diff --git a/hyperglass/configuration/models/commands.py b/hyperglass/configuration/models/commands.py
index c900085..36953cc 100644
--- a/hyperglass/configuration/models/commands.py
+++ b/hyperglass/configuration/models/commands.py
@@ -13,38 +13,89 @@ class Command(HyperglassModel):
     class IPv4(HyperglassModel):
         """Validation model for non-default dual afi commands."""
 
-        bgp_route: StrictStr = ""
-        bgp_aspath: StrictStr = ""
-        bgp_community: StrictStr = ""
-        ping: StrictStr = ""
-        traceroute: StrictStr = ""
+        bgp_route: StrictStr
+        bgp_aspath: StrictStr
+        bgp_community: StrictStr
+        ping: StrictStr
+        traceroute: StrictStr
 
     class IPv6(HyperglassModel):
         """Validation model for non-default ipv4 commands."""
 
-        bgp_route: StrictStr = ""
-        bgp_aspath: StrictStr = ""
-        bgp_community: StrictStr = ""
-        ping: StrictStr = ""
-        traceroute: StrictStr = ""
+        bgp_route: StrictStr
+        bgp_aspath: StrictStr
+        bgp_community: StrictStr
+        ping: StrictStr
+        traceroute: StrictStr
 
     class VPNIPv4(HyperglassModel):
         """Validation model for non-default ipv6 commands."""
 
-        bgp_route: StrictStr = ""
-        bgp_aspath: StrictStr = ""
-        bgp_community: StrictStr = ""
-        ping: StrictStr = ""
-        traceroute: StrictStr = ""
+        bgp_route: StrictStr
+        bgp_aspath: StrictStr
+        bgp_community: StrictStr
+        ping: StrictStr
+        traceroute: StrictStr
 
     class VPNIPv6(HyperglassModel):
         """Validation model for non-default ipv6 commands."""
 
-        bgp_route: StrictStr = ""
-        bgp_aspath: StrictStr = ""
-        bgp_community: StrictStr = ""
-        ping: StrictStr = ""
-        traceroute: StrictStr = ""
+        bgp_route: StrictStr
+        bgp_aspath: StrictStr
+        bgp_community: StrictStr
+        ping: StrictStr
+        traceroute: StrictStr
+
+    ipv4_default: IPv4
+    ipv6_default: IPv6
+    ipv4_vpn: VPNIPv4
+    ipv6_vpn: VPNIPv6
+
+
+class CiscoIOS(Command):
+    """Validation model for default cisco_ios commands."""
+
+    class VPNIPv4(Command.VPNIPv4):
+        """Default commands for dual afi commands."""
+
+        bgp_community: StrictStr = "show bgp vpnv4 unicast vrf {vrf} community {target}"
+        bgp_aspath: StrictStr = 'show bgp vpnv4 unicast vrf {vrf} quote-regexp "{target}"'
+        bgp_route: StrictStr = "show bgp vpnv4 unicast vrf {vrf} {target}"
+        ping: StrictStr = "ping vrf {vrf} {target} repeat 5 source {source}"
+        traceroute: StrictStr = (
+            "traceroute vrf {vrf} {target} timeout 1 probe 2 source {source}"
+        )
+
+    class VPNIPv6(Command.VPNIPv6):
+        """Default commands for dual afi commands."""
+
+        bgp_community: StrictStr = "show bgp vpnv6 unicast vrf {vrf} community {target}"
+        bgp_aspath: StrictStr = 'show bgp vpnv6 unicast vrf {vrf} quote-regexp "{target}"'
+        bgp_route: StrictStr = "show bgp vpnv6 unicast vrf {vrf} {target}"
+        ping: StrictStr = "ping vrf {vrf} {target} repeat 5 source {source}"
+        traceroute: StrictStr = (
+            "traceroute vrf {vrf} {target} timeout 1 probe 2 source {source}"
+        )
+
+    class IPv4(Command.IPv4):
+        """Default commands for ipv4 commands."""
