Cloud Network Operating SystemDatasheet

15 Mar 2019
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Intelligent OS for today and the future

Low Total Cost of Ownership

The Lenovo Cloud Network Operating System (CNOS) provides great value to customers. With all features included and free updates and upgrades, Lenovo customers experience 24% to 50% lower operational expenses and 38% to 111% higher return on investment* than with other networking vendors.

Data Center Interoperability

The Lenovo CNOS is open and interoperable. It is designed from the ground up for modern software defined data centers and can scale out easily. Its intelligent, cloud-scale performance delivers a software defined Ethernet solution that is simple to manage and easy to deploy using common management tools and industry-standard CLI.

CNOS includes support for the leading management, automation, and orchestration applications for tight integration into the data center ecosystem. CNOS is standard on the Lenovo ThinkSystem RackSwitch family of switches and select G Series systems.

Intelligent Management and Control

CNOS has evolving smart applications for telemetry, machine learning, and software defined networking. You can monitor the health of the network, use our industry-first intelligent software to predict and prevent issues before they happen, and automatically optimize the network for smooth application performance. Stay ahead of the curve instead of finding out about network outages after the fact and reacting to them.

Lenovo intelligent Network Controller (LiNC) supports containers securely, migrates policies, and supports virtual machines (VMs) as well. Lenovo Network Advisor, a Splunk application, analyzes telemetry and presents recommendations for LiNC to mitigate with confirmation from the operator.

LiNC can manage and orchestrate multi-cloud data centers. It can help you to reduce risks and downtime while ensuring that your network is performing at an optimum level.

As your business grows, your network needs to grow and scale. Lenovo switches with CNOS for your network can grow seamlessly and interoperate with other vendor networks giving you the flexibility you need.

About Lenovo

Lenovo (HKSE: 992) (ADR: LNVGY) is a US$45 billion Fortune 500 company and a global technology leader in driving Intelligent Transformation. Lenovo’s data center solutions (ThinkSystem, ThinkAgile) are creating the capacity and computing power that are changing business and society.

For More Information

To learn more about the Lenovo Cloud Network Operating System, contact your Lenovo representative or Business Partner or visit: and click on a CNOS switch.


  Features Scale
Layer 2 VLAN (Port, Subnet), Reserved VLANs, Port based Q-in-Q (Tag-tpvid)
Root guard/Loop guard/BPDU guard, LACP, MSTP, PVRST, vLAG, LLDP, FDB (Static, Dynamic), Private VLAN, Layer 2 Failover
4K VLANs, 256 LLDP neighbors (per interface) 64 MST, 500 PVRST
Max LAG=Max Ports, 32 Members, FDB - 104/208/224K dynamic, 2K static
64 vLAG instances
Layer 2 Multicast IGMP Snooping, Static L2 Multicast 8K IGMP groups, 128 Mrouters (S+D), 2K Static L2 MC
IPv4 Unicast BGP, OSPFv2, ECMP (W), Loopback interfaces, ARP, Static routing, SVI, Routed Ports, VRRP, VRF, BFD, DHCP Relay, Route Maps, DNS Client, DHCP Snooping, Nexthop health-check (IP-SLA) 256 IP interfaces, 8 VRFs
256 Static routes, 16K routes, 48K ARPs, 32-ECMP, 512 RMAPs
255 VRRP routers, 256 OSPF neighbors, 96 BGP neighbors
100 BFD sessions
IPv6 Unicast Loopback interface, SVI, Routed Ports, IPv6, BGP, VRRP, Route Maps, DHCP Client, DHCP relay 256 Static routes, 6K IPv6 routes
40K Neighbor cache
100 BFD sessions
Platform ACL (MAC, IPv4, Port, VLAN), QOS, Remarking, PFC, Jumbo Frame, SPAN, ERSPAN, Storm Control, WRED, ECN, CoPP, Counters 4 SPAN, 2 ERSPAN
IPv4 ACL (IN) : 1536/3072, IPv4 ACL:(OUT) : 512
MAC ACL: 1536/3072, MAC VACL: 768/1536/3072
ARP ACL: 768/1536/3072
IP VACL :768/1536/3072
Infrastructure and Management SSH, Telnet, SNMP, CLI, SYSLOG, REST API, On-box Python Scripting, ONIE, NTP, File Transfer (SFTP, FTP, HTTP, SCP, TFTP),Traceroute, Dual Image 64 telnet, 64 SSH, 64 NTP servers
Security User access control, Radius, TACACS+, LDAP/LDAPS, Secure mode, PKI, NISTSP800-131A
Automation SLP, Chef, Puppet, Ansible, ZTP, ThinkAgile Network Orchestrator, Open Stack, Lenovo Network Analyzer, Dorado, Solarwinds, Nutanix Prism, VMware vRealize, VMware vSphere
Management Port mirroring (SPAN), ERSPAN. 2608 SLP
Telemetry Health Status, Buffer Utilization, Microburst, Traffic utilization, Congestion Counters, sFlow, Ganglia, Splunk, Lenovo Network Analyzer
Supported Switches Lenovo ThinkSystem NE RackSwitch Series (except for ONIE Models), Lenovo RackSwitch G8272, Lenovo RackSwitch G8296
Learn more about Lenovo Servers
Learn more about Lenovo Storage




