SR8808-X如何做IRF，是否有什么注意事项？

您好，请知：

只要堆叠的设备型号、软件版本一致就可以了。

以下是配置举例，请参考：

1.10.7  在SR8800-X-S上组建IRF典型配置举例（LACP MAD检测方式）

1. 组网需求

由于公司人员激增，接入层设备提供的端口数目已经不能满足PC的接入需求。现需要在保护现有投资的基础上扩展端口接入数量，并要求网络易管理、易维护。

2. 组网图

图1-20 组建IRF典型配置组网图（LACP MAD检测方式）

3. 配置思路

·           Device A提供的接入端口数目已经不能满足网络需求，需要另外增加一台设备Device B。

·           鉴于第二代智能弹性架构IRF技术具有管理简便、网络扩展能力强、可靠性高等优点，所以本例使用IRF技术构建接入层（即在Device A和Device B上配置IRF功能）。

·           为了防止万一IRF链路故障导致IRF分裂、网络中存在两个配置冲突的IRF，需要启用MAD检测功能。因为接入层设备较多，我们采用LACP MAD检测。

4. 配置步骤

(1)       配置Device A

# 设置Device A的成员编号为1。

<DeviceA> system-view

[DeviceA] irf member 1 renumber 1

# 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。

<DeviceA> system-view

[DeviceA] chassis convert mode irf

The device will switch to IRF mode and reboot. Continue?[Y/N]:y                

You are recommended to save the current running configuration and specify the co

nfiguration file for the next startup. Now save the running configuration to the

 next-startup configuration file? [Y/N]:y                                      

Please input the file name(*.cfg)[cfa0:/test.cfg]                              

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

cfa0:/test.cfg exists, overwrite? [Y/N]:y                                      

Validating file. Please wait...                                                

Saved the current configuration to mainboard device successfully.              

Do you want to convert the content of the next startup configuration file cfa0:/

test.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。

# 手工关闭主控板上的物理端口Ten-GigabitEthernet1/3/1/1。

<DeviceA> system-view

[DeviceA] interface ten-gigabitethernet 1/3/1/1

[DeviceA-Ten-GigabitEthernet1/3/1/1] port link-mode bridge

[DeviceA-Ten-GigabitEthernet1/3/1/1] shutdown

[DeviceA-Ten-GigabitEthernet1/3/1/1] quit

# 创建IRF端口1/2，并将它与物理端口Ten-GigabitEthernet1/3/1/1绑定。

[DeviceA] irf-port 1/2

[DeviceA-irf-port1/2] port group interface ten-gigabitethernet 1/3/1/1

[DeviceA-irf-port1/2] quit

# 手工开启物理端口Ten-GigabitEthernet1/3/1/1。

[DeviceA] interface ten-gigabitethernet 1/3/1/1

[DeviceA-Ten-GigabitEthernet1/3/1/1] undo shutdown

[DeviceA-Ten-GigabitEthernet1/3/1/1] quit

# 将当前配置保存到下次启动配置文件。

[DeviceA] save

# 激活IRF端口的配置。

[DeviceA] irf-port-configuration active

(2)       配置Device B

# 配置Device B的成员编号为2。

<DeviceB> system-view

[DeviceB] irf member 2 renumber 2

# 将当前配置保存到下次启动配置文件。

[DeviceB] quit

<DeviceB> save

# 参照图1-20进行物理连线。

# 将设备的运行模式切换到IRF模式。

<DeviceB> system-view

[DeviceB] chassis convert mode irf

The device will switch to IRF mode and reboot. Continue?[Y/N]:y                

You are recommended to save the current running configuration and specify the co

nfiguration file for the next startup. Now save the running configuration to the

 next-startup configuration file? [Y/N]:y                                      

Please input the file name(*.cfg)[cfa0:/test.cfg]                              

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

cfa0:/test.cfg exists, overwrite? [Y/N]:y                                      

Validating file. Please wait...                                                

Saved the current configuration to mainboard device successfully.              

Do you want to convert the content of the next startup configuration file cfa0:/

test.cfg to make it available in IRF mode? [Y/N]:y                             

Now rebooting, please wait...  