+
+        bgp_community: StrictStr = "show bgp ipv4 unicast community {target}"
+        bgp_aspath: StrictStr = 'show bgp ipv4 unicast quote-regexp "{target}"'
+        bgp_route: StrictStr = "show bgp ipv4 unicast {target} | exclude pathid:|Epoch"
+        ping: StrictStr = "ping {target} repeat 5 source {source}"
+        traceroute: StrictStr = "traceroute {target} timeout 1 probe 2 source {source}"
+
+    class IPv6(Command.IPv6):
+        """Default commands for ipv6 commands."""
+
+        bgp_community: StrictStr = "show bgp ipv6 unicast community {target}"
+        bgp_aspath: StrictStr = 'show bgp ipv6 unicast quote-regexp "{target}"'
+        bgp_route: StrictStr = "show bgp ipv6 unicast {target} | exclude pathid:|Epoch"
+        ping: StrictStr = ("ping ipv6 {target} repeat 5 source {source}")
+        traceroute: StrictStr = (
+            "traceroute ipv6 {target} timeout 1 probe 2 source {source}"
+        )
 
     ipv4_default: IPv4 = IPv4()
     ipv6_default: IPv6 = IPv6()
@@ -52,9 +103,204 @@ class Command(HyperglassModel):
     ipv6_vpn: VPNIPv6 = VPNIPv6()
 
 
+class CiscoXR(Command):
+    """Validation model for default cisco_xr commands."""
+
+    class IPv4(Command.IPv4):
+        """Validation model for non-default dual afi commands."""
+
+        bgp_route: StrictStr = r"show bgp ipv4 unicast {target} | util egrep \\(BGP routing table entry|Path \\#|aggregated by|Origin |Community:|validity| from \\)"
+        bgp_aspath: StrictStr = r"show bgp ipv4 unicast regexp {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
+        bgp_community: StrictStr = r"show bgp ipv4 unicast community {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
+        ping: StrictStr = r"ping ipv4 {target} count 5 source {source}"
+        traceroute: StrictStr = r"traceroute ipv4 {target} timeout 1 probe 2 source {source}"
+
+    class IPv6(Command.IPv6):
+        """Validation model for non-default ipv4 commands."""
+
+        bgp_route: StrictStr = r"show bgp ipv6 unicast {target} | util egrep \\(BGP routing table entry|Path \\#|aggregated by|Origin |Community:|validity| from \\)"
+        bgp_aspath: StrictStr = r"show bgp ipv6 unicast regexp {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
+        bgp_community: StrictStr = r"show bgp ipv6 unicast community {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
+        ping: StrictStr = r"ping ipv6 {target} count 5 source {source}"
+        traceroute: StrictStr = r"traceroute ipv6 {target} timeout 1 probe 2 source {source}"
+
+    class VPNIPv4(Command.VPNIPv4):
+        """Validation model for non-default ipv6 commands."""
+
+        bgp_route: StrictStr = r"show bgp vpnv4 unicast vrf {vrf} {target} | util egrep \\(BGP routing table entry|Path \\#|aggregated by|Origin |Community:|validity| from \\)"
+        bgp_aspath: StrictStr = r"show bgp vpnv4 unicast vrf {vrf} regexp {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
+        bgp_community: StrictStr = r"show bgp vpnv4 unicast vrf {vrf} community {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
+        ping: StrictStr = r"ping vrf {vrf} {target} count 5 source {source}"
+        traceroute: StrictStr = r"traceroute vrf {vrf} {target} timeout 1 probe 2 source {source}"
+
+    class VPNIPv6(Command.VPNIPv6):
+        """Validation model for non-default ipv6 commands."""
