Veritas Storage Foundation 5.1 SP1 Cluster File System Installation Guide (5900-1510, April 2011)

■ Make sure the IPv6 addresses in the /etc/llttab files are consistent with the
IPv6 addresses of the network interfaces.
■ Make sure that each link has a unique not well-known UDP port.
See “Selecting UDP ports” on page 483.
■ For the links that cross an IP router, disable multicast features and specify the
IPv6 address of each link manually in the /etc/llttab file.
See “Sample configuration: links crossing IP routers” on page 485.
The link command in the /etc/llttab file
Review the link command information in this section for the /etc/llttab file. See
the following information for sample configurations:
■ See “Sample configuration: direct-attached links” on page 484.
■ See “Sample configuration: links crossing IP routers” on page 485.
Note that some of the fields in Table K-1 differ from the command for standard
LLT links.
Table K-1 describes the fields of the link command that are shown in the /etc/llttab
file examples.
Table K-1
Field description for link command in /etc/llttab
DescriptionField
A unique string that is used as a tag by LLT; for example link1,
link2,....
tag-name
The device path of the UDP protocol; for example /dev/udp6.device
Nodes using the link. "-" indicates all cluster nodes are to be
configured for this link.
node-range
Type of link; must be "udp6" for LLT over UDP.link-type
Unique UDP port in the range of 49152-65535 for the link.
See “Selecting UDP ports” on page 483.
udp-port
"-" is the default, which has a value of 8192. The value may be
increased or decreased depending on the configuration. Use the
lltstat -l command to display the current value.
MTU
IPv6 address of the link on the local node.IPv6 address
"-" is the default for clusters spanning routers.mcast-address
Configuring LLT over UDP using IPv6
Manually configuring LLT over UDP using IPv6
482