helpers/snmp/WhatsUpGoldPS.Snmp/Public/Get-SNMPTableSharp.ps1

function Get-SNMPTableSharp {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory)]
        [string]$Target,

        [Parameter(Mandatory)]
        [string]$BaseOid,

        [string]$Community = 'public',

        [ValidateSet('V1', 'V2')]
        [string]$SnmpVersion = 'V2',

        [int]$Port = 161,
        [int]$Timeout = 5000,
        [int]$MaxRepetitions = 10,

        [switch]$UseWalk
    )

    if (-not ('Lextm.SharpSnmpLib.Variable' -as [type])) {
        throw 'SharpSnmpLib is not loaded. Run Import-SharpSnmpLib first.'
    }

    $ip = [System.Net.IPAddress]::Parse($Target)
    $endpoint = [System.Net.IPEndPoint]::new($ip, $Port)
    $communityObj = [Lextm.SharpSnmpLib.OctetString]::new($Community)
    $rootOid = [Lextm.SharpSnmpLib.ObjectIdentifier]::new($BaseOid)

    $results = [System.Collections.Generic.List[Lextm.SharpSnmpLib.Variable]]::new()

    $versionCode =
        switch ($SnmpVersion) {
            'V1' { [Lextm.SharpSnmpLib.VersionCode]::V1 }
            'V2' { [Lextm.SharpSnmpLib.VersionCode]::V2 }
        }

    if ($UseWalk -or $SnmpVersion -eq 'V1') {
        # SNMPv1 does not support BulkWalk; also available as explicit opt-in
        [Lextm.SharpSnmpLib.Messaging.Messenger]::Walk(
            $versionCode,
            $endpoint,
            $communityObj,
            $rootOid,
            $results,
            $Timeout,
            [Lextm.SharpSnmpLib.Messaging.WalkMode]::WithinSubtree
        )
    } else {
        # BulkWalk is faster and less chatty -- preferred for V2c
        [Lextm.SharpSnmpLib.Messaging.Messenger]::BulkWalk(
            $versionCode,
            $endpoint,
            $communityObj,
            ([Lextm.SharpSnmpLib.OctetString]::new('')),
            $rootOid,
            $results,
            $Timeout,
            $MaxRepetitions,
            [Lextm.SharpSnmpLib.Messaging.WalkMode]::WithinSubtree,
            $null,
            $null
        )
    }

    foreach ($item in $results) {
        $value = $item.Data.ToString()
        if ($item.Data.TypeCode.ToString() -eq 'OctetString' -and ($value -match '[^\x20-\x7E]' -or $value.Contains('?'))) {
            $value = $item.Data.ToHexString()
        }
        [PSCustomObject]@{
            OID   = $item.Id.ToString()
            Type  = $item.Data.TypeCode.ToString()
            Value = $value
        }
    }
}

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