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Table A-2
Field description for set-addr command in /etc/llttab
DescriptionField
The ID of the cluster node; for example, 0.node-id
The stringthat LLTuses toidentify the link;for examplelink1,
link2,....
link tag-name
IP address assigned to the link for the peer node.address
Selecting UDP ports
Whenyou selecta UDP port,select anavailable 16-bit integerfrom therange 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 netstat command to list the UDP ports
currently in use. For example:
# netstat -au | more
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
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
Addressare already in use.If a port islisted in the /etc/servicesfile, 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
Advanced VCS installation topics
Using the UDP layer for LLT
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