diff --git a/database/migrations/2024_10_06_002633_ports_vlans_table_add_port_id_index.php b/database/migrations/2024_10_06_002633_ports_vlans_table_add_port_id_index.php
new file mode 100644
index 0000000000..bf15b67f4a
--- /dev/null
+++ b/database/migrations/2024_10_06_002633_ports_vlans_table_add_port_id_index.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('ports_vlans', function (Blueprint $table) {
+            $table->index('port_id');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('ports_vlans', function (Blueprint $table) {
+            $table->dropIndex('ports_vlans_port_id_index');
+        });
+    }
+};
diff --git a/misc/db_schema.yaml b/misc/db_schema.yaml
index 24eb144ba8..e80df0b0a3 100644
--- a/misc/db_schema.yaml
+++ b/misc/db_schema.yaml
@@ -1794,6 +1794,7 @@ ports_vlans:
   Indexes:
     PRIMARY: { Name: PRIMARY, Columns: [port_vlan_id], Unique: true, Type: BTREE }
     ports_vlans_device_id_port_id_vlan_unique: { Name: ports_vlans_device_id_port_id_vlan_unique, Columns: [device_id, port_id, vlan], Unique: true, Type: BTREE }
+    ports_vlans_port_id_index: { Name: ports_vlans_port_id_index, Columns: [port_id], Unique: false, Type: BTREE }
 port_groups:
   Columns:
     - { Field: id, Type: 'int unsigned', 'Null': false, Extra: auto_increment }