{"id":388,"date":"2017-01-27T12:03:57","date_gmt":"2017-01-27T12:03:57","guid":{"rendered":"http:\/\/wiki.thomasandsofia.com\/?p=388"},"modified":"2017-02-09T01:22:29","modified_gmt":"2017-02-09T01:22:29","slug":"ccent-6-s01-e28-wan-connectivity","status":"publish","type":"post","link":"https:\/\/wiki.thomasandsofia.com\/?p=388","title":{"rendered":"CCENT 6 S01 E28 \u2013 WAN Connectivity"},"content":{"rendered":"<p>Main Menu<br \/>\n<a href='#abbv'>Abbreviations<\/a><br \/>\nUnderstanding the categories of WAN connections<br \/>\nLayer 2 WAN Protocols<br \/>\nConfiguring HDLC and PPP WAN Connections<\/p>\n<p><a name='abbv'>&nbsp;<\/a><\/p>\n<h2>Abbreviations<\/h2>\n<p>CSU\/DSU: Channel Service Unit\/Data Service Unit<br \/>\nDCE \/ DTE: Data Communication Equipment (clock)\/ Data Terminal Equipment<br \/>\nDLCI: (Delsy) Data Link Connection Identifier<br \/>\nHDLC: High-level Data Link Control (Cisco Proprietary)<br \/>\nPPP: Point to Point Protocol<br \/>\nWAN: Wide Area Network<\/p>\n<h3>Definition<\/h3>\n<p>Wan provides connectivity between offices<\/p>\n<ul>\n<li>Could be within same city<\/li>\n<li>Could be several thousands of miles apart.<\/li>\n<\/ul>\n<p>Categories of WAN Connectivity<\/p>\n<ul>\n<li>Layer 1: Instead of RJ45, WAN uses Serial physical connections<\/li>\n<li>Layer 2: No MAC addresses, but uses\n<ul>\n<li>Frame Relay: Not just a connection type, but also a protocol. DLCI (Delsy) Datalink Connection Identifier)<\/li>\n<li>ATM, PPP, HDLC, and many more.<\/li>\n<\/ul>\n<\/li>\n<li>Primary Considerations\n<ul>\n<li>Price<\/li>\n<li>Speed<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Styles of WAN Connections<\/h3>\n<p><strong>Leased Lines:<\/strong> Dedicated Bandwidth between locations<\/p>\n<ul>\n<li>T1 CAS\n<ul>\n<li>T1= 1.544 Mbps<\/li>\n<li>Dedicated bandwidth<\/li>\n<li>Most expensive<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>Circuit Switched:<\/strong> On-demand Bandwidth between locations<\/p>\n<ul>\n<li>Dial-Up Modems<\/li>\n<li>ISDN<\/li>\n<li>Low Price<\/li>\n<li>Low Bandwidth<\/li>\n<\/ul>\n<p><strong>Packet Switched:<\/strong> Shared, but guaranteed, bandwidth between locations<\/p>\n<ul>\n<li>Frame Relay<\/li>\n<li>ATM<\/li>\n<li>X25 (older, no common in US)<\/li>\n<\/ul>\n<h2>Configuring Leased Line Connections<\/h2>\n<p>These are Layer 2 Protocols<\/p>\n<h3>HDLC: Highlevel Data Link Control<\/h3>\n<ul>\n<li>Cisco Proprietary (Both sides must be Cisco)<\/li>\n<li>Plug it in and it works.<\/li>\n<\/ul>\n<h3>PPP: Point to Point Protocol<\/h3>\n<ul>\n<li>Most common used.  Works with all equipment mfgs<\/li>\n<\/ul>\n<h4>Configure PPP<\/h4>\n<pre>r1(config)#interface serial 0\/1\r\nr1(config-if)#encapsulation ppp\r\nr1(config-if)#clock<\/pre>\n<pre>r2(config)#interface serial 0\/0\r\nr2(config-if)#encapsulation ppp<\/pre>\n<h2>Show Commands<\/h2>\n<pre>show controllers serial 0\/0<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Main Menu Abbreviations Understanding the categories of WAN connections Layer 2 WAN Protocols Configuring HDLC and PPP WAN Connections &nbsp; Abbreviations CSU\/DSU: Channel Service Unit\/Data Service Unit DCE \/ DTE: Data Communication Equipment (clock)\/ Data Terminal Equipment DLCI: (Delsy) Data Link Connection Identifier HDLC: High-level Data Link Control (Cisco Proprietary) PPP: Point to Point Protocol ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/wiki.thomasandsofia.com\/?p=388\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-388","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts\/388","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=388"}],"version-history":[{"count":4,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts\/388\/revisions"}],"predecessor-version":[{"id":393,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts\/388\/revisions\/393"}],"wp:attachment":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}