9627 use ArrayField on VLANGroup for allowed VLANs (#16710)

* 9627 initial commit

* 9627 numeric range field

* 9627 numeric range field

* 9627 numeric range field

* 9627 numeric range field

* 9627 add stuff for utilization calc

* 9627 update views

* 9627 fixes

* 9627 available_vlans

* 9627 available_vlans

* 9627 fixes

* 9627 bulk import / edit

* 9627 test fixes

* 9627 test fixes

* 9627 update validation

* 9627 fix tests

* 9627 fix tests

* 9627 fix tests

* 9627 fix tests

* 9627 fix tests

* 9627 fix tests

* 9627 review changes

* 9627 temp vlan_id filter

* Clean up labels

* Remove annotate_vlan_ranges() from VLANGroupQuerySet

* Misc cleanup

* Implement contains_vid filter

* Serialize VID ranges as integer lists in REST API

* Remove default value from vlan_id_ranges

* 9627 fix typo in test

* Require vlan_id_ranges & set default value

* Fix logic for upper range boundaries

* Add field to VLANGroup model documentation

* Rename vlan_id_ranges to vid_ranges

* Fix computation of available VLAN IDs

* Clean up migration

* Add tests for range utility functions

* Clean up add_available_vlans()

* Misc cleanup, add test for VID validation

---------

Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>

docs/models/ipam/vlangroup.md

@@ -14,9 +14,9 @@ A unique human-friendly name.
 
 A unique URL-friendly identifier. (This value can be used for filtering.)
 
-### Minimum & Maximum VLAN IDs
+### VLAN ID Ranges
 
-A minimum and maximum child VLAN ID must be set for each group. (These default to 1 and 4094 respectively.) VLANs created within a group must have a VID that falls between these values (inclusive).
+The set of VLAN IDs which are encompassed by the group. By default, this will be the entire range of valid IEEE 802.1Q VLAN IDs (1 to 4094, inclusive). VLANs created within a group must have a VID that falls within one of these ranges. Ranges may not overlap.
 
 ### Scope
 

netbox/ipam/api/serializers_/vlans.py

@@ -6,7 +6,7 @@ from dcim.api.serializers_.sites import SiteSerializer
 from ipam.choices import *
 from ipam.constants import VLANGROUP_SCOPE_TYPES
 from ipam.models import VLAN, VLANGroup
-from netbox.api.fields import ChoiceField, ContentTypeField, RelatedObjectCountField
+from netbox.api.fields import ChoiceField, ContentTypeField, IntegerRangeSerializer, RelatedObjectCountField
 from netbox.api.serializers import NetBoxModelSerializer
 from tenancy.api.serializers_.tenants import TenantSerializer
 from utilities.api import get_serializer_for_model
@@ -32,6 +32,7 @@ class VLANGroupSerializer(NetBoxModelSerializer):
     )
     scope_id = serializers.IntegerField(allow_null=True, required=False, default=None)
     scope = serializers.SerializerMethodField(read_only=True)
+    vid_ranges = IntegerRangeSerializer(many=True, required=False)
     utilization = serializers.CharField(read_only=True)
 
     # Related object counts
@@ -40,8 +41,8 @@ class VLANGroupSerializer(NetBoxModelSerializer):
     class Meta:
         model = VLANGroup
         fields = [
-            'id', 'url', 'display_url', 'display', 'name', 'slug', 'scope_type', 'scope_id', 'scope', 'min_vid',
+            'id', 'url', 'display_url', 'display', 'name', 'slug', 'scope_type', 'scope_id', 'scope', 'vid_ranges',
-            'max_vid', 'description', 'tags', 'custom_fields', 'created', 'last_updated', 'vlan_count', 'utilization'
+            'description', 'tags', 'custom_fields', 'created', 'last_updated', 'vlan_count', 'utilization'
         ]
         brief_fields = ('id', 'url', 'display', 'name', 'slug', 'description', 'vlan_count')
         validators = []

netbox/ipam/filtersets.py

@@ -911,10 +911,13 @@ class VLANGroupFilterSet(OrganizationalModelFilterSet):
     cluster = django_filters.NumberFilter(
         method='filter_scope'
     )
+    contains_vid = django_filters.NumberFilter(
+        method='filter_contains_vid'
+    )
 
     class Meta:
         model = VLANGroup
-        fields = ('id', 'name', 'slug', 'min_vid', 'max_vid', 'description', 'scope_id')
+        fields = ('id', 'name', 'slug', 'description', 'scope_id')
 
     def search(self, queryset, name, value):
         if not value.strip():
@@ -932,6 +935,21 @@ class VLANGroupFilterSet(OrganizationalModelFilterSet):
             scope_id=value
         )
 