Features Standards Conformance
VLAN, Subnet Based VLANs, Reserved VLANs, LACP, MSTP, PVRST, vLAG, LLDP, FDB (Static, Dynamic), Private VLAN, Layer 2 Failover, IGMP Snooping
  • IEEE 802.1Q-2005(MSTP), IEEE 802.1Q (VLAN), IEEE 802.3.AD -2002 (LACP)
  • IEEE 802.1AB -2005/9 (LLDP), RFC 5517(Private VLAN), RFC 4541, RFC 2236, RFC 3376 (IGMP)
  • IGMP Snooping, Layer 2 failover
  • RFC 5880 Bidirectional Forwarding Detection , RFC 5881: BFD for IPV4 and IPV6
  • RFC 5882:Generic application for BFD , RFC 5883: BFD for multi hop paths
  • RFC 1997: BGP communities, RFC 2385: TCP MD5, RFC 2439: Route flap dampening
  • RFC 5065: AS confederation for BGP, RFC 3392: Capability advertisement
  • RFC 4271 - BGP Protocol 4, RFC 4456: Route reflection
  • RFC 4486:Sub-codes for BGP cease notification, RFC 4724: Graceful restart
  • RFC 4893: Support for Four-Octet AS number, RFC 5396: Textual convention of AS numbers
  • RFC 1772 : Applications of BGP-4 in internet, RFC 4360: BGP extended communities
  • RFC 2918: BGP route refresh capability, RFC 5291: Out-bound route filtering for BGP-4
  • RFC 5292: Address-Prefix-based outbound route filter for BGP-4
  • RFC 2545 : Use of BGP-4 Multiprotocol Extensions for IPv6 Inter-Domain Routing
  • RFC 2328: OSPFV2, RFC 3623 : Graceful restart
  • RFC 3101: OSPF NSSA option, RFC 5250: The OSPF Opaque LSA Option
  • RFC 1370: Applicability statement for OSPF, RFC 1765: OSPF database overflow
  • RFC 3509: Alternative implementation of OSPF area border routers
  • RFC 4222: Prioritized treatment of OSPFV2 packets and congestion avoidance
  • RFC 5185: Multi-area adjacency, RFC 5243: Database exchange summary list optimization
  • RFC 3021: Using 31-Bit Prefixes on IPv4 Point-to-Point Links, RFC 1191: Path MTU Discovery
  • RFC 1519: Classless Inter-Domain Routing (CIDR), RFC 1812: Requirements for IP Version 4 Routers
  • RFC 793: TRANSMISSION CONTROL PROTOCOL(TCP), RFC 768: User Datagram Protocol
  • RFC 791: Internet protocol, RFC 792: INTERNET CONTROL MESSAGE PROTOCOL
  • RFC 826: An Ethernet Address Resolution Protocol, RFC 2131: Dynamic Host Configuration Protocol
  • RFC 5905: Network Time Protocol Version 4: Protocol and Algorithms Specification
  • RFC 5798
  • RFC 2460: IPv6 Specification, RFC 1981: Path MTU Discovery for IPv6
  • RFC 2461: Neighbor Discovery (ND) for IPv6 , RFC 2463: Internet Control Message Protocol (ICMPv6)
  • RFC 4291: IPv6 Address Architecture
Radius, TACACS+, LDAP/LDAPS, SSH, Telnet, SYSLOG, File Transfer(SFTP, FTP, HTTP, SCP, TFTP), Traceroute, SLP
  • RFC 854(Telnet), RFC 959 (FTP), RFC 1350 (FTP), RFC 3164(Syslog), RFC 4254 (SSHv2), RFC 2608 (SLP)
  • IEEE 802.1AB (DCBX), IEEE 802.1Qaz (ETS), IEEE 802.1Qbb (PFC)

* For more information, read Reference ACG Research article on Lenovo Networking TCO at

Related product families

Product families related to this document are the following:

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Availability: Offers, prices, specifications and availability may change without notice. Lenovo is not responsible for photographic or typographic errors. Warranty: For a copy of applicable warranties, write to: Lenovo Warranty Information, 1009 Think Place, Morrisville, NC, 27560. Lenovo makes no representation or warranty regarding third-party products or services.

Trademarks: Lenovo, the Lenovo logo, RackSwitch, ThinkAgile, and ThinkSystem are trademarks or registered trademarks of Lenovo. Other company, product, or service names may be trademarks or service marks of others.

Document number DS0061, published March 15, 2019. For the latest version, go to