Public/Invoke-SnmpWalk.ps1
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function Invoke-SnmpWalk { Param ( #The IP or hostname of the target device. Defaults to "localhost" if not specified [string]$ComputerName = "localhost", #SNMP community string to use to query the target device. Defaults to "public" if not specified [string]$Community = "public", #SNMP OID(s) to query on the target device. For Invoke-SnmpGet, this can be a single OID (string value) or an array of OIDs (string values) [Parameter(Mandatory=$True)] [string[]]$ObjectIdentifier, #UDP Port to use to perform SNMP queries. [Parameter(Mandatory=$False)] [int]$UDPport = 161, #Time to wait before expiring SNMP call handles. [Parameter(Mandatory=$False)] [int]$Timeout = 3000 ) # $sOIDstart # $TimeOut is in msec, 0 or -1 for infinite # Create OID object $oid = New-Object Lextm.SharpSnmpLib.ObjectIdentifier ($ObjectIdentifier) # Create OID variable list if ($Host.Version.Major -le 2) { # PowerShell v1 and v2 $vList = New-GenericObject System.Collections.Generic.List Lextm.SharpSnmpLib.Variable } elseif ($Host.Version.Major -gt 2) { # PowerShell v3+ $vList = New-Object 'System.Collections.Generic.List[Lextm.SharpSnmpLib.Variable]' } #Validate the ComputerName $IPAddress = try {[System.Net.Dns]::GetHostAddresses($ComputerName)[0]} catch {throw} # Create endpoint for SNMP server $svr = New-Object System.Net.IpEndPoint ($IPAddress, $UDPport) # Use SNMP v2 and walk mode WithinSubTree (as opposed to Default) $ver = [Lextm.SharpSnmpLib.VersionCode]::V2 $walkMode = [Lextm.SharpSnmpLib.Messaging.WalkMode]::WithinSubtree # Perform SNMP Get try { [Lextm.SharpSnmpLib.Messaging.Messenger]::Walk($ver, $svr, $Community, $oid, $vList, $TimeOut, $walkMode) | Out-Null } catch [Lextm.SharpSnmpLib.Messaging.TimeoutException] { write-error "SNMP Get on $ComputerName timed-out" Return $null } catch { write-error "SNMP Walk error: $_" Return $null } $res = @() foreach ($var in $vList) { $line = "" | Select OID, Data $line.OID = $var.Id.ToString() $line.Data = $var.Data.ToString() $res += $line } $res } |