+    def filter_contains_vid(self, queryset, name, value):
+        """
+        Return all VLANGroups which contain the given VLAN ID.
+        """
+        table_name = VLANGroup._meta.db_table
+        # TODO: See if this can be optimized without compromising queryset integrity
+        # Expand VLAN ID ranges to query by integer
+        groups = VLANGroup.objects.raw(
+            f'SELECT id FROM {table_name}, unnest(vid_ranges) vid_range WHERE %s <@ vid_range',
+            params=(value,)
+        )
+        return queryset.filter(
+            pk__in=[g.id for g in groups]
+        )
+
 
 class VLANFilterSet(NetBoxModelFilterSet, TenancyFilterSet):
     region_id = TreeNodeMultipleChoiceFilter(

netbox/ipam/forms/bulk_edit.py

@@ -12,6 +12,7 @@ from tenancy.models import Tenant
 from utilities.forms import add_blank_choice
 from utilities.forms.fields import (
     CommentField, ContentTypeChoiceField, DynamicModelChoiceField, DynamicModelMultipleChoiceField, NumericArrayField,
+    NumericRangeArrayField,
 )
 from utilities.forms.rendering import FieldSet
 from utilities.forms.widgets import BulkEditNullBooleanSelect
@@ -408,18 +409,6 @@ class FHRPGroupBulkEditForm(NetBoxModelBulkEditForm):
 
 
 class VLANGroupBulkEditForm(NetBoxModelBulkEditForm):
-    min_vid = forms.IntegerField(
-        min_value=VLAN_VID_MIN,
-        max_value=VLAN_VID_MAX,
-        required=False,
-        label=_('Minimum child VLAN VID')
-    )
-    max_vid = forms.IntegerField(
-        min_value=VLAN_VID_MIN,
-        max_value=VLAN_VID_MAX,
-        required=False,
-        label=_('Maximum child VLAN VID')
-    )
     description = forms.CharField(
         label=_('Description'),
         max_length=200,
@@ -483,10 +472,14 @@ class VLANGroupBulkEditForm(NetBoxModelBulkEditForm):
             'group_id': '$clustergroup',
         }
     )
+    vid_ranges = NumericRangeArrayField(
+        label=_('VLAN ID ranges'),
+        required=False
+    )
 
     model = VLANGroup
     fieldsets = (
-        FieldSet('site', 'min_vid', 'max_vid', 'description'),
+        FieldSet('site', 'vid_ranges', 'description'),
         FieldSet(
             'scope_type', 'region', 'sitegroup', 'site', 'location', 'rack', 'clustergroup', 'cluster', name=_('Scope')
         ),

netbox/ipam/forms/bulk_import.py

@@ -9,7 +9,8 @@ from ipam.models import *
 from netbox.forms import NetBoxModelImportForm
 from tenancy.models import Tenant
 from utilities.forms.fields import (
-    CSVChoiceField, CSVContentTypeField, CSVModelChoiceField, CSVModelMultipleChoiceField, SlugField
+    CSVChoiceField, CSVContentTypeField, CSVModelChoiceField, CSVModelMultipleChoiceField, SlugField,
+    NumericRangeArrayField,
 )
 from virtualization.models import VirtualMachine, VMInterface
 
@@ -411,22 +412,13 @@ class VLANGroupImportForm(NetBoxModelImportForm):
         required=False,
         label=_('Scope type (app & model)')
     )
-    min_vid = forms.IntegerField(
+    vid_ranges = NumericRangeArrayField(
-        min_value=VLAN_VID_MIN,
+        required=False
-        max_value=VLAN_VID_MAX,
-        required=False,
-        label=_('Minimum child VLAN VID (default: {minimum})').format(minimum=VLAN_VID_MIN)
-    )
-    max_vid = forms.IntegerField(
-        min_value=VLAN_VID_MIN,
-        max_value=VLAN_VID_MAX,
-        required=False,
-        label=_('Maximum child VLAN VID (default: {maximum})').format(maximum=VLAN_VID_MIN)
     )
 
     class Meta:
         model = VLANGroup
-        fields = ('name', 'slug', 'scope_type', 'scope_id', 'min_vid', 'max_vid', 'description', 'tags')
+        fields = ('name', 'slug', 'scope_type', 'scope_id', 'vid_ranges', 'description', 'tags')
         labels = {
             'scope_id': 'Scope ID',
         }

netbox/ipam/forms/filtersets.py

@@ -413,7 +413,7 @@ class VLANGroupFilterForm(NetBoxModelFilterSetForm):
         FieldSet('q', 'filter_id', 'tag'),
         FieldSet('region', 'sitegroup', 'site', 'location', 'rack', name=_('Location')),
         FieldSet('cluster_group', 'cluster', name=_('Cluster')),
-        FieldSet('min_vid', 'max_vid', name=_('VLAN ID')),
+        FieldSet('contains_vid', name=_('VLANs')),
     )
     model = VLANGroup
     region = DynamicModelMultipleChoiceField(
@@ -441,18 +441,6 @@ class VLANGroupFilterForm(NetBoxModelFilterSetForm):
         required=False,
         label=_('Rack')
     )
-    min_vid = forms.IntegerField(
-        required=False,
-        min_value=VLAN_VID_MIN,
-        max_value=VLAN_VID_MAX,
-        label=_('Minimum VID')
-    )
-    max_vid = forms.IntegerField(
-        required=False,
-        min_value=VLAN_VID_MIN,
-        max_value=VLAN_VID_MAX,
-        label=_('Maximum VID')
-    )
     cluster = DynamicModelMultipleChoiceField(
         queryset=Cluster.objects.all(),
         required=False,
@@ -463,6 +451,11 @@ class VLANGroupFilterForm(NetBoxModelFilterSetForm):
         required=False,
         label=_('Cluster group')
     )
+    contains_vid = forms.IntegerField(
+        min_value=0,
+        required=False,
+        label=_('Contains VLAN ID')
+    )
 
     tag = TagFilterField(model)
 

netbox/ipam/forms/model_forms.py

@@ -1,5 +1,6 @@
 from django import forms
 from django.contrib.contenttypes.models import ContentType
+from django.contrib.postgres.forms import IntegerRangeField, SimpleArrayField
 from django.core.exceptions import ValidationError
 from django.utils.translation import gettext_lazy as _
 
