{"id":2430,"date":"2015-11-05T11:48:16","date_gmt":"2015-11-05T16:48:16","guid":{"rendered":"http:\/\/192.168.2.166\/~webapp\/support\/faq\/wordpress\/?p=2430"},"modified":"2025-01-06T13:06:13","modified_gmt":"2025-01-06T18:06:13","slug":"troubleshoot-discovery-managed-switch","status":"publish","type":"post","link":"https:\/\/avtech.com\/articles\/2430\/troubleshoot-discovery-managed-switch\/","title":{"rendered":"How To Troubleshoot Discovery Over A Managed Switch"},"content":{"rendered":"\n<p>Managed switches, a more powerful version of the basic network switch, can screen traffic on certain ports or protocols and may interfere with Room Alert communications.<\/p>\n\n\n\n<p>Depending on how your managed switch is configured, a Room Alert Monitor connected to it may periodically become inaccessible on your network. In some cases, the IP address of the unit still responds to pings, and, typically, power-cycling the unit resolves the issue temporarily.<\/p>\n\n\n\n<p>You may modify settings on the Room Alert itself to assist with this issue; you may also modify settings on your managed switch.<\/p>\n\n\n<div class=\"su-accordion su-u-trim\">\n\n\n<div class=\"su-spoiler su-spoiler-style-fancy su-spoiler-icon-plus su-spoiler-closed\" data-anchor=\"ethernet_configuration\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>Modify your Room Alert's Ethernet Configuration settings<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">\n\n\n\n<p>The instructions below show you how to change your Room Alert&#8217;s Ethernet configuration in the <strong>Settings<\/strong>&#8211;&gt;<strong>Network<\/strong> tab to the following:<\/p>\n\n\n<div class=\"su-note\"  style=\"border-color:#d1d4d8;border-radius:5px;-moz-border-radius:5px;-webkit-border-radius:5px;\"><div class=\"su-note-inner su-u-clearfix su-u-trim\" style=\"background-color:#ebeef2;border-color:#ffffff;color:#000000;border-radius:5px;-moz-border-radius:5px;-webkit-border-radius:5px;\">\n\n\n\n<h4 class=\"wp-block-heading\">Ethernet Configuration<\/h4>\n\n\n\n<ul><li><strong>MTU Size:<\/strong> 512 (Note that this is the lowest setting for the maximum transmission unit size.)<ul><li><em>This setting cannot be manually changed on Room Alert S models.<\/em><\/li><\/ul><\/li><li><strong>Auto Negotiate:<\/strong> Unchecked<\/li><li><strong>Speed<\/strong>: 100 Mbps<\/li><li><strong>Duplex<\/strong>: Full<\/li><li><strong>Gratuitous ARP Broadcasts:<\/strong> Unchecked<\/li><\/ul>\n\n\n<\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">To change your settings:<\/h4>\n\n\n\n<ol><li>First, open your Room Alert Monitor&#8217;s web interface. This FAQ shows you how: <a rel=\"noreferrer noopener\" aria-label=\"How To Open Your Room Alert Monitor's Web Interface (opens in a new tab)\" href=\"https:\/\/avtech.com\/articles\/13255\/how-to-open-your-room-alert-monitors-built-in-web-interface\/\" target=\"_blank\">How To Open Your Room Alert Monitor&#8217;s Web Interface<\/a>.<\/li><li>Then navigate to <strong>Settings<\/strong>&#8211;&gt;<strong>Network<\/strong>&#8211;&gt;<strong>Ethernet Configuration<\/strong> . . .<\/li><\/ol>\n\n\n<div class=\"su-tabs su-tabs-style-default su-tabs-mobile-stack\" data-active=\"1\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-tabs-nav\"><span class=\"\" data-anchor=\"current_model\" data-url=\"\" data-target=\"blank\" tabindex=\"0\" role=\"button\">. . . on a current Room Alert model<\/span><span class=\"\" data-anchor=\"legacy_model\" data-url=\"\" data-target=\"blank\" tabindex=\"0\" role=\"button\">. . . on a legacy Room Alert model<\/span><\/div><div class=\"su-tabs-panes\"><div class=\"su-tabs-pane su-u-clearfix su-u-trim\" data-title=\". . . on a current Room Alert model\">\n\n\n\n<ul><li>Select&nbsp;<strong>Settings<\/strong>&nbsp;in the navigation bar to the left.<\/li><li>Then select <strong>Network<\/strong>&nbsp;from the options below <em>Settings<\/em>.