{"id":98,"date":"2025-02-24T18:07:53","date_gmt":"2025-02-24T18:07:53","guid":{"rendered":"https:\/\/www.bgptrace.com\/blog\/?p=98"},"modified":"2025-02-24T18:07:53","modified_gmt":"2025-02-24T18:07:53","slug":"how-do-you-troubleshoot-a-network-problem-cabling-configuration","status":"publish","type":"post","link":"https:\/\/www.bgptrace.com\/blog\/?p=98","title":{"rendered":"How do you troubleshoot a network problem? Cabling? Configuration?"},"content":{"rendered":"\n<p>As a Wide Area Network (WAN), the circuit provided by telecom backhaul between two endpoints\u2014whether it&#8217;s point-to-point between two sites (EVPL, SDH) or customer site to provider PE (Internet, IPVPN, VPLS, etc.)\u2014should be connected to the provider\u2019s equipment or router devices to deliver the service. If you\u2019re referring to dark fiber in a limited area&#8230; um&#8230; okay, next.<\/p>\n\n\n\n<p>How do you verify the circuit service? Check your site router configuration? Check your IP routing?<\/p>\n\n\n\n<p>The basic mindset: I believe we should start by checking the cabling. Yes, Layer 1, isn\u2019t it?<\/p>\n\n\n\n<p>If your port is UP and able to send and receive packets, WELL, at least confirm both endpoint IP addresses and perform a ping test. (Yes, a PING test\u2014please don\u2019t tell me you don\u2019t know what PING is.)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"168\" src=\"https:\/\/www.bgptrace.com\/blog\/wp-content\/uploads\/2025\/02\/image-12.png\" alt=\"\" class=\"wp-image-99\" style=\"width:287px;height:auto\"\/><\/figure>\n\n\n\n<p>PIC from #Google<\/p>\n\n\n\n<p>From past experience, field engineers often argue that the device configuration is incorrect, but guess what? The issue ends up being the WRONG port connected.<\/p>\n\n\n\n<p>Therefore, HOW IMPORTANT IS PHOTO CAPTURE!!!!!!!<\/p>\n\n\n\n<p>What if the ping fails? Yes, it happens\u2014cable quality issues, loose connectors, poor signaling, etc.<\/p>\n\n\n\n<p>Have you ever checked the DUPLEX setting????????????? Confirm both ends have the SAME duplex setting!!<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"264\" height=\"191\" src=\"https:\/\/www.bgptrace.com\/blog\/wp-content\/uploads\/2025\/02\/image-13.png\" alt=\"\" class=\"wp-image-100\"\/><\/figure>\n\n\n\n<p>PIC from Cisco Press<\/p>\n\n\n\n<p>Then you\u2019ll mention bandwidth: &#8220;Speedtest.com, huh? Why can\u2019t I get full bandwidth?!&#8221;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"365\" height=\"138\" src=\"https:\/\/www.bgptrace.com\/blog\/wp-content\/uploads\/2025\/02\/image-15.png\" alt=\"\" class=\"wp-image-105\"\/><\/figure>\n\n\n\n<p>Please understand: we cannot guarantee a test server will allocate all resources for your test. The Internet is unmanaged, and you need to be aware of overhead and your device\u2019s processing power. Do you really think your mobile can hit 2Gbps over Wi-Fi, bro?<\/p>\n\n\n\n<p>For standard testing, running tests between the client site and the ISP backhaul provides a great reference for your service quality\u2014this is typically done during installation.<\/p>\n\n\n\n<p>But anyway&#8230; PLEASE confirm the cabling is correct before spending too much time checking the configuration. Start with Layer 1 first!<\/p>\n\n\n\n<p>#circuit #physical #cabling #ISP #provider #Internet #EVPL #IPLC #IPVPN #P2P #IP #testing #ping #bandwidth #speedtest #traffic #packetlost #duplexing #router #WIFI   <\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As a Wide Area Network (WAN), the circuit provided by telecom backhaul between two endpoints\u2014whether it&#8217;s point-to-point between two sites (EVPL, SDH) or customer site to provider PE (Internet, IPVPN, VPLS, etc.)\u2014should be connected to the provider\u2019s equipment or router devices to deliver the service. If you\u2019re referring to dark fiber in a limited area&#8230; &hellip; <a href=\"https:\/\/www.bgptrace.com\/blog\/?p=98\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;How do you troubleshoot a network problem? Cabling? Configuration?&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[108,121,21,109,81,10,122],"class_list":["post-98","post","type-post","status-publish","format-standard","hentry","category-internet","tag-circuit","tag-duplexing","tag-latency","tag-physical","tag-router","tag-routing","tag-wifi"],"_links":{"self":[{"href":"https:\/\/www.bgptrace.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/98","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bgptrace.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bgptrace.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bgptrace.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bgptrace.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=98"}],"version-history":[{"count":6,"href":"https:\/\/www.bgptrace.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/98\/revisions"}],"predecessor-version":[{"id":108,"href":"https:\/\/www.bgptrace.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/98\/revisions\/108"}],"wp:attachment":[{"href":"https:\/\/www.bgptrace.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=98"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bgptrace.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=98"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bgptrace.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=98"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}