Symantec Veritas Cluster Server Installation Manual page 160

160 Advanced VCS installation topics
Using the UDP layer for LLT
Field description for set-addr command in /etc/llttab
Table A-2
Field
node-id
link tag-name
address
Selecting UDP ports
When you select a UDP port, select an available 16-bit integer from the range that
follows:
Use available ports in the private range 49152 to 65535
Do not use the following ports:
Ports from the range of well-known ports, 0 to 1023
Ports from the range of registered ports, 1024 to 49151
To check which ports are defined as defaults for a node, examine the file
/etc/services. You should also use the
currently in use. For example:
# netstat -au | more
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address
udp 0 0 *:32768
udp 0 0 *:956
udp 0 0 *:tftp
udp 0 0 *:sunrpc
udp 0 0 *:ipp
Look in the UDP section of the output; the UDP ports that are listed under Local
Address are already in use. If a port is listed in the /etc/services file, its associated
name is displayed rather than the port number in the output.
Configuring the netmask for LLT
For nodes on different subnets, set the netmask so that the nodes can access the
subnets in use. Run the following command and answer the prompt to set the
netmask:
# set_parms ip_address
Description
The ID of the cluster node; for example, 0.
The string that LLT uses to identify the link; for example link1,
link2,....
IP address assigned to the link for the peer node.
netstat
command to list the UDP ports
State
*:*
*:*
*:*
*:*
*:*