{"id":15,"date":"2009-07-03T10:39:44","date_gmt":"2009-07-03T09:39:44","guid":{"rendered":"http:\/\/mccltd.net\/blog\/?p=15"},"modified":"2010-08-07T09:48:29","modified_gmt":"2010-08-07T08:48:29","slug":"configuring-remote-span","status":"publish","type":"post","link":"http:\/\/darenmatthews.com\/blog\/?p=15","title":{"rendered":"Configuring Remote SPAN"},"content":{"rendered":"<p><strong>Remote SPAN Configuration<\/strong><strong><\/strong><\/p>\n<p>Remote SPAN allows source ports and destination ports to be located on different switches. It uses a SPAN VLAN to transmit a copy of span data from source across the network to destination. You have to define and allow the SPAN VLAN in all network devices in the path.<br \/>\n<strong>Here&#8217;s how to do it:<\/strong><!--more--><\/p>\n<p><strong>UPDATE:<\/strong><\/p>\n<p>You might want to also try using the capture buffer: <a href=\"http:\/\/darenmatthews.com\/blog\/?p=546\">http:\/\/darenmatthews.com\/blog\/?p=546<\/a><\/p>\n<p>1. Firstly, create a VLAN on each network switches in the path:<br \/>\nSW1(config)# vlan 456<br \/>\nSW1(config-vlan)# remote-span<\/p>\n<p>(VLAN 456 is a remote span VLAN).<\/p>\n<p>2. Setup the SPAN destination port, which is where the sniffer plugged to.<\/p>\n<p>SW1(config)# monitor session 1 source remote vlan 456<br \/>\nSW1(config)# monitor session 1 destination interface gi4\/1<\/p>\n<p>3. If you want to monitor the host on SW2 port gi5\/10 , the RSPAN session could be completed as follows:<\/p>\n<p>SW2(config)# monitor session 1 source interface gi5\/10<br \/>\nSW2(config)# monitor session 1 destination remote vlan 456<\/p>\n<p>Recommended:<\/p>\n<p><a href=\"http:\/\/astore.amazon.co.uk\/mccltd-21\/detail\/1893939995\"><img src=\"http:\/\/ecx.images-amazon.com\/images\/I\/51RYq2ARheL._SL125_.jpg\" alt=\"Wireshark Network Analysis: The Official Wireshark Certified Network Analyst Study Guide\" \/><\/a><\/p>\n<p><a href=\"http:\/\/astore.amazon.co.uk\/mccltd-21\/detail\/1893939995\">Wireshark Network Analysis<\/a><br \/>\nby <span>Laura Chappell<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>How to configure Remote Switch Port Analyser (RSPAN) in Cisco IOS.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[83],"tags":[3,37],"_links":{"self":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/15"}],"collection":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15"}],"version-history":[{"count":8,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/15\/revisions"}],"predecessor-version":[{"id":836,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/15\/revisions\/836"}],"wp:attachment":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}