RFC 1542: BOOTP Relay

●  RFC 1591: Domain Name System (DNS) Client

●  RFC 1812: IPv4 Routers

●  RFC 2131: DHCP Helper

●  RFC 2338: VRRP

IP Multicast

●  RFC 2236: Internet Group Management Protocol, Version 2

●  RFC 3376: Internet Group Management Protocol, Version 3

●  RFC 3446: Anycast Rendezvous Point Mechanism Using PIM and MSDP

●  RFC 3569: An Overview of SSM

●  RFC 3618: Multicast Source Discovery Protocol (MSDP)

●  RFC 4601: Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)

●  RFC 4607: Source-Specific Multicast for IP

●  RFC 4610: Anycast-RP using PIM

●  RFC 5132: IP Multicast MIB

Regulatory standards compliance

Table 5 summarizes regulatory standards compliance for the Cisco Nexus 3000 platform.

Table 5.  Regulatory standards compliance: Safety and electromagnetic compatibility (EMC)

Specification Description
Regulatory compliance Products should comply with CE markings according to directives 2004/108/EC and 2006/95/EC.
Safety ●  UL 60950-1

●  CAN/CSA-C22.2 No. 60950-1EN 60950-1

●  IEC 60950-1AS/NZS 60950-1GB4943

EMC: Emissions ●  47CFR Part 15 (CFR 47) Class A

●  AS/NZS CISPR22 Class A

●  CISPR22 Class A

●  EN55022 Class A

●  ICES003 Class A

●  VCCI Class A

●  EN61000-3-2

●  EN61000-3-3

●  KN22 Class A

●  CNS13438 Class A

EMC: Immunity ●  EN50082-1

●  EN61000-6-1

●  EN55024

●  CISPR24

●  EN300386

●  KN 61000-4 series

Ordering information

Table 6 provides ordering information for the Cisco Nexus 3636C-R.

Table 6.  Ordering information

Part Number Description
N3K-C3636C-R Nexus 3636C-R switch, 36p QSFP28 MACSEC
NXA-FAN-65CFM-PI Nexus Fan, 65CFM, port side intake airflow
NXA-FAN-65CFM-PE Nexus Fan, 65CFM, port side exhaust airflow
NXA-PAC-2KW-PI Nexus 9000 2KW AC Power Supply, Port-side Intake
NXA-PAC-2KW-PE Nexus 9000 2KW AC Power Supply, Port-side Exhaust
NXA-PDC-2KW-PI Nexus 9000 2KW DC Power Supply, Port-side Intake
NXA-PDC-2KW-PE Nexus 9000 2KW DC Power Supply, Port-side Exhaust
Software Licenses
N3K-LAN1K9XL Nexus 3000 Layer 3 LAN Enterprise License
N3K-C3636C-R= Nexus 36180YC-R, 48p 10/25G and 6p QSFP28, Spare
NXA-FAN-65CFM-PI= Nexus Fan, 65CFM, port side intake airflow
NXA-FAN-65CFM-PE= Nexus Fan, 65CFM, port side exhaust airflow
NXA-PAC-2KW-PI= Nexus 9000 2KW AC Power Supply, Port-side Intake
NXA-PAC-2KW-PE= Nexus 9000 2KW AC Power Supply, Port-side Exhaust
NXA-PDC-2KW-PI= Nexus 9000 2KW DC Power Supply, Port-side Intake
NXA-PDC-2KW-PE= Nexus 9000 2KW DC Power Supply, Port-side Exhaust

 Nexus 3636C-S switch, 36p QSFP28 MACSEC # N3K-C3636C-R