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    <title>topic Hi Moin,Thanks your support.I in Wireless</title>
    <link>https://community.cisco.com/t5/wireless/cisco-prime-infrastructure-2-1-error-disable-alert/m-p/2497591#M35390</link>
    <description>&lt;P&gt;Hi Moin,&lt;/P&gt;&lt;P&gt;Thanks your support.&lt;/P&gt;&lt;P&gt;I concern that is a lot of email&amp;nbsp;&lt;SPAN style="font-size: 14px;"&gt;generate to administrator like below,&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;========================================================================&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;Virtual Domain: ROOT-DOMAIN&amp;nbsp;&lt;/SPAN&gt;&lt;BR style="z-index: 2; color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;" /&gt;&lt;BR style="z-index: 2; color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;" /&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;PI has detected one or more alarms of category Switches and Hubs and severity Critical in Virtual Domain ROOT-DOMAIN&amp;nbsp;&lt;/SPAN&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;for the following items:&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;1. Message: Port 'GigabitEthernet1/0/1' is down on device '192.168.98.186'.&amp;nbsp;&lt;/SPAN&gt;&lt;BR style="z-index: 2; color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;" /&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;2. Message: Port 'GigabitEthernet1/0/10' is down on device '192.168.98.186'.&amp;nbsp;&lt;/SPAN&gt;&lt;BR style="z-index: 2; color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;" /&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;3. Message: Port 'GigabitEthernet1/0/11' is down on device '192.168.98.186'.&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;========================================================================&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;I just interest that which ports down by error-disable features. Could you help for this?&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;Thanks&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;Keith&lt;/SPAN&gt;&lt;/P&gt;</description>
    <pubDate>Tue, 15 Jul 2014 03:31:16 GMT</pubDate>
    <dc:creator>kcchankeith</dc:creator>
    <dc:date>2014-07-15T03:31:16Z</dc:date>
    <item>
      <title>Cisco Prime Infrastructure 2.1 error-disable alert</title>
      <link>https://community.cisco.com/t5/wireless/cisco-prime-infrastructure-2-1-error-disable-alert/m-p/2497589#M35388</link>
      <description>&lt;P&gt;&lt;SPAN style="font-size:14px;"&gt;We have a cisco PI 2.1 managing switches and a lot of switchports have BPDUGuard enabled. When occur error-disable , request send email notification to administrator .&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-size:14px;"&gt;By default, when a port of a switch goes down, the Prime generates alarm for that. (this is a problem, because every laptop disconnection will generate alarm for administrator)&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-size:14px;"&gt;Can i change the alert just for error-disable and how to ?&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-size: 14px;"&gt;Thanks&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Mon, 05 Jul 2021 08:13:22 GMT</pubDate>
      <guid>https://community.cisco.com/t5/wireless/cisco-prime-infrastructure-2-1-error-disable-alert/m-p/2497589#M35388</guid>
      <dc:creator>kcchankeith</dc:creator>
      <dc:date>2021-07-05T08:13:22Z</dc:date>
    </item>
    <item>
      <title>Hide acknowledged alarms—When</title>
      <link>https://community.cisco.com/t5/wireless/cisco-prime-infrastructure-2-1-error-disable-alert/m-p/2497590#M35389</link>
      <description>&lt;P&gt;Hide acknowledged alarms—When the check box is selected, Acknowledged alarms do not appear on the Alarm Summary page. This option is enabled by default. &lt;SPAN style="color: rgb(255, 0, 0);"&gt;Emails are not generated for acknowledged alarms, regardless of severity change.&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color:#000000;"&gt;Please refer:&amp;nbsp;&lt;/SPAN&gt;http://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/infrastructure/2-0/administrator/guide/PIAdminBook/maint_network_health.html#pgfId-1062413&lt;/P&gt;&lt;P&gt;Hope that helps.&lt;/P&gt;&lt;P&gt;Regards,&lt;/P&gt;&lt;P&gt;Moin.&lt;/P&gt;</description>
      <pubDate>Mon, 14 Jul 2014 19:27:56 GMT</pubDate>
      <guid>https://community.cisco.com/t5/wireless/cisco-prime-infrastructure-2-1-error-disable-alert/m-p/2497590#M35389</guid>
      <dc:creator>Moin Ilyas</dc:creator>
      <dc:date>2014-07-14T19:27:56Z</dc:date>
    </item>
    <item>
      <title>Hi Moin,Thanks your support.I</title>
      <link>https://community.cisco.com/t5/wireless/cisco-prime-infrastructure-2-1-error-disable-alert/m-p/2497591#M35390</link>