@@ -14,7 +15,7 @@ from utilities.exceptions import PermissionsViolation
 from utilities.forms import add_blank_choice
 from utilities.forms.fields import (
     CommentField, ContentTypeChoiceField, DynamicModelChoiceField, DynamicModelMultipleChoiceField, NumericArrayField,
-    SlugField,
+    NumericRangeArrayField, SlugField
 )
 from utilities.forms.rendering import FieldSet, InlineFields, ObjectAttribute, TabbedGroups
 from utilities.forms.widgets import DatePicker
@@ -632,10 +633,13 @@ class VLANGroupForm(NetBoxModelForm):
         }
     )
     slug = SlugField()
+    vid_ranges = NumericRangeArrayField(
+        label=_('VLAN IDs')
+    )
 
     fieldsets = (
         FieldSet('name', 'slug', 'description', 'tags', name=_('VLAN Group')),
-        FieldSet('min_vid', 'max_vid', name=_('Child VLANs')),
+        FieldSet('vid_ranges', name=_('Child VLANs')),
         FieldSet(
             'scope_type', 'region', 'sitegroup', 'site', 'location', 'rack', 'clustergroup', 'cluster',
             name=_('Scope')
@@ -646,7 +650,7 @@ class VLANGroupForm(NetBoxModelForm):
         model = VLANGroup
         fields = [
             'name', 'slug', 'description', 'scope_type', 'region', 'sitegroup', 'site', 'location', 'rack',
-            'clustergroup', 'cluster', 'min_vid', 'max_vid', 'tags',
+            'clustergroup', 'cluster', 'vid_ranges', 'tags',
         ]
 
     def __init__(self, *args, **kwargs):

netbox/ipam/graphql/types.py

@@ -251,6 +251,7 @@ class VLANType(NetBoxObjectType):
 class VLANGroupType(OrganizationalObjectType):
 
     vlans: List[VLANType]
+    vid_ranges: List[str]
 
     @strawberry_django.field
     def scope(self) -> Annotated[Union[

netbox/ipam/migrations/0070_vlangroup_vlan_id_ranges.py

@@ -0,0 +1,55 @@
+import django.contrib.postgres.fields
+import django.contrib.postgres.fields.ranges
+from django.db import migrations, models
+from django.db.backends.postgresql.psycopg_any import NumericRange
+
+import ipam.models.vlans
+
+
+def set_vid_ranges(apps, schema_editor):
+    """
+    Convert the min_vid & max_vid fields to a range in the new vid_ranges ArrayField.
+    """
+    VLANGroup = apps.get_model('ipam', 'VLANGroup')
+    for group in VLANGroup.objects.all():
+        group.vid_ranges = [
+            NumericRange(group.min_vid, group.max_vid, bounds='[]')
+        ]
+        group._total_vlan_ids = group.max_vid - group.min_vid + 1
+        group.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('ipam', '0069_gfk_indexes'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='vlangroup',
+            name='vid_ranges',
+            field=django.contrib.postgres.fields.ArrayField(
+                base_field=django.contrib.postgres.fields.ranges.IntegerRangeField(),
+                default=ipam.models.vlans.default_vid_ranges,
+                size=None
+            ),
+        ),
+        migrations.AddField(
+            model_name='vlangroup',
+            name='_total_vlan_ids',
+            field=models.PositiveBigIntegerField(default=4094),
+        ),
+        migrations.RunPython(
+            code=set_vid_ranges,
+            reverse_code=migrations.RunPython.noop
+        ),
+        migrations.RemoveField(
+            model_name='vlangroup',
+            name='max_vid',
+        ),
+        migrations.RemoveField(
+            model_name='vlangroup',
+            name='min_vid',
+        ),
+    ]

netbox/ipam/models/vlans.py

@@ -1,7 +1,9 @@
 from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation
+from django.contrib.postgres.fields import ArrayField, IntegerRangeField
 from django.core.exceptions import ValidationError
 from django.core.validators import MaxValueValidator, MinValueValidator
 from django.db import models
+from django.db.backends.postgresql.psycopg_any import NumericRange
 from django.urls import reverse
 from django.utils.translation import gettext_lazy as _
 
@@ -10,6 +12,7 @@ from ipam.choices import *
 from ipam.constants import *
 from ipam.querysets import VLANQuerySet, VLANGroupQuerySet
 from netbox.models import OrganizationalModel, PrimaryModel
+from utilities.data import check_ranges_overlap, ranges_to_string
 from virtualization.models import VMInterface
 
