NSX Edge – Troubleshooting via CLI

So let us continue down the path of the various commands to help troubleshooting.  We have been down the path of the VXLAN via esxcli, NSX Controller and Logical Switching, the NSX Controller and Logical Routing/Bridging, and using net-vdr.  Now we can move into troubleshooting from the NSX Edge device.

What is a NSX Edge?

NSX Edge provides network edge security and gateway services to isolate your virtualized networks. You can install an NSX Edge either as a logical (distributed) router or as a services gateway.  The NSX Edge logical (distributed) router provides East-West distributed routing with tenant IP address space and data path isolation. Virtual machines or workloads that reside on the same host on different subnets can communicate with one another without having to traverse a traditional routing interface.  The NSX Edge gateway connects isolated, stub networks to shared (uplink) networks by providing common gateway services such as DHCP, VPN, NAT, dynamic routing, and Load Balancing. Common deployments of NSX Edge include in the DMZ, VPN Extranets, and multi-tenant Cloud environments where the NSX Edge creates virtual boundaries for each tenant.

Without further ado, shall we? Read More…

NSX Controller Troubleshooting – Logical Routing and Bridging

As you continue through your journey with NSX you will eventually want to or be forced to (by requirement) to utilize the logical routing and bridging functionality.  To aid you in your troubleshooting I will continue to throw some commands at you that will aid in your troubleshooting.  So before we start, let’s recap where we have gone before this.

Our first journey took us down the path of troubleshooting VXLAN, specifically, from the ESXi host.  We did this by utilizing esxcli to gather some information.  We were able to gather the following:

  • List VXLANS
  • Show the VXLAN Network List
  • Show the VXLAN MAC Address Table
  • Show the VXLAN ARP Table
  • Show the VXLAN Network Status

After that we dove into troubleshooting NSX Controller Logical Switching.  This post took us into the NSX Controller to gather information.  We were able to gather the following:

  • Controller connectivity
  • View the netcpa log to aid in determining connectivity issues
  • Get the Controller status
  • Get the active roles held by the Controller
  • View which Controller was responsible for a particular VNI
  • Take a look at VTEP, MAC, and ARP Table entries

Now that we have gone back in time, let’s jump back into the present and take a look at Logical Routing and Bridging troubleshooting commands…POOF!

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NSX Controller Troubleshooting – Logical Switching

So to add to my last post on troubleshooting VXLAN through esxcli, I will now move into troubleshooting and gathering information from the NSX Controller instances.  In this post I will show you some commands that are extremely useful from the NSX Controller when trying to troubleshoot logical switching in NSX.  Again, a lot of this was shown to me by @trainingrev during NSX training but wanted to document and share…

Ready…set…GO! Read More…

VXLAN Troubleshooting – esxcli commands

So with the release of VMware’s NSX™ product, some of us may have already started down that road of playing with it in our labs.  VMware NSX™ is the network virtualization and security platform positioned as a key part of the Software-Defined Data Center (SDDC).  You can check out more on NSX™ on VMware’s site here: http://www.vmware.com/products/nsx/

After sitting through a great class on NSX taught by @trainingrev in Austin, TX, I have decided to share some of the awesome information I came across about some esxcli commands that can be used to troubleshoot VXLAN from your ESXi hosts.  For those of you who don’t know what VXLAN is or what it can do, here is a quick and short description is used to address the need for overlay networks within virtualized data centers accommodating multiple tenants.  The scheme and the related protocols can be used in cloud service provider and enterprise data center networks.

For more information on VXLAN, you can look at the actual IETF submittal (http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-09) or check out this whitepaper from Cisco.

So let’s begin, shall we? Read More…

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