A Sun JAVA Library is using adress 126.96.36.199 by default. This library is used by some component of an oracle DB.
The part of the network where this server is located is composed of 3500XL switch and SUP720 routers. When the server join the multicast group, the IGMP L2 adress is mapped to the port.
160 0100.5e00.0001 Fa0/13
The L2 multicast adress is the same as the L2 of 188.8.131.52(all host) and the trafic should be broadcasted to all host on subnet. The problem is that after this host register, every other host on the same subnet stop receiving the IGMP Query from the router(184.108.40.206). This single host is sucking down all of the Query causing a DOS.
Did anyone ever had this issue, I'm thinking of putting an ACL to stop this.
To verify IGMP snooping on the switch and interfaces, use the show ip igmp snooping command.To troubleshoot IGMP issues, use the debug ip igmp command. The debug output indicates IGMP membership queries, membership responses, and the conversion of IGMPv2 to IGMPv3 through DNS lookup. Refer the following link for more information
I am not clear on your setup: are you saying that only the host connected to interface Fa0/13 receives the multicast stream from 220.127.116.11 ? Is this a layer 2 environment only (since you say that you have SUP720s as well involved) ?
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.