 __all__ = (
@@ -18,9 +21,16 @@ __all__ = (
 )
 
 
+def default_vid_ranges():
+    return [
+        NumericRange(VLAN_VID_MIN, VLAN_VID_MAX, bounds='[]')
+    ]
+
+
 class VLANGroup(OrganizationalModel):
     """
-    A VLAN group is an arbitrary collection of VLANs within which VLAN IDs and names must be unique.
+    A VLAN group is an arbitrary collection of VLANs within which VLAN IDs and names must be unique. Each group must
+     define one or more ranges of valid VLAN IDs, and may be assigned a specific scope.
     """
     name = models.CharField(
         verbose_name=_('name'),
@@ -45,23 +55,13 @@ class VLANGroup(OrganizationalModel):
         ct_field='scope_type',
         fk_field='scope_id'
     )
-    min_vid = models.PositiveSmallIntegerField(
+    vid_ranges = ArrayField(
-        verbose_name=_('minimum VLAN ID'),
+        IntegerRangeField(),
-        default=VLAN_VID_MIN,
+        verbose_name=_('VLAN ID ranges'),
-        validators=(
+        default=default_vid_ranges
-            MinValueValidator(VLAN_VID_MIN),
-            MaxValueValidator(VLAN_VID_MAX)
-        ),
-        help_text=_('Lowest permissible ID of a child VLAN')
     )
-    max_vid = models.PositiveSmallIntegerField(
+    _total_vlan_ids = models.PositiveBigIntegerField(
-        verbose_name=_('maximum VLAN ID'),
+        default=VLAN_VID_MAX - VLAN_VID_MIN + 1
-        default=VLAN_VID_MAX,
-        validators=(
-            MinValueValidator(VLAN_VID_MIN),
-            MaxValueValidator(VLAN_VID_MAX)
-        ),
-        help_text=_('Highest permissible ID of a child VLAN')
     )
 
     objects = VLANGroupQuerySet.as_manager()
@@ -96,17 +96,33 @@ class VLANGroup(OrganizationalModel):
         if self.scope_id and not self.scope_type:
             raise ValidationError(_("Cannot set scope_id without scope_type."))
 
-        # Validate min/max child VID limits
+        # Validate VID ranges
-        if self.max_vid < self.min_vid:
+        if self.vid_ranges and check_ranges_overlap(self.vid_ranges):
-            raise ValidationError({
+            raise ValidationError({'vid_ranges': _("Ranges cannot overlap.")})
-                'max_vid': _("Maximum child VID must be greater than or equal to minimum child VID")
+        for vid_range in self.vid_ranges:
-            })
+            if vid_range.lower >= vid_range.upper:
+                raise ValidationError({
+                    'vid_ranges': _(
+                        "Maximum child VID must be greater than or equal to minimum child VID ({value})"
+                    ).format(value=vid_range)
+                })
+
+    def save(self, *args, **kwargs):
+        self._total_vlan_ids = 0
+        for vid_range in self.vid_ranges:
+            self._total_vlan_ids += vid_range.upper - vid_range.lower + 1
+
+        super().save(*args, **kwargs)
 
     def get_available_vids(self):
         """
         Return all available VLANs within this group.
         """
-        available_vlans = {vid for vid in range(self.min_vid, self.max_vid + 1)}
+        available_vlans = set()
+        for vlan_range in self.vid_ranges:
+            available_vlans = available_vlans.union({
+                vid for vid in range(vlan_range.lower, vlan_range.upper)
+            })
         available_vlans -= set(VLAN.objects.filter(group=self).values_list('vid', flat=True))
 
         return sorted(available_vlans)
@@ -126,6 +142,10 @@ class VLANGroup(OrganizationalModel):
         """
         return VLAN.objects.filter(group=self).order_by('vid')
 
+    @property
+    def vid_ranges_list(self):
+        return ranges_to_string(self.vid_ranges)
+
 
 class VLAN(PrimaryModel):
     """
@@ -231,13 +251,14 @@ class VLAN(PrimaryModel):
                 ).format(group=self.group, scope=self.group.scope, site=self.site)
             )
 
-        # Validate group min/max VIDs
+        # Check that the VLAN ID is permitted in the assigned group (if any)
-        if self.group and not self.group.min_vid <= self.vid <= self.group.max_vid:
+        if self.group:
-            raise ValidationError({
+            if not any([self.vid in r for r in self.group.vid_ranges]):
-                'vid': _(
+                raise ValidationError({
-                    "VID must be between {minimum} and {maximum} for VLANs in group {group}"
+                    'vid': _(
-                ).format(minimum=self.group.min_vid, maximum=self.group.max_vid, group=self.group)
+                        "VID must be in ranges {ranges} for VLANs in group {group}"
-            })
+                    ).format(ranges=ranges_to_string(self.group.vid_ranges), group=self.group)
+                })
 
     def get_status_color(self):
         return VLANStatusChoices.colors.get(self.status)

netbox/ipam/querysets.py

@@ -9,6 +9,7 @@ from utilities.querysets import RestrictedQuerySet
 __all__ = (
     'ASNRangeQuerySet',
     'PrefixQuerySet',
+    'VLANGroupQuerySet',
     'VLANQuerySet',
 )
 
