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    <title>topic Erro:Kern.IPv4Mc.Error - Slot-1: Unable to Add IPmc vlan in ExtremeSwitching (EXOS/Switch Engine)</title>
    <link>https://community.extremenetworks.com/t5/extremeswitching-exos-switch/erro-kern-ipv4mc-error-slot-1-unable-to-add-ipmc-vlan/m-p/91764#M21364</link>
    <description>Currently using ExtremeXOS version 15.3.5.2&lt;BR /&gt;
The problem we have is an abundant flow of error messages into the log:&lt;BR /&gt;
&lt;BR /&gt;
&lt;DIV class="threadCode"&gt;&lt;B&gt;code:&lt;/B&gt;&lt;PRE spellcheck="false"&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:23 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:22 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:21 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:20 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:17 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:15 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:14 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:12 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:11 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:10 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;&lt;/PRE&gt;&lt;/DIV&gt;&lt;BR /&gt;
&lt;BR /&gt;
As far as impact goes, no customer has reported any issues , but as you can see, the logging gets cluttered by these messages.&lt;BR /&gt;
&lt;BR /&gt;
The configuration regarding IPMC:&lt;BR /&gt;
&lt;DIV class="threadCode"&gt;&lt;B&gt;code:&lt;/B&gt;&lt;PRE spellcheck="false"&gt;#&lt;BR /&gt;# Module mcmgr configuration.&lt;BR /&gt;#&lt;BR /&gt;configure forwarding ipmc lookup-key group-vlan&lt;BR /&gt;&lt;/PRE&gt;&lt;/DIV&gt;&lt;BR /&gt;
&lt;BR /&gt;
I've checked multiple topics and I can't quite figure out why this is going on. If there's a solution without rebooting the stack, that would be ideal.&lt;BR /&gt;
&lt;BR /&gt;
Any help would be apreciated!</description>
    <pubDate>Mon, 28 Jan 2019 21:02:12 GMT</pubDate>
    <dc:creator>Robert-H2B</dc:creator>
    <dc:date>2019-01-28T21:02:12Z</dc:date>
    <item>
      <title>Erro:Kern.IPv4Mc.Error - Slot-1: Unable to Add IPmc vlan</title>
      <link>https://community.extremenetworks.com/t5/extremeswitching-exos-switch/erro-kern-ipv4mc-error-slot-1-unable-to-add-ipmc-vlan/m-p/91764#M21364</link>
      <description>Currently using ExtremeXOS version 15.3.5.2&lt;BR /&gt;
The problem we have is an abundant flow of error messages into the log:&lt;BR /&gt;
&lt;BR /&gt;
&lt;DIV class="threadCode"&gt;&lt;B&gt;code:&lt;/B&gt;&lt;PRE spellcheck="false"&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:23 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:22 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:21 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:20 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:17 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:15 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:14 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:12 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:11 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;01/28/2019 13:27:06.10  Slot-1: Unable to Add IPmc vlan 3030 for 1:10 s,G=0,e0000012 IPMC 0, unit 0 Entry exists&lt;BR /&gt;&lt;/PRE&gt;&lt;/DIV&gt;&lt;BR /&gt;
&lt;BR /&gt;
As far as impact goes, no customer has reported any issues , but as you can see, the logging gets cluttered by these messages.&lt;BR /&gt;
&lt;BR /&gt;
The configuration regarding IPMC:&lt;BR /&gt;
&lt;DIV class="threadCode"&gt;&lt;B&gt;code:&lt;/B&gt;&lt;PRE spellcheck="false"&gt;#&lt;BR /&gt;# Module mcmgr configuration.&lt;BR /&gt;#&lt;BR /&gt;configure forwarding ipmc lookup-key group-vlan&lt;BR /&gt;&lt;/PRE&gt;&lt;/DIV&gt;&lt;BR /&gt;
&lt;BR /&gt;
I've checked multiple topics and I can't quite figure out why this is going on. If there's a solution without rebooting the stack, that would be ideal.&lt;BR /&gt;
&lt;BR /&gt;
Any help would be apreciated!</description>
      <pubDate>Mon, 28 Jan 2019 21:02:12 GMT</pubDate>
      <guid>https://community.extremenetworks.com/t5/extremeswitching-exos-switch/erro-kern-ipv4mc-error-slot-1-unable-to-add-ipmc-vlan/m-p/91764#M21364</guid>
      <dc:creator>Robert-H2B</dc:creator>
      <dc:date>2019-01-28T21:02:12Z</dc:date>
    </item>
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