不可以，堆叠的两台设备必须是同系列的

一般是相同版本 相同型号交换机才可以，有数据的交换机可以设置的优先级高一些 这样数据就不会丢失

S5560和S5500不可以堆叠

部署IRF需要相同型号、相同软件版本的设备。

以下是IRF的配置举例：

1.9.2  IRF典型配置举例（BFD MAD检测方式）

1. 组网需求

如图1-14所示，配置Device A和Device B组成IRF设备，接入层设备通过聚合双链路上行。因为成员设备比较少，我们配置BFD MAD进行分裂检测。

2. 组网图

图1-14 IRF典型配置组网图（BFD MAD检测方式）

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3. 配置步骤

(1)     配置Device A

# 设置Device A的成员编号为1，创建IRF端口2，并将它与物理端口Ten-GigabitEthernet2/0/1和Ten-GigabitEthernet3/0/1绑定。

<Sysname> system-view

[Sysname] irf member 1

[Sysname] irf-port 2

[Sysname-irf-port2] port group interface ten-gigabitethernet 2/0/1

[Sysname-irf-port2] port group interface ten-gigabitethernet 3/0/1

[Sysname-irf-port2] quit

# 将当前配置保存到下次启动配置文件。

[Sysname] quit

<Sysname> save

# 将设备的运行模式切换到IRF模式。

<Sysname> system-view

[Sysname] chassis convert mode irf

The device will switch to IRF mode and reboot.

You are recommended to save the current running configuration and specify the configuration file for the next startup. Continue? [Y/N]:y

Please input the file name(*.cfg)[flash:/startup.cfg]

(To leave the existing filename unchanged, press the enter key):

flash:/startup.cfg exists, overwrite? [Y/N]:y

Validating file. Please wait...

Saved the current configuration to mainboard device successfully.

Slot 1:

Save next configuration file successfully.

Do you want to convert the content of the next startup configuration file flash:/startup.cfg to make it available in IRF mode? [Y/N]:y

Now rebooting, please wait...

设备重启后Device A组成了只有一台成员设备的IRF。

(2)     配置Device B

# 配置Device B的成员编号为2，创建IRF端口1，并将它与物理端口Ten-GigabitEthernet2/0/1和Ten-GigabitEthernet3/0/1绑定。

<Sysname> system-view

[Sysname] irf member 2

[Sysname] irf-port 1

[Sysname-irf-port1] port group interface ten-gigabitethernet 2/0/1

[Sysname-irf-port1] port group interface ten-gigabitethernet 3/0/1

[Sysname-irf-port1] quit

# 将当前配置保存到下次启动配置文件。

[Sysname] quit

<Sysname> save

# 参照图1-14进行物理连线。

# 将设备的运行模式切换到IRF模式。

<Sysname> system-view

[Sysname] chassis convert mode irf

The device will switch to IRF mode and reboot.

You are recommended to save the current running configuration and specify the configuration file for the next startup. Continue? [Y/N]:y

Please input the file name(*.cfg)[flash:/startup.cfg]

(To leave the existing filename unchanged, press the enter key):

flash:/startup.cfg exists, overwrite? [Y/N]:y

Validating file. Please wait...

Saved the current configuration to mainboard device successfully.

Slot 1:

Save next configuration file successfully.

Do you want to convert the content of the next startup configuration file flash:/startup.cfg to make it available in IRF mode? [Y/N]:y

Now rebooting, please wait...

设备B重启后与设备A形成IRF。

(3)     配置BFD MAD检测

# 创建三层聚合接口1。

<Sysname> system-view

[Sysname] interface route-aggregation 1

[Sysname-Route-Aggregation1] quit

#分别将接口Ten-GigabitEthernet1/2/0/2与Ten-GigabitEthernet2/2/0/2加入到聚合组1中。

[Sysname] interface ten-gigabitethernet 1/2/0/2

[Sysname-Ten-GigabitEthernet1/2/0/2] port link-aggregation group 1

[Sysname-Ten-GigabitEthernet1/2/0/2] quit

[Sysname] interface ten-gigabitethernet 2/2/0/2

[Sysname-Ten-GigabitEthernet2/2/0/2] port link-aggregation group 1

[Sysname-Ten-GigabitEthernet2/2/0/2] quit

#配置三层聚合接口1的MAD IP地址。

[Sysname] interface route-aggregation 1

[Sysname-Route-Aggregation1] mad bfd enable

[Sysname-Route-Aggregation1] mad ip address 192.168.2.1 24 member 1

[Sysname-Route-Aggregation1] mad ip address 192.168.2.2 24 member 2

[Sysname-Route-Aggregation1] quit