All things related to multicast

I suggest to block also icmp packets towards 224/4. Ping with destination
within multicast range is overloading IGMP snooping processes on our
switches, even on Catalyst 6500s.

Bye

Marco Restani
NOC Top-IX




                                                                              
                                                             
                      "Charles R. Anderson"                                   
                                                             
                      
<>
                Per:      

                                                    
                      Inviato da:                  Cc:                        
                                                             
                      
owner-wg-multicast@in
        Oggetto:  Please filter TCP to 224/4 [was MSDP SA explosion - sasser 
worm?]             
                      ternet2.edu                                             
                                                             
                                                                              
                                                             
                                                                              
                                                             
                      03/05/2004 23.59                                        
                                                             
                                                                              
                                                             
                                                                              
                                                             




Folks, please filter TCP packets destined to 224/4.  TCP can't do
multicast, and that should help reduce the MSDP load caused by Sasser.

Thanks.