HPE HDR IB交换机+HDR “Y”形线缆（2*100Gb）链接两块IB网卡，当前的现象是Y形线缆其中一个口灯可以亮，另外一个口的灯不亮。

HDR交换机+HDR “Y”形线缆（2*100Gb）链接两块IB网卡，当前的现象是Y形线缆其中一个口灯可以亮，另外一个口的灯不亮。

交换机需要开启端口拆分功能，并把对应的端口拆分。

一、查看交换机的Split Ready模式是否开启

1. 登录IB交换机输入enable进入特权模式

IB [standalone: master] > enable

IB [standalone: master] #    

2. 输入show system profile查看交换机配置文件Split Ready状态为no，表示Split Ready模式未开启。

IB [standalone: master] # show system profile

Profile                : ib

Number of SWIDs        : 1

Adaptive Routing       : yes

Adaptive Routing Groups: 2048

Split Ready            : no

IB Routing             : no

二、开启交换机的Split Ready模式，并配置端口拆分

1. 进入全局配置模式输入configure terminal

IB [standalone: master] # configure terminal

IB [standalone: master] (config) #

2. 输入system profile ib split-ready启用Split模式（注意：输入完成后会自动重启，如果是现网运行环境需申请停机窗口进行操作。）                                                                                                                          

IB [standalone: master] (config) # system profile ib split-ready

Warning - confirming will cause system reboot and all configuration will be deleted

3. 交换机重启后会重新对管理口进行初始化，ssh登录IB交换机管理端口

C:\Users\L62456>ssh admin@IB交换机管理IP地址

Mellanox MLNX-OS Switch Management

Password:

Last login: Fri Mar 17 11:34:48 2023 from 10.12.96.152

Mellanox Switch

Configuration wizard

Do you want to use the wizard for initial configuration?

Please answer 'yes' or 'no'.

Do you want to use the wizard for initial configuration? yes

Step 1: Hostname? [switch-7cf670]

Step 2: Use DHCP on mgmt0 interface? [no] no

Step 3: Use zeroconf on mgmt0 interface? [no] no

Step 4: Primary IPv4 address and masklen? [10.12.184.38/22]

Step 5: Default gateway? [10.12.184.1]

Step 6: Primary DNS server?

Step 7: Domain name?

Step 8: Enable IPv6? [yes]

Step 9: Enable IPv6 autoconfig (SLAAC) on mgmt0 interface? [no]

Step 10: Enable DHCPv6 on mgmt0 interface? [yes]

Step 11: Admin password (Must be typed)?

Due to security requirement, passwords must be typed

Step 11: Admin password (Must be typed)?

Step 11: Confirm admin password?

Step 12: Monitor password (Must be typed)?

Step 12: Confirm monitor password?

You have entered the following information:

   1. Hostname: switch-7cf670

   2. Use DHCP on mgmt0 interface: no

   3. Use zeroconf on mgmt0 interface: no

   4. Primary IPv4 address and masklen: 10.12.184.38/22

   5. Default gateway: 10.12.184.1

   6. Primary DNS server:

   7. Domain name:

   8. Enable IPv6: yes

   9. Enable IPv6 autoconfig (SLAAC) on mgmt0 interface: no

   10. Enable DHCPv6 on mgmt0 interface: yes

   11. Admin password (Must be typed): (CHANGED)

   12. Monitor password (Must be typed): (CHANGED)

To change an answer, enter the step number to return to.

Otherwise hit <enter> to save changes and exit.

Choice:

Configuration changes saved.

To return to the wizard from the CLI, enter the "configuration jump-start"

command from configure mode.  Launching CLI...

4. 查看Split 模式变为yes

switch-7cf670 [standalone: master] # show system profile

Profile                : ib

Number of SWIDs        : 1

Adaptive Routing       : yes

Adaptive Routing Groups: 1792

Split Ready            : yes

IB Routing             : no

5. 输入configure terminal进入全局配置模式

switch-7cf670 [standalone: master] # configure terminal

switch-7cf670 [standalone: master] (config) #      

6. 进入需要配置拆分的端口

switch-7cf670 [standalone: master] (config) # interface ib 1/1

switch-7cf670 [standalone: master] (config interface ib 1/1) #

7. 关闭此端口

switch-7cf670 [standalone: master] (config interface ib 1/1) # shutdown

8. 把1个端口分为2个

switch-7cf670 [standalone: master] (config interface ib 1/1) # module-type qsfp-split-2 

9. 查看端口状态IB1/1已经被拆分为2个端口

switch-7cf670 [standalone: master] (config interface ib 1/1) # show interfaces ib status

---------------------------------------------------------------------------------------------------------------------------------------------------------------

Interface      Description                                IB Subnet            Speed           Current line rate   Logical port state   Physical port state

---------------------------------------------------------------------------------------------------------------------------------------------------------------

IB1/1/1                                                   infiniband-default   -               -                   Down                 Polling

IB1/1/2                                                   infiniband-default   -               -                   Down                 Polling

IB1/2                                                     infiniband-default   -               -                   Down                 Polling

IB1/3                                                     infiniband-default   -               -                   Down                 Polling

IB1/4                                                     infiniband-default   -               -                   Down                 Polling

IB1/5                                                     infiniband-default   -               -                   Down                 Polling

10. 输入exit回到特权模式，在特权模式下输入write memory保存配置

switch-7cf670 [standalone: master] (config interface ib 1/1) # exit

switch-7cf670 [standalone: master] (config) # exit

switch-7cf670 [standalone: master] # write memory