What happens when an IBM.ServiceIP
is started?
If the resource manager is able to assign the IP address on the
selected network interface, the following functions will be carried
out:
- On Linux® on System z® with OSA network hardware an IP address takeover will be initiated for the specified IP address.
- The
ServiceIP
is created as an IP alias on the selected network device. - To invalidate ARP (Address Resolution Protocol) cache entries of other IP host which may have
the
ServiceIP
with a wrong hardware address (MAC address) in their cache, an unsolicited/gratuitous ARP packet is broadcast into the network. (Not applicable for IPv6 addresses.) - There is a system log message created to record the fact a
ServiceIP
is started on the specified network interface.
Also note that
- An IP address alias may generate a new entry in the system routing table of the host (in case
the
ServiceIP
network differ form the network of the device). - The
IBM.ServiceIP
will not modify your default gateway settings or other network/routing configurations.