{"id":586,"date":"2015-01-09T11:26:03","date_gmt":"2015-01-09T10:26:03","guid":{"rendered":"http:\/\/www.netnea.com\/cms\/?p=586"},"modified":"2015-10-17T21:55:05","modified_gmt":"2015-10-17T19:55:05","slug":"netdisco-with-snmp-v3-and-cisco","status":"publish","type":"post","link":"https:\/\/www.netnea.com\/cms\/2015\/01\/09\/netdisco-with-snmp-v3-and-cisco\/","title":{"rendered":"Netdisco with SNMP V3 and Cisco"},"content":{"rendered":"<p>If you change Cisco switches from SNMP V1\/2 to V3, it may go unnoticed that part of the SNMP polling in Netdisco stops working. Specifically, the collection of <strong>per-VLAN MAC address tables<\/strong> will fail, with authorization errors in the macsuck log. Additional snmp-server config commands on the switch are required to enable access to the per-VLAN \/ per-context MAC address table. On switches with newer IOS releases, a single<\/p>\n<pre>snmp-server group v3group v3 auth context vlan- match prefix<\/pre>\n<p>will do the job (replace <em>v3group<\/em> with the local group used for the SNMP V3 user). On older switches, the <em>match prefix<\/em> wildcard is not available, and the command needs to be issued for each VLAN configured on the switch. The command <em>show snmp context<\/em> can be used to list the configured VLAN&#8217;s.<\/p>\n<p>&nbsp;<\/p>\n<p>More info:<\/p>\n<p>https:\/\/supportforums.cisco.com\/discussion\/10633811\/bridge-mib-snmp-v3<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you change Cisco switches from SNMP V1\/2 to V3, it may go unnoticed that part of the SNMP polling in Netdisco stops working. Specifically, the collection of per-VLAN MAC address tables will fail, with authorization errors in the macsuck log. Additional snmp-server config commands on the switch are required to enable access to the [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":{"0":"post-586","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-nms","7":"czr-hentry"},"_links":{"self":[{"href":"https:\/\/www.netnea.com\/cms\/wp-json\/wp\/v2\/posts\/586","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.netnea.com\/cms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.netnea.com\/cms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.netnea.com\/cms\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.netnea.com\/cms\/wp-json\/wp\/v2\/comments?post=586"}],"version-history":[{"count":5,"href":"https:\/\/www.netnea.com\/cms\/wp-json\/wp\/v2\/posts\/586\/revisions"}],"predecessor-version":[{"id":647,"href":"https:\/\/www.netnea.com\/cms\/wp-json\/wp\/v2\/posts\/586\/revisions\/647"}],"wp:attachment":[{"href":"https:\/\/www.netnea.com\/cms\/wp-json\/wp\/v2\/media?parent=586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.netnea.com\/cms\/wp-json\/wp\/v2\/categories?post=586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.netnea.com\/cms\/wp-json\/wp\/v2\/tags?post=586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}