The Cisco Nexus v is a virtual platform that is designed to simulate the control plane aspects of a network element running Cisco Nexus software. The Cisco Nexus v shares the same software image running on Cisco Nexus hardware platform although no specific hardware emulation is implemented. The Cisco Nexus v for the Cisco Nexus Series provides a useful tool to enable the devops model and rapidly test changes to the infrastructure or to infrastructure automation tools.

This enables customers to validate configuration changes on a simulated network prior to applying them on a production network. Some users have also expressed interest in using the simulation system for feature test, verification, and automation tooling development and test simulation prior to deployment. Cisco Nexus v does not support the VGA console. You must provision a serial console on a VM to access the Nexus v switch prompt on initial boot.

For the solution, the following Linux Bridge settings should be configured. In the example, assume vb7af2d7abd0 is the Linux Bridge that is used for connecting two VMs. For the solution, complete the following steps:. The multicast packet may not flow through the Linux Bridge.

For the web speech api, disable the STP running on the Linux Bridge using the brctl setageing vb7af2d7abd0 0 command. After initial setup of the Cisco Nexus v, you must configure the booting image in your system. Cisco Nexus v does not support VGA console. You must provision the serial console on any VM to access the Cisco Nexus v switch prompt on initial boot.

Maximum interfaces can be supported on the Cisco Nexus v VM depending on the hypervisor capability. Do not connect any data port vNIC to any physical switch that conflicts with your server management connectivity. Cisco Nexus v only supports the ESXi standard vSwitch when VMs are interconnected within a hypervisor or an external physical switch.

The vSwitch mapping to data port interface is required to have Promiscuous Mode as the Accept mode in order to pass traffic between VMs. It also forwards broadcast, unknown unicast, and multicast traffic as expected by classic bridging logic.

Do not connect the Cisco Nexus v data plane interfaces to the upstream network in a manner that would create bridging loops or interfere with upstream STP operation. You must decrease the size of an existing TCAM region before using this command. This virtual platform provides these virtualization benefits in a cloud environment and you are not limited to the type of hardware as well as other resources.

This virtual platform provides these virtualization benefits in a cloud environment and users is not limited to hardware as well as other resources. The resources used by Cisco Nexus v are managed by the hypervisor, and can be shared among VMs. The amount of hardware resources that VM sever allocates to a specific VM, can be reallocated to another VM on the server.

You can easily move a VM from one server to another, Thus, you can move the Cisco Nexus v from a server in one physical location to a server in another physical location without moving any hardware resources.

Users can change network connectivity and configuration in a matter of mins without any physical cabling. The Cisco Nexus v features in this table have been verified to operate only with the Cisco devices mentioned in this document.

cisco nexus 9000v configuration guide

If a networking or system feature is not identified as a supported feature in this document, it should be considered as unsupported despite that it may seem to work correctly. Unsupported features did not have any level of regression testing on Cisco Nexus v. It maintains its own MAC Table. The consistency checker has a hardware dependency and hence is not supported on Cisco Nexus v. Low data plane performance.

Additional rate limiter is in place to limit the total amount of traffic received by Cisco Nexus v to 4M. Connectivity between the two ends of the interface link is simulated, hence it is important that you shut the interface in both the ends, followed by no shut at both the ends of the interface link.

Feature enablement in the Cisco Nexus v virtual platform is the same as Cisco Nexus hardware platform.So I finally had a project with Cisco Nexus switches to finally get hands on experience on these boxes.

I am no longer a fanboy of Cisco, so just practically, this article is a summary of my notes and example configurations that I have put together as a documentation for myself and now I will kind of share them with you.

cisco nexus 9000v configuration guide

First of all, when I started writing this article it was November and Nexus were just released, note that this articles is based on Nexus series and not the new series. Sorry, not chance to get to yet, maybe later. Similarly as with my previous IOS XR Getting Started Guide part 1 and part 2I will go over the very quick overview and then show basically a snapshots of configuring some elemental configurations.

Cisco Security

What is more important on Nexus in comparison to what I consider the usual is the more strict license rules. To check what licenses are currently loaded to your Nexus, check the show license usage. And this is something that I really love, you can create your something called checkpoints of the configuration so that you are very easily able to do recovery to older configurations very easily and quickly.

Nexus vPC - How vPC works

In the following example I will create loopback 1 interface with IP 1. Once done, you can see how nicely you can recover back to the original configuration with IP 1. So lets start with the first technology, the VDC is something like VRF on steroids, you can separate the nexus system into several small individual systems with their own resources, dedicated interfaces and independent configuration files.

By default you can have 8 VDC contexts on a Nexusbut right now I will just use a few to illustrate what this brings to us. Then you can allocate interfaces to the created VDC with allocate interface command. As you see, there is a limit with F2 modules, that are not by default allowed as you can see on show vdc above and then we can allocate the interfaces without error. Just to check the port allocations, you can have a look on show vdc membership module command.

