Error Code details
V-16-15-779
Severity: Critical 
Component: Cluster Server 
Message:
One or more TCP/IP enabled NIC(s) are selected for the VCS private network on the following systems : <system_names> It is recommended that you lower the priority of at least one NIC that will be used for private and public network communication. If you do not lower the priority of the NIC, it may result in VCS LLT and GAB communication packets getting lost on the public network in cases where there is network congestion. This may cause VCS to go into jeopardy. Do you want to lower the priority of the NIC?
Description:

This message appears if you do not lower the priority of the TCP/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 TCP/IP-enabled network adapter is used for the public network as well as the VCS private network communication.
     
  • One network adapter is used exclusively for the VCS private network communication.

 

Veritas solutions
Solution 1 Vote: [Useful] [Not useful]
Last Modified: 2010-07-16 22:21:01 PDT
Platform: Generic
Release: Generic
Content:

If there are only two network adapters on a system, Symantec recommends that you lower the priority of the TCP/IP-enabled network adapter that is used for both public and private network communication. To lower the priority, right-click the TCP/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.
 

Symantec 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.

 

User solutions
No user solutions yet.

 

Read and accept Terms of Service