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.
ServiceIPis 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
ServiceIPwith 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
ServiceIPis 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
ServiceIPnetwork differ form the network of the device).
IBM.ServiceIPwill not modify your default gateway settings or other network/routing configurations.