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It handles the following tasks:
■ Traffic distribution
■ Heartbeat traffic
Configured as described in the following sections.
Setting up /etc/llthosts
The file llthosts(4M) is a database. This file contains one entry per system that
links the LLT system ID (in the first column) with the LLT host name. You must
create an identical file on each node in the cluster.
Use vi, or another editor, to create the file /etc/llthosts that contains the entries
that resemble:
0 north
1 south
Setting up /etc/llttab
The /etc/llttab file must specify the system’s ID number (or, its node name), and
the network links that correspond to the system. In addition, the file can contain
other directives. Refer also to the sample llttab file in /opt/VRTSllt.
See “LLT directives” on page 147.
Usevi or anothereditor, tocreate the file/etc/llttab that containsthe entriesthat
resemble:
set-node north
set-cluster 2
link eth1 eth1 - ether - -
link eth2 eth2 - ether - -
The first line must identify the system where the file exists. In the preceeding
example, thevalue forset-node canbe: north,0, or thefile name/etc/nodename.
The file needs to contain the name of the system (north in this example) to use
these choices. The next two lines, beginning with the link command, identify the
twoprivate networkcards that theLLT protocoluses. Theorder of directivesmust
be the same as in the sample file /opt/VRTSllt/sample-llttab.
LLT directives
For more information about LLT directives, refer to the llttab(4) manual page.
Table 8-4 describes the LLT directives for LLT setup.
147Installing VCS on a single node
Adding a node to a single-node cluster