+
+        bgp_route: StrictStr = r"show bgp vpnv6 unicast vrf {vrf} {target} | util egrep \\(BGP routing table entry|Path \\#|aggregated by|Origin |Community:|validity| from \\)"
+        bgp_aspath: StrictStr = r"show bgp vpnv6 unicast vrf {vrf} regexp {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
+        bgp_community: StrictStr = r"show bgp vpnv6 unicast vrf {vrf} community {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
+        ping: StrictStr = r"ping vrf {vrf} {target} count 5 source {source}"
+        traceroute: StrictStr = r"traceroute vrf {vrf} {target} timeout 1 probe 2 source {source}"
+
+    ipv4_default: IPv4 = IPv4()
+    ipv6_default: IPv6 = IPv6()
+    ipv4_vpn: VPNIPv4 = VPNIPv4()
+    ipv6_vpn: VPNIPv6 = VPNIPv6()
+
+
+class Juniper(Command):
+    """Validation model for default juniper commands."""
+
+    class IPv4(Command.IPv4):
+        """Validation model for non-default dual afi commands."""
+
+        bgp_route: StrictStr = "show route protocol bgp table inet.0 {target} detail"
+        bgp_aspath: StrictStr = 'show route protocol bgp table inet.0 aspath-regex "{target}"'
+        bgp_community: StrictStr = "show route protocol bgp table inet.0 community {target}"
+        ping: StrictStr = "ping inet {target} count 5 source {source}"
+        traceroute: StrictStr = "traceroute inet {target} wait 1 source {source}"
+
+    class IPv6(Command.IPv6):
+        """Validation model for non-default ipv4 commands."""
+
+        bgp_route: StrictStr = "show route protocol bgp table inet6.0 {target} detail"
+        bgp_aspath: StrictStr = 'show route protocol bgp table inet6.0 aspath-regex "{target}"'
+        bgp_community: StrictStr = "show route protocol bgp table inet6.0 community {target}"
+        ping: StrictStr = "ping inet6 {target} count 5 source {source}"
+        traceroute: StrictStr = "traceroute inet6 {target} wait 1 source {source}"
+
+    class VPNIPv4(Command.VPNIPv4):
+        """Validation model for non-default ipv6 commands."""
+
+        bgp_route: StrictStr = "show route protocol bgp table {vrf}.inet.0 {target} detail"
+        bgp_aspath: StrictStr = 'show route protocol bgp table {vrf}.inet.0 aspath-regex "{target}"'
+        bgp_community: StrictStr = "show route protocol bgp table {vrf}.inet.0 community {target}"
+        ping: StrictStr = "ping inet routing-instance {vrf} {target} count 5 source {source}"
+        traceroute: StrictStr = "traceroute inet routing-instance {vrf} {target} wait 1 source {source}"
+
+    class VPNIPv6(Command.VPNIPv6):
+        """Validation model for non-default ipv6 commands."""
+
+        bgp_route: StrictStr = "show route protocol bgp table {vrf}.inet6.0 {target} detail"
+        bgp_aspath: StrictStr = 'show route protocol bgp table {vrf}.inet6.0 aspath-regex "{target}"'
+        bgp_community: StrictStr = "show route protocol bgp table {vrf}.inet6.0 community {target}"
+        ping: StrictStr = "ping inet6 routing-instance {vrf} {target} count 5 source {source}"
+        traceroute: StrictStr = "traceroute inet6 routing-instance {vrf} {target} wait 1 source {source}"
+
+    ipv4_default: IPv4 = IPv4()
+    ipv6_default: IPv6 = IPv6()
+    ipv4_vpn: VPNIPv4 = VPNIPv4()
+    ipv6_vpn: VPNIPv6 = VPNIPv6()
+
+
+class Huawei(Command):
+    """Validation model for default huawei commands."""
+
+    class IPv4(Command.IPv4):
+        """Default commands for ipv4 commands."""
+
+        bgp_community: StrictStr = "display bgp routing-table regular-expression {target}"
+        bgp_aspath: StrictStr = "display bgp routing-table regular-expression {target}"
+        bgp_route: StrictStr = "display bgp routing-table {target}"
+        ping: StrictStr = "ping -c 5 -a {source} {target}"
+        traceroute: StrictStr = "tracert -q 2 -f 1 -a {source} {target}"
+
+    class IPv6(Command.IPv6):
+        """Default commands for ipv6 commands."""
