{"id":9342,"date":"2026-08-09T15:38:01","date_gmt":"2026-08-09T13:38:01","guid":{"rendered":"https:\/\/www.lukaswojcik.com\/blog\/narzedzia\/unifi-iot-vlan-subnet-cidr-calculator\/"},"modified":"2026-08-09T15:38:01","modified_gmt":"2026-08-09T13:38:01","slug":"unifi-iot-vlan-subnet-cidr-calculator","status":"publish","type":"page","link":"https:\/\/www.lukaswojcik.com\/blog\/pl\/narzedzia\/unifi-iot-vlan-subnet-cidr-calculator\/","title":{"rendered":"Kalkulator podsieci i CIDR dla sieci VLAN UniFi oraz IoT"},"content":{"rendered":"<div class=\"gtm-analyser-container\" style=\"background: var(--bg-panel, #1e1e24); padding: 25px; border-radius: 8px; border: 1px solid var(--border, #2a2a35);\">\n<p style=\"color: var(--text-secondary); margin-bottom: 20px;\">\n        Oblicza zakresy adres\u00f3w IP, adresy rozg\u0142oszeniowe oraz oddzielne pule adres\u00f3w statycznych i przydzielanych przez DHCP na potrzeby izolacji sieci domowej.\n    <\/p>\n<div style=\"display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 20px;\">\n<div style=\"flex: 1; min-width: 260px;\">\n            <label style=\"color: var(--text-secondary); display: block; font-size: 0.85rem; margin-bottom: 5px;\">Blok CIDR sieci VLAN:<\/label><br \/>\n            <input type=\"text\" id=\"cidr-input\" value=\"192.168.50.0\/24\" class=\"form-control\" style=\"width: 100%; padding: 12px; background: var(--bg-body); border: 1px solid var(--border); color: var(--text-primary); border-radius: 6px; font-family: monospace;\">\n        <\/div>\n<p>        <button id=\"calc-cidr-btn\" class=\"button\" style=\"background: var(--accent); color: #0b1114; border: none; padding: 12px 24px; border-radius: 6px; font-weight: 700; cursor: pointer;\">Oblicz podsie\u0107<\/button>\n    <\/div>\n<div id=\"cidr-results\"><\/div>\n<\/div>\n<p><script>\ndocument.getElementById(\"calc-cidr-btn\").addEventListener(\"click\", () => {\n    const input = document.getElementById(\"cidr-input\").value.trim();\n    const parts = input.split(\"\/\");\n    const results = document.getElementById(\"cidr-results\");<\/p>\n<p>    if (parts.length !== 2 || isNaN(parts[1]) || parts[1] < 16 || parts[1] > 30) {\n        results.innerHTML = \"<\/p>\n<p style='color:#ff6b6b;'>Podaj prawid\u0142owy blok CIDR IPv4 z zakresu od \/16 do \/30 (np. 192.168.50.0\/24).<\/p>\n<p>\";\n        return;\n    }<\/p>\n<p>    const ip = parts[0].split(\".\").map(Number);\n    const maskBits = parseInt(parts[1], 10);\n    const hostBits = 32 - maskBits;\n    const totalHosts = Math.pow(2, hostBits);\n    const usableHosts = totalHosts - 2;<\/p>\n<p>    const ipNum = ip[0] * 16777216 + ip[1] * 65536 + ip[2] * 256 + ip[3];\n    const netNum = Math.floor(ipNum \/ totalHosts) * totalHosts;\n    const broadNum = netNum + totalHosts - 1;<\/p>\n<p>    const numToIp = (num) => {\n        const o1 = Math.floor(num \/ 16777216) % 256;\n        const o2 = Math.floor(num \/ 65536) % 256;\n        const o3 = Math.floor(num \/ 256) % 256;\n        const o4 = num % 256;\n        return [o1, o2, o3, o4].join(\".\");\n    };<\/p>\n<p>    const netIp = numToIp(netNum);\n    const broadIp = numToIp(broadNum);\n    const firstIp = numToIp(netNum + 1);\n    const secondIp = numToIp(netNum + 2);\n    const staticStart = numToIp(netNum + 10);\n    const staticEnd = numToIp(netNum + 50);\n    const dhcpStart = numToIp(netNum + 100);\n    const dhcpEnd = numToIp(broadNum - 5);<\/p>\n<p>    results.innerHTML = [\n        \"<\/p>\n<div style='display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-bottom: 20px;'>\",\n        \"    <\/p>\n<div style='background: var(--bg-body); padding: 15px; border-radius: 6px; border: 1px solid var(--border);'>\",\n        \"        <span style='color: var(--text-secondary); font-size: 0.85rem; display: block;'>Adres sieci<\/span>\",\n        \"        <strong style='color: var(--accent); font-size: 1.1rem; font-family: monospace;'>\" + netIp + \"<\/strong>\",\n        \"    <\/div>\n<p>\",\n        \"    <\/p>\n<div style='background: var(--bg-body); padding: 15px; border-radius: 6px; border: 1px solid var(--border);'>\",\n        \"        <span style='color: var(--text-secondary); font-size: 0.85rem; display: block;'>Adres rozg\u0142oszeniowy<\/span>\",\n        \"        <strong style='color: var(--accent); font-size: 1.1rem; font-family: monospace;'>\" + broadIp + \"<\/strong>\",\n        \"    <\/div>\n<p>\",\n        \"    <\/p>\n<div style='background: var(--bg-body); padding: 15px; border-radius: 6px; border: 1px solid var(--border);'>\",\n        \"        <span style='color: var(--text-secondary); font-size: 0.85rem; display: block;'>U\u017cyteczny zakres host\u00f3w<\/span>\",\n        \"        <strong style='color: #51cf66; font-size: 1rem; font-family: monospace;'>\" + firstIp + \" - \" + numToIp(broadNum - 1) + \"<\/strong>\",\n        \"    <\/div>\n<p>\",\n        \"    <\/p>\n<div style='background: var(--bg-body); padding: 15px; border-radius: 6px; border: 1px solid var(--border);'>\",\n        \"        <span style='color: var(--text-secondary); font-size: 0.85rem; display: block;'>\u0141\u0105czna liczba host\u00f3w<\/span>\",\n        \"        <strong style='color: var(--text-primary); font-size: 1.1rem;'>\" + usableHosts + \"<\/strong>\",\n        \"    <\/div>\n<p>\",\n        \"<\/p><\/div>\n<p>\",\n        \"<\/p>\n<h4 style='color: var(--accent); margin-bottom: 10px;'>Plan segmentacji sieci UniFi<\/h4>\n<p>\",\n        \"<\/p>\n<table style='width: 100%; border-collapse: collapse; background: var(--bg-body); border-radius: 6px; overflow: hidden;'>\",\n        \"    <\/p>\n<tr style='border-bottom: 1px solid var(--border);'>\n<td style='padding: 10px; color: var(--text-secondary);'>UniFi Security Gateway \/ router<\/td>\n<td style='padding: 10px; color: #51cf66; font-family: monospace;'>\" + firstIp + \"<\/td>\n<\/tr>\n<p>\",\n        \"    <\/p>\n<tr style='border-bottom: 1px solid var(--border);'>\n<td style='padding: 10px; color: var(--text-secondary);'>Zarz\u0105dzalny prze\u0142\u0105cznik agreguj\u0105cy<\/td>\n<td style='padding: 10px; color: #51cf66; font-family: monospace;'>\" + secondIp + \"<\/td>\n<\/tr>\n<p>\",\n        \"    <\/p>\n<tr style='border-bottom: 1px solid var(--border);'>\n<td style='padding: 10px; color: var(--text-secondary);'>Zalecane adresy statyczne (serwery\/NVR)<\/td>\n<td style='padding: 10px; color: var(--accent); font-family: monospace;'>\" + staticStart + \" - \" + staticEnd + \"<\/td>\n<\/tr>\n<p>\",\n        \"    <\/p>\n<tr>\n<td style='padding: 10px; color: var(--text-secondary);'>Pula DHCP dla IoT (kamery\/czujniki)<\/td>\n<td style='padding: 10px; color: var(--text-primary); font-family: monospace;'>\" + dhcpStart + \" - \" + dhcpEnd + \"<\/td>\n<\/tr>\n<p>\",\n        \"<\/table>\n<p>\"\n    ].join(\"\");\n});\ndocument.getElementById(\"calc-cidr-btn\").click();\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Oblicza u\u017cyteczne zakresy adres\u00f3w IP, adresy rozg\u0142oszeniowe i podzia\u0142 sieci domowej na segmenty VLAN.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":9284,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-tool-base.php","meta":{"footnotes":""},"class_list":["post-9342","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Kalkulator podsieci i CIDR dla sieci VLAN UniFi oraz IoT - 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