首先确定是否需要重新命名默认的 IPoIB 设备，如果是，则请按照 第 9.3.3 节 “70-persistent-ipoib.rules 用法” 一节中的说明，使用 udev 重命名规则重新命名这些设备。用户可强制重命名 IPoIB 设备而无需重启，方法是删除 ib_ipoib 内核模块，然后按以下方法重新载入：

~]$ rmmod ib_ipoib
~]$ modprobe ib_ipoib

按要求重新命名设备后，请使用 nmcli 工具创建 IPoIB 接口，如下：

~]$ nmcli con add type infiniband con-name mlx4_ib0 ifname mlx4_ib0 transport-mode connected mtu 65520
Connection 'mlx4_ib0' (8029a0d7-8b05-49ff-a826-2a6d722025cc) successfully added.
~]$ nmcli con edit mlx4_ib0

===| nmcli interactive connection editor |===

Editing existing 'infiniband' connection: 'mlx4_ib0'

Type 'help' or '?' for available commands.
Type 'describe [>setting<.>prop<]' for detailed property description.

You may edit the following settings: connection, infiniband, ipv4, ipv6
nmcli> set infiniband.mac-address 80:00:02:00:fe:80:00:00:00:00:00:00:f4:52:14:03:00:7b:cb:a3
nmcli> save
Connection 'mlx4_ib3' (8029a0d7-8b05-49ff-a826-2a6d722025cc) successfully updated.
nmcli> quit

此时已创建名为 mlx4_ib0 的 IPoIB 接口，并将其设定为连接模式，采用最大连接模式 MTU，在 IPv4 或 IPv6 中使用 DHCP。如果为集群流量使用 IPoIB 接口，而为集群以外通讯使用以太网接口，则很可能需要按要求禁用 IPoIB 接口中的默认路由及所有默认名称服务器。

~]$ nmcli con edit mlx4_ib0

===| nmcli interactive connection editor |===

Editing existing 'infiniband' connection: 'mlx4_ib0'

Type 'help' or '?' for available commands.
Type 'describe [>setting<.>prop<]' for detailed property description.

You may edit the following settings: connection, infiniband, ipv4, ipv6
nmcli> set ipv4.ignore-auto-dns yes
nmcli> set ipv4.ignore-auto-routes yes
nmcli> set ipv4.never-default true
nmcli> set ipv6.ignore-auto-dns yes
nmcli> set ipv6.ignore-auto-routes yes
nmcli> set ipv6.never-default true
nmcli> save
Connection 'mlx4_ib0' (8029a0d7-8b05-49ff-a826-2a6d722025cc) successfully updated.
nmcli> quit

若需要 P_Key 接口，则请使用 nmcli 创建该接口，如下：

~]$ nmcli con add type infiniband con-name mlx4_ib0.8002 ifname mlx4_ib0.8002 parent mlx4_ib0 p-key 0x8002
Connection 'mlx4_ib0.8002' (4a9f5509-7bd9-4e89-87e9-77751a1c54b4) successfully added.
~]$ nmcli con modify mlx4_ib0.8002 infiniband.mtu 65520 infiniband.transport-mode connected ipv4.ignore-auto-dns yes ipv4.ignore-auto-routes yes ipv4.never-default true ipv6.ignore-auto-dns yes ipv6.ignore-auto-routes yes ipv6.never-default true