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VCS: Understanding the V-16-15-779 error message

This error message is displayed if you do not lower the priority of the IP-enabled network adapter used for both the public and the Veritas Cluster Server (VCS) private network.

VCS uses private network communications between cluster nodes for maintenance. It configures Low Latency Transport (LLT) for communications between cluster nodes and Global Atomic Broadcast (GAB) for transmitting cluster heartbeats.

When creating new clusters or adding nodes to existing clusters, VCS validates the selected systems for the number of available network adapters. Each system must have at least two network adapters used as follows:

·         One IP-enabled network adapter is used for public network as well as VCS private network communication.

·         One network adapter is used exclusively for VCS private network communication.

To solve this issue, if there are only two network adapters on a system, Veritas recommends that you lower the priority of the IP-enabled network adapter that is used for both public and private network communication. To lower the priority, right-click the IP-enabled network adapter on the list and select Low Priority from the pop-up menu.

Note: The cluster configuration is not affected if you do not lower the priority of the adapter. However, LLT and GAB communication packets may be lost on the public network due to network congestion, which may cause problem for VCS.

Veritas recommends having three network adapters per system, one for the public network and two exclusively for the VCS private network. They provide the required redundancy in the communication path and enable VCS to discriminate between a network failure and a system failure.

For more information, see:

Veritas InfoScale documentation for products and error messages can be found on the SORT website.