Changing the parameters of an InfiniBand interface

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To change the parameters of an IB IF, use the SMIT user interface or command-line commands.

To change the parameters of an IB IF using SMIT:

  1. Run the $ smitty inet command.
    The Network Interface Selection menu displays.
  2. In the Network Interface Selection menu, select Change / Show Characteristics of a Network Interface.
    The Available Network Interfaces menu displays.
  3. In the Available Network Interfaces menu, select InfiniBand Interface.
    The Change / Show an IB Interface menu displays.
  4. Change the desired parameters.
To change the IB IF parameters at the command line, run the $ ifconfig command. The following command changes the IB IF parameters from the command line: 
$ ifconfig ib0 [ib_port port number mtu maximum transmission unit p_key 
16 bits hex partition key  ib_adapter InfiniBand adapter name netmask 
dotted decimals]
$ ifconfig ib0 inc_timer  3  com_timer 60
  • inc_timer is the time in minutes that an incomplete ARP entry will expire. Default is 2 mintues.
  • com_timer is the time in minutes that a complete ARP entry will expire. Default is 24 hours.