{"id":865,"date":"2014-07-17T12:04:48","date_gmt":"2014-07-17T12:04:48","guid":{"rendered":"https:\/\/fir3netwp.gmsrrpobkbd.com\/2014\/07\/17\/gtm-why-does-the-monitor-status-change-to-down-after-a-single-probe-failure\/"},"modified":"2023-01-06T16:43:08","modified_gmt":"2023-01-06T16:43:08","slug":"gtm-why-does-the-monitor-status-change-to-down-after-a-single-probe-failure","status":"publish","type":"post","link":"https:\/\/www.fir3net.com\/Loadbalancers\/F5-BIG-IP\/gtm-why-does-the-monitor-status-change-to-down-after-a-single-probe-failure.html","title":{"rendered":"GTM Monitor Marked Down After a Single Failure"},"content":{"rendered":"<h2>Issue<\/h2>\n<p>You may observe the GTM marking the monitor as down even though only a single probe failure has occurred and the timeout not been reached.<\/p>\n<h2>Reason<\/h2>\n<p>When configuring a monitor there are various conditions that are considered by the GTM as a down response. This means that the GTM will mark the monitor as down rather then wait for the monitor timeout to exceed.<\/p>\n<p>These conditions are :<\/p>\n<ul>\n<li><strong>All Monitors<\/strong> &#8211; if a RST is received or if there is no response after the 3WHS.<\/li>\n<li><strong>HTTP Monitors (without receive string)<\/strong> &#8211; If a response is not received within the probe timeout period. Note that 4xx and 5xx responses are considered valid.<\/li>\n<li><strong>HTTP Monitors (with receive string)<\/strong> &#8211; If the response does not contain the receive string. Or if the receive string is not received within the probe timeout period.<\/li>\n<\/ul>\n<p>To instruct the GTM to ignore these down responses, and wait until the monitor timeout is reached before marking the monitor as down the option &#8216;Ignore-down-response&#8217; is enabled.<\/p>\n<p>Further Information : <a href=\"http:\/\/support.f5.com\/kb\/en-us\/solutions\/public\/8000\/100\/sol8170.html\">http:\/\/support.f5.com\/kb\/en-us\/solutions\/public\/8000\/100\/sol8170.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Issue You may observe the GTM marking the monitor as down even though only a single probe failure has occurred and the timeout not been reached. Reason When configuring a monitor there are various conditions that are considered by the GTM as a down response. This means that the GTM will mark the monitor as &#8230; <a title=\"GTM Monitor Marked Down After a Single Failure\" class=\"read-more\" href=\"https:\/\/www.fir3net.com\/Loadbalancers\/F5-BIG-IP\/gtm-why-does-the-monitor-status-change-to-down-after-a-single-probe-failure.html\" aria-label=\"Read more about GTM Monitor Marked Down After a Single Failure\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":864,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>GTM Monitor Marked Down After a Single Failure - Fir3net<\/title>\n<meta name=\"description\" content=\"Issue You may observe the GTM marking the monitor as down even though only a single probe failure has occurred and the timeout not been reached. 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