<\/li><li>In the <em>Network Settings<\/em> page, under<em> Ethernet Configuratio<\/em>n, enter the settings listed above for <em>MTU Size<\/em>, <em>Auto Negotiate<\/em>, etc..<\/li><li>Select <strong>Save Settings<\/strong>&nbsp;at the top or bottom of the screen. Your Room Alert Monitor will reboot with you new settings.<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/avtech.com\/articles\/wp-content\/uploads\/2019\/01\/Ethernet_Configuration_Managed_Switch_Current_Firmware-1024x648.png\" alt=\"\" class=\"wp-image-13844\" width=\"768\" height=\"486\" srcset=\"https:\/\/avtech.com\/articles\/wp-content\/uploads\/2019\/01\/Ethernet_Configuration_Managed_Switch_Current_Firmware-1024x648.png 1024w, https:\/\/avtech.com\/articles\/wp-content\/uploads\/2019\/01\/Ethernet_Configuration_Managed_Switch_Current_Firmware-300x190.png 300w, https:\/\/avtech.com\/articles\/wp-content\/uploads\/2019\/01\/Ethernet_Configuration_Managed_Switch_Current_Firmware-768x486.png 768w, https:\/\/avtech.com\/articles\/wp-content\/uploads\/2019\/01\/Ethernet_Configuration_Managed_Switch_Current_Firmware.png 1185w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/figure>\n\n\n<\/div>\n<div class=\"su-tabs-pane su-u-clearfix su-u-trim\" data-title=\". . . on a legacy Room Alert model\">\n\n\n\n<ul><li>Select&nbsp;<strong>Settings<\/strong>&nbsp;in the navigation bar at the top of the screen.<\/li><li>Then select <strong>Network<\/strong>&nbsp;from the navigation bar to the left.<\/li><li>In the <em>Network Settings<\/em> page, under <em>Ethernet Configuration<\/em>,&nbsp;enter&nbsp;the&nbsp;settings&nbsp;listed above for <em>MTU Size<\/em>, <em>Auto Negotiate<\/em>, etc..<\/li><li>Select <strong>Accept Changes<\/strong> at the bottom of the page to temporarily save your settings.<\/li><li>Then select <strong>Save Settings<\/strong> in the navigation bar to the left. Your unit will reboot with its new settings.<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/avtech.com\/articles\/wp-content\/uploads\/2015\/06\/Ethernet_Configuration_Managed_Switch.jpg\" alt=\"\" class=\"wp-image-3358\"\/><\/figure>\n\n\n<\/div><\/div><\/div>\n\n\n<\/div><\/div>\n\n\n<div class=\"su-spoiler su-spoiler-style-fancy su-spoiler-icon-plus su-spoiler-closed\" data-anchor=\"managed_switch\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>Modify the settings on your managed switch<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">\n\n\n\n<p>Adjust any settings on the switch that might interfere with Room Alert traffic. <\/p>\n\n\n\n<ul><li>Configure the necessary port as unmanaged if possible: <a href=\"https:\/\/avtech.com\/articles\/14315\" target=\"_blank\" rel=\"noreferrer noopener\">List Of Ports Required By Room Alert Products<\/a>.<\/li><li>Set the switch port speed to 100 \/ Full Duplex.<\/li><\/ul>\n\n\n<\/div><\/div>\n\n\n<\/div>\n\n\n\n<p>Another option that may mitigate the issue is to place a hub in between the Room Alert Monitor and the managed switch. This way, the Room Alert Monitor negotiates with the hub rather than the managed switch.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Managed switches, a more powerful version of the basic network switch, can screen traffic on certain ports or protocols and may interfere with Room Alert communications. Depending on how your managed switch is configured, a Room Alert Monitor connected to it may periodically become inaccessible on your network. In some cases, the IP address of [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[2],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/avtech.com\/articles\/2430\/troubleshoot-discovery-managed-switch\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How To Troubleshoot Discovery Over A Managed Switch - AVTECH\" \/>\n<meta property=\"og:description\" content=\"Managed switches, a more powerful version of the basic network switch, can screen traffic on certain ports or protocols and may interfere with Room Alert communications. 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