Enable CDP on vSwitch on all hosts

[kcvman]

I have a somewhat cumbersome way to run vimsh and esxcfg-x scripts on each ESX host via powercli using and .csv file and plink.exe (see code). I want to be able to enable CDP on all the virtual switches across all my hosts, and not have to run a seperate one-liner for every switch. I'm sure there is an easier way and thought I would ask all the experts!

Thanks.

import-csv c:\temp\test.csv | %{plink -l root
root@($_.Server) -pw $_.Password esxcfg-vswitch -B both vSwitch0}

[Alan Renouf]

Ive had a quick look through the API reference and could see no way of enabling this, there is information in the reference to view the properties of CDP once it is enabled, I used it a while back on this script: http://www.virtu-al.net/2008/12/12/detailed-vmware-host-network-information/

Looks like your method is the only way that I can see at the moment, Luc (who sleeps with the API reference as a pillow) may find something that I can not.

I have used a 3rd party tool to make ssh connections before so it is more natural to powershell other than plink, prehaps I will adapt this method to create a invoke-vmhostScript function !

If you found this information useful, please consider awarding points for Correct or Helpful.

Alan Renouf

http://virtu-al.net

[LucD]

Alan is correct, there is currently no API to do the same as the "esxcfg-vswitch -B both..." command is doing.

____________

Blog: LucD notes

Twitter: lucd22

[aenagy]

I tried the procedure in the link below for ESXi 4.0.0 U1 using vMA 4.0 and it worked. Our network admin was able to see CDP info on our 6509 switches for both access and trunk ports.

vicfg-vswitch --server <vcenter.domain.com> -h <esxi.domain.com> -B both <vSwitch0>

Next-Gen Stuff: Enabling CDP in ESX/ESXi

This would suggest that there is someting in the Perl API to enable CDP.

[William Lam]

@aenagy

That's correct, Enabling CDP is available through the vSphere API UpdateVirtualSwitch method and specifying the LinkDiscoveryProtocolConfig in the spec and using protocol => cdp. You may notice that the enum type allows for both "cdp" and "lldp", the latter is something that isn't actually fully implemented on a standard vSwitch, would have been nice to have. LLDP afaik is only supported on vDS

Though this functionality is not available in canned VMware Powershell cmdlet, one could craft a custom cmdlet to enable CDP without having to resort to plink hack. This is where it pays off to know a bit about the APIs :smileyhappy: and where VMware hasn't provided a cmdlet for every single operation within a vSphere environment and this isn't the only cmdlet that is lacking either

[argiesen]

Has anyone happen to have built a PowerCLI script to do this that they would be willing to share? It would be much appreciated.

[maishsk]

I know this is an old thread - but I did find a solution to this, using Get-Esxcli

How to Set CDP on a vSwitch–the #PowerCLI Way

Maish

VMTN Moderator | vExpert

Author of VMware vSphere Design

@maishsk | My Blog

[LucD]

Nice one Maish, waiting for the function now :smileywink:

[maishsk]

Here you go Luc :smileyhappy:

function Set-VirtualSwitchCDP {
     <#
          .SYNOPSIS
               Set the CDP setting on a Standard Virtual Switch.
          .DESCRIPTION
               Using the Get-Esxcli cmdlet you can changed the CDP Settings 
               on virtual switch on an ESX host.
          .NOTES Author: Maish Saidel-Keesing
          .PARAMETER  VMHost
               ESX server to perform the function.
          .PARAMETER  MTU
               The MTU settings of the vSwitch, default is 1500.Valid values are 
               between 1500-9000
          .PARAMETER  CDP
               The CDP setting for the vSwitch. 
               Valid values are 'down', 'listen', 'advertise' or 'both'.
          .PARAMETER  vSwitch
               The Name of the Standard vSwitch on which to perform the action.
          .EXAMPLE
               PS C:\> Set-VirtualSwitchCDP -VMhost esx1 -MTU 1500 -CDP both -vSwitch vSwitch0
          .EXAMPLE
               PS C:\> Get-VMhost Myhost | Set-VirtualSwitchCDP -vSwitch vSwitch0
          .LINK
               http://technodrone.blogspot.com/2012/02/how-to-set-cdp-on-vswitchthe-powercli.html
     #>     
     [CmdletBinding(SupportsShouldProcess=$true,ConfirmImpact='High')]
    Param(
    [Parameter(Position=0,Mandatory=$True,ValueFromPipeline=$True)]
    [String]
    $VMHost,
 
    [Parameter(Position=1)]
     [ValidateRange(1500,9000)]
    [Int]
    $MTU = 1500,
     
     [Parameter(Position=2)]
     [ValidateSet("down","listen","advertise","both")]
    [String]
    $CDP = "both",
     
     [Parameter(Position=3,Mandatory=$True)]
    [String]
    $vSwitch
     )
     
    Process
     {
         if ($pscmdlet.ShouldProcess($VMHOST,"Updating $vSwitch with MTU $MTU and CDP setting of $CDP"))     {
               foreach ($hostobject in (Get-VMHost $VMHost)) {
                    $esxcli = Get-EsxCli -VMHost $hostobject
                    $esxcli.network.vswitch.standard.set($CDP,$MTU,$vswitch)
                    $esxcli.network.vswitch.standard.list()
               }
          }
     }
}

Maish

VMware Communities Moderator

My Blog - @maishsk

Co-Author of VMware vSphere Design

[LucD]

Nice one Maish

[kcvman]

Thank you gentlemen.