{"id":4476,"date":"2019-06-26T22:25:27","date_gmt":"2019-06-26T14:25:27","guid":{"rendered":"https:\/\/www.alfredivy.per.sg\/blogger\/?p=4476"},"modified":"2019-06-26T22:28:39","modified_gmt":"2019-06-26T14:28:39","slug":"testing-e1-links-with-bert","status":"publish","type":"post","link":"https:\/\/www.alfredivy.sg\/blogger\/2019\/06\/testing-e1-links-with-bert\/","title":{"rendered":"Testing E1 links with BERT"},"content":{"rendered":"\n<p>Testing E1 links with BERT, instead of installing a loopback and furiously refreshing to check on the counters.<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>If you can loop back the E1 link, a more thorough test is to run a Bit Error Rate Test or BERT. This is available in both older and new generation Cisco VMIC and NIM WAN cards.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Config terminal<br>Controller E1 Shelf\/slot\/port<br>bert pattern {0s| 1s| 2^15| 2^20| 2^23| alt-0-1| qrss} interval minutes <br>exit<br>exit<\/p><\/blockquote>\n\n\n\n<p> To view the test performance, use the show controller command.  The first few lines contain the important summary information about the number of bits and the error bits if any.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>show controller E1 shelf\/slot\/port<\/p><\/blockquote>\n\n\n\n<p><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/collateral\/routers\/4000-series-integrated-services-routers-isr\/data_sheet_c78-728308.html\">NIM link<\/a>  <a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/collateral\/routers\/3600-series-multiservice-platforms\/product_data_sheet09186a0080091b9c.html\">VWIC link<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Testing E1 links with BERT, instead of installing a loopback and furiously refreshing to check on the counters.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[246,23],"tags":[440,354,494],"class_list":["post-4476","post","type-post","status-publish","format-standard","hentry","category-networks","category-work","tag-cisco","tag-ios","tag-wan"],"_links":{"self":[{"href":"https:\/\/www.alfredivy.sg\/blogger\/wp-json\/wp\/v2\/posts\/4476","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alfredivy.sg\/blogger\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alfredivy.sg\/blogger\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alfredivy.sg\/blogger\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alfredivy.sg\/blogger\/wp-json\/wp\/v2\/comments?post=4476"}],"version-history":[{"count":2,"href":"https:\/\/www.alfredivy.sg\/blogger\/wp-json\/wp\/v2\/posts\/4476\/revisions"}],"predecessor-version":[{"id":4479,"href":"https:\/\/www.alfredivy.sg\/blogger\/wp-json\/wp\/v2\/posts\/4476\/revisions\/4479"}],"wp:attachment":[{"href":"https:\/\/www.alfredivy.sg\/blogger\/wp-json\/wp\/v2\/media?parent=4476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alfredivy.sg\/blogger\/wp-json\/wp\/v2\/categories?post=4476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alfredivy.sg\/blogger\/wp-json\/wp\/v2\/tags?post=4476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}