# 手工关闭主控板上的物理端口Ten-GigabitEthernet2/3/1/1。

<DeviceB> system-view

[DeviceB] interface ten-gigabitethernet 2/3/1/1

[DeviceB-Ten-GigabitEthernet2/3/1/1] port link-mode bridge

[DeviceB-Ten-GigabitEthernet2/3/1/1] shutdown

[DeviceB-Ten-GigabitEthernet2/3/1/1] quit

# 创建IRF端口2/1，并将它与物理端口Ten-GigabitEthernet2/3/1/1绑定。

[DeviceB] irf-port 2/1

[DeviceB-irf-port2/1] port group interface ten-gigabitethernet 2/3/1/1

[DeviceB-irf-port2/1] quit

# 手工开启物理端口Ten-GigabitEthernet2/3/1/1。

[DeviceB] interface ten-gigabitethernet 2/3/1/1

[DeviceB-Ten-GigabitEthernet2/3/1/1] undo shutdown

[DeviceB-Ten-GigabitEthernet2/3/1/1] quit

# 将当前配置保存到下次启动配置文件。

[DeviceB] quit

# 激活IRF端口的配置。

[DeviceB] irf-port-configuration active

# 系统会提示发生IRF合并，由于DeviceB的IRF成员编号为2，大于DeviceA，因此会在竞选中失败而自动重启，重启后两台设备形成一个IRF。

(3)       配置LACP MAD检测

# 设置IRF域编号为1。

<DeviceA> system-view

[DeviceA] irf domain 1

# 创建一个动态聚合接口，并使能LACP MAD检测功能。

[DeviceA] interface bridge-aggregation 2

[DeviceA-Bridge-Aggregation2] link-aggregation mode dynamic

[DeviceA-Bridge-Aggregation2] mad enable

 You need to assign a domain ID (range: 0-4294967295)

 [Current domain is: 0]: 1

 The assigned  domain ID is: 1

MAD LACP only enable on dynamic aggregation interface.

[DeviceA-Bridge-Aggregation2] quit

# 在聚合接口中添加成员端口Ten-GigabitEthernet1/3/1/2和Ten-GigabitEthernet2/3/1/2，专用于Device A和Device B实现LACP MAD检测。

[DeviceA] interface ten-gigabitethernet 1/3/1/2

[DeviceA-Ten-GigabitEthernet1/3/1/2] port link-mode bridge

[DeviceA-Ten-GigabitEthernet1/3/1/2] port link-aggregation group 2

[DeviceA-Ten-GigabitEthernet1/3/1/2] quit

[DeviceA] interface ten-gigabitethernet 2/3/1/2

[DeviceA-Ten-GigabitEthernet2/3/1/2] port link-mode bridge

[DeviceA-Ten-GigabitEthernet2/3/1/2] port link-aggregation group 2

[DeviceA-Ten-GigabitEthernet2/3/1/2] quit

(4)       配置中间设备Device C

Device C作为中间设备来转发、处理LACP协议报文，协助Device A和Device B进行多Active检测。从节约成本的角度考虑，使用一台支持LACP协议扩展功能的设备即可。

# 创建一个动态聚合接口。

<DeviceC> system-view

[DeviceC] interface bridge-aggregation 2

[DeviceC-Bridge-Aggregation2] link-aggregation mode dynamic

[DeviceC-Bridge-Aggregation2] quit

# 在聚合接口中添加成员端口Ten-GigabitEthernet3/1/1和Ten-GigabitEthernet3/1/2，用于帮助LACP MAD检测。

[DeviceC] interface ten-gigabitethernet 3/1/1

[DeviceC-Ten-GigabitEthernet3/1/1] port link-mode bridge

[DeviceC-Ten-GigabitEthernet3/1/1] port link-aggregation group 2

[DeviceC-Ten-GigabitEthernet3/1/1] quit

[DeviceC] interface ten-gigabitethernet 3/1/2

[DeviceC-Ten-GigabitEthernet3/1/2] port link-mode bridge

[DeviceC-Ten-GigabitEthernet3/1/2] port link-aggregation group 2