@@ -63,7 +64,7 @@ class VLANGroupQuerySet(RestrictedQuerySet):
 
         return self.annotate(
             vlan_count=count_related(VLAN, 'group'),
-            utilization=Round(F('vlan_count') / (F('max_vid') - F('min_vid') + 1.0) * 100, 2)
+            utilization=Round(F('vlan_count') * 100 / F('_total_vlan_ids'), 2)
         )
 
 

netbox/ipam/search.py

@@ -154,9 +154,8 @@ class VLANGroupIndex(SearchIndex):
         ('name', 100),
         ('slug', 110),
         ('description', 500),
-        ('max_vid', 2000),
     )
-    display_attrs = ('scope_type', 'min_vid', 'max_vid', 'description')
+    display_attrs = ('scope_type', 'description')
 
 
 @register_search

netbox/ipam/tables/vlans.py

@@ -72,6 +72,10 @@ class VLANGroupTable(NetBoxTable):
         linkify=True,
         orderable=False
     )
+    vid_ranges_list = tables.Column(
+        verbose_name=_('VID Ranges'),
+        orderable=False
+    )
     vlan_count = columns.LinkedCountColumn(
         viewname='ipam:vlan_list',
         url_params={'group_id': 'pk'},
@@ -91,7 +95,7 @@ class VLANGroupTable(NetBoxTable):
     class Meta(NetBoxTable.Meta):
         model = VLANGroup
         fields = (
-            'pk', 'id', 'name', 'scope_type', 'scope', 'min_vid', 'max_vid', 'vlan_count', 'slug', 'description',
+            'pk', 'id', 'name', 'scope_type', 'scope', 'vid_ranges_list', 'vlan_count', 'slug', 'description',
             'tags', 'created', 'last_updated', 'actions', 'utilization',
         )
         default_columns = ('pk', 'name', 'scope_type', 'scope', 'vlan_count', 'utilization', 'description')

netbox/ipam/tests/test_api.py

@@ -8,6 +8,7 @@ from dcim.models import Device, DeviceRole, DeviceType, Interface, Manufacturer,
 from ipam.choices import *
 from ipam.models import *
 from tenancy.models import Tenant
+from utilities.data import string_to_ranges
 from utilities.testing import APITestCase, APIViewTestCases, create_test_device, disable_warnings
 
 
@@ -882,8 +883,7 @@ class VLANGroupTest(APIViewTestCases.APIViewTestCase):
         vlangroup = VLANGroup.objects.create(
             name='VLAN Group X',
             slug='vlan-group-x',
-            min_vid=MIN_VID,
+            vid_ranges=string_to_ranges(f"{MIN_VID}-{MAX_VID}")
-            max_vid=MAX_VID
         )
 
         # Create a set of VLANs within the group

netbox/ipam/tests/test_filtersets.py

@@ -1,4 +1,5 @@
 from django.contrib.contenttypes.models import ContentType
+from django.db.backends.postgresql.psycopg_any import NumericRange
 from django.test import TestCase
 from netaddr import IPNetwork
 
@@ -1465,6 +1466,7 @@ class FHRPGroupAssignmentTestCase(TestCase, ChangeLoggedFilterSetTests):
 class VLANGroupTestCase(TestCase, ChangeLoggedFilterSetTests):
     queryset = VLANGroup.objects.all()
     filterset = VLANGroupFilterSet
+    ignore_fields = ('vid_ranges',)
 
     @classmethod
     def setUpTestData(cls):
@@ -1494,14 +1496,55 @@ class VLANGroupTestCase(TestCase, ChangeLoggedFilterSetTests):
         cluster.save()
 
         vlan_groups = (
-            VLANGroup(name='VLAN Group 1', slug='vlan-group-1', scope=region, description='foobar1'),
+            VLANGroup(
-            VLANGroup(name='VLAN Group 2', slug='vlan-group-2', scope=sitegroup, description='foobar2'),
+                name='VLAN Group 1',
-            VLANGroup(name='VLAN Group 3', slug='vlan-group-3', scope=site, description='foobar3'),
+                slug='vlan-group-1',
-            VLANGroup(name='VLAN Group 4', slug='vlan-group-4', scope=location),
+                vid_ranges=[NumericRange(1, 11), NumericRange(100, 200)],
-            VLANGroup(name='VLAN Group 5', slug='vlan-group-5', scope=rack),
+                scope=region,
-            VLANGroup(name='VLAN Group 6', slug='vlan-group-6', scope=clustergroup),
+                description='foobar1'
-            VLANGroup(name='VLAN Group 7', slug='vlan-group-7', scope=cluster),
+            ),
-            VLANGroup(name='VLAN Group 8', slug='vlan-group-8'),
+            VLANGroup(
+                name='VLAN Group 2',
+                slug='vlan-group-2',
+                vid_ranges=[NumericRange(1, 11), NumericRange(200, 300)],
+                scope=sitegroup,
+                description='foobar2'
+            ),
+            VLANGroup(
+                name='VLAN Group 3',
+                slug='vlan-group-3',
+                vid_ranges=[NumericRange(1, 11), NumericRange(300, 400)],
+                scope=site,
+                description='foobar3'
+            ),
+            VLANGroup(
+                name='VLAN Group 4',
+                slug='vlan-group-4',
+                vid_ranges=[NumericRange(1, 11), NumericRange(400, 500)],
+                scope=location
+            ),
+            VLANGroup(
+                name='VLAN Group 5',
+                slug='vlan-group-5',
+                vid_ranges=[NumericRange(1, 11), NumericRange(500, 600)],
+                scope=rack
+            ),
+            VLANGroup(
+                name='VLAN Group 6',
+                slug='vlan-group-6',
+                vid_ranges=[NumericRange(1, 11), NumericRange(600, 700)],
+                scope=clustergroup
+            ),
+            VLANGroup(
+                name='VLAN Group 7',
+                slug='vlan-group-7',
+                vid_ranges=[NumericRange(1, 11), NumericRange(700, 800)],
+                scope=cluster
+            ),
+            VLANGroup(
+                name='VLAN Group 8',
+                slug='vlan-group-8'
+            ),
         )
         VLANGroup.objects.bulk_create(vlan_groups)
 
