08-11-2011 08:43 AM - edited 03-07-2019 01:39 AM
HI all,
I am getting below error in my cisco switch in trunk port...
%MCAST-5-RX_IGMPREPORT: IGMP: Rcvd IGMP Report 01-00-5e-00-00-fb on 5/1..
Kindly help to reslve the issue..
Thanks a lot in advance..
Regards,
Ajith
Solved! Go to Solution.
08-11-2011 08:54 AM
Hi,
The messages you are receiving are informational only and are generated
when the switch receives IGMP report packets with a multicast MAC address that starts with 01-00-5e-00-00-xx.
This Layer 2 range of addresses is equivalent to a Layer 3 multicast
address range between 224.0.0.0 and 224.0.0.255.
These addresses are reserved for the use of routing protocols and other low-level topology discovery or maintenance protocols, such as gateway discovery and group membership reporting.
So, since these are addresses from a private range , sniff the interfae 5/1 out the traffic and find out what device is originating the frames.
This does not mean anything is wrong with the switch, these packets floating around from a
rogue PC or server.
You can set a span session to capture traffic on port 5/1 and look for the packet with mac address
01-00-5e-00-00-fb
Inorder to suppress these error messages from appearing in logs, we can use the below command in catos.
The command is "set logging level mcast 5 default"
Hope this helps
Cheers
Somu
Pls rate helpful posts
08-11-2011 08:50 AM
Ajith
This is not an error message. It is simply an informational message that an IGMP report has been seen on interface 5/1.
There is in effect nothing to resolve.
Jon
08-11-2011 08:54 AM
Hi,
The messages you are receiving are informational only and are generated
when the switch receives IGMP report packets with a multicast MAC address that starts with 01-00-5e-00-00-xx.
This Layer 2 range of addresses is equivalent to a Layer 3 multicast
address range between 224.0.0.0 and 224.0.0.255.
These addresses are reserved for the use of routing protocols and other low-level topology discovery or maintenance protocols, such as gateway discovery and group membership reporting.
So, since these are addresses from a private range , sniff the interfae 5/1 out the traffic and find out what device is originating the frames.
This does not mean anything is wrong with the switch, these packets floating around from a
rogue PC or server.
You can set a span session to capture traffic on port 5/1 and look for the packet with mac address
01-00-5e-00-00-fb
Inorder to suppress these error messages from appearing in logs, we can use the below command in catos.
The command is "set logging level mcast 5 default"
Hope this helps
Cheers
Somu
Pls rate helpful posts
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