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

The configuration that the /etc/llttab file for Node 0 represents has directly
attached crossover links. It might also have the links that are connected through
a hub or switch. These links do not cross routers.
LLT uses IPv6 multicast requests for peer node address discovery. So the addresses
of peer nodes do not need to be specified in the /etc/llttab file using the set-addr
command. Use the ifconfig interface_name command to verify that the IPv6
address is set correctly.
You can also use the lanscan command to verify the IPv6 address.
set-node Node0
set-cluster 1
#configure Links
#link tag-name device node-range link-type udp port MTU \
IP-address mcast-address
link link1 /dev/udp6 - udp6 50000 - fe80::21a:64ff:fe92:1b46 -
link link1 /dev/udp6 - udp6 50001 - fe80::21a:64ff:fe92:1b47 -
The file for Node 1 resembles:
set-node Node1
set-cluster 1
#configure Links
#link tag-name device node-range link-type udp port MTU \
IP-address mcast-address
link link1 /dev/udp6 - udp6 50000 - fe80::21a:64ff:fe92:1a92 -
link link1 /dev/udp6 - udp6 50001 - fe80::21a:64ff:fe92:1a93 -
Sample configuration: links crossing IP routers
Figure K-2 depicts a typical configuration of links crossing an IP router employing
LLT over UDP. The illustration shows two nodes of a four-node cluster.
485Configuring LLT over UDP using IPv6
Manually configuring LLT over UDP using IPv6