@@ -1521,6 +1564,12 @@ class VLANGroupTestCase(TestCase, ChangeLoggedFilterSetTests):
         params = {'description': ['foobar1', 'foobar2']}
         self.assertEqual(self.filterset(params, self.queryset).qs.count(), 2)
 
+    def test_contains_vid(self):
+        params = {'contains_vid': 123}
+        self.assertEqual(self.filterset(params, self.queryset).qs.count(), 2)
+        params = {'contains_vid': 1}
+        self.assertEqual(self.filterset(params, self.queryset).qs.count(), 8)
+
     def test_region(self):
         params = {'region': Region.objects.first().pk}
         self.assertEqual(self.filterset(params, self.queryset).qs.count(), 1)

netbox/ipam/tests/test_models.py

@@ -1,6 +1,7 @@
 from django.core.exceptions import ValidationError
 from django.test import TestCase, override_settings
 from netaddr import IPNetwork, IPSet
+from utilities.data import string_to_ranges
 
 from ipam.choices import *
 from ipam.models import *
@@ -509,8 +510,7 @@ class TestVLANGroup(TestCase):
         vlangroup = VLANGroup.objects.create(
             name='VLAN Group 1',
             slug='vlan-group-1',
-            min_vid=100,
+            vid_ranges=string_to_ranges('100-199'),
-            max_vid=199
         )
         VLAN.objects.bulk_create((
             VLAN(name='VLAN 100', vid=100, group=vlangroup),
@@ -533,3 +533,13 @@ class TestVLANGroup(TestCase):
 
         VLAN.objects.create(name='VLAN 104', vid=104, group=vlangroup)
         self.assertEqual(vlangroup.get_next_available_vid(), 105)
+
+    def test_vid_validation(self):
+        vlangroup = VLANGroup.objects.first()
+
+        vlan = VLAN(vid=1, name='VLAN 1', group=vlangroup)
+        with self.assertRaises(ValidationError):
+            vlan.full_clean()
+
+        vlan = VLAN(vid=109, name='VLAN 109', group=vlangroup)
+        vlan.full_clean()

netbox/ipam/tests/test_views.py

@@ -764,9 +764,8 @@ class VLANGroupTestCase(ViewTestCases.OrganizationalObjectViewTestCase):
         cls.form_data = {
             'name': 'VLAN Group X',
             'slug': 'vlan-group-x',
-            'min_vid': 1,
-            'max_vid': 4094,
             'description': 'A new VLAN group',
+            'vid_ranges': '100-199,300-399',
             'tags': [t.pk for t in tags],
         }
 

netbox/ipam/utils.py

@@ -90,12 +90,12 @@ def add_available_ipaddresses(prefix, ipaddress_list, is_pool=False):
     return output
 
 
-def add_available_vlans(vlans, vlan_group=None):
+def available_vlans_from_range(vlans, vlan_group, vlan_range):
     """
     Create fake records for all gaps between used VLANs
     """
-    min_vid = vlan_group.min_vid if vlan_group else VLAN_VID_MIN
+    min_vid = int(vlan_range.lower) if vlan_range else VLAN_VID_MIN
-    max_vid = vlan_group.max_vid if vlan_group else VLAN_VID_MAX
+    max_vid = int(vlan_range.upper) if vlan_range else VLAN_VID_MAX
 
     if not vlans:
         return [{
@@ -128,6 +128,17 @@ def add_available_vlans(vlans, vlan_group=None):
             'available': max_vid - prev_vid,
         })
 
+    return new_vlans
+
+
+def add_available_vlans(vlans, vlan_group):
+    """
+    Create fake records for all gaps between used VLANs
+    """
+    new_vlans = []
+    for vlan_range in vlan_group.vid_ranges:
+        new_vlans.extend(available_vlans_from_range(vlans, vlan_group, vlan_range))
+
     vlans = list(vlans) + new_vlans
     vlans.sort(key=lambda v: v.vid if type(v) is VLAN else v['vid'])
 

netbox/ipam/views.py

@@ -915,7 +915,7 @@ class IPAddressContactsView(ObjectContactsView):
 #
 
 class VLANGroupListView(generic.ObjectListView):
-    queryset = VLANGroup.objects.annotate_utilization().prefetch_related('tags')
+    queryset = VLANGroup.objects.annotate_utilization()
     filterset = filtersets.VLANGroupFilterSet
     filterset_form = forms.VLANGroupFilterForm
     table = tables.VLANGroupTable
@@ -923,7 +923,7 @@ class VLANGroupListView(generic.ObjectListView):
 