+
+        bgp_community: StrictStr = "display bgp ipv6 routing-table community {target}"
+        bgp_aspath: StrictStr = "display bgp ipv6 routing-table regular-expression {target}"
+        bgp_route: StrictStr = "display bgp ipv6 routing-table {target}"
+        ping: StrictStr = "ping ipv6 -c 5 -a {source} {target}"
+        traceroute: StrictStr = "tracert ipv6 -q 2 -f 1 -a {source} {target}"
+
+    class VPNIPv4(Command.VPNIPv4):
+        """Default commands for dual afi commands."""
+
+        bgp_community: StrictStr = "display bgp vpnv4 vpn-instance {vrf} routing-table regular-expression {target}"
+        bgp_aspath: StrictStr = "display bgp vpnv4 vpn-instance {vrf} routing-table regular-expression {target}"
+        bgp_route: StrictStr = "display bgp vpnv4 vpn-instance {vrf} routing-table {target}"
+        ping: StrictStr = "ping -vpn-instance {vrf} -c 5 -a {source} {target}"
+        traceroute: StrictStr = "tracert -q 2 -f 1 -vpn-instance {vrf} -a {source} {target}"
+
+    class VPNIPv6(Command.VPNIPv6):
+        """Default commands for dual afi commands."""
+
+        bgp_community: StrictStr = "display bgp vpnv6 vpn-instance {vrf} routing-table regular-expression {target}"
+        bgp_aspath: StrictStr = "display bgp vpnv6 vpn-instance {vrf} routing-table regular-expression {target}"
+        bgp_route: StrictStr = "display bgp vpnv6 vpn-instance {vrf} routing-table {target}"
+        ping: StrictStr = "ping vpnv6 vpn-instance {vrf} -c 5 -a {source} {target}"
+        traceroute: StrictStr = "tracert -q 2 -f 1 vpn-instance {vrf} -a {source} {target}"
+
+    ipv4_default: IPv4 = IPv4()
+    ipv6_default: IPv6 = IPv6()
+    ipv4_vpn: VPNIPv4 = VPNIPv4()
+    ipv6_vpn: VPNIPv6 = VPNIPv6()
+
+
+class Arista(Command):
+    """Validation model for non-default commands."""
+
+    class IPv4(Command.IPv4):
+        """Validation model for non-default dual afi commands."""
+
+        bgp_route: StrictStr = "show ip bgp {target}"
+        bgp_aspath: StrictStr = "show ip bgp regexp {target}"
+        bgp_community: StrictStr = "show ip bgp community {target}"
+        ping: StrictStr = "ping ip {target} source {source}"
+        traceroute: StrictStr = "traceroute ip {target} source {source}"
+
+    class IPv6(Command.IPv6):
+        """Validation model for non-default ipv4 commands."""
+
+        bgp_route: StrictStr = "show ipv6 bgp {target}"
+        bgp_aspath: StrictStr = "show ipv6 bgp regexp {target}"
+        bgp_community: StrictStr = "show ipv6 bgp community {target}"
+        ping: StrictStr = "ping ipv6 {target} source {source}"
+        traceroute: StrictStr = "traceroute ipv6 {target} source {source}"
+
+    class VPNIPv4(Command.VPNIPv4):
+        """Validation model for non-default ipv6 commands."""
+
+        bgp_route: StrictStr = "show ip bgp {target} vrf {vrf}"
+        bgp_aspath: StrictStr = "show ip bgp regexp {target} vrf {vrf}"
+        bgp_community: StrictStr = "show ip bgp community {target} vrf {vrf}"
+        ping: StrictStr = "ping vrf {vrf} ip {target} source {source}"
+        traceroute: StrictStr = "traceroute vrf {vrf} ip {target} source {source}"
+
+    class VPNIPv6(Command.VPNIPv6):
+        """Validation model for non-default ipv6 commands."""
