How do I configure Low Latency Transport (LLT) for VCS?

Article:TECH1376  |  Created: 1999-01-11  |  Updated: 2002-01-04  |  Article URL http://www.symantec.com/docs/TECH1376
Article Type
Technical Solution


Environment

Issue



How do I configure Low Latency Transport (LLT) for VCS?

Solution



To configure LLT, set up an /etc/llttab configuration file on each system in the cluster.

Each /etc/llttab file must specify the system�s ID number, the network interfaces to use, and other directives. Refer to the sample llttab file in /opt/VRTSllt.

The following example shows a simple llttab with minimum directives.

      set-node 1
      link qfe0 /dev/qfe:0 - ether - -link
      qfe1 /dev/qfe:1 - ether - -start

DirectiveDescription and Notes
set-nodeAssigns the system ID. This number must be unique for each system in the cluster and be in the range of 0 - 31.
linkAttaches LLT to a network interface. At least one link is required and up to eight are supported.
startThe start directive must always appear last.
set-clusterAssigns a unique cluster number. Use this directive when more than one cluster is configured on the same physical network connection.
link-lowpriUse this directive in place of a link for public network interfaces. This directive prevents VCS comunications on the public network unitl the network is the last link, and reduces the rate of heartbeat broadcasts.



Legacy ID



181389


Article URL http://www.symantec.com/docs/TECH1376


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