      <description>&lt;P&gt;Hi Moin,&lt;/P&gt;&lt;P&gt;Thanks your support.&lt;/P&gt;&lt;P&gt;I concern that is a lot of email&amp;nbsp;&lt;SPAN style="font-size: 14px;"&gt;generate to administrator like below,&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;========================================================================&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;Virtual Domain: ROOT-DOMAIN&amp;nbsp;&lt;/SPAN&gt;&lt;BR style="z-index: 2; color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;" /&gt;&lt;BR style="z-index: 2; color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;" /&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;PI has detected one or more alarms of category Switches and Hubs and severity Critical in Virtual Domain ROOT-DOMAIN&amp;nbsp;&lt;/SPAN&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;for the following items:&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;1. Message: Port 'GigabitEthernet1/0/1' is down on device '192.168.98.186'.&amp;nbsp;&lt;/SPAN&gt;&lt;BR style="z-index: 2; color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;" /&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;2. Message: Port 'GigabitEthernet1/0/10' is down on device '192.168.98.186'.&amp;nbsp;&lt;/SPAN&gt;&lt;BR style="z-index: 2; color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;" /&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;3. Message: Port 'GigabitEthernet1/0/11' is down on device '192.168.98.186'.&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;========================================================================&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;I just interest that which ports down by error-disable features. Could you help for this?&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;Thanks&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="color: rgb(0, 0, 0); font-family: monospace; font-size: 12px; line-height: normal;"&gt;Keith&lt;/SPAN&gt;&lt;/P&gt;</description>
      <pubDate>Tue, 15 Jul 2014 03:31:16 GMT</pubDate>
      <guid>https://community.cisco.com/t5/wireless/cisco-prime-infrastructure-2-1-error-disable-alert/m-p/2497591#M35390</guid>
      <dc:creator>kcchankeith</dc:creator>
      <dc:date>2014-07-15T03:31:16Z</dc:date>
    </item>
    <item>
      <title>Causes of ErrdisableThis</title>
      <link>https://community.cisco.com/t5/wireless/cisco-prime-infrastructure-2-1-error-disable-alert/m-p/2497592#M35391</link>
      <description>&lt;H3&gt;&lt;A name="topic3"&gt;Causes of Errdisable&lt;/A&gt;&lt;/H3&gt;&lt;P&gt;This feature was first implemented to handle special collision situations in which the switch detected excessive or late collisions on a port. Excessive collisions occur when a frame is dropped because the switch encounters 16 collisions in a row. Late collisions occur after every device on the wire should have recognized that the wire was in use. Possible causes of these types of errors include:&lt;/P&gt;&lt;UL&gt;&lt;LI&gt;&lt;P&gt;A cable that is out of specification (either too long, the wrong type, or defective)&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;A bad network interface card (NIC) card (with physical problems or driver problems)&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;A port duplex misconfiguration&lt;/P&gt;&lt;P&gt;A port duplex misconfiguration is a common cause of the errors because of failures to negotiate the speed and duplex properly between two directly connected devices (for example, a NIC that connects to a switch). Only half-duplex connections should ever have collisions in a LAN. Because of the carrier sense multiple access (CSMA) nature of Ethernet, collisions are normal for half duplex, as long as the collisions do not exceed a small percentage of traffic.&lt;/P&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;P&gt;There are various reasons for the interface to go into errdisable. The reason can be:&lt;/P&gt;&lt;UL&gt;&lt;LI&gt;&lt;P&gt;Duplex mismatch&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;Port channel misconfiguration&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;BPDU guard violation&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;UniDirectional Link Detection (UDLD) condition&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;Late-collision detection&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;Link-flap detection&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;Security violation&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;Port Aggregation Protocol (PAgP) flap&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;Layer 2 Tunneling Protocol (L2TP) guard&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;DHCP snooping rate-limit&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;Incorrect GBIC / Small Form-Factor Pluggable (SFP) module or cable&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;Address Resolution Protocol (ARP) inspection&lt;/P&gt;&lt;/LI&gt;&lt;LI&gt;&lt;P&gt;Inline power&lt;/P&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;P&gt;&lt;B&gt;Note:&amp;nbsp;&lt;/B&gt;Error-disable detection is enabled for all of these reasons by default. In order to disable error-disable detection, use the &lt;B&gt;no errdisable detect cause&lt;/B&gt; command. The &lt;B&gt;show errdisable detect&lt;/B&gt; command displays the error-disable detection status.&lt;/P&gt;</description>
      <pubDate>Mon, 28 Jul 2014 10:33:05 GMT</pubDate>
      <guid>https://community.cisco.com/t5/wireless/cisco-prime-infrastructure-2-1-error-disable-alert/m-p/2497592#M35391</guid>
      <dc:creator>mohanak</dc:creator>
      <dc:date>2014-07-28T10:33:05Z</dc:date>
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