+
+        bgp_route: StrictStr = "show ipv6 bgp {target} vrf {vrf}"
+        bgp_aspath: StrictStr = "show ipv6 bgp regexp {target} vrf {vrf}"
+        bgp_community: StrictStr = "show ipv6 bgp community {target} vrf {vrf}"
+        ping: StrictStr = "ping vrf {vrf} ipv6 {target} source {source}"
+        traceroute: StrictStr = "traceroute vrf {vrf} ipv6 {target} source {source}"
+
+    ipv4_default: IPv4 = IPv4()
+    ipv6_default: IPv6 = IPv6()
+    ipv4_vpn: VPNIPv4 = VPNIPv4()
+    ipv6_vpn: VPNIPv6 = VPNIPv6()
+
+
+_NOS_MAP = {
+    "juniper": Juniper,
+    "cisco_ios": CiscoIOS,
+    "cisco_xr": CiscoXR,
+    "huawei": Huawei,
+    "arista": Arista,
+}
+
+
 class Commands(HyperglassModel):
     """Base class for command definitions."""
 
+    cisco_ios: Command = CiscoIOS()
+    cisco_xr: Command = CiscoXR()
+    juniper: Command = Juniper()
+    huawei: Command = Huawei()
+    arista: Command = Arista()
+
     @classmethod
     def import_params(cls, input_params):
         """Import loaded YAML, initialize per-command definitions.
@@ -68,242 +314,12 @@ class Commands(HyperglassModel):
             {object} -- Validated commands object
         """
         obj = Commands()
-        for (nos, cmds) in input_params.items():
-            setattr(obj, nos, Command(**cmds))
+        for nos, cmds in input_params.items():
+            nos_cmd_set = _NOS_MAP.get(nos)
+            nos_cmds = nos_cmd_set(**cmds)
+            setattr(obj, nos, nos_cmds)
         return obj
 
-    class CiscoIOS(Command):
-        """Validation model for default cisco_ios commands."""
-
-        class VPNIPv4(Command.VPNIPv4):
-            """Default commands for dual afi commands."""
-
-            bgp_community: StrictStr = "show bgp vpnv4 unicast vrf {vrf} community {target}"
-            bgp_aspath: StrictStr = 'show bgp vpnv4 unicast vrf {vrf} quote-regexp "{target}"'
-            bgp_route: StrictStr = "show bgp vpnv4 unicast vrf {vrf} {target}"
-            ping: StrictStr = "ping vrf {vrf} {target} repeat 5 source {source}"
-            traceroute: StrictStr = (
-                "traceroute vrf {vrf} {target} timeout 1 probe 2 source {source}"
-            )
-
-        class VPNIPv6(Command.VPNIPv6):
-            """Default commands for dual afi commands."""
-
-            bgp_community: StrictStr = "show bgp vpnv6 unicast vrf {vrf} community {target}"
-            bgp_aspath: StrictStr = 'show bgp vpnv6 unicast vrf {vrf} quote-regexp "{target}"'
-            bgp_route: StrictStr = "show bgp vpnv6 unicast vrf {vrf} {target}"
-            ping: StrictStr = "ping vrf {vrf} {target} repeat 5 source {source}"
-            traceroute: StrictStr = (
-                "traceroute vrf {vrf} {target} timeout 1 probe 2 source {source}"
-            )
-
-        class IPv4(Command.IPv4):
-            """Default commands for ipv4 commands."""
-
-            bgp_community: StrictStr = "show bgp ipv4 unicast community {target}"
-            bgp_aspath: StrictStr = 'show bgp ipv4 unicast quote-regexp "{target}"'
-            bgp_route: StrictStr = "show bgp ipv4 unicast {target} | exclude pathid:|Epoch"
-            ping: StrictStr = "ping {target} repeat 5 source {source}"
-            traceroute: StrictStr = "traceroute {target} timeout 1 probe 2 source {source}"
-
-        class IPv6(Command.IPv6):
-            """Default commands for ipv6 commands."""