 @register_model_view(VLANGroup)
 class VLANGroupView(GetRelatedModelsMixin, generic.ObjectView):
-    queryset = VLANGroup.objects.annotate_utilization().prefetch_related('tags')
+    queryset = VLANGroup.objects.annotate_utilization()
 
     def get_extra_context(self, request, instance):
         return {

netbox/netbox/api/fields.py

@@ -1,4 +1,5 @@
 from django.core.exceptions import ObjectDoesNotExist
+from django.db.backends.postgresql.psycopg_any import NumericRange
 from django.utils.translation import gettext as _
 from drf_spectacular.types import OpenApiTypes
 from drf_spectacular.utils import extend_schema_field
@@ -11,6 +12,7 @@ __all__ = (
     'ChoiceField',
     'ContentTypeField',
     'IPNetworkSerializer',
+    'IntegerRangeSerializer',
     'RelatedObjectCountField',
     'SerializedPKRelatedField',
 )
@@ -154,3 +156,19 @@ class RelatedObjectCountField(serializers.ReadOnlyField):
         self.relation = relation
 
         super().__init__(**kwargs)
+
+
+class IntegerRangeSerializer(serializers.Serializer):
+    """
+    Represents a range of integers.
+    """
+    def to_internal_value(self, data):
+        if not isinstance(data, (list, tuple)) or len(data) != 2:
+            raise ValidationError(_("Ranges must be specified in the form (lower, upper)."))
+        if type(data[0]) is not int or type(data[1]) is not int:
+            raise ValidationError(_("Range boundaries must be defined as integers."))
+
+        return NumericRange(data[0], data[1], bounds='[]')
+
+    def to_representation(self, instance):
+        return instance.lower, instance.upper - 1

netbox/templates/ipam/vlangroup.html

@@ -39,8 +39,8 @@
           <td>{{ object.scope|linkify|placeholder }}</td>
         </tr>
         <tr>
-          <th scope="row">{% trans "Permitted VIDs" %}</th>
+          <th scope="row">{% trans "VLAN IDs" %}</th>
-          <td>{{ object.min_vid }} - {{ object.max_vid }}</td>
+          <td>{{ object.vid_ranges_list }}</td>
         </tr>
         <tr>
           <th scope="row">Utilization</th>

netbox/utilities/data.py

@@ -1,13 +1,17 @@
 import decimal
+from django.db.backends.postgresql.psycopg_any import NumericRange
 from itertools import count, groupby
 
 __all__ = (
     'array_to_ranges',
     'array_to_string',
+    'check_ranges_overlap',
     'deepmerge',
     'drange',
     'flatten_dict',
+    'ranges_to_string',
     'shallow_compare_dict',
+    'string_to_ranges',
 )
 
 
@@ -113,3 +117,52 @@ def drange(start, end, step=decimal.Decimal(1)):
         while start > end:
             yield start
             start += step
+
+
+def check_ranges_overlap(ranges):
+    """
+    Check for overlap in an iterable of NumericRanges.
+    """
+    ranges.sort(key=lambda x: x.lower)
+
+    for i in range(1, len(ranges)):
+        prev_range = ranges[i - 1]
+        prev_upper = prev_range.upper if prev_range.upper_inc else prev_range.upper - 1
+        lower = ranges[i].lower if ranges[i].lower_inc else ranges[i].lower + 1
+        if prev_upper >= lower:
+            return True
+
+    return False
+
+
+def ranges_to_string(ranges):
+    """
+    Generate a human-friendly string from a set of ranges. Intended for use with ArrayField. For example:
+        [[1, 100)], [200, 300)] => "1-99,200-299"
+    """
+    if not ranges:
+        return ''
+    output = []
+    for r in ranges:
+        lower = r.lower if r.lower_inc else r.lower + 1
+        upper = r.upper if r.upper_inc else r.upper - 1
+        output.append(f'{lower}-{upper}')
+    return ','.join(output)
+
+
+def string_to_ranges(value):
+    """
+    Given a string in the format "1-100, 200-300" return an list of NumericRanges. Intended for use with ArrayField.
+    For example:
+        "1-99,200-299" => [NumericRange(1, 100), NumericRange(200, 300)]
+    """
+    if not value:
+        return None
+    value.replace(' ', '')  # Remove whitespace
+    values = []
+    for dash_range in value.split(','):
+        if '-' not in dash_range:
+            return None
+        lower, upper = dash_range.split('-')
+        values.append(NumericRange(int(lower), int(upper), bounds='[]'))
+    return values

netbox/utilities/forms/fields/array.py

@@ -1,11 +1,14 @@
 from django import forms
 from django.contrib.postgres.forms import SimpleArrayField
+from django.utils.safestring import mark_safe
 from django.utils.translation import gettext_lazy as _
+from utilities.data import ranges_to_string, string_to_ranges
 
