Cisco InfiniBand 4x User's Guide download pdf (Page 60)

46 Implementing Cisco InfiniBand on IBM BladeCenter

To create virtual network interfaces on a Linux blade server, complete the following steps.

1. Get the IO Controller (IOC) numbers for the Ethernet bridge ports by running the

command shown in Figure 4-7.

Figure 4-7 InfiniBand Ethernet Bridge IOCs

Each IOC represents a physical port on the Ethernet bridge module.

2. Open the VNIC config file /etc/sysconfig/ics_inic.cfg in a text editor.

3. Uncomment the lines in the ics_inic.cfg file as shown in Figure 4-8 (at the bottom) and

update the information based on your desired configuration.

Figure 4-8 The ics_inic.cfg file

This creates a virtual NIC on your system that communicates through the specified port on

your Ethernet bridge module based on the port IOC that you designated. The parameters

have the following meanings:

– NAME: The name of the virtual interface.

– PRIMARY: The primary settings for the virtual interface.

– SECONDARY: The backup settings for the virtual interface.

– IOCGUID: The GUID of the Ethernet port on the bridge that you want to use for this

interface.

– INSTANCE: The HCA adapter that you want to use. 0 represents the 1st HCA on the

PCI bus.

– PORT: The HCA port that you want to use. 1 represents the 1st port on the HCA. In a

BladeCenter environment each port will only communicate with one switch module. For

example, in a BCH chassis InfiniBand HCA port 1 will communicate with an InfiniBand

switch module in bay 7.

4. Create an interface profile by creating a file ifcfg-eiocX, where X is the virtual interface

number that you want to use. The easiest way to do create this file is to copy and modify

and existing interface profile for eth0 or eth1. See Figure 4-9.

Figure 4-9 Copy eth0 config file

[root@localhost ~]# cat /proc/driver/ics_inic/iocs

0x66a01e1000147 BC2GE in Chassis 0x0000000000000000, Slot 5, Ioc 1

0x66a02e1000147 BC2GE in Chassis 0x0000000000000000, Slot 5, Ioc 2

0x66a03e1000147 BC2GE in Chassis 0x0000000000000000, Slot 5, Ioc 3

0x66a04e1000147 BC2GE in Chassis 0x0000000000000000, Slot 5, Ioc 4

0x66a05e1000147 BC2GE in Chassis 0x0000000000000000, Slot 5, Ioc 5

0x66a06e1000147 BC2GE in Chassis 0x0000000000000000, Slot 5, Ioc 6

[root@localhost ~]#

{CREATE; NAME="eioc2";

PRIMARY={IOCGUID=0x66A02E1000104; INSTANCE=0; PORT=1; }

SECONDARY={IOCGUID=0x66A013000010C; INSTANCE=0; PORT=2;}

}

[root@localhost ~]# cd /etc/sysconfig/network-scripts/

[root@localhost network-scripts]# cp ifcfg-eth0 ifcfg-eioc1

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 173 174

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Cisco InfiniBand 4x User's Guide Page 60