-
-            bgp_community: StrictStr = "show bgp ipv6 unicast community {target}"
-            bgp_aspath: StrictStr = 'show bgp ipv6 unicast quote-regexp "{target}"'
-            bgp_route: StrictStr = "show bgp ipv6 unicast {target} | exclude pathid:|Epoch"
-            ping: StrictStr = ("ping ipv6 {target} repeat 5 source {source}")
-            traceroute: StrictStr = (
-                "traceroute ipv6 {target} timeout 1 probe 2 source {source}"
-            )
-
-        ipv4_default: IPv4 = IPv4()
-        ipv6_default: IPv6 = IPv6()
-        ipv4_vpn: VPNIPv4 = VPNIPv4()
-        ipv6_vpn: VPNIPv6 = VPNIPv6()
-
-    class CiscoXR(Command):
-        """Validation model for default cisco_xr commands."""
-
-        class IPv4(Command.IPv4):
-            """Validation model for non-default dual afi commands."""
-
-            bgp_route: StrictStr = r"show bgp ipv4 unicast {target} | util egrep \\(BGP routing table entry|Path \\#|aggregated by|Origin |Community:|validity| from \\)"
-            bgp_aspath: StrictStr = r"show bgp ipv4 unicast regexp {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
-            bgp_community: StrictStr = r"show bgp ipv4 unicast community {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
-            ping: StrictStr = r"ping ipv4 {target} count 5 source {source}"
-            traceroute: StrictStr = r"traceroute ipv4 {target} timeout 1 probe 2 source {source}"
-
-        class IPv6(Command.IPv6):
-            """Validation model for non-default ipv4 commands."""
-
-            bgp_route: StrictStr = r"show bgp ipv6 unicast {target} | util egrep \\(BGP routing table entry|Path \\#|aggregated by|Origin |Community:|validity| from \\)"
-            bgp_aspath: StrictStr = r"show bgp ipv6 unicast regexp {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
-            bgp_community: StrictStr = r"show bgp ipv6 unicast community {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
-            ping: StrictStr = r"ping ipv6 {target} count 5 source {source}"
-            traceroute: StrictStr = r"traceroute ipv6 {target} timeout 1 probe 2 source {source}"
-
-        class VPNIPv4(Command.VPNIPv4):
-            """Validation model for non-default ipv6 commands."""
-
-            bgp_route: StrictStr = r"show bgp vpnv4 unicast vrf {vrf} {target} | util egrep \\(BGP routing table entry|Path \\#|aggregated by|Origin |Community:|validity| from \\)"
-            bgp_aspath: StrictStr = r"show bgp vpnv4 unicast vrf {vrf} regexp {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
-            bgp_community: StrictStr = r"show bgp vpnv4 unicast vrf {vrf} community {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
-            ping: StrictStr = r"ping vrf {vrf} {target} count 5 source {source}"
-            traceroute: StrictStr = r"traceroute vrf {vrf} {target} timeout 1 probe 2 source {source}"
-
-        class VPNIPv6(Command.VPNIPv6):
-            """Validation model for non-default ipv6 commands."""
-
-            bgp_route: StrictStr = r"show bgp vpnv6 unicast vrf {vrf} {target} | util egrep \\(BGP routing table entry|Path \\#|aggregated by|Origin |Community:|validity| from \\)"
-            bgp_aspath: StrictStr = r"show bgp vpnv6 unicast vrf {vrf} regexp {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
-            bgp_community: StrictStr = r"show bgp vpnv6 unicast vrf {vrf} community {target} | utility egrep -v \\(BGP |Table |Non-stop\\)"
-            ping: StrictStr = r"ping vrf {vrf} {target} count 5 source {source}"
-            traceroute: StrictStr = r"traceroute vrf {vrf} {target} timeout 1 probe 2 source {source}"
-
-        ipv4_default: IPv4 = IPv4()
-        ipv6_default: IPv6 = IPv6()
-        ipv4_vpn: VPNIPv4 = VPNIPv4()
-        ipv6_vpn: VPNIPv6 = VPNIPv6()
-
-    class Juniper(Command):
-        """Validation model for default juniper commands."""
-
-        class IPv4(Command.IPv4):
-            """Validation model for non-default dual afi commands."""