 from ..utils import parse_numeric_range
 
 __all__ = (
     'NumericArrayField',
+    'NumericRangeArrayField',
 )
 
 
@@ -24,3 +27,31 @@ class NumericArrayField(SimpleArrayField):
         if isinstance(value, str):
             value = ','.join([str(n) for n in parse_numeric_range(value)])
         return super().to_python(value)
+
+
+class NumericRangeArrayField(forms.CharField):
+    """
+    A field which allows for array of numeric ranges:
+      Example: 1-5,7-20,30-50
+    """
+    def __init__(self, *args, help_text='', **kwargs):
+        if not help_text:
+            help_text = mark_safe(
+                _("Specify one or more numeric ranges separated by commas. Example: " + "<code>1-5,20-30</code>")
+            )
+        super().__init__(*args, help_text=help_text, **kwargs)
+
+    def clean(self, value):
+        if value and not self.to_python(value):
+            raise forms.ValidationError(
+                _("Invalid ranges ({value}). Must be a range of integers in ascending order.").format(value=value)
+            )
+        return super().clean(value)
+
+    def prepare_value(self, value):
+        if isinstance(value, str):
+            return value
+        return ranges_to_string(value)
+
+    def to_python(self, value):
+        return string_to_ranges(value)

netbox/utilities/testing/base.py

@@ -2,7 +2,7 @@ import json
 
 from django.contrib.auth import get_user_model
 from django.contrib.contenttypes.models import ContentType
-from django.contrib.postgres.fields import ArrayField
+from django.contrib.postgres.fields import ArrayField, RangeField
 from django.core.exceptions import FieldDoesNotExist
 from django.db.models import ManyToManyField, ManyToManyRel, JSONField
 from django.forms.models import model_to_dict
@@ -12,6 +12,7 @@ from taggit.managers import TaggableManager
 
 from core.models import ObjectType
 from users.models import ObjectPermission
+from utilities.data import ranges_to_string
 from utilities.object_types import object_type_identifier
 from utilities.permissions import resolve_permission_type
 from .utils import DUMMY_CF_DATA, extract_form_failures
@@ -139,6 +140,9 @@ class ModelTestCase(TestCase):
                     if type(field.base_field) is ArrayField:
                         # Handle nested arrays (e.g. choice sets)
                         model_dict[key] = '\n'.join([f'{k},{v}' for k, v in value])
+                    elif issubclass(type(field.base_field), RangeField):
+                        # Handle arrays of numeric ranges (e.g. VLANGroup VLAN ID ranges)
+                        model_dict[key] = ranges_to_string(value)
                     else:
                         model_dict[key] = ','.join([str(v) for v in value])
 

netbox/utilities/tests/test_data.py

@@ -0,0 +1,68 @@
+from django.db.backends.postgresql.psycopg_any import NumericRange
+from django.test import TestCase
+
+from utilities.data import check_ranges_overlap, ranges_to_string, string_to_ranges
+
+
+class RangeFunctionsTestCase(TestCase):
+
+    def test_check_ranges_overlap(self):
+        # Non-overlapping ranges
+        self.assertFalse(
+            check_ranges_overlap([
+                NumericRange(9, 19, bounds='(]'),   # 10-19
+                NumericRange(19, 30, bounds='(]'),  # 20-29
+            ])
+        )
+        self.assertFalse(
+            check_ranges_overlap([
+                NumericRange(10, 19, bounds='[]'),  # 10-19
+                NumericRange(20, 29, bounds='[]'),  # 20-29
+            ])
+        )
+        self.assertFalse(
+            check_ranges_overlap([
+                NumericRange(10, 20, bounds='[)'),  # 10-19
+                NumericRange(20, 30, bounds='[)'),  # 20-29
+            ])
+        )
+
+        # Overlapping ranges
+        self.assertTrue(
+            check_ranges_overlap([
+                NumericRange(9, 20, bounds='(]'),   # 10-20
+                NumericRange(19, 30, bounds='(]'),  # 20-30
+            ])
+        )
+        self.assertTrue(
+            check_ranges_overlap([
+                NumericRange(10, 20, bounds='[]'),  # 10-20
+                NumericRange(20, 30, bounds='[]'),  # 20-30
+            ])
+        )
+        self.assertTrue(
+            check_ranges_overlap([
+                NumericRange(10, 21, bounds='[)'),  # 10-20
+                NumericRange(20, 31, bounds='[)'),  # 10-30
+            ])
+        )
+
+    def test_ranges_to_string(self):
+        self.assertEqual(
+            ranges_to_string([
+                NumericRange(10, 20),    # 10-19
+                NumericRange(30, 40),    # 30-39
+                NumericRange(100, 200),  # 100-199
+            ]),
+            '10-19,30-39,100-199'
+        )
+
+    def test_string_to_ranges(self):
+        self.assertEqual(
+            string_to_ranges('10-19, 30-39, 100-199'),
+            [
+                NumericRange(10, 19, bounds='[]'),    # 10-19
+                NumericRange(30, 39, bounds='[]'),    # 30-39
+                NumericRange(100, 199, bounds='[]'),  # 100-199
+            ]
+        )