commands = {
    "cisco_ios": 
    [
        "show version",
        "show vlans",
        "show ip interface brief"
    ],
    "cisco_nxos": 
    [
        "show version"
    ],
    "cisco_xr": 
    [
        "show version",
        "show interface brief"
    ],
    "extreme_exos": 
    [   
        "show vlan",
        "show cdp neighbor",
        "show stpd detail",
        "show lldp neighbor detail",
        "show iparp",
        "show edp ports all",
        "show vrrp"
    ]
}