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The %MCAST-4-RX_LVRANGE: IGMP: Rcvd Leave in the range of 01-00-5e-00-00-xx error Or %MCAST-5-RX_IGMPLV:IGMP: Rcvd IGMP Leave 01-00-5e-00-00-xx error message appears in the logs of a Cisco Catalyst 6500 switch that runs CatOS

Core issue

The %MCAST-4-RX_LVRANGE: IGMP: Rcvd Leave in the range of 01-00-5e-00-00-xx Or %MCAST-5-RX_IGMPLV:IGMP: Rcvd IGMP Leave  01-00-5e-00-00-xx error message indicates that the switch received an Internet Group Management Protocol (IGMP) leave from a host for the group address in the range of 01-00-5e-00-00-xx. This address range is normally used for control packets like CDP, VTP, STP and must not be used for general multicast data traffic. When a device that listens to control protocols but receives an erroneous join or leave IGMP messages destined to 01-00-5e-00-00-xx,  then the device simply ignores the packet and logs an error message. This information is flooded to all the ports in the same VLAN.


To resolve this issue, perform these steps:

  1. Locate the device sending the reserved destination address packets by using a packet capture tool (like a sniffer) and filter Interior Gateway Management Protocol (IGMP) messages.  

  2. Copy packets from a source port to a destination port, where you then attach the sniffer. This is done by using the Switched Port Analyzer (SPAN) feature.    

    For more information on the SPAN feature, refer to Configuring the Catalyst Switched Port Analyzer (SPAN) Feature.

  3. If you are not using the IGMP feature, you can set IGMP to disable. This is done by issuing the set igmp disable. This stops the error message. 

   4. Set the logging level for multicast by issuing the set logging level mcast 2 default. This also stops the message. Otherwise suppressing the message does not resolve the underlying issue.

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Last update:
‎06-22-2009 04:11 PM
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