-
-            bgp_route: StrictStr = "show route protocol bgp table inet.0 {target} detail"
-            bgp_aspath: StrictStr = 'show route protocol bgp table inet.0 aspath-regex "{target}"'
-            bgp_community: StrictStr = "show route protocol bgp table inet.0 community {target}"
-            ping: StrictStr = "ping inet {target} count 5 source {source}"
-            traceroute: StrictStr = "traceroute inet {target} wait 1 source {source}"
-
-        class IPv6(Command.IPv6):
-            """Validation model for non-default ipv4 commands."""
-
-            bgp_route: StrictStr = "show route protocol bgp table inet6.0 {target} detail"
-            bgp_aspath: StrictStr = 'show route protocol bgp table inet6.0 aspath-regex "{target}"'
-            bgp_community: StrictStr = "show route protocol bgp table inet6.0 community {target}"
-            ping: StrictStr = "ping inet6 {target} count 5 source {source}"
-            traceroute: StrictStr = "traceroute inet6 {target} wait 1 source {source}"
-
-        class VPNIPv4(Command.VPNIPv4):
-            """Validation model for non-default ipv6 commands."""
-
-            bgp_route: StrictStr = "show route protocol bgp table {vrf}.inet.0 {target} detail"
-            bgp_aspath: StrictStr = 'show route protocol bgp table {vrf}.inet.0 aspath-regex "{target}"'
-            bgp_community: StrictStr = "show route protocol bgp table {vrf}.inet.0 community {target}"
-            ping: StrictStr = "ping inet routing-instance {vrf} {target} count 5 source {source}"
-            traceroute: StrictStr = "traceroute inet routing-instance {vrf} {target} wait 1 source {source}"
-
-        class VPNIPv6(Command.VPNIPv6):
-            """Validation model for non-default ipv6 commands."""
-
-            bgp_route: StrictStr = "show route protocol bgp table {vrf}.inet6.0 {target} detail"
-            bgp_aspath: StrictStr = 'show route protocol bgp table {vrf}.inet6.0 aspath-regex "{target}"'
-            bgp_community: StrictStr = "show route protocol bgp table {vrf}.inet6.0 community {target}"
-            ping: StrictStr = "ping inet6 routing-instance {vrf} {target} count 5 source {source}"
-            traceroute: StrictStr = "traceroute inet6 routing-instance {vrf} {target} wait 1 source {source}"
-
-        ipv4_default: IPv4 = IPv4()
-        ipv6_default: IPv6 = IPv6()
-        ipv4_vpn: VPNIPv4 = VPNIPv4()
-        ipv6_vpn: VPNIPv6 = VPNIPv6()
-
-    class Huawei(Command):
-        """Validation model for default huawei commands."""
-
-        class IPv4(Command.IPv4):
-            """Default commands for ipv4 commands."""
-
-            bgp_community: StrictStr = "display bgp routing-table regular-expression {target}"
-            bgp_aspath: StrictStr = "display bgp routing-table regular-expression {target}"
-            bgp_route: StrictStr = "display bgp routing-table {target}"
-            ping: StrictStr = "ping -c 5 -a {source} {target}"
-            traceroute: StrictStr = "tracert -q 2 -f 1 -a {source} {target}"
-
-        class IPv6(Command.IPv6):
-            """Default commands for ipv6 commands."""
-
-            bgp_community: StrictStr = "display bgp ipv6 routing-table community {target}"
-            bgp_aspath: StrictStr = "display bgp ipv6 routing-table regular-expression {target}"
-            bgp_route: StrictStr = "display bgp ipv6 routing-table {target}"
-            ping: StrictStr = "ping ipv6 -c 5 -a {source} {target}"
-            traceroute: StrictStr = "tracert ipv6 -q 2 -f 1 -a {source} {target}"
-
-        class VPNIPv4(Command.VPNIPv4):
-            """Default commands for dual afi commands."""
