如果HDR使用一分二特性，需要对HDR交换机端口进行配置。

1. 启动MST工具。

# mst start

# mst ib add

-I- Discovering the fabric - Running: ibdiagnet -skip all

-I- Added 3 in-band devices

# mst status

MST modules:

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

    MST PCI module loaded

    MST PCI configuration module loaded

 

MST devices:

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

/dev/mst/mt4123_pciconf0         - PCI configuration cycles access.

                                   domain:bus:dev.fn=0000:01:00.0 addr.reg=88 data.reg=92

                                   Chip revision is: 00

 

Inband devices:

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

/dev/mst/CA_MT4123_MT4123_ConnectX6___Mellanox_Technologies_lid-0x0001

/dev/mst/CA_MT4123_MT4123_ConnectX6___Mellanox_Technologies_lid-0x0003

/dev/mst/SW_MT54000_b8599f030052c424_lid-0x0002

1. 对HDR交换机设置一分二特性。

mlxconfig -d /dev/mst/SW_MT54000_Quantum_Mellanox_Technologies_lid-0x0003 set SPLIT_MODE=1

1. 拆分HDR交换机端口

举例一：对交换机所有40个端口设置一分二特性。

# mlxconfig -d /dev/mst/SW_MT54000_Quantum_Mellanox_Technologies_lid-0x0002 set SPLIT_PORT[1..40]=1

举例二：对交换机特定端口，比如2端口设置一分二特性。

# mlxconfig -d /dev/mst/SW_MT54000_Quantum_Mellanox_Technologies_lid-0x0002 set SPLIT_PORT[2]=1

1. 重启HDR交换机。

# flint -d /dev/mst/SW_MT54000_Quantum_Mellanox_Technologies_lid-0x0002 swreset

1. 查询交换机模式配置。

# mlxconfig -d /dev/mst/SW_MT54000_Quantum_Mellanox_Technologies_lid-0x0002 query

Device #1:

----------

Device type:    Quantum

Name:           N/A

Description:    N/A

Device:         /dev/mst/SW_MT54000_Quantum_Mellanox_Technologies_lid-0x0002

Configurations:                              Next Boot

SPLIT_MODE                               SPLIT_2X(1)

SPLIT_PORT                               Array[1..64]

GB_VECTOR_LENGTH                         0

GB_UPDATE_MODE                           ALL(0)

GB_VECTOR                                Array[0..7]

查询交换机前10个端口的一分为二特性是否开启。

# mlxconfig -d /dev/mst/SW_MT54000_Quantum_Mellanox_Technologies_lid-0x0002 query SPLIT_PORT[1..10]

Device #1:

----------

Device type:    Quantum

Name:           N/A

Description:    N/A

Device:         /dev/mst/SW_MT54000_Quantum_Mellanox_Technologies_lid-0x0002

Configurations:                              Next Boot

SPLIT_PORT[1]                               SPLIT_2X(1)

SPLIT_PORT[2]                               SPLIT_2X(1)

SPLIT_PORT[3]                               SPLIT_2X(1)

SPLIT_PORT[4]                               SPLIT_2X(1)

SPLIT_PORT[5]                               SPLIT_2X(1)

SPLIT_PORT[6]                               SPLIT_2X(1)

SPLIT_PORT[7]                               SPLIT_2X(1)

SPLIT_PORT[8]                               SPLIT_2X(1)

SPLIT_PORT[9]                               SPLIT_2X(1)

SPLIT_PORT[10]                              SPLIT_2X(1)