Each VDC has a resource limits associated with it, you can check the defaults already appeared in the running-config in vdc section. To see only this section, use show running-config vdc all command.

Connecting to the new VDC command line is also easy, just use switchto vdc tinyVdc command. The last point in this quick guide is to check if the interfaces were allocated to the tinyVdc with the show interface brief.

With Nexus platform, Cisco came with a neat way of having redundancy with portChannel across two physical Nexus switches and this way you can completely avoid spanning tree on major uplinks between layers access to distribution or distribution to core.

cisco nexus 9000v configuration guide

The best thing with this logical ether channels is that the Spanning tree has no chance to block any links. Core — Distribution — Access with classical Spanning Tree and blocked links. Now that we simple enabled vpc and configured a domain, we can check the status of the domain with show vpcbut we will not see anything because nothing is really configured yet.

To check Peer Link status, you can use vpc consistency-parameters global command. Right now we do not have our neighbor peer Nexus configured, so the output looks like this:.Please guide me to configure SSH on nexus I found out that it is different fro IOS, so appreciate the guidance.

Crypto key generate rsa modulus if that does not work try what listed in doc -ssh key rsa Test ssh access from management workstation make sure management workstation able to reach switch. Buy or Renew. Find A Community.

cisco nexus 9000v configuration guide

We're here for you! Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Search instead for. Did you mean:. Thushan Pramod. Nexus SSH Configuration. Labels: LAN Switching. Everyone's tags 1. Tags: Nexus Switching. I have this problem too. Rising star. You need to issue 'feature ssh' to enable this and rest is same as IOS.

Hi, Is it all required as mentioned in the guide? Will it use the username and passwords we configure in global config. Please confirm the below config. Then if we have the connectivity to the switch we can access via SSH and can use the credentials which we configure under global config right? Please do reply. Hi, I do not have to test but here is what I suggest basic steps Create local admin with password 2.

Crypto key generate rsa modulus if that does not work try what listed in doc -ssh key rsa Test ssh access from management workstation make sure management workstation able to reach switch. Latest Contents.The Cisco Nexus v is a virtual platform that is designed to simulate the control plane aspects of a network element running Cisco Nexus software. The Cisco Nexus v shares the same software image running on Cisco Nexus hardware platform although no specific hardware emulation is implemented.

The Cisco Nexus v for the Cisco Nexus Series provides a useful tool to enable the devops model and rapidly test changes to the infrastructure or to infrastructure automation tools. This enables customers to validate configuration changes on a simulated network prior to applying them on a production network. Some users have also expressed interest in using the simulation system for feature test ,verification, and automation tooling development and test simulation prior to deployment.

This virtual platform provides these virtualization benefits in a cloud environment and you are not limited to the type of hardware as well as other resources. This virtual platform provides these virtualization benefits in a cloud environment and users is not limited to hardware as well as other resources.

The resources used by Cisco Nexus v are managed by the hypervisor, and can be shared among VMs. The amount of hardware resources that VM sever allocates to a specific VM, can be reallocated to another VM on the server. You can easily move a VM from one server to another, Thus, you can move the Cisco Nexus v from a server in one physical location to a server in another physical location without moving any hardware resources.

Users can change network connectivity and configuration in a matter of mins without any physical cabling. The Cisco Nexus v features in this table have been verified to operate only with the Cisco devices mentioned in this document. If a networking or system feature is not identified as a supported feature in this document, it should be considered as unsupported despite that it may seem to work correctly.

Unsupported features did not have any level of regression testing on Cisco Nexus v. It maintains its own MAC Table. The consistency checker has a hardware dependency and hence is not supported on Cisco Nexus v.

Low data plane performance. Additional rate limiter is in place to limit the total amount of traffic received by Cisco Nexus v to 4M. Connectivity between the two ends of the interface link is simulated, hence it is important that you shut the interface in both the ends, followed by no shut at both the ends of the interface link.

Feature enablement in the Cisco Nexus v virtual platform is the same as Cisco Nexus hardware platform.Also See for Nexus Series Configuration manual - pages Troubleshooting manual - pages Quick start configuration manual - 6 pages.

Page of Go. Page 80 Page 81 - Configuring Accounting and Authenticatio Page - Enabling and Disabling Command Authoriza Page - Configuring Privilege Level Support for Page - Configuring the Timeout Interval for an Page Page - Configuration Example for X. Page - Configuration Examples for User Accounts Page - Additional References for User Accounts Page Page Page - Configuring Page - Controlling Page - Enabling Periodic Reauthentication for a Page Page - Disabling Page - Disabling the Page - Setting the Maximum Authenticator-to-Sup Page - Setting the Maximum Reauthentication Ret Page - Verifying the Page Page Page - Monitoring Page - Configuration Examples for Port Security Page - Configuring an Interface as Trusted or U Page - Configuring all Interfaces as Trusted or Page - Enabling or Disabling Option 82 for the Page - Enabling or Disabling Additional Validat Page - Verifying the Password Encryption Config Page - Guidelines and Limitations for Traffic S Page - Additional References for Traffic Storm Quick Links.

