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Cisco SFS InfiniBand Host Drivers User Guide for Linux
OL-12309-01
Chapter 3 IP over IB Protocol
Manually Configuring IPoIB for Default IB Partition
Manually Configuring IPoIB for Default IB Partition
To manually configure IPoIB for the default IB partition, perform the following steps:
Step 1 Log in to your Linux host.
Step 2 To configure the interface, enter the ifconfig command with the following items:
• The appropriate IB interface (ib0 or ib1 on a host with one HCA)
• The IP address that you want to assign to the interface
• The netmask keyword
• The subnet mask that you want to assign to the interface
The following example shows how to configure an IB interface:
host1# ifconfig ib0 192.168.0.1 netmask 255.255.252.0
Step 3 (Optional) Verify the configuration by entering the ifconfig command with the appropriate port identifier
ib# argument.
The following example shows how to verify the configuration:
host1# ifconfig ib0
ib0 Link encap:Ethernet HWaddr F8:79:D1:23:9A:2B
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::9879:d1ff:fe20:f4e7/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:2044 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:9 overruns:0 carrier:0
collisions:0 txqueuelen:1024
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Step 4 Repeat Step 2 and Step 3 on the remaining interface(s).
Subinterfaces
This section describes subinterfaces. Subinterfaces divide primary (parent) interfaces to provide traffic
isolation. Partition assignments distinguish subinterfaces from parent interfaces. The default Partition
Key (p_key), ff:ff, applies to the primary (parent) interface.
This section includes the following topics:
• Creating a Subinterface Associated with a Specific IB Partition, page 3-3
• Removing a Subinterface Associated with a Specific IB Partition, page 3-4