| Event Id | 19 |
| Source | WLBS |
| Description | NLB Cluster %2 %1: Could not allocate additional connection descriptors. Increase the %3 value under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WLBS\Parameters\{GUID} key in the registry. %4 |
| Event Information | Error Message Explanation: Descriptors are used to track connections
that are being load-balanced by Network Load Balancing (NLB). A fixed number of
descriptors (controlled by a registry key value) are allocated when the NLB
driver is loaded. This event is logged to warn you that the pool of descriptors
has been exhausted. It might be necessary for NLB to reuse descriptors that are
currently tracking existing active connections in order to track the state of
new connections. This might have unexpected consequences and could result in
legitimate connections being reset. User Action: (Windows Server 2003): Advanced users can increase the maximum number of descriptors that are allocated by changing the appropriate key in the registry. The registry key specified in the message is incorrect. Instead, you should increase the value of the following registry key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\WLBS\Parameters\Interface\{GUID}\MaxDescriptorAllocs. The GUID is the globally unique identifier of the network adapter that is experiencing the problem. This is the network adapter that is bound to NLB. If NLB is, or has been, bound to multiple network adapters, you can find the correct adapter by looking at the value for the ClusterIPAddress key for each GUID entry in the registry. It is recommended that you double the existing value of this registry key. After increasing the value, you must re-bind NLB to the adapter that was experiencing the problem (as identified by the GUID in the message). To do this, do one of the following: Restart the host, Disable and then re-enable the appropriate network adapter, or Remove and then re-add NLB to the appropriate network adapter. If increasing the value does not correct the problem, contact your product support person. For more information about product support, see Help and Support. Alternatively, see Product Support Services at <a href="htt |
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