-
-            bgp_community: StrictStr = "display bgp vpnv4 vpn-instance {vrf} routing-table regular-expression {target}"
-            bgp_aspath: StrictStr = "display bgp vpnv4 vpn-instance {vrf} routing-table regular-expression {target}"
-            bgp_route: StrictStr = "display bgp vpnv4 vpn-instance {vrf} routing-table {target}"
-            ping: StrictStr = "ping -vpn-instance {vrf} -c 5 -a {source} {target}"
-            traceroute: StrictStr = "tracert -q 2 -f 1 -vpn-instance {vrf} -a {source} {target}"
-
-        class VPNIPv6(Command.VPNIPv6):
-            """Default commands for dual afi commands."""
-
-            bgp_community: StrictStr = "display bgp vpnv6 vpn-instance {vrf} routing-table regular-expression {target}"
-            bgp_aspath: StrictStr = "display bgp vpnv6 vpn-instance {vrf} routing-table regular-expression {target}"
-            bgp_route: StrictStr = "display bgp vpnv6 vpn-instance {vrf} routing-table {target}"
-            ping: StrictStr = "ping vpnv6 vpn-instance {vrf} -c 5 -a {source} {target}"
-            traceroute: StrictStr = "tracert -q 2 -f 1 vpn-instance {vrf} -a {source} {target}"
-
-        ipv4_default: IPv4 = IPv4()
-        ipv6_default: IPv6 = IPv6()
-        ipv4_vpn: VPNIPv4 = VPNIPv4()
-        ipv6_vpn: VPNIPv6 = VPNIPv6()
-
-    class Arista(Command):
-        """Validation model for non-default commands."""
-
-        class IPv4(Command.IPv4):
-            """Validation model for non-default dual afi commands."""
-
-            bgp_route: StrictStr = "show ip bgp {target}"
-            bgp_aspath: StrictStr = "show ip bgp regexp {target}"
-            bgp_community: StrictStr = "show ip bgp community {target}"
-            ping: StrictStr = "ping ip {target} source {source}"
-            traceroute: StrictStr = "traceroute ip {target} source {source}"
-
-        class IPv6(Command.IPv6):
-            """Validation model for non-default ipv4 commands."""
-
-            bgp_route: StrictStr = "show ipv6 bgp {target}"
-            bgp_aspath: StrictStr = "show ipv6 bgp regexp {target}"
-            bgp_community: StrictStr = "show ipv6 bgp community {target}"
-            ping: StrictStr = "ping ipv6 {target} source {source}"
-            traceroute: StrictStr = "traceroute ipv6 {target} source {source}"
-
-        class VPNIPv4(Command.VPNIPv4):
-            """Validation model for non-default ipv6 commands."""
-
-            bgp_route: StrictStr = "show ip bgp {target} vrf {vrf}"
-            bgp_aspath: StrictStr = "show ip bgp regexp {target} vrf {vrf}"
-            bgp_community: StrictStr = "show ip bgp community {target} vrf {vrf}"
-            ping: StrictStr = "ping vrf {vrf} ip {target} source {source}"
-            traceroute: StrictStr = "traceroute vrf {vrf} ip {target} source {source}"
-
-        class VPNIPv6(Command.VPNIPv6):
-            """Validation model for non-default ipv6 commands."""
-
-            bgp_route: StrictStr = "show ipv6 bgp {target} vrf {vrf}"
-            bgp_aspath: StrictStr = "show ipv6 bgp regexp {target} vrf {vrf}"
-            bgp_community: StrictStr = "show ipv6 bgp community {target} vrf {vrf}"
-            ping: StrictStr = "ping vrf {vrf} ipv6 {target} source {source}"
-            traceroute: StrictStr = "traceroute vrf {vrf} ipv6 {target} source {source}"
-
-        ipv4_default: IPv4 = IPv4()
-        ipv6_default: IPv6 = IPv6()
-        ipv4_vpn: VPNIPv4 = VPNIPv4()
-        ipv6_vpn: VPNIPv6 = VPNIPv6()
-
-    cisco_ios: Command = CiscoIOS()
-    cisco_xr: Command = CiscoXR()
-    juniper: Command = Juniper()
-    huawei: Command = Huawei()
-    arista: Command = Arista()
-
     class Config:
         """Override pydantic config."""