Download this manual See also: Troubleshooting ManualManual.This guide also provides an overview of the software lifecycle and examples of migration paths for common migration scenarios.

As such, it consists of individual software releases. Because different software release families can apply to different platforms or market segments, several trains can be current at any point in time. To expedite availability of new hardware support, a software release family may include a short-lived release train, which is a train that branches from a longer-term train. Starting with Release Table 1. Software selection depends on a number of factors, including hardware and software feature requirements, the status of applicable trains and releases in the software lifecycle, and outstanding caveats.

For guidance on selecting software that meets specific requirements, use the Cisco Feature Navigator or the Software Center on Cisco. Table 2. To verify support for a specific platform, see the release notes for the platform. Table 3. Table 4. Table 5. For detailed information about which Cisco NX-OS Software releases are recommended for new or existing deployments of a specific Cisco platform, see the following release notes:.

Instead, it is a single train that delivers both types of maintenance releases according to a specific release sequence. Figure 1. In this release model, a standard maintenance T release incorporates the latest features and hardware support, and it provides rebuilds for 18 months after the initial software release. An extended maintenance M release incorporates all the features and hardware support of all the preceding standard maintenance T releases in the train, but it is optimized for long-term maintenance because it provides rebuilds for 44 months after the initial software release.

Each rebuild integrates fixes for high-severity issues that exist in an individual release and should be addressed on an accelerated schedule. A rebuild typically includes fixes for a limited number of issues, which reduces the potential impact on customers who have already certified and deployed a release. Figure 2. It also provides rebuilds to integrate new features and bug fixes, including fixes for security vulnerabilities and issues. Each extended maintenance release provides rebuilds for 54 months after the initial software release.

If a subsequent rebuild is released less than 36 months after the initial software release, the rebuild integrates bug fixes only. Figure 3. In the preceding example Figure 3Release Cisco v irtual P ort C hannel vPC is a virtualization technology, launched inwhich allows links that are physically connected to two different Cisco Nexus Series devices to appear as a single port channel to a third endpoint.

The endpoint can be a switchserverrouter or any other device such as Firewall or Load Balancers that support the link aggregation technology EtherChannel. The diagram below clearly illustrates the differences in both logical and physical topology between a non-vPC deployment and a vPC deployment :.

Finally, a Quiz is included at the last section and we are waiting for your comments and answers! The Nexus, and series switches take port-channel functionality to the next level by enabling links connected to different devices to aggregate into a singlelogical link.

The peer switches run a control protocol that synchronizes the state of the port channel and maintains it. The following general guidelines and recommendations should be taken into account when deploying vPC technology at a Cisco Nexus Data Center :.

This is the adjacent device, which is connected via the vPC Peer-link. A vPC setup consists of two Nexus devices in a pair. The vPC peer-link is the most important connectivity element in the vPC setup. This link is used to synchronize the state between vPC peer devices via vPC control packets which creates the illusion of a single control plane.

Configuration Guides

In addition the vPC peer-link provides the necessary transport for multicastbroadcastunknown unicast traffic and for the traffic of orphaned ports. The Peer Keepalive Link provides a Layer 3 communications path that is used as a secondary test in order to determine whether the remote peer is operating properly.

In particular, it helps the vPC switch to determine whether the peer link itself has failed or whether the vPC peer is down. The default timers are an interval of 1 second with a timeout of 5 seconds. This is the common domain configured across two vPC peer devices and this value identifies the vPC. A vPC domain id per device is permitted. This is the interface that is a member of one of the vPCs configured on the vPC peers.

This protocol is used for stateful synchronization and configuration. It utilizes the peer link and does not require any configuration by the administrators. The Cisco Fabric Services over Ethernet protocol is used to perform compatibility checks in order to validate the compatibility of vPC member ports to form the channel, to synchronize the IGMP snooping status, to monitor the status of the vPC member ports, and to synchronize the Address Resolution Protocol ARP table.

V irtual S witching S ystem VSS is a virtualization technology that pools multiple Cisco Catalyst Switches into one virtual switchincreasing operational efficiency, boosting nonstop communications, and scaling system bandwidth capacity. Both technologies are similar from the perspective of the downstream switch but there are differences, mainly in that the control plane works on the upstream devices. Multi-Chassis Port Channel. Loop Free Topology.

Spanning Tree as failsafe protocol. Maximum physical Nodes. Control Plane. Single logical node. Two independents active nodes.

Cisco Nexus 9000 Series Configuration Manual

Layer 3 port channel. Common configuration. Two different configurations. Static, LACP. Table 1. Catalyst Switches may need a supervisor engine upgrade to form a VSS. STP is still in operation but is running only as a failsafe mechanism.