How to limit switch port flooding

[EricTheRed]

To limit switch port flooding

1. If multicast support has been enabled during setup, open Network Load Balancing Manager. For this, open a Command prompt. From the command window, type NLBMgr, and then press ENTER.
2. If Network Load Balancing Manager does not already list the cluster, connect to the cluster.
3. Right-click the cluster, and then click Cluster Properties.
4. On the Cluster Parameters tab, click the IGMP multicast check box to enable Internet Group Management Protocol (IGMP) support on all hosts in the cluster.

Notes

• When using Network Load Balancing Manager, you must be a member of the Administrators group on the host that you are configuring, or you must have been delegated the appropriate authority. As a security best practice, consider using Run as to perform this procedure. If you are configuring a cluster or host by running Network Load Balancing Manager from a computer that is not part of the cluster, you do not need to be a member of the Administrators group on that computer. For more information, see Default local groups, Default groups, and Using Run as.
• To start Network Load Balancing Manager, open a Command prompt. From the command window, type NLBMgr, and then press ENTER.
• To start Network Load Balancing Manager, open a Command prompt. From the command window, type NLBMgr, and then press ENTER.
• If the cluster hosts are directly connected to a hub to receive client requests and IGMP support is not enabled, incoming client traffic is automatically sent to all switch ports, and may produce switch flooding.
• You can only enable IGMP support when your cluster is configured for multicast mode. To enable multicast mode, see "Enable multicast support" in Related Topics below.
• Windows NT Load Balancing Service (WLBS) is the former name of Network Load Balancing in Windows NT 4.0. For backward compatibility reasons, WLBS continues to be used in certain instances.

[Carley]

Network Load Balancing is used to share the network between servers to help relieve one of the web server if too much activity. At first sight it seems to be a dns problem, the post is inserted properly in the field and the field knows it as a dns? Personally I always used NORTEL dispatcher for load balancing that apportioning the functions of the number of sessions.

[velrose]

